From 9a65f1ca645dc67dd0007b6d75d7d005549134c1 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 19 Feb 2026 14:21:10 -0600 Subject: [PATCH 01/47] feat: add initial implementation for Java Observability Plugin --- release-please-config.json | 8 + .../.gradle/8.14.3/checksums/checksums.lock | Bin 0 -> 17 bytes .../8.14.3/checksums/md5-checksums.bin | Bin 0 -> 21997 bytes .../8.14.3/checksums/sha1-checksums.bin | Bin 0 -> 24653 bytes .../executionHistory/executionHistory.bin | Bin 0 -> 134528 bytes .../executionHistory/executionHistory.lock | Bin 0 -> 17 bytes .../.gradle/8.14.3/fileChanges/last-build.bin | Bin 0 -> 1 bytes .../.gradle/8.14.3/fileHashes/fileHashes.bin | Bin 0 -> 24497 bytes .../.gradle/8.14.3/fileHashes/fileHashes.lock | Bin 0 -> 17 bytes .../8.14.3/fileHashes/resourceHashesCache.bin | Bin 0 -> 19789 bytes .../.gradle/8.14.3/gc.properties | 0 .../buildOutputCleanup.lock | Bin 0 -> 17 bytes .../buildOutputCleanup/cache.properties | 2 + .../buildOutputCleanup/outputFiles.bin | Bin 0 -> 19289 bytes .../.gradle/file-system.probe | Bin 0 -> 8 bytes .../.gradle/vcs-1/gc.properties | 0 .../observability-java/CHANGELOG.md | 1 + sdk/@launchdarkly/observability-java/Makefile | 10 + .../observability-java/README.md | 113 ++++++++ .../observability-java/build.gradle.kts | 15 ++ .../observability-java/gradle.properties | 3 + .../gradle/wrapper/gradle-wrapper.jar | Bin 0 -> 43764 bytes .../gradle/wrapper/gradle-wrapper.properties | 7 + sdk/@launchdarkly/observability-java/gradlew | 251 +++++++++++++++++ .../observability-java/gradlew.bat | 94 +++++++ .../observability-java/lib/build.gradle.kts | 101 +++++++ .../launchdarkly/observability/LDObserve.java | 137 ++++++++++ .../observability/ObservabilityOptions.java | 112 ++++++++ .../observability/ObservabilityPlugin.java | 101 +++++++ .../observability/internal/Constants.java | 21 ++ .../observability/internal/GraphQLClient.java | 115 ++++++++ .../observability/internal/OtelManager.java | 255 ++++++++++++++++++ .../internal/SamplingApiService.java | 135 ++++++++++ .../internal/sampling/CustomSampler.java | 196 ++++++++++++++ .../internal/sampling/SamplingConfig.java | 140 ++++++++++ .../sampling/SamplingLogProcessor.java | 54 ++++ .../sampling/SamplingTraceExporter.java | 51 ++++ .../graphql/GetSamplingConfigQuery.graphql | 53 ++++ .../observability/LDObserveTest.java | 74 +++++ .../ObservabilityPluginTest.java | 66 +++++ .../internal/sampling/CustomSamplerTest.java | 178 ++++++++++++ .../observability-java/settings.gradle.kts | 2 + 42 files changed, 2295 insertions(+) create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/checksums.lock create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/md5-checksums.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/sha1-checksums.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/executionHistory/executionHistory.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/executionHistory/executionHistory.lock create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileChanges/last-build.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/fileHashes.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/fileHashes.lock create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/resourceHashesCache.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/gc.properties create mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/buildOutputCleanup.lock create mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties create mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin create mode 100644 sdk/@launchdarkly/observability-java/.gradle/file-system.probe create mode 100644 sdk/@launchdarkly/observability-java/.gradle/vcs-1/gc.properties create mode 100644 sdk/@launchdarkly/observability-java/CHANGELOG.md create mode 100644 sdk/@launchdarkly/observability-java/Makefile create mode 100644 sdk/@launchdarkly/observability-java/README.md create mode 100644 sdk/@launchdarkly/observability-java/build.gradle.kts create mode 100644 sdk/@launchdarkly/observability-java/gradle.properties create mode 100644 sdk/@launchdarkly/observability-java/gradle/wrapper/gradle-wrapper.jar create mode 100644 sdk/@launchdarkly/observability-java/gradle/wrapper/gradle-wrapper.properties create mode 100755 sdk/@launchdarkly/observability-java/gradlew create mode 100644 sdk/@launchdarkly/observability-java/gradlew.bat create mode 100644 sdk/@launchdarkly/observability-java/lib/build.gradle.kts create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/LDObserveTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java create mode 100644 sdk/@launchdarkly/observability-java/settings.gradle.kts diff --git a/release-please-config.json b/release-please-config.json index a4432ea213..4a86ce9222 100644 --- a/release-please-config.json +++ b/release-please-config.json @@ -22,6 +22,14 @@ "include-component-in-tag": true, "extra-files": ["gradle.properties"] }, + "sdk/@launchdarkly/observability-java": { + "package-name": "launchdarkly-observability-java", + "release-type": "simple", + "versioning": "default", + "include-v-in-tag": false, + "include-component-in-tag": true, + "extra-files": ["gradle.properties"] + }, "sdk/flutter/packages/observability": { "package-name": "launchdarkly_flutter_observability", "release-type": "dart", diff --git a/sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/checksums.lock 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100644 index 0000000000..e69de29bb2 diff --git a/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/buildOutputCleanup.lock new file mode 100644 index 0000000000000000000000000000000000000000..8f330629839b9d1c850fdc6e26753aa8d3a708a7 GIT binary patch literal 17 UcmZS9R}8Z|v}nsb1_)>X04gB_9smFU literal 0 HcmV?d00001 diff --git a/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties b/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties new file mode 100644 index 0000000000..374bc9389a --- /dev/null +++ b/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties @@ -0,0 +1,2 @@ +#Thu Feb 19 11:31:22 CST 2026 +gradle.version=8.14.3 diff --git a/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin b/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin new file 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APIs may change before 1.0. + +## Requirements + +- Java 11+ +- LaunchDarkly Java Server SDK 7.12.0+ + +## Installation + +### Gradle + +```kotlin +dependencies { + implementation("com.launchdarkly:launchdarkly-observability-java:0.1.0") + implementation("com.launchdarkly:launchdarkly-java-server-sdk:7.12.0") +} +``` + +### Maven + +```xml + + com.launchdarkly + launchdarkly-observability-java + 0.1.0 + +``` + +## Usage + +```java +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; + +import java.util.List; + +LDConfig config = new LDConfig.Builder() + .plugins(Components.plugins().setPlugins(List.of( + new ObservabilityPlugin( + new ObservabilityOptions.Builder() + .serviceName("my-service") + .serviceVersion("1.0.0") + .environment("production") + .build() + ) + ))) + .build(); + +LDClient client = new LDClient("YOUR_SDK_KEY", config); +``` + +The plugin automatically: + +1. Sets up OpenTelemetry TracerProvider, LoggerProvider, and MeterProvider with OTLP HTTP exporters pointed at the LaunchDarkly observability backend. +2. Registers a `TracingHook` that adds span events for each flag evaluation, enabling guarded rollouts and observability. +3. Fetches sampling configuration from the backend to control telemetry volume. + +## Manual Instrumentation + +Use `LDObserve` for custom telemetry: + +```java +import com.launchdarkly.observability.LDObserve; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; + +// Record metrics +LDObserve.recordCount("requests.total", 1, Attributes.empty()); +LDObserve.recordHistogram("request.duration_ms", 42.5, Attributes.empty()); +LDObserve.recordMetric("queue.depth", 12.0, Attributes.empty()); + +// Record logs +LDObserve.recordLog("User logged in", Severity.INFO, Attributes.empty()); + +// Record errors +LDObserve.recordError(exception, Attributes.empty()); + +// Create spans +Span span = LDObserve.startSpan("my-operation", Attributes.empty()); +try { + // ... your code ... +} finally { + span.end(); +} + +// Flush / shutdown +LDObserve.flush(); +LDObserve.shutdown(); +``` + +## Configuration Options + +| Option | Default | Description | +|--------|---------|-------------| +| `serviceName` | `""` | Service name for resource attributes | +| `serviceVersion` | `""` | Service version for resource attributes | +| `environment` | `""` | Deployment environment name | +| `otlpEndpoint` | LaunchDarkly endpoint | Custom OTLP endpoint | +| `backendUrl` | LaunchDarkly backend | Custom backend URL for sampling config | +| `debug` | `false` | Enable debug logging | +| `manualStart` | `false` | Delay OTLP provider startup | + +## License + +Apache-2.0 diff --git a/sdk/@launchdarkly/observability-java/build.gradle.kts b/sdk/@launchdarkly/observability-java/build.gradle.kts new file mode 100644 index 0000000000..748460c0af --- /dev/null +++ b/sdk/@launchdarkly/observability-java/build.gradle.kts @@ -0,0 +1,15 @@ +plugins { + id("io.github.gradle-nexus.publish-plugin").version("2.0.0").apply(true) +} + +// Must be specified in root project for the gradle nexus publish plugin. +group = "com.launchdarkly" + +nexusPublishing { + this.repositories { + sonatype { + nexusUrl.set(uri("https://ossrh-staging-api.central.sonatype.com/service/local/")) + snapshotRepositoryUrl.set(uri("https://central.sonatype.com/repository/maven-snapshots/")) + } + } +} diff --git a/sdk/@launchdarkly/observability-java/gradle.properties b/sdk/@launchdarkly/observability-java/gradle.properties new file mode 100644 index 0000000000..248acf1e6b --- /dev/null +++ b/sdk/@launchdarkly/observability-java/gradle.properties @@ -0,0 +1,3 @@ +#x-release-please-start-version +version=0.1.0 +#x-release-please-end diff --git a/sdk/@launchdarkly/observability-java/gradle/wrapper/gradle-wrapper.jar b/sdk/@launchdarkly/observability-java/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000000000000000000000000000000000000..1b33c55baabb587c669f562ae36f953de2481846 GIT binary patch literal 43764 zcma&OWmKeVvL#I6?i3D%6z=Zs?ofE*?rw#G$eqJB ziT4y8-Y@s9rkH0Tz>ll(^xkcTl)CY?rS&9VNd66Yc)g^6)JcWaY(5$5gt 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zJ=wgYFt+1ACW)XwtNx)Q9tA2LPoB&DkL16P)ERWQlY4%Y`-5aM9mZ{eKPUgI!~J3Z zkMd5A_p&v?V-o-6TUa8BndiX?ooviev(DKw=*bBVOW|=zps9=Yl|-R5@yJe*BPzN}a0mUsLn{4LfjB_oxpv(mwq# zSY*%E{iB)sNvWfzg-B!R!|+x(Q|b@>{-~cFvdDHA{F2sFGA5QGiIWy#3?P2JIpPKg6ncI^)dvqe`_|N=8 '} + case $link in #( + /*) app_path=$link ;; #( + *) app_path=$APP_HOME$link ;; + esac +done + +# This is normally unused +# shellcheck disable=SC2034 +APP_BASE_NAME=${0##*/} +# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036) +APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD=maximum + +warn () { + echo "$*" +} >&2 + +die () { + echo + echo "$*" + echo + exit 1 +} >&2 + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH="\\\"\\\"" + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD=$JAVA_HOME/jre/sh/java + else + JAVACMD=$JAVA_HOME/bin/java + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD=java + if ! command -v java >/dev/null 2>&1 + then + die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +fi + +# Increase the maximum file descriptors if we can. +if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then + case $MAX_FD in #( + max*) + # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + MAX_FD=$( ulimit -H -n ) || + warn "Could not query maximum file descriptor limit" + esac + case $MAX_FD in #( + '' | soft) :;; #( + *) + # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked. + # shellcheck disable=SC2039,SC3045 + ulimit -n "$MAX_FD" || + warn "Could not set maximum file descriptor limit to $MAX_FD" + esac +fi + +# Collect all arguments for the java command, stacking in reverse order: +# * args from the command line +# * the main class name +# * -classpath +# * -D...appname settings +# * --module-path (only if needed) +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. + +# For Cygwin or MSYS, switch paths to Windows format before running java +if "$cygwin" || "$msys" ; then + APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) + CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) + + JAVACMD=$( cygpath --unix "$JAVACMD" ) + + # Now convert the arguments - kludge to limit ourselves to /bin/sh + for arg do + if + case $arg in #( + -*) false ;; # don't mess with options #( + /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath + [ -e "$t" ] ;; #( + *) false ;; + esac + then + arg=$( cygpath --path --ignore --mixed "$arg" ) + fi + # Roll the args list around exactly as many times as the number of + # args, so each arg winds up back in the position where it started, but + # possibly modified. + # + # NB: a `for` loop captures its iteration list before it begins, so + # changing the positional parameters here affects neither the number of + # iterations, nor the values presented in `arg`. + shift # remove old arg + set -- "$@" "$arg" # push replacement arg + done +fi + + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Collect all arguments for the java command: +# * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments, +# and any embedded shellness will be escaped. +# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be +# treated as '${Hostname}' itself on the command line. + +set -- \ + "-Dorg.gradle.appname=$APP_BASE_NAME" \ + -classpath "$CLASSPATH" \ + -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \ + "$@" + +# Stop when "xargs" is not available. +if ! command -v xargs >/dev/null 2>&1 +then + die "xargs is not available" +fi + +# Use "xargs" to parse quoted args. +# +# With -n1 it outputs one arg per line, with the quotes and backslashes removed. +# +# In Bash we could simply go: +# +# readarray ARGS < <( xargs -n1 <<<"$var" ) && +# set -- "${ARGS[@]}" "$@" +# +# but POSIX shell has neither arrays nor command substitution, so instead we +# post-process each arg (as a line of input to sed) to backslash-escape any +# character that might be a shell metacharacter, then use eval to reverse +# that process (while maintaining the separation between arguments), and wrap +# the whole thing up as a single "set" statement. +# +# This will of course break if any of these variables contains a newline or +# an unmatched quote. +# + +eval "set -- $( + printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | + xargs -n1 | + sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | + tr '\n' ' ' + )" '"$@"' + +exec "$JAVACMD" "$@" diff --git a/sdk/@launchdarkly/observability-java/gradlew.bat b/sdk/@launchdarkly/observability-java/gradlew.bat new file mode 100644 index 0000000000..db3a6ac207 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/gradlew.bat @@ -0,0 +1,94 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem +@rem SPDX-License-Identifier: Apache-2.0 +@rem + +@if "%DEBUG%"=="" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%"=="" set DIRNAME=. +@rem This is normally unused +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if %ERRORLEVEL% equ 0 goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. 1>&2 +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2 +echo. 1>&2 +echo Please set the JAVA_HOME variable in your environment to match the 1>&2 +echo location of your Java installation. 1>&2 + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH= + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* + +:end +@rem End local scope for the variables with windows NT shell +if %ERRORLEVEL% equ 0 goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +set EXIT_CODE=%ERRORLEVEL% +if %EXIT_CODE% equ 0 set EXIT_CODE=1 +if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% +exit /b %EXIT_CODE% + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle.kts b/sdk/@launchdarkly/observability-java/lib/build.gradle.kts new file mode 100644 index 0000000000..f26bec01ba --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle.kts @@ -0,0 +1,101 @@ +plugins { + `java-library` + `maven-publish` + signing +} + +val releaseVersion = version.toString() + +repositories { + mavenCentral() +} + +java { + sourceCompatibility = JavaVersion.VERSION_11 + targetCompatibility = JavaVersion.VERSION_11 + withJavadocJar() + withSourcesJar() +} + +dependencies { + // LaunchDarkly SDK - compileOnly so users provide their own version + compileOnly("com.launchdarkly:launchdarkly-java-server-sdk:7.12.0") + + // LaunchDarkly OTel tracing hook + implementation("com.launchdarkly:launchdarkly-java-server-sdk-otel:0.2.0") + + // OpenTelemetry + implementation("io.opentelemetry:opentelemetry-api:1.51.0") + implementation("io.opentelemetry:opentelemetry-sdk:1.51.0") + implementation("io.opentelemetry:opentelemetry-sdk-logs:1.51.0") + implementation("io.opentelemetry:opentelemetry-sdk-metrics:1.51.0") + implementation("io.opentelemetry:opentelemetry-exporter-otlp:1.51.0") + + // JSON parsing + implementation("com.google.code.gson:gson:2.11.0") + + // Testing + testImplementation("com.launchdarkly:launchdarkly-java-server-sdk:7.12.0") + testImplementation(platform("org.junit:junit-bom:5.13.4")) + testImplementation("org.junit.jupiter:junit-jupiter") + testRuntimeOnly("org.junit.platform:junit-platform-launcher") + testImplementation("io.opentelemetry:opentelemetry-sdk-testing:1.51.0") +} + +tasks.withType { + useJUnitPlatform() +} + +tasks.withType { + (options as StandardJavadocDocletOptions).addStringOption("Xdoclint:none", "-quiet") +} + +publishing { + publications { + create("release") { + groupId = "com.launchdarkly" + artifactId = "launchdarkly-observability-java" + version = releaseVersion + + from(components["java"]) + + pom { + name.set("LaunchDarkly Observability Java SDK") + description.set( + "Official LaunchDarkly Observability Java SDK for use with the LaunchDarkly Java Server SDK." + ) + url.set("https://github.com/launchdarkly/observability-sdk/") + organization { + name.set("LaunchDarkly") + url.set("https://launchdarkly.com/") + } + developers { + developer { + id.set("sdks") + name.set("LaunchDarkly SDK Team") + email.set("sdks@launchdarkly.com") + } + } + licenses { + license { + name.set("The Apache License, Version 2.0") + url.set("http://www.apache.org/licenses/LICENSE-2.0.txt") + } + } + scm { + connection.set( + "scm:git:https://github.com/launchdarkly/observability-sdk.git" + ) + developerConnection.set( + "scm:git:ssh:github.com/launchdarkly/observability-sdk.git" + ) + url.set("https://github.com/launchdarkly/observability-sdk/") + } + } + } + } +} + +signing { + sign(publishing.publications["release"]) +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java new file mode 100644 index 0000000000..143d58241c --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -0,0 +1,137 @@ +package com.launchdarkly.observability; + +import com.launchdarkly.observability.internal.Constants; +import com.launchdarkly.observability.internal.OtelManager; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.metrics.DoubleGauge; +import io.opentelemetry.api.metrics.DoubleHistogram; +import io.opentelemetry.api.metrics.LongCounter; +import io.opentelemetry.api.metrics.LongUpDownCounter; +import io.opentelemetry.api.metrics.Meter; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.api.trace.StatusCode; +import io.opentelemetry.api.trace.Tracer; + +import java.io.PrintWriter; +import java.io.StringWriter; + +/** + * Static singleton public API for LaunchDarkly Observability. + * + *

Before the plugin is initialized, all methods are safe to call and + * will use no-op implementations from the OpenTelemetry API.

+ */ +public final class LDObserve { + private LDObserve() {} + + /** + * Records a gauge metric. + */ + public static void recordMetric(String name, double value, Attributes attributes) { + Meter meter = OtelManager.getMeter(); + DoubleGauge gauge = meter.gaugeBuilder(name).build(); + gauge.set(value, attributes); + } + + /** + * Records a counter metric. + */ + public static void recordCount(String name, long value, Attributes attributes) { + Meter meter = OtelManager.getMeter(); + LongCounter counter = meter.counterBuilder(name).build(); + counter.add(value, attributes); + } + + /** + * Records a counter increment of 1. + */ + public static void recordIncr(String name, Attributes attributes) { + recordCount(name, 1, attributes); + } + + /** + * Records a histogram metric. + */ + public static void recordHistogram(String name, double value, Attributes attributes) { + Meter meter = OtelManager.getMeter(); + DoubleHistogram histogram = meter.histogramBuilder(name).build(); + histogram.record(value, attributes); + } + + /** + * Records an up/down counter metric. + */ + public static void recordUpDownCounter(String name, long value, Attributes attributes) { + Meter meter = OtelManager.getMeter(); + LongUpDownCounter counter = meter.upDownCounterBuilder(name).build(); + counter.add(value, attributes); + } + + /** + * Records a log message. + */ + public static void recordLog(String message, Severity severity, Attributes attributes) { + Logger logger = OtelManager.getLogger(); + logger.logRecordBuilder() + .setSeverity(severity) + .setBody(message) + .setAllAttributes(attributes) + .emit(); + } + + /** + * Records an error as a span with exception details. + */ + public static void recordError(Throwable throwable, Attributes attributes) { + Tracer tracer = OtelManager.getTracer(); + Span span = tracer.spanBuilder(Constants.ERROR_SPAN_NAME) + .setAllAttributes(attributes) + .startSpan(); + try { + span.setStatus(StatusCode.ERROR, throwable.getMessage()); + span.recordException(throwable); + + StringWriter sw = new StringWriter(); + throwable.printStackTrace(new PrintWriter(sw)); + span.setAttribute("exception.stacktrace", sw.toString()); + } finally { + span.end(); + } + } + + /** + * Starts a new span with the given name and attributes. + * + * @return the started span; caller is responsible for calling {@link Span#end()}. + */ + public static Span startSpan(String name, Attributes attributes) { + Tracer tracer = OtelManager.getTracer(); + return tracer.spanBuilder(name) + .setAllAttributes(attributes) + .startSpan(); + } + + /** + * Manually starts the OTLP providers. Only needed when + * {@link ObservabilityOptions.Builder#manualStart(boolean)} is true. + */ + public static void start(String sdkKey, ObservabilityOptions options) { + OtelManager.initialize(sdkKey, options); + } + + /** + * Flushes all pending telemetry data. + */ + public static void flush() { + OtelManager.flush(); + } + + /** + * Flushes all pending data and shuts down the providers. + */ + public static void shutdown() { + OtelManager.shutdown(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java new file mode 100644 index 0000000000..353b0eb12e --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java @@ -0,0 +1,112 @@ +package com.launchdarkly.observability; + +import com.launchdarkly.observability.internal.Constants; + +/** + * Configuration options for the LaunchDarkly Observability plugin. + * Use the {@link Builder} to construct an instance. + */ +public final class ObservabilityOptions { + + private final String serviceName; + private final String serviceVersion; + private final String environment; + private final String otlpEndpoint; + private final String backendUrl; + private final boolean debug; + private final boolean manualStart; + + private ObservabilityOptions(Builder builder) { + this.serviceName = builder.serviceName; + this.serviceVersion = builder.serviceVersion; + this.environment = builder.environment; + this.otlpEndpoint = builder.otlpEndpoint; + this.backendUrl = builder.backendUrl; + this.debug = builder.debug; + this.manualStart = builder.manualStart; + } + + public String getServiceName() { return serviceName; } + public String getServiceVersion() { return serviceVersion; } + public String getEnvironment() { return environment; } + public String getOtlpEndpoint() { return otlpEndpoint; } + public String getBackendUrl() { return backendUrl; } + public boolean isDebug() { return debug; } + public boolean isManualStart() { return manualStart; } + + /** + * Builder for {@link ObservabilityOptions}. + */ + public static class Builder { + private String serviceName = ""; + private String serviceVersion = ""; + private String environment = ""; + private String otlpEndpoint = Constants.DEFAULT_OTLP_ENDPOINT; + private String backendUrl = Constants.DEFAULT_BACKEND_URL; + private boolean debug = false; + private boolean manualStart = false; + + public Builder() {} + + /** + * Sets the service name for resource attributes. + */ + public Builder serviceName(String serviceName) { + this.serviceName = serviceName; + return this; + } + + /** + * Sets the service version for resource attributes. + */ + public Builder serviceVersion(String serviceVersion) { + this.serviceVersion = serviceVersion; + return this; + } + + /** + * Sets the deployment environment name for resource attributes. + */ + public Builder environment(String environment) { + this.environment = environment; + return this; + } + + /** + * Sets a custom OTLP endpoint. Defaults to the LaunchDarkly OTLP endpoint. + */ + public Builder otlpEndpoint(String otlpEndpoint) { + this.otlpEndpoint = otlpEndpoint; + return this; + } + + /** + * Sets a custom backend URL for fetching sampling configuration. + */ + public Builder backendUrl(String backendUrl) { + this.backendUrl = backendUrl; + return this; + } + + /** + * Enables debug logging for the observability plugin. + */ + public Builder debug(boolean debug) { + this.debug = debug; + return this; + } + + /** + * When set to true, the OTLP providers will not start automatically. + * Call {@link LDObserve#start(String, ObservabilityOptions)} to start them manually. + */ + public Builder manualStart(boolean manualStart) { + this.manualStart = manualStart; + return this; + } + + public ObservabilityOptions build() { + return new ObservabilityOptions(this); + } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java new file mode 100644 index 0000000000..f11ef47086 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -0,0 +1,101 @@ +package com.launchdarkly.observability; + +import com.launchdarkly.integrations.TracingHook; +import com.launchdarkly.observability.internal.GraphQLClient; +import com.launchdarkly.observability.internal.OtelManager; +import com.launchdarkly.observability.internal.SamplingApiService; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.integrations.EnvironmentMetadata; +import com.launchdarkly.sdk.server.integrations.Hook; +import com.launchdarkly.sdk.server.integrations.Plugin; +import com.launchdarkly.sdk.server.integrations.PluginMetadata; + +import java.util.Collections; +import java.util.List; +import java.util.logging.Level; +import java.util.logging.Logger; + +/** + * LaunchDarkly Observability plugin that integrates OpenTelemetry tracing, + * logging, and metrics with the LaunchDarkly Java Server SDK. + * + *

Usage:

+ * 
{@code
+ * LDConfig config = new LDConfig.Builder()
+ *     .plugins(Components.plugins().setPlugins(List.of(
+ *         new ObservabilityPlugin(
+ *             new ObservabilityOptions.Builder()
+ *                 .serviceName("my-service")
+ *                 .serviceVersion("1.0.0")
+ *                 .environment("production")
+ *                 .build()
+ *         )
+ *     )))
+ *     .build();
+ * LDClient client = new LDClient("YOUR_SDK_KEY", config);
+ * }
+ */ +public class ObservabilityPlugin extends Plugin { + + private static final Logger log = Logger.getLogger(ObservabilityPlugin.class.getName()); + private static final String PLUGIN_NAME = "launchdarkly-observability"; + + private final ObservabilityOptions options; + + /** + * Creates a new observability plugin with the given options. + * + * @param options configuration options for the plugin + */ + public ObservabilityPlugin(ObservabilityOptions options) { + this.options = options; + } + + @Override + public PluginMetadata getMetadata() { + return new PluginMetadata() { + @Override + public String getName() { + return PLUGIN_NAME; + } + }; + } + + @Override + public void register(LDClient client, EnvironmentMetadata metadata) { + String sdkKey = metadata.getSdkKey(); + + if (!options.isManualStart()) { + OtelManager.initialize(sdkKey, options); + } + + // Fetch sampling config in background + Thread samplingThread = new Thread(() -> { + try { + GraphQLClient graphQLClient = new GraphQLClient(options.getBackendUrl()); + SamplingApiService samplingService = new SamplingApiService(graphQLClient); + SamplingConfig config = samplingService.getSamplingConfig(sdkKey); + if (config != null) { + OtelManager.setSamplingConfig(config); + if (options.isDebug()) { + log.info("Loaded sampling config: " + config); + } + } + } catch (Exception e) { + log.log(Level.WARNING, "Failed to fetch sampling config", e); + } + }, "ld-observability-sampling"); + samplingThread.setDaemon(true); + samplingThread.start(); + } + + @Override + public List getHooks(EnvironmentMetadata metadata) { + TracingHook hook = new TracingHook.Builder() + .withSpans() + .withValue() + .build(); + return Collections.singletonList(hook); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java new file mode 100644 index 0000000000..25ec59bc3a --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java @@ -0,0 +1,21 @@ +package com.launchdarkly.observability.internal; + +/** + * Internal constants for the LaunchDarkly Observability SDK. + */ +public final class Constants { + private Constants() {} + + public static final String DEFAULT_OTLP_ENDPOINT = "https://otel.observability.app.launchdarkly.com:4318"; + public static final String DEFAULT_BACKEND_URL = "https://pub.observability.app.launchdarkly.com"; + public static final String INSTRUMENTATION_SCOPE_NAME = "com.launchdarkly.observability"; + public static final String INSTRUMENTATION_VERSION = "0.1.0"; + + public static final String PROJECT_ID_ATTRIBUTE = "highlight.project_id"; + public static final String ERROR_SPAN_NAME = "highlight.error"; + public static final String ATTR_SAMPLING_RATIO = "highlight.sampling.ratio"; + + public static final String TRACES_PATH = "/v1/traces"; + public static final String LOGS_PATH = "/v1/logs"; + public static final String METRICS_PATH = "/v1/metrics"; +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java new file mode 100644 index 0000000000..351b8cfee2 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java @@ -0,0 +1,115 @@ +package com.launchdarkly.observability.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; + +import java.io.BufferedReader; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.net.HttpURLConnection; +import java.net.URL; +import java.nio.charset.StandardCharsets; +import java.util.Map; +import java.util.logging.Level; +import java.util.logging.Logger; +import java.util.zip.GZIPOutputStream; + +/** + * Simple GraphQL client using {@link HttpURLConnection} and Gson. + */ +public final class GraphQLClient { + + private static final Logger log = Logger.getLogger(GraphQLClient.class.getName()); + private static final int CONNECT_TIMEOUT = 10_000; + private static final int READ_TIMEOUT = 10_000; + private static final Gson GSON = new Gson(); + + private final String endpoint; + + public GraphQLClient(String backendUrl) { + this.endpoint = backendUrl; + } + + /** + * Executes a GraphQL query and returns the parsed "data" element. + * + * @param query the GraphQL query string + * @param variables query variables + * @return the "data" JSON element from the response, or null on error + */ + public JsonElement execute(String query, Map variables) throws IOException { + JsonObject body = new JsonObject(); + body.addProperty("query", query); + body.add("variables", GSON.toJsonTree(variables)); + + byte[] payload = gzip(GSON.toJson(body).getBytes(StandardCharsets.UTF_8)); + + HttpURLConnection conn = (HttpURLConnection) new URL(endpoint).openConnection(); + try { + conn.setRequestMethod("POST"); + conn.setRequestProperty("Content-Type", "application/json"); + conn.setRequestProperty("Content-Encoding", "gzip"); + conn.setConnectTimeout(CONNECT_TIMEOUT); + conn.setReadTimeout(READ_TIMEOUT); + conn.setDoOutput(true); + + try (OutputStream os = conn.getOutputStream()) { + os.write(payload); + } + + int status = conn.getResponseCode(); + if (status < 200 || status >= 300) { + log.warning("GraphQL request failed with status " + status); + return null; + } + + String responseBody = readStream(conn.getInputStream()); + JsonObject response = GSON.fromJson(responseBody, JsonObject.class); + + if (response.has("errors") && !response.getAsJsonArray("errors").isEmpty()) { + log.warning("GraphQL errors: " + response.getAsJsonArray("errors")); + } + + return response.has("data") ? response.get("data") : null; + } finally { + conn.disconnect(); + } + } + + /** + * Loads a GraphQL query from a classpath resource file. + */ + public static String loadQuery(String resourcePath) { + try (InputStream is = GraphQLClient.class.getClassLoader().getResourceAsStream(resourcePath)) { + if (is == null) { + throw new IllegalArgumentException("Resource not found: " + resourcePath); + } + return readStream(is); + } catch (IOException e) { + throw new RuntimeException("Failed to load query from " + resourcePath, e); + } + } + + private static byte[] gzip(byte[] data) throws IOException { + ByteArrayOutputStream bos = new ByteArrayOutputStream(); + try (GZIPOutputStream gzos = new GZIPOutputStream(bos)) { + gzos.write(data); + } + return bos.toByteArray(); + } + + private static String readStream(InputStream is) throws IOException { + StringBuilder sb = new StringBuilder(); + try (BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) { + String line; + while ((line = reader.readLine()) != null) { + sb.append(line).append('\n'); + } + } + return sb.toString(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java new file mode 100644 index 0000000000..1894af9cfd --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -0,0 +1,255 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.internal.sampling.CustomSampler; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.launchdarkly.observability.internal.sampling.SamplingLogProcessor; +import com.launchdarkly.observability.internal.sampling.SamplingTraceExporter; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.metrics.Meter; +import io.opentelemetry.api.trace.Tracer; +import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator; +import io.opentelemetry.context.propagation.ContextPropagators; +import io.opentelemetry.context.propagation.TextMapPropagator; +import io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporter; +import io.opentelemetry.exporter.otlp.http.metrics.OtlpHttpMetricExporter; +import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter; +import io.opentelemetry.sdk.OpenTelemetrySdk; +import io.opentelemetry.sdk.logs.SdkLoggerProvider; +import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor; +import io.opentelemetry.sdk.metrics.SdkMeterProvider; +import io.opentelemetry.sdk.metrics.export.PeriodicMetricReader; +import io.opentelemetry.sdk.resources.Resource; +import io.opentelemetry.sdk.trace.SdkTracerProvider; +import io.opentelemetry.sdk.trace.export.BatchSpanProcessor; + +import java.time.Duration; +import java.util.concurrent.atomic.AtomicReference; +import java.util.logging.Level; + +/** + * Manages OpenTelemetry provider setup and lifecycle for LaunchDarkly Observability. + */ +public final class OtelManager { + + private static final java.util.logging.Logger log = + java.util.logging.Logger.getLogger(OtelManager.class.getName()); + + private static final AtomicReference INSTANCE = new AtomicReference<>(); + + private final SdkTracerProvider tracerProvider; + private final SdkLoggerProvider loggerProvider; + private final SdkMeterProvider meterProvider; + private final OpenTelemetrySdk openTelemetrySdk; + private final Tracer tracer; + private final Logger logger; + private final Meter meter; + private final CustomSampler customSampler; + + private OtelManager( + SdkTracerProvider tracerProvider, + SdkLoggerProvider loggerProvider, + SdkMeterProvider meterProvider, + OpenTelemetrySdk openTelemetrySdk, + CustomSampler customSampler + ) { + this.tracerProvider = tracerProvider; + this.loggerProvider = loggerProvider; + this.meterProvider = meterProvider; + this.openTelemetrySdk = openTelemetrySdk; + this.customSampler = customSampler; + + this.tracer = openTelemetrySdk.getTracer( + Constants.INSTRUMENTATION_SCOPE_NAME, + Constants.INSTRUMENTATION_VERSION + ); + this.logger = openTelemetrySdk.getLogsBridge().get( + Constants.INSTRUMENTATION_SCOPE_NAME + ); + this.meter = openTelemetrySdk.getMeter( + Constants.INSTRUMENTATION_SCOPE_NAME + ); + } + + /** + * Initializes the OTel providers with the given options and SDK key. + */ + public static void initialize(String sdkKey, ObservabilityOptions options) { + if (INSTANCE.get() != null) { + log.fine("OtelManager already initialized, skipping"); + return; + } + + Resource resource = buildResource(sdkKey, options); + String endpoint = options.getOtlpEndpoint(); + + CustomSampler customSampler = new CustomSampler(); + + // Trace exporter with sampling + OtlpHttpSpanExporter rawSpanExporter = OtlpHttpSpanExporter.builder() + .setEndpoint(endpoint + Constants.TRACES_PATH) + .setCompression("gzip") + .build(); + SamplingTraceExporter samplingTraceExporter = + new SamplingTraceExporter(rawSpanExporter, customSampler); + + SdkTracerProvider tracerProvider = SdkTracerProvider.builder() + .addSpanProcessor(BatchSpanProcessor.builder(samplingTraceExporter) + .setScheduleDelay(Duration.ofSeconds(1)) + .setExporterTimeout(Duration.ofSeconds(30)) + .build()) + .setResource(resource) + .build(); + + // Log exporter with sampling + OtlpHttpLogRecordExporter rawLogExporter = OtlpHttpLogRecordExporter.builder() + .setEndpoint(endpoint + Constants.LOGS_PATH) + .setCompression("gzip") + .build(); + BatchLogRecordProcessor batchLogProcessor = BatchLogRecordProcessor.builder(rawLogExporter) + .setExporterTimeout(Duration.ofSeconds(30)) + .build(); + SamplingLogProcessor samplingLogProcessor = + new SamplingLogProcessor(batchLogProcessor, customSampler); + + SdkLoggerProvider loggerProvider = SdkLoggerProvider.builder() + .addLogRecordProcessor(samplingLogProcessor) + .setResource(resource) + .build(); + + // Metric exporter + OtlpHttpMetricExporter metricExporter = OtlpHttpMetricExporter.builder() + .setEndpoint(endpoint + Constants.METRICS_PATH) + .setCompression("gzip") + .build(); + + SdkMeterProvider meterProvider = SdkMeterProvider.builder() + .registerMetricReader(PeriodicMetricReader.builder(metricExporter) + .setInterval(Duration.ofSeconds(5)) + .build()) + .setResource(resource) + .build(); + + // Propagator + TextMapPropagator propagator = W3CTraceContextPropagator.getInstance(); + + OpenTelemetrySdk sdk; + try { + sdk = OpenTelemetrySdk.builder() + .setTracerProvider(tracerProvider) + .setLoggerProvider(loggerProvider) + .setMeterProvider(meterProvider) + .setPropagators(ContextPropagators.create(propagator)) + .buildAndRegisterGlobal(); + } catch (IllegalStateException e) { + // GlobalOpenTelemetry was already set (e.g., by user's own config). + // Build without registering globally; TracingHook will use whatever + // is globally registered. + log.log(Level.WARNING, + "GlobalOpenTelemetry already set. Building SDK without global registration.", e); + sdk = OpenTelemetrySdk.builder() + .setTracerProvider(tracerProvider) + .setLoggerProvider(loggerProvider) + .setMeterProvider(meterProvider) + .setPropagators(ContextPropagators.create(propagator)) + .build(); + } + + OtelManager manager = new OtelManager( + tracerProvider, loggerProvider, meterProvider, sdk, customSampler); + INSTANCE.set(manager); + + // Register shutdown hook + Runtime.getRuntime().addShutdownHook(new Thread(() -> { + OtelManager m = INSTANCE.get(); + if (m != null) { + m.shutdownProviders(); + } + })); + + if (options.isDebug()) { + log.info("OtelManager initialized with endpoint: " + endpoint); + } + } + + /** + * Sets the sampling configuration received from the backend. + */ + public static void setSamplingConfig(SamplingConfig config) { + OtelManager m = INSTANCE.get(); + if (m != null) { + m.customSampler.setConfig(config); + } + } + + public static Tracer getTracer() { + OtelManager m = INSTANCE.get(); + return m != null ? m.tracer : GlobalOpenTelemetry.getTracer(Constants.INSTRUMENTATION_SCOPE_NAME); + } + + public static Logger getLogger() { + OtelManager m = INSTANCE.get(); + return m != null ? m.logger : GlobalOpenTelemetry.get().getLogsBridge().get(Constants.INSTRUMENTATION_SCOPE_NAME); + } + + public static Meter getMeter() { + OtelManager m = INSTANCE.get(); + return m != null ? m.meter : GlobalOpenTelemetry.getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); + } + + /** + * Flushes all pending telemetry data. + */ + public static void flush() { + OtelManager m = INSTANCE.get(); + if (m != null) { + m.tracerProvider.forceFlush(); + m.loggerProvider.forceFlush(); + m.meterProvider.forceFlush(); + } + } + + /** + * Shuts down all providers and flushes pending data. + */ + public static void shutdown() { + OtelManager m = INSTANCE.getAndSet(null); + if (m != null) { + m.shutdownProviders(); + } + } + + static boolean isInitialized() { + return INSTANCE.get() != null; + } + + private void shutdownProviders() { + tracerProvider.forceFlush(); + loggerProvider.forceFlush(); + meterProvider.forceFlush(); + tracerProvider.shutdown(); + loggerProvider.shutdown(); + meterProvider.shutdown(); + } + + private static Resource buildResource(String sdkKey, ObservabilityOptions options) { + io.opentelemetry.api.common.AttributesBuilder attrs = Attributes.builder(); + attrs.put(Constants.PROJECT_ID_ATTRIBUTE, sdkKey); + attrs.put("telemetry.distro.name", Constants.INSTRUMENTATION_SCOPE_NAME); + attrs.put("telemetry.distro.version", Constants.INSTRUMENTATION_VERSION); + + if (options.getServiceName() != null && !options.getServiceName().isEmpty()) { + attrs.put("service.name", options.getServiceName()); + } + if (options.getServiceVersion() != null && !options.getServiceVersion().isEmpty()) { + attrs.put("service.version", options.getServiceVersion()); + } + if (options.getEnvironment() != null && !options.getEnvironment().isEmpty()) { + attrs.put("deployment.environment.name", options.getEnvironment()); + } + + return Resource.getDefault().merge(Resource.create(attrs.build())); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java new file mode 100644 index 0000000000..c0b2e93556 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -0,0 +1,135 @@ +package com.launchdarkly.observability.internal; + +import com.google.gson.Gson; +import com.google.gson.JsonArray; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.AttributeMatchConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.LogSamplingConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.MatchConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.SpanEventMatchConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.SpanSamplingConfig; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.logging.Level; +import java.util.logging.Logger; + +/** + * Fetches sampling configuration from the LaunchDarkly backend via GraphQL. + */ +public final class SamplingApiService { + + private static final Logger log = Logger.getLogger(SamplingApiService.class.getName()); + private static final String QUERY_FILE = "graphql/GetSamplingConfigQuery.graphql"; + + private final GraphQLClient client; + private final String query; + + public SamplingApiService(GraphQLClient client) { + this.client = client; + this.query = GraphQLClient.loadQuery(QUERY_FILE); + } + + /** + * Fetches the sampling configuration for the given SDK key. + * + * @param sdkKey the LaunchDarkly SDK key (used as organization_verbose_id) + * @return the parsed sampling configuration, or null on error + */ + public SamplingConfig getSamplingConfig(String sdkKey) { + try { + Map variables = new HashMap<>(); + variables.put("organization_verbose_id", sdkKey); + JsonElement data = client.execute(query, variables); + if (data == null || !data.isJsonObject()) { + return null; + } + JsonObject sampling = data.getAsJsonObject().getAsJsonObject("sampling"); + if (sampling == null) { + return null; + } + return parseSamplingConfig(sampling); + } catch (Exception e) { + log.log(Level.WARNING, "Failed to fetch sampling config", e); + return null; + } + } + + private SamplingConfig parseSamplingConfig(JsonObject sampling) { + List spans = new ArrayList<>(); + List logs = new ArrayList<>(); + + JsonArray spansArray = sampling.getAsJsonArray("spans"); + if (spansArray != null) { + for (JsonElement el : spansArray) { + spans.add(parseSpanConfig(el.getAsJsonObject())); + } + } + + JsonArray logsArray = sampling.getAsJsonArray("logs"); + if (logsArray != null) { + for (JsonElement el : logsArray) { + logs.add(parseLogConfig(el.getAsJsonObject())); + } + } + + return new SamplingConfig(spans, logs); + } + + private SpanSamplingConfig parseSpanConfig(JsonObject obj) { + MatchConfig name = parseMatchConfig(obj.getAsJsonObject("name")); + List attributes = parseAttributeConfigs(obj.getAsJsonArray("attributes")); + List events = new ArrayList<>(); + + JsonArray eventsArray = obj.getAsJsonArray("events"); + if (eventsArray != null) { + for (JsonElement el : eventsArray) { + JsonObject eventObj = el.getAsJsonObject(); + events.add(new SpanEventMatchConfig( + parseMatchConfig(eventObj.getAsJsonObject("name")), + parseAttributeConfigs(eventObj.getAsJsonArray("attributes")) + )); + } + } + + int ratio = obj.has("samplingRatio") ? obj.get("samplingRatio").getAsInt() : 1; + return new SpanSamplingConfig(name, attributes, events, ratio); + } + + private LogSamplingConfig parseLogConfig(JsonObject obj) { + MatchConfig message = parseMatchConfig(obj.getAsJsonObject("message")); + MatchConfig severityText = parseMatchConfig(obj.getAsJsonObject("severityText")); + List attributes = parseAttributeConfigs(obj.getAsJsonArray("attributes")); + int ratio = obj.has("samplingRatio") ? obj.get("samplingRatio").getAsInt() : 1; + return new LogSamplingConfig(message, severityText, attributes, ratio); + } + + private List parseAttributeConfigs(JsonArray array) { + if (array == null) return Collections.emptyList(); + List result = new ArrayList<>(); + for (JsonElement el : array) { + JsonObject obj = el.getAsJsonObject(); + result.add(new AttributeMatchConfig( + parseMatchConfig(obj.getAsJsonObject("key")), + parseMatchConfig(obj.getAsJsonObject("attribute")) + )); + } + return result; + } + + private MatchConfig parseMatchConfig(JsonObject obj) { + if (obj == null) return null; + if (obj.has("regexValue") && !obj.get("regexValue").isJsonNull()) { + return MatchConfig.ofRegex(obj.get("regexValue").getAsString()); + } + if (obj.has("matchValue") && !obj.get("matchValue").isJsonNull()) { + return MatchConfig.ofValue(obj.get("matchValue").getAsString()); + } + return null; + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java new file mode 100644 index 0000000000..b97c827445 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java @@ -0,0 +1,196 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.sdk.logs.data.LogRecordData; +import io.opentelemetry.sdk.trace.data.EventData; +import io.opentelemetry.sdk.trace.data.SpanData; + +import java.util.List; +import java.util.Map; +import java.util.Random; +import java.util.concurrent.atomic.AtomicReference; +import java.util.function.IntPredicate; +import java.util.regex.Pattern; + +/** + * Applies export-time sampling based on a configuration fetched from the backend. + */ +public final class CustomSampler { + + private static final String ATTR_SAMPLING_RATIO = "highlight.sampling.ratio"; + private static final AttributeKey SAMPLING_RATIO_KEY = AttributeKey.longKey(ATTR_SAMPLING_RATIO); + + private final AtomicReference configRef = new AtomicReference<>(); + private final IntPredicate sampler; + + public CustomSampler() { + this(CustomSampler::defaultSampler); + } + + /** Visible for testing — inject a deterministic sampler. */ + public CustomSampler(IntPredicate sampler) { + this.sampler = sampler; + } + + public void setConfig(SamplingConfig config) { + configRef.set(config); + } + + public boolean isSamplingEnabled() { + return configRef.get() != null; + } + + // --- Span sampling --- + + public SamplingResult sampleSpan(SpanData span) { + SamplingConfig config = configRef.get(); + if (config == null) { + return SamplingResult.SAMPLED; + } + for (SamplingConfig.SpanSamplingConfig spanConfig : config.getSpans()) { + if (matchesSpanConfig(spanConfig, span)) { + boolean keep = sampler.test(spanConfig.getSamplingRatio()); + return new SamplingResult(keep, + Attributes.of(SAMPLING_RATIO_KEY, (long) spanConfig.getSamplingRatio())); + } + } + return SamplingResult.SAMPLED; + } + + // --- Log sampling --- + + public SamplingResult sampleLog(LogRecordData log) { + SamplingConfig config = configRef.get(); + if (config == null) { + return SamplingResult.SAMPLED; + } + for (SamplingConfig.LogSamplingConfig logConfig : config.getLogs()) { + if (matchesLogConfig(logConfig, log)) { + boolean keep = sampler.test(logConfig.getSamplingRatio()); + return new SamplingResult(keep, + Attributes.of(SAMPLING_RATIO_KEY, (long) logConfig.getSamplingRatio())); + } + } + return SamplingResult.SAMPLED; + } + + // --- Matching logic --- + + private boolean matchesSpanConfig(SamplingConfig.SpanSamplingConfig config, SpanData span) { + if (config.getName() != null) { + if (!matchesValue(config.getName(), span.getName())) { + return false; + } + } + if (!matchesAttributes(config.getAttributes(), span.getAttributes())) { + return false; + } + if (!config.getEvents().isEmpty()) { + if (!matchesEvents(config.getEvents(), span.getEvents())) { + return false; + } + } + return true; + } + + private boolean matchesLogConfig(SamplingConfig.LogSamplingConfig config, LogRecordData log) { + if (config.getSeverityText() != null) { + String severity = log.getSeverity() != null ? log.getSeverity().name() : null; + if (!matchesValue(config.getSeverityText(), severity)) { + return false; + } + } + if (config.getMessage() != null) { + String body = log.getBody() != null ? log.getBody().asString() : null; + if (!matchesValue(config.getMessage(), body)) { + return false; + } + } + return matchesAttributes(config.getAttributes(), log.getAttributes()); + } + + private boolean matchesEvents(List eventConfigs, List events) { + for (SamplingConfig.SpanEventMatchConfig eventConfig : eventConfigs) { + boolean found = false; + for (EventData event : events) { + if (matchesEventConfig(eventConfig, event)) { + found = true; + break; + } + } + if (!found) { + return false; + } + } + return true; + } + + private boolean matchesEventConfig(SamplingConfig.SpanEventMatchConfig config, EventData event) { + if (config.getName() != null) { + if (!matchesValue(config.getName(), event.getName())) { + return false; + } + } + return matchesAttributes(config.getAttributes(), event.getAttributes()); + } + + private boolean matchesAttributes(List configs, Attributes attributes) { + for (SamplingConfig.AttributeMatchConfig attrConfig : configs) { + boolean found = false; + Map, Object> attrMap = attributes.asMap(); + for (Map.Entry, Object> entry : attrMap.entrySet()) { + String key = entry.getKey().getKey(); + String value = entry.getValue() != null ? entry.getValue().toString() : null; + if (matchesValue(attrConfig.getKey(), key) && matchesValue(attrConfig.getAttribute(), value)) { + found = true; + break; + } + } + if (!found) { + return false; + } + } + return true; + } + + static boolean matchesValue(SamplingConfig.MatchConfig config, String actual) { + if (config == null) { + return true; + } + if (actual == null) { + return false; + } + if (config.isRegex()) { + return Pattern.matches(config.getRegexPattern(), actual); + } else { + return config.getValue().equals(actual); + } + } + + /** + * Determine if an item should be sampled based on the sampling ratio. + * A ratio of 0 means never sample. A ratio of 1 means always sample. + * Otherwise, sample 1 in every {@code ratio} items. + */ + static boolean defaultSampler(int ratio) { + if (ratio <= 0) return false; + if (ratio == 1) return true; + return new Random().nextInt(ratio) == 0; + } + + public static final class SamplingResult { + static final SamplingResult SAMPLED = new SamplingResult(true, null); + + private final boolean sample; + private final Attributes attributes; + + public SamplingResult(boolean sample, Attributes attributes) { + this.sample = sample; + this.attributes = attributes; + } + + public boolean isSampled() { return sample; } + public Attributes getAttributes() { return attributes; } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java new file mode 100644 index 0000000000..6a9d2577a1 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -0,0 +1,140 @@ +package com.launchdarkly.observability.internal.sampling; + +import java.util.Collections; +import java.util.List; + +/** + * Sampling configuration received from the LaunchDarkly backend. + */ +public final class SamplingConfig { + + private final List spans; + private final List logs; + + public SamplingConfig(List spans, List logs) { + this.spans = spans != null ? spans : Collections.emptyList(); + this.logs = logs != null ? logs : Collections.emptyList(); + } + + public List getSpans() { return spans; } + public List getLogs() { return logs; } + + @Override + public String toString() { + return "SamplingConfig{spans=" + spans.size() + ", logs=" + logs.size() + "}"; + } + + // --- Match config types --- + + public static final class ValueMatch { + private final String value; + public ValueMatch(String value) { this.value = value; } + public String getValue() { return value; } + } + + public static final class RegexMatch { + private final String pattern; + public RegexMatch(String pattern) { this.pattern = pattern; } + public String getPattern() { return pattern; } + } + + /** + * A match config is either a ValueMatch or a RegexMatch. + * Stored as a pair: at most one of value/regex is non-null. + */ + public static final class MatchConfig { + private final String value; + private final String regexPattern; + + private MatchConfig(String value, String regexPattern) { + this.value = value; + this.regexPattern = regexPattern; + } + + public static MatchConfig ofValue(String value) { + return new MatchConfig(value, null); + } + + public static MatchConfig ofRegex(String pattern) { + return new MatchConfig(null, pattern); + } + + public boolean isRegex() { return regexPattern != null; } + public String getValue() { return value; } + public String getRegexPattern() { return regexPattern; } + } + + public static final class AttributeMatchConfig { + private final MatchConfig key; + private final MatchConfig attribute; + + public AttributeMatchConfig(MatchConfig key, MatchConfig attribute) { + this.key = key; + this.attribute = attribute; + } + + public MatchConfig getKey() { return key; } + public MatchConfig getAttribute() { return attribute; } + } + + public static final class SpanEventMatchConfig { + private final MatchConfig name; + private final List attributes; + + public SpanEventMatchConfig(MatchConfig name, List attributes) { + this.name = name; + this.attributes = attributes != null ? attributes : Collections.emptyList(); + } + + public MatchConfig getName() { return name; } + public List getAttributes() { return attributes; } + } + + public static final class SpanSamplingConfig { + private final MatchConfig name; + private final List attributes; + private final List events; + private final int samplingRatio; + + public SpanSamplingConfig( + MatchConfig name, + List attributes, + List events, + int samplingRatio + ) { + this.name = name; + this.attributes = attributes != null ? attributes : Collections.emptyList(); + this.events = events != null ? events : Collections.emptyList(); + this.samplingRatio = samplingRatio; + } + + public MatchConfig getName() { return name; } + public List getAttributes() { return attributes; } + public List getEvents() { return events; } + public int getSamplingRatio() { return samplingRatio; } + } + + public static final class LogSamplingConfig { + private final MatchConfig message; + private final MatchConfig severityText; + private final List attributes; + private final int samplingRatio; + + public LogSamplingConfig( + MatchConfig message, + MatchConfig severityText, + List attributes, + int samplingRatio + ) { + this.message = message; + this.severityText = severityText; + this.attributes = attributes != null ? attributes : Collections.emptyList(); + this.samplingRatio = samplingRatio; + } + + public MatchConfig getMessage() { return message; } + public MatchConfig getSeverityText() { return severityText; } + public List getAttributes() { return attributes; } + public int getSamplingRatio() { return samplingRatio; } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java new file mode 100644 index 0000000000..e864f54710 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java @@ -0,0 +1,54 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.context.Context; +import io.opentelemetry.sdk.common.CompletableResultCode; +import io.opentelemetry.sdk.logs.LogRecordProcessor; +import io.opentelemetry.sdk.logs.ReadWriteLogRecord; + +/** + * A {@link LogRecordProcessor} that applies sampling logic before delegating + * to another processor. + */ +public final class SamplingLogProcessor implements LogRecordProcessor { + + private final LogRecordProcessor delegate; + private final CustomSampler sampler; + + public SamplingLogProcessor(LogRecordProcessor delegate, CustomSampler sampler) { + this.delegate = delegate; + this.sampler = sampler; + } + + @Override + public void onEmit(Context context, ReadWriteLogRecord logRecord) { + if (!sampler.isSamplingEnabled()) { + delegate.onEmit(context, logRecord); + return; + } + + CustomSampler.SamplingResult result = sampler.sampleLog(logRecord.toLogRecordData()); + if (!result.isSampled()) { + return; + } + + if (result.getAttributes() != null) { + Attributes merged = Attributes.builder() + .putAll(logRecord.toLogRecordData().getAttributes()) + .putAll(result.getAttributes()) + .build(); + logRecord.setAllAttributes(merged); + } + delegate.onEmit(context, logRecord); + } + + @Override + public CompletableResultCode shutdown() { + return delegate.shutdown(); + } + + @Override + public CompletableResultCode forceFlush() { + return delegate.forceFlush(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java new file mode 100644 index 0000000000..c0c645e3b5 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java @@ -0,0 +1,51 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.sdk.common.CompletableResultCode; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.export.SpanExporter; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.List; + +/** + * A {@link SpanExporter} that applies sampling logic before delegating to another exporter. + */ +public final class SamplingTraceExporter implements SpanExporter { + + private final SpanExporter delegate; + private final CustomSampler sampler; + + public SamplingTraceExporter(SpanExporter delegate, CustomSampler sampler) { + this.delegate = delegate; + this.sampler = sampler; + } + + @Override + public CompletableResultCode export(Collection spans) { + if (!sampler.isSamplingEnabled()) { + return delegate.export(spans); + } + List sampled = new ArrayList<>(); + for (SpanData span : spans) { + CustomSampler.SamplingResult result = sampler.sampleSpan(span); + if (result.isSampled()) { + sampled.add(span); + } + } + if (sampled.isEmpty()) { + return CompletableResultCode.ofSuccess(); + } + return delegate.export(sampled); + } + + @Override + public CompletableResultCode flush() { + return delegate.flush(); + } + + @Override + public CompletableResultCode shutdown() { + return delegate.shutdown(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql b/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql new file mode 100644 index 0000000000..5d5d7ac053 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql @@ -0,0 +1,53 @@ +fragment MatchParts on MatchConfig { + regexValue + matchValue +} + +query GetSamplingConfig($organization_verbose_id: String!) { + sampling(organization_verbose_id: $organization_verbose_id) { + spans { + name { + ...MatchParts + } + attributes { + key { + ...MatchParts + } + attribute { + ...MatchParts + } + } + events { + name { + ...MatchParts + } + attributes { + key { + ...MatchParts + } + attribute { + ...MatchParts + } + } + } + samplingRatio + } + logs { + message { + ...MatchParts + } + severityText { + ...MatchParts + } + attributes { + key { + ...MatchParts + } + attribute { + ...MatchParts + } + } + samplingRatio + } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/LDObserveTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/LDObserveTest.java new file mode 100644 index 0000000000..e4363d5db2 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/LDObserveTest.java @@ -0,0 +1,74 @@ +package com.launchdarkly.observability; + +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import org.junit.jupiter.api.Test; + +import static org.junit.jupiter.api.Assertions.*; + +/** + * Tests that LDObserve methods are safe to call before initialization + * (they delegate to no-op OTel implementations). + */ +class LDObserveTest { + + @Test + void recordMetricBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordMetric("test.gauge", 1.0, Attributes.empty())); + } + + @Test + void recordCountBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordCount("test.count", 1, Attributes.empty())); + } + + @Test + void recordIncrBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordIncr("test.incr", Attributes.empty())); + } + + @Test + void recordHistogramBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordHistogram("test.histogram", 42.5, Attributes.empty())); + } + + @Test + void recordUpDownCounterBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordUpDownCounter("test.updown", 1, Attributes.empty())); + } + + @Test + void recordLogBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordLog("test message", Severity.INFO, Attributes.empty())); + } + + @Test + void recordErrorBeforeInitDoesNotThrow() { + assertDoesNotThrow(() -> + LDObserve.recordError(new RuntimeException("test"), Attributes.empty())); + } + + @Test + void startSpanBeforeInitReturnsNonNull() { + Span span = LDObserve.startSpan("test-span", Attributes.empty()); + assertNotNull(span); + span.end(); + } + + @Test + void flushBeforeInitDoesNotThrow() { + assertDoesNotThrow(LDObserve::flush); + } + + @Test + void shutdownBeforeInitDoesNotThrow() { + assertDoesNotThrow(LDObserve::shutdown); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java new file mode 100644 index 0000000000..2b1f02b36b --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java @@ -0,0 +1,66 @@ +package com.launchdarkly.observability; + +import com.launchdarkly.sdk.server.integrations.Hook; +import com.launchdarkly.sdk.server.integrations.PluginMetadata; +import org.junit.jupiter.api.Test; + +import java.util.List; + +import static org.junit.jupiter.api.Assertions.*; + +class ObservabilityPluginTest { + + @Test + void metadataReturnsCorrectName() { + ObservabilityOptions options = new ObservabilityOptions.Builder().build(); + ObservabilityPlugin plugin = new ObservabilityPlugin(options); + + PluginMetadata metadata = plugin.getMetadata(); + assertEquals("launchdarkly-observability", metadata.getName()); + } + + @Test + void getHooksReturnsTracingHook() { + ObservabilityOptions options = new ObservabilityOptions.Builder().build(); + ObservabilityPlugin plugin = new ObservabilityPlugin(options); + + List hooks = plugin.getHooks(null); + assertNotNull(hooks); + assertEquals(1, hooks.size()); + // The hook should be a TracingHook instance + assertNotNull(hooks.get(0)); + } + + @Test + void optionsBuilderDefaults() { + ObservabilityOptions options = new ObservabilityOptions.Builder().build(); + assertEquals("", options.getServiceName()); + assertEquals("", options.getServiceVersion()); + assertEquals("", options.getEnvironment()); + assertFalse(options.isDebug()); + assertFalse(options.isManualStart()); + assertEquals("https://otel.observability.app.launchdarkly.com:4318", options.getOtlpEndpoint()); + assertEquals("https://pub.observability.app.launchdarkly.com", options.getBackendUrl()); + } + + @Test + void optionsBuilderCustomValues() { + ObservabilityOptions options = new ObservabilityOptions.Builder() + .serviceName("test-service") + .serviceVersion("2.0.0") + .environment("staging") + .otlpEndpoint("http://localhost:4318") + .backendUrl("http://localhost:8080") + .debug(true) + .manualStart(true) + .build(); + + assertEquals("test-service", options.getServiceName()); + assertEquals("2.0.0", options.getServiceVersion()); + assertEquals("staging", options.getEnvironment()); + assertEquals("http://localhost:4318", options.getOtlpEndpoint()); + assertEquals("http://localhost:8080", options.getBackendUrl()); + assertTrue(options.isDebug()); + assertTrue(options.isManualStart()); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java new file mode 100644 index 0000000000..23faa35f67 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -0,0 +1,178 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanKind; +import io.opentelemetry.api.trace.TraceFlags; +import io.opentelemetry.api.trace.TraceState; +import io.opentelemetry.sdk.testing.trace.TestSpanData; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.data.StatusData; +import org.junit.jupiter.api.Test; + +import java.util.Collections; +import java.util.List; + +import static org.junit.jupiter.api.Assertions.*; + +class CustomSamplerTest { + + // Deterministic sampler that always samples (ratio >= 1) + private static final CustomSampler ALWAYS_SAMPLE = new CustomSampler(ratio -> true); + // Deterministic sampler that never samples (used when ratio config matches) + private static final CustomSampler NEVER_SAMPLE = new CustomSampler(ratio -> false); + + @Test + void noConfigAlwaysSamples() { + CustomSampler sampler = new CustomSampler(); + SpanData span = createTestSpan("test-span", Attributes.empty()); + CustomSampler.SamplingResult result = sampler.sampleSpan(span); + assertTrue(result.isSampled()); + } + + @Test + void spanNameValueMatchFilters() { + SamplingConfig config = new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("health-check"), + Collections.emptyList(), + Collections.emptyList(), + 1 + )), + Collections.emptyList() + ); + + NEVER_SAMPLE.setConfig(config); + + // Matching span should be filtered (NEVER_SAMPLE says no) + SpanData healthSpan = createTestSpan("health-check", Attributes.empty()); + CustomSampler.SamplingResult result = NEVER_SAMPLE.sampleSpan(healthSpan); + assertFalse(result.isSampled()); + + // Non-matching span should pass through (no config match = always sample) + SpanData otherSpan = createTestSpan("user-request", Attributes.empty()); + result = NEVER_SAMPLE.sampleSpan(otherSpan); + assertTrue(result.isSampled()); + } + + @Test + void spanNameRegexMatchFilters() { + SamplingConfig config = new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofRegex("health.*"), + Collections.emptyList(), + Collections.emptyList(), + 1 + )), + Collections.emptyList() + ); + + NEVER_SAMPLE.setConfig(config); + + SpanData healthSpan = createTestSpan("health-check", Attributes.empty()); + assertFalse(NEVER_SAMPLE.sampleSpan(healthSpan).isSampled()); + + SpanData otherSpan = createTestSpan("user-request", Attributes.empty()); + assertTrue(NEVER_SAMPLE.sampleSpan(otherSpan).isSampled()); + } + + @Test + void spanAttributeMatchFilters() { + SamplingConfig config = new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + null, + List.of(new SamplingConfig.AttributeMatchConfig( + SamplingConfig.MatchConfig.ofValue("http.route"), + SamplingConfig.MatchConfig.ofValue("/health") + )), + Collections.emptyList(), + 1 + )), + Collections.emptyList() + ); + + NEVER_SAMPLE.setConfig(config); + + Attributes matchAttrs = Attributes.of(AttributeKey.stringKey("http.route"), "/health"); + assertFalse(NEVER_SAMPLE.sampleSpan(createTestSpan("request", matchAttrs)).isSampled()); + + Attributes noMatchAttrs = Attributes.of(AttributeKey.stringKey("http.route"), "/api/users"); + assertTrue(NEVER_SAMPLE.sampleSpan(createTestSpan("request", noMatchAttrs)).isSampled()); + } + + @Test + void matchConfigAlwaysSampleReturnsAttributes() { + SamplingConfig config = new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("my-span"), + Collections.emptyList(), + Collections.emptyList(), + 5 + )), + Collections.emptyList() + ); + + ALWAYS_SAMPLE.setConfig(config); + SpanData span = createTestSpan("my-span", Attributes.empty()); + CustomSampler.SamplingResult result = ALWAYS_SAMPLE.sampleSpan(span); + assertTrue(result.isSampled()); + assertNotNull(result.getAttributes()); + assertEquals(5L, result.getAttributes().get(AttributeKey.longKey("highlight.sampling.ratio"))); + } + + @Test + void matchesValueHelperExactMatch() { + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofValue("hello"), "hello")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofValue("hello"), "world")); + } + + @Test + void matchesValueHelperRegex() { + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("hel.*"), "hello")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("^world$"), "hello")); + } + + @Test + void matchesValueNullConfigAlwaysMatches() { + assertTrue(CustomSampler.matchesValue(null, "anything")); + } + + @Test + void matchesValueNullActualNeverMatches() { + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofValue("test"), null)); + } + + @Test + void defaultSamplerBehavior() { + assertFalse(CustomSampler.defaultSampler(0)); + assertTrue(CustomSampler.defaultSampler(1)); + // ratio of 2 should sample ~50% (not deterministic, but at least doesn't throw) + CustomSampler.defaultSampler(2); + } + + // --- Helper to create a minimal SpanData using SDK testing utilities --- + + private static SpanData createTestSpan(String name, Attributes attributes) { + return TestSpanData.builder() + .setName(name) + .setKind(SpanKind.INTERNAL) + .setSpanContext(SpanContext.create( + "00000000000000000000000000000001", + "0000000000000001", + TraceFlags.getSampled(), + TraceState.getDefault() + )) + .setStatus(StatusData.unset()) + .setHasEnded(true) + .setStartEpochNanos(0) + .setEndEpochNanos(1) + .setAttributes(attributes) + .build(); + } +} diff --git a/sdk/@launchdarkly/observability-java/settings.gradle.kts b/sdk/@launchdarkly/observability-java/settings.gradle.kts new file mode 100644 index 0000000000..d8eb54add9 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/settings.gradle.kts @@ -0,0 +1,2 @@ +rootProject.name = "observability-java" +include("lib") From afa87fb80f9b71818bd6c314027922b3fe914aef Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 19 Feb 2026 14:21:31 -0600 Subject: [PATCH 02/47] ci --- .github/workflows/java-observability.yml | 46 ++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 .github/workflows/java-observability.yml diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml new file mode 100644 index 0000000000..8fda7d1e9d --- /dev/null +++ b/.github/workflows/java-observability.yml @@ -0,0 +1,46 @@ +name: 'Java Observability' + +on: + push: + branches: ['main'] + paths: + - 'sdk/@launchdarkly/observability-java/**' + - '.github/workflows/java-observability.yml' + pull_request: + types: [opened, synchronize] + paths: + - 'sdk/@launchdarkly/observability-java/**' + - '.github/workflows/java-observability.yml' + +permissions: + contents: read + +concurrency: ${{ github.workflow }}-${{ github.ref }} +jobs: + test: + name: Unit Tests + runs-on: ubuntu-latest + defaults: + run: + working-directory: ./sdk/@launchdarkly/observability-java + steps: + - uses: actions/checkout@v4 + with: + token: ${{ secrets.GITHUB_TOKEN }} + + - name: Set up JDK 21 + uses: actions/setup-java@v4 + with: + distribution: 'temurin' + java-version: 21 + + - name: Build and test + run: ./gradlew :lib:build + + - name: Upload test reports + if: always() + uses: actions/upload-artifact@v4 + with: + name: java-unit-test-results + path: sdk/@launchdarkly/observability-java/**/build/test-results/**/TEST-*.xml + retention-days: 7 From a3cd539b296237df54acbe0fabf78b7e4d042192 Mon Sep 17 00:00:00 2001 From: Cursor Agent Date: Fri, 2 Oct 2026 18:33:20 +0000 Subject: [PATCH 03/47] fix: make the Java observability plugin safe on a server Cache the sampling query, synchronize provider startup, keep sampling config across manual start, and attach launchdarkly.sampling.ratio on exported spans. Replace the Kotlin Gradle scripts with Groovy and drop the committed Gradle cache. Co-authored-by: Vadim Korolik --- .github/workflows/java-observability.yml | 2 +- .release-please-manifest.json | 1 + .../observability-java/.gitignore | 5 + .../.gradle/8.14.3/checksums/checksums.lock | Bin 17 -> 0 bytes .../8.14.3/checksums/md5-checksums.bin | Bin 21997 -> 0 bytes .../8.14.3/checksums/sha1-checksums.bin | Bin 24653 -> 0 bytes .../executionHistory/executionHistory.bin | Bin 134528 -> 0 bytes .../executionHistory/executionHistory.lock | Bin 17 -> 0 bytes .../.gradle/8.14.3/fileChanges/last-build.bin | Bin 1 -> 0 bytes .../.gradle/8.14.3/fileHashes/fileHashes.bin | Bin 24497 -> 0 bytes .../.gradle/8.14.3/fileHashes/fileHashes.lock | Bin 17 -> 0 bytes .../8.14.3/fileHashes/resourceHashesCache.bin | Bin 19789 -> 0 bytes .../.gradle/8.14.3/gc.properties | 0 .../buildOutputCleanup.lock | Bin 17 -> 0 bytes .../buildOutputCleanup/cache.properties | 2 - .../buildOutputCleanup/outputFiles.bin | Bin 19289 -> 0 bytes .../.gradle/file-system.probe | Bin 8 -> 0 bytes .../.gradle/vcs-1/gc.properties | 0 .../observability-java/README.md | 6 +- .../observability-java/build.gradle | 15 ++ .../observability-java/build.gradle.kts | 15 -- .../observability-java/lib/build.gradle | 93 ++++++++ .../observability-java/lib/build.gradle.kts | 101 -------- .../observability/internal/Constants.java | 2 +- .../observability/internal/GraphQLClient.java | 13 +- .../observability/internal/OtelManager.java | 113 ++++++--- .../internal/SamplingApiService.java | 6 +- .../internal/sampling/CustomSampler.java | 17 +- .../internal/sampling/SamplingConfig.java | 45 ++-- .../sampling/SamplingTraceExporter.java | 129 +++++++++- .../ObservabilityPluginTest.java | 8 +- .../internal/GraphQLClientTest.java | 35 +++ .../internal/OtelManagerTest.java | 97 ++++++++ .../internal/PluginUserFlowTest.java | 220 ++++++++++++++++++ .../internal/sampling/CustomSamplerTest.java | 14 +- .../sampling/SamplingTraceExporterTest.java | 121 ++++++++++ .../observability-java/settings.gradle | 2 + .../observability-java/settings.gradle.kts | 2 - 38 files changed, 863 insertions(+), 201 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/.gitignore delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/checksums.lock delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/md5-checksums.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/checksums/sha1-checksums.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/executionHistory/executionHistory.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/executionHistory/executionHistory.lock delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileChanges/last-build.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/fileHashes.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/fileHashes.lock delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/fileHashes/resourceHashesCache.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/8.14.3/gc.properties delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/buildOutputCleanup.lock delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/file-system.probe delete mode 100644 sdk/@launchdarkly/observability-java/.gradle/vcs-1/gc.properties create mode 100644 sdk/@launchdarkly/observability-java/build.gradle delete mode 100644 sdk/@launchdarkly/observability-java/build.gradle.kts create mode 100644 sdk/@launchdarkly/observability-java/lib/build.gradle delete mode 100644 sdk/@launchdarkly/observability-java/lib/build.gradle.kts create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporterTest.java create mode 100644 sdk/@launchdarkly/observability-java/settings.gradle delete mode 100644 sdk/@launchdarkly/observability-java/settings.gradle.kts diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml index 8fda7d1e9d..aa1b16a846 100644 --- a/.github/workflows/java-observability.yml +++ b/.github/workflows/java-observability.yml @@ -19,7 +19,7 @@ concurrency: ${{ github.workflow }}-${{ github.ref }} jobs: test: name: Unit Tests - runs-on: ubuntu-latest + runs-on: ubuntu-22.04-8core-32gb defaults: run: working-directory: ./sdk/@launchdarkly/observability-java diff --git a/.release-please-manifest.json b/.release-please-manifest.json index 680e7c116d..3614a53513 100644 --- a/.release-please-manifest.json +++ b/.release-please-manifest.json @@ -4,6 +4,7 @@ "sdk/@launchdarkly/observability": "1.2.1", "sdk/@launchdarkly/observability-next": "0.3.1", "sdk/@launchdarkly/observability-android": "0.69.0", + "sdk/@launchdarkly/observability-java": "0.1.0", "sdk/flutter/packages/observability": "1.0.2", "sdk/@launchdarkly/observability-dotnet": "1.2.1", "sdk/@launchdarkly/observability-node": "1.4.0", diff --git a/sdk/@launchdarkly/observability-java/.gitignore b/sdk/@launchdarkly/observability-java/.gitignore new file mode 100644 index 0000000000..1b6985c009 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/.gitignore @@ -0,0 +1,5 @@ +# Ignore Gradle project-specific cache directory 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a/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/cache.properties +++ /dev/null @@ -1,2 +0,0 @@ -#Thu Feb 19 11:31:22 CST 2026 -gradle.version=8.14.3 diff --git a/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin b/sdk/@launchdarkly/observability-java/.gradle/buildOutputCleanup/outputFiles.bin deleted file mode 100644 index 7772875c9ea99054ea382660763c789ffcf648eb..0000000000000000000000000000000000000000 GIT binary patch literal 0 HcmV?d00001 literal 19289 zcmeI%X-E`d9LModQ}e#d6;jNjC~4DF)HE>D_DCd3Gf|_+GKvlpbu&yQBc&`0OsqD@ ziv+_?%>$LRQpmh8GNnT)e4$~booZ{(^H*Zugd{}$24;8o%rpO;`Lg?J*9n5P=_KET znayhE5JxD00w{n2D1ZVefC4Ch0w{n2D1ZVefC4Ch0w{n2D1ZY0N`X+-gXpt|v3Aj% zIxtBTgq4P>1DEuZ`-W3AKJwGDH2VJ_%d*6%*)wD@yG-_c+T*NNE1g~+?iJ)Yb_ue+@-Z=UNk4h+x$J~OFHOGSMB1@fwwmD@&bBkpq-kvH`;Om-e`P%@WAk+)=ao-pWb{>EIsp8QFwyT7)7 zS}Ai$8F`0Ccb@m>Gx2=RdGb#EoJe_VNey#p26=x^Y-Fu%Jb4KDP)v|=%bo6VKK~;5 zaF>N3whyZ0UPu1ra*fsak;oA~fBUre#hX70PT)PIFUU1~w&n-y^|E8@WpZ-Ewv?Ld z+M)sOR^%4Z3db>P9}Dh9M`LX6Dkzg0=V@j08w#Z?i`BN^s7%w01BW03ZMWApa2S>01BW03ZMWA zpa2S>01BW03ZMWApa2S>01BW03ZMWApa2S>01BW03ZMWA{0#+Gscu3~wQKNQF#biR p`2P^qgU->D&TjJDU8O#GcB1~>_? { - useJUnitPlatform() -} - -tasks.withType { - (options as StandardJavadocDocletOptions).addStringOption("Xdoclint:none", "-quiet") -} - -publishing { - publications { - create("release") { - groupId = "com.launchdarkly" - artifactId = "launchdarkly-observability-java" - version = releaseVersion - - from(components["java"]) - - pom { - name.set("LaunchDarkly Observability Java SDK") - description.set( - "Official LaunchDarkly Observability Java SDK for use with the LaunchDarkly Java Server SDK." - ) - url.set("https://github.com/launchdarkly/observability-sdk/") - organization { - name.set("LaunchDarkly") - url.set("https://launchdarkly.com/") - } - developers { - developer { - id.set("sdks") - name.set("LaunchDarkly SDK Team") - email.set("sdks@launchdarkly.com") - } - } - licenses { - license { - name.set("The Apache License, Version 2.0") - url.set("http://www.apache.org/licenses/LICENSE-2.0.txt") - } - } - scm { - connection.set( - "scm:git:https://github.com/launchdarkly/observability-sdk.git" - ) - developerConnection.set( - "scm:git:ssh:github.com/launchdarkly/observability-sdk.git" - ) - url.set("https://github.com/launchdarkly/observability-sdk/") - } - } - } - } -} - -signing { - sign(publishing.publications["release"]) -} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java index 25ec59bc3a..f5659725ff 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java @@ -13,7 +13,7 @@ private Constants() {} public static final String PROJECT_ID_ATTRIBUTE = "highlight.project_id"; public static final String ERROR_SPAN_NAME = "highlight.error"; - public static final String ATTR_SAMPLING_RATIO = "highlight.sampling.ratio"; + public static final String ATTR_SAMPLING_RATIO = "launchdarkly.sampling.ratio"; public static final String TRACES_PATH = "/v1/traces"; public static final String LOGS_PATH = "/v1/logs"; diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java index 351b8cfee2..f655a7ddc6 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java @@ -14,7 +14,7 @@ import java.net.URL; import java.nio.charset.StandardCharsets; import java.util.Map; -import java.util.logging.Level; +import java.util.concurrent.ConcurrentHashMap; import java.util.logging.Logger; import java.util.zip.GZIPOutputStream; @@ -27,6 +27,7 @@ public final class GraphQLClient { private static final int CONNECT_TIMEOUT = 10_000; private static final int READ_TIMEOUT = 10_000; private static final Gson GSON = new Gson(); + private static final ConcurrentHashMap QUERY_CACHE = new ConcurrentHashMap<>(); private final String endpoint; @@ -81,9 +82,17 @@ public JsonElement execute(String query, Map variables) throws I } /** - * Loads a GraphQL query from a classpath resource file. + * Loads a GraphQL query from a classpath resource. + * + *

The resource is read at most once per path. Concurrent callers share + * the cached string, so a server process does not re-read the query for + * every request or every client.

*/ public static String loadQuery(String resourcePath) { + return QUERY_CACHE.computeIfAbsent(resourcePath, GraphQLClient::readQuery); + } + + private static String readQuery(String resourcePath) { try (InputStream is = GraphQLClient.class.getClassLoader().getResourceAsStream(resourcePath)) { if (is == null) { throw new IllegalArgumentException("Resource not found: " + resourcePath); diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 1894af9cfd..ba33e23300 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -26,6 +26,7 @@ import io.opentelemetry.sdk.trace.export.BatchSpanProcessor; import java.time.Duration; +import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; import java.util.logging.Level; @@ -38,6 +39,9 @@ public final class OtelManager { java.util.logging.Logger.getLogger(OtelManager.class.getName()); private static final AtomicReference INSTANCE = new AtomicReference<>(); + private static final AtomicReference PENDING_SAMPLING_CONFIG = new AtomicReference<>(); + private static final Object INIT_LOCK = new Object(); + private static Thread shutdownHook; private final SdkTracerProvider tracerProvider; private final SdkLoggerProvider loggerProvider; @@ -75,13 +79,34 @@ private OtelManager( /** * Initializes the OTel providers with the given options and SDK key. + * + *

Safe for concurrent callers. Only the first call builds providers and + * registers a shutdown hook. Sampling configuration fetched before this + * returns is applied to the new sampler.

*/ public static void initialize(String sdkKey, ObservabilityOptions options) { - if (INSTANCE.get() != null) { - log.fine("OtelManager already initialized, skipping"); - return; + synchronized (INIT_LOCK) { + if (INSTANCE.get() != null) { + log.fine("OtelManager already initialized, skipping"); + return; + } + OtelManager manager = create(sdkKey, options); + INSTANCE.set(manager); + SamplingConfig pending = PENDING_SAMPLING_CONFIG.get(); + if (pending != null) { + manager.customSampler.setConfig(pending); + } + shutdownHook = new Thread(() -> { + OtelManager current = INSTANCE.get(); + if (current != null) { + current.shutdownProviders(); + } + }, "ld-observability-shutdown"); + Runtime.getRuntime().addShutdownHook(shutdownHook); } + } + private static OtelManager create(String sdkKey, ObservabilityOptions options) { Resource resource = buildResource(sdkKey, options); String endpoint = options.getOtlpEndpoint(); @@ -159,28 +184,25 @@ public static void initialize(String sdkKey, ObservabilityOptions options) { OtelManager manager = new OtelManager( tracerProvider, loggerProvider, meterProvider, sdk, customSampler); - INSTANCE.set(manager); - - // Register shutdown hook - Runtime.getRuntime().addShutdownHook(new Thread(() -> { - OtelManager m = INSTANCE.get(); - if (m != null) { - m.shutdownProviders(); - } - })); if (options.isDebug()) { log.info("OtelManager initialized with endpoint: " + endpoint); } + return manager; } /** * Sets the sampling configuration received from the backend. + * + *

If providers have not been started yet (manual start), the config is + * kept and applied when {@link #initialize} runs. Concurrent callers share + * one config reference; the latest write wins.

*/ public static void setSamplingConfig(SamplingConfig config) { - OtelManager m = INSTANCE.get(); - if (m != null) { - m.customSampler.setConfig(config); + PENDING_SAMPLING_CONFIG.set(config); + OtelManager manager = INSTANCE.get(); + if (manager != null) { + manager.customSampler.setConfig(config); } } @@ -203,11 +225,9 @@ public static Meter getMeter() { * Flushes all pending telemetry data. */ public static void flush() { - OtelManager m = INSTANCE.get(); - if (m != null) { - m.tracerProvider.forceFlush(); - m.loggerProvider.forceFlush(); - m.meterProvider.forceFlush(); + OtelManager manager = INSTANCE.get(); + if (manager != null) { + manager.flushProviders(); } } @@ -215,9 +235,12 @@ public static void flush() { * Shuts down all providers and flushes pending data. */ public static void shutdown() { - OtelManager m = INSTANCE.getAndSet(null); - if (m != null) { - m.shutdownProviders(); + OtelManager manager; + synchronized (INIT_LOCK) { + manager = INSTANCE.getAndSet(null); + } + if (manager != null) { + manager.shutdownProviders(); } } @@ -225,13 +248,45 @@ static boolean isInitialized() { return INSTANCE.get() != null; } + static boolean isSamplingConfigured() { + OtelManager manager = INSTANCE.get(); + return manager != null && manager.customSampler.isSamplingEnabled(); + } + + /** + * Drops process-wide state so tests can initialize again. Removes the + * shutdown hook registered by {@link #initialize}. + */ + static void resetForTest() { + OtelManager manager; + synchronized (INIT_LOCK) { + manager = INSTANCE.getAndSet(null); + PENDING_SAMPLING_CONFIG.set(null); + if (shutdownHook != null) { + try { + Runtime.getRuntime().removeShutdownHook(shutdownHook); + } catch (IllegalStateException ignored) { + // JVM shutdown is already in progress. + } + shutdownHook = null; + } + } + if (manager != null) { + manager.shutdownProviders(); + } + } + + private void flushProviders() { + tracerProvider.forceFlush().join(10, TimeUnit.SECONDS); + loggerProvider.forceFlush().join(10, TimeUnit.SECONDS); + meterProvider.forceFlush().join(10, TimeUnit.SECONDS); + } + private void shutdownProviders() { - tracerProvider.forceFlush(); - loggerProvider.forceFlush(); - meterProvider.forceFlush(); - tracerProvider.shutdown(); - loggerProvider.shutdown(); - meterProvider.shutdown(); + flushProviders(); + tracerProvider.shutdown().join(10, TimeUnit.SECONDS); + loggerProvider.shutdown().join(10, TimeUnit.SECONDS); + meterProvider.shutdown().join(10, TimeUnit.SECONDS); } private static Resource buildResource(String sdkKey, ObservabilityOptions options) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index c0b2e93556..d729022b09 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -27,12 +27,12 @@ public final class SamplingApiService { private static final Logger log = Logger.getLogger(SamplingApiService.class.getName()); private static final String QUERY_FILE = "graphql/GetSamplingConfigQuery.graphql"; + private static final String QUERY = GraphQLClient.loadQuery(QUERY_FILE); + private final GraphQLClient client; - private final String query; public SamplingApiService(GraphQLClient client) { this.client = client; - this.query = GraphQLClient.loadQuery(QUERY_FILE); } /** @@ -45,7 +45,7 @@ public SamplingConfig getSamplingConfig(String sdkKey) { try { Map variables = new HashMap<>(); variables.put("organization_verbose_id", sdkKey); - JsonElement data = client.execute(query, variables); + JsonElement data = client.execute(QUERY, variables); if (data == null || !data.isJsonObject()) { return null; } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java index b97c827445..9325e8a41e 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java @@ -6,20 +6,21 @@ import io.opentelemetry.sdk.trace.data.EventData; import io.opentelemetry.sdk.trace.data.SpanData; +import com.launchdarkly.observability.internal.Constants; + import java.util.List; import java.util.Map; -import java.util.Random; +import java.util.concurrent.ThreadLocalRandom; import java.util.concurrent.atomic.AtomicReference; import java.util.function.IntPredicate; -import java.util.regex.Pattern; /** * Applies export-time sampling based on a configuration fetched from the backend. */ public final class CustomSampler { - private static final String ATTR_SAMPLING_RATIO = "highlight.sampling.ratio"; - private static final AttributeKey SAMPLING_RATIO_KEY = AttributeKey.longKey(ATTR_SAMPLING_RATIO); + private static final AttributeKey SAMPLING_RATIO_KEY = + AttributeKey.longKey(Constants.ATTR_SAMPLING_RATIO); private final AtomicReference configRef = new AtomicReference<>(); private final IntPredicate sampler; @@ -161,11 +162,7 @@ static boolean matchesValue(SamplingConfig.MatchConfig config, String actual) { if (actual == null) { return false; } - if (config.isRegex()) { - return Pattern.matches(config.getRegexPattern(), actual); - } else { - return config.getValue().equals(actual); - } + return config.matches(actual); } /** @@ -176,7 +173,7 @@ static boolean matchesValue(SamplingConfig.MatchConfig config, String actual) { static boolean defaultSampler(int ratio) { if (ratio <= 0) return false; if (ratio == 1) return true; - return new Random().nextInt(ratio) == 0; + return ThreadLocalRandom.current().nextInt(ratio) == 0; } public static final class SamplingResult { diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java index 6a9d2577a1..5123e437a2 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -2,6 +2,8 @@ import java.util.Collections; import java.util.List; +import java.util.regex.Pattern; +import java.util.regex.PatternSyntaxException; /** * Sampling configuration received from the LaunchDarkly backend. @@ -24,44 +26,49 @@ public String toString() { return "SamplingConfig{spans=" + spans.size() + ", logs=" + logs.size() + "}"; } - // --- Match config types --- - - public static final class ValueMatch { - private final String value; - public ValueMatch(String value) { this.value = value; } - public String getValue() { return value; } - } - - public static final class RegexMatch { - private final String pattern; - public RegexMatch(String pattern) { this.pattern = pattern; } - public String getPattern() { return pattern; } - } - /** - * A match config is either a ValueMatch or a RegexMatch. - * Stored as a pair: at most one of value/regex is non-null. + * A match config is either an exact value or a regular expression. + * The pattern is compiled once so export-time matching does not recompile + * it on every span or log. */ public static final class MatchConfig { private final String value; private final String regexPattern; + private final Pattern compiledRegex; - private MatchConfig(String value, String regexPattern) { + private MatchConfig(String value, String regexPattern, Pattern compiledRegex) { this.value = value; this.regexPattern = regexPattern; + this.compiledRegex = compiledRegex; } public static MatchConfig ofValue(String value) { - return new MatchConfig(value, null); + return new MatchConfig(value, null, null); } public static MatchConfig ofRegex(String pattern) { - return new MatchConfig(null, pattern); + Pattern compiled = null; + try { + compiled = Pattern.compile(pattern); + } catch (PatternSyntaxException ignored) { + // An invalid rule never matches, instead of failing the export. + } + return new MatchConfig(null, pattern, compiled); } public boolean isRegex() { return regexPattern != null; } public String getValue() { return value; } public String getRegexPattern() { return regexPattern; } + + public boolean matches(String actual) { + if (actual == null) { + return false; + } + if (regexPattern != null) { + return compiledRegex != null && compiledRegex.matcher(actual).matches(); + } + return value != null && value.equals(actual); + } } public static final class AttributeMatchConfig { diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java index c0c645e3b5..da08237723 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java @@ -1,15 +1,28 @@ package com.launchdarkly.observability.internal.sampling; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanKind; import io.opentelemetry.sdk.common.CompletableResultCode; +import io.opentelemetry.sdk.resources.Resource; +import io.opentelemetry.sdk.trace.data.EventData; +import io.opentelemetry.sdk.trace.data.LinkData; import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.data.StatusData; import io.opentelemetry.sdk.trace.export.SpanExporter; +import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Collection; +import java.util.HashMap; import java.util.List; +import java.util.Map; /** * A {@link SpanExporter} that applies sampling logic before delegating to another exporter. + * + *

Sampled spans keep the sampling-ratio attributes returned by {@link CustomSampler}. + * Children of a dropped span are dropped with it, matching the other LaunchDarkly SDKs.

*/ public final class SamplingTraceExporter implements SpanExporter { @@ -23,20 +36,57 @@ public SamplingTraceExporter(SpanExporter delegate, CustomSampler sampler) { @Override public CompletableResultCode export(Collection spans) { + List sampled = sampleSpans(spans); + if (sampled.isEmpty()) { + return CompletableResultCode.ofSuccess(); + } + return delegate.export(sampled); + } + + private List sampleSpans(Collection spans) { if (!sampler.isSamplingEnabled()) { - return delegate.export(spans); + return new ArrayList<>(spans); } - List sampled = new ArrayList<>(); + + ArrayDeque omittedSpanIds = new ArrayDeque<>(); + Map spanById = new HashMap<>(); + Map> childrenByParentId = new HashMap<>(); + for (SpanData span : spans) { + String spanId = span.getSpanId(); + SpanContext parent = span.getParentSpanContext(); + if (parent != null && parent.isValid()) { + childrenByParentId + .computeIfAbsent(parent.getSpanId(), ignored -> new ArrayList<>()) + .add(spanId); + } + CustomSampler.SamplingResult result = sampler.sampleSpan(span); if (result.isSampled()) { - sampled.add(span); + Attributes extra = result.getAttributes(); + if (extra != null && !extra.isEmpty()) { + spanById.put(spanId, new AttributedSpanData(span, extra)); + } else { + spanById.put(spanId, span); + } + } else { + omittedSpanIds.add(spanId); } } - if (sampled.isEmpty()) { - return CompletableResultCode.ofSuccess(); + + while (!omittedSpanIds.isEmpty()) { + String spanId = omittedSpanIds.removeFirst(); + List children = childrenByParentId.get(spanId); + if (children == null) { + continue; + } + for (String childId : children) { + spanById.remove(childId); + omittedSpanIds.add(childId); + } } - return delegate.export(sampled); + + return new ArrayList<>(spanById.values()); } @Override @@ -48,4 +98,71 @@ public CompletableResultCode flush() { public CompletableResultCode shutdown() { return delegate.shutdown(); } + + /** + * SpanData view that merges sampling attributes onto the original span. + */ + @SuppressWarnings("deprecation") + private static final class AttributedSpanData implements SpanData { + private final SpanData delegate; + private final Attributes attributes; + + AttributedSpanData(SpanData delegate, Attributes extra) { + this.delegate = delegate; + this.attributes = Attributes.builder() + .putAll(delegate.getAttributes()) + .putAll(extra) + .build(); + } + + @Override + public String getName() { return delegate.getName(); } + + @Override + public SpanKind getKind() { return delegate.getKind(); } + + @Override + public SpanContext getSpanContext() { return delegate.getSpanContext(); } + + @Override + public SpanContext getParentSpanContext() { return delegate.getParentSpanContext(); } + + @Override + public StatusData getStatus() { return delegate.getStatus(); } + + @Override + public long getStartEpochNanos() { return delegate.getStartEpochNanos(); } + + @Override + public Attributes getAttributes() { return attributes; } + + @Override + public List getEvents() { return delegate.getEvents(); } + + @Override + public List getLinks() { return delegate.getLinks(); } + + @Override + public long getEndEpochNanos() { return delegate.getEndEpochNanos(); } + + @Override + public boolean hasEnded() { return delegate.hasEnded(); } + + @Override + public int getTotalRecordedEvents() { return delegate.getTotalRecordedEvents(); } + + @Override + public int getTotalRecordedLinks() { return delegate.getTotalRecordedLinks(); } + + @Override + public int getTotalAttributeCount() { return attributes.size(); } + + @Override + public io.opentelemetry.sdk.common.InstrumentationLibraryInfo getInstrumentationLibraryInfo() { + return delegate.getInstrumentationLibraryInfo(); + } + + @Override + public Resource getResource() { return delegate.getResource(); } + } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java index 2b1f02b36b..fe99a2a976 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java @@ -49,8 +49,8 @@ void optionsBuilderCustomValues() { .serviceName("test-service") .serviceVersion("2.0.0") .environment("staging") - .otlpEndpoint("http://localhost:4318") - .backendUrl("http://localhost:8080") + .otlpEndpoint("https://otel.example.test:4318") + .backendUrl("https://backend.example.test") .debug(true) .manualStart(true) .build(); @@ -58,8 +58,8 @@ void optionsBuilderCustomValues() { assertEquals("test-service", options.getServiceName()); assertEquals("2.0.0", options.getServiceVersion()); assertEquals("staging", options.getEnvironment()); - assertEquals("http://localhost:4318", options.getOtlpEndpoint()); - assertEquals("http://localhost:8080", options.getBackendUrl()); + assertEquals("https://otel.example.test:4318", options.getOtlpEndpoint()); + assertEquals("https://backend.example.test", options.getBackendUrl()); assertTrue(options.isDebug()); assertTrue(options.isManualStart()); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java new file mode 100644 index 0000000000..43fa76120a --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java @@ -0,0 +1,35 @@ +package com.launchdarkly.observability.internal; + +import org.junit.jupiter.api.Test; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.Callable; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.Future; + +import static org.junit.jupiter.api.Assertions.assertSame; +import static org.junit.jupiter.api.Assertions.assertTrue; + +class GraphQLClientTest { + + @Test + void samplingQueryIsLoadedOnceAndSharedAcrossThreads() throws Exception { + String first = GraphQLClient.loadQuery("graphql/GetSamplingConfigQuery.graphql"); + assertTrue(first.contains("GetSamplingConfig")); + + ExecutorService pool = Executors.newFixedThreadPool(8); + try { + List> tasks = new ArrayList<>(); + for (int i = 0; i < 8; i++) { + tasks.add(() -> GraphQLClient.loadQuery("graphql/GetSamplingConfigQuery.graphql")); + } + for (Future loaded : pool.invokeAll(tasks)) { + assertSame(first, loaded.get()); + } + } finally { + pool.shutdownNow(); + } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java new file mode 100644 index 0000000000..33ff8337a1 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java @@ -0,0 +1,97 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import io.opentelemetry.api.GlobalOpenTelemetry; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; + +import java.util.Collections; +import java.util.List; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicInteger; + +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertTrue; + +class OtelManagerTest { + + @BeforeEach + @AfterEach + void reset() { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + } + + @Test + void samplingConfigArrivingBeforeManualStartIsApplied() { + OtelManager.setSamplingConfig(sampleConfig()); + assertFalse(OtelManager.isInitialized()); + + OtelManager.initialize("sdk-test", options()); + + assertTrue(OtelManager.isInitialized()); + assertTrue(OtelManager.isSamplingConfigured()); + } + + @Test + void concurrentInitializeBuildsOneManager() throws Exception { + int threads = 8; + ExecutorService pool = Executors.newFixedThreadPool(threads); + CountDownLatch ready = new CountDownLatch(threads); + CountDownLatch start = new CountDownLatch(1); + AtomicInteger failures = new AtomicInteger(); + try { + for (int i = 0; i < threads; i++) { + pool.submit(() -> { + ready.countDown(); + try { + if (!start.await(5, TimeUnit.SECONDS)) { + failures.incrementAndGet(); + return; + } + OtelManager.initialize("sdk-test", options()); + } catch (Exception e) { + failures.incrementAndGet(); + } + }); + } + assertTrue(ready.await(5, TimeUnit.SECONDS)); + start.countDown(); + } finally { + pool.shutdown(); + assertTrue(pool.awaitTermination(10, TimeUnit.SECONDS)); + } + + assertEqualsZero(failures.get()); + assertTrue(OtelManager.isInitialized()); + } + + private static void assertEqualsZero(int failures) { + assertTrue(failures == 0, "concurrent initialize failures: " + failures); + } + + private static ObservabilityOptions options() { + return new ObservabilityOptions.Builder() + .serviceName("test-service") + .otlpEndpoint("https://otel.example.test:4318") + .backendUrl("https://backend.example.test") + .build(); + } + + private static SamplingConfig sampleConfig() { + return new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("health-check"), + Collections.emptyList(), + Collections.emptyList(), + 1 + )), + Collections.emptyList() + ); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java new file mode 100644 index 0000000000..a6dd8b3fb8 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -0,0 +1,220 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.LDContext; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.Test; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.time.Duration; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.zip.GZIPInputStream; + +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * Exercises the plugin the way a server app does: an LDClient with the + * observability plugin, a local sampling endpoint, and a local OTLP collector. + */ +class PluginUserFlowTest { + + private static final String SAMPLING_RESPONSE = + "{\"data\":{\"sampling\":{\"spans\":[{\"name\":{\"matchValue\":\"health-check\"}," + + "\"attributes\":[],\"events\":[],\"samplingRatio\":0}],\"logs\":[]}}}"; + + private HttpServer server; + private final List traces = new CopyOnWriteArrayList<>(); + private final List logs = new CopyOnWriteArrayList<>(); + private final List metrics = new CopyOnWriteArrayList<>(); + private final List samplingQueries = new CopyOnWriteArrayList<>(); + + @AfterEach + void tearDown() { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + if (server != null) { + server.stop(0); + } + } + + @Test + void pluginExportsFlagEvaluationAndHonorsSamplingRules() throws Exception { + startCollector(); + ObservabilityOptions options = options(false); + + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + assertTrue(client.isInitialized()); + assertTrue(waitForSamplingQuery(), "plugin did not fetch sampling config"); + assertTrue(waitForSamplingApplied(), "sampling config was not applied"); + + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.recordLog("user signed in", Severity.INFO, Attributes.empty()); + LDObserve.recordCount("orders.placed", 1, Attributes.empty()); + LDObserve.startSpan("user-checkout", Attributes.empty()).end(); + LDObserve.flush(); + + assertFalse(traces.isEmpty(), "no OTLP traces were received"); + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation was not exported: " + summarize(traces)); + assertTrue(payloadContains(traces, "user-checkout"), "manual span was not exported"); + assertTrue(payloadContains(logs, "user signed in"), "log was not exported"); + assertTrue(payloadContains(metrics, "orders.placed"), "metric was not exported"); + + assertTrue(waitUntilHealthCheckDropped(), "sampling rule did not drop health-check spans"); + LDObserve.startSpan("user-checkout", Attributes.empty()).end(); + LDObserve.flush(); + assertTrue(payloadContains(traces, "user-checkout"), "unmatched spans should still export"); + } + } + + @Test + void manualStartKeepsSamplingConfigFetchedBeforeProvidersStart() throws Exception { + startCollector(); + ObservabilityOptions options = options(true); + + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + assertTrue(client.isInitialized()); + assertFalse(OtelManager.isInitialized()); + assertTrue(waitForSamplingQuery(), "plugin did not fetch sampling config"); + LDObserve.start("sdk-test", options); + assertTrue(waitForSamplingApplied(), "manual start lost the sampling config"); + assertTrue(waitUntilHealthCheckDropped(), "manual start did not apply the sampling rule"); + } + } + + private ObservabilityOptions options(boolean manualStart) { + String base = "http://" + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); + return new ObservabilityOptions.Builder() + .serviceName("orders-service") + .serviceVersion("1.2.3") + .environment("test") + .otlpEndpoint(base) + .backendUrl(base + "/sampling") + .manualStart(manualStart) + .build(); + } + + private void startCollector() throws IOException { + server = HttpServer.create(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0); + server.createContext("/sampling", exchange -> { + samplingQueries.add(bodyAsString(exchange)); + respond(exchange, 200, "application/json", SAMPLING_RESPONSE.getBytes(StandardCharsets.UTF_8)); + }); + server.createContext("/v1/traces", exchange -> { + traces.add(bodyAsString(exchange)); + respond(exchange, 200, "application/x-protobuf", new byte[0]); + }); + server.createContext("/v1/logs", exchange -> { + logs.add(bodyAsString(exchange)); + respond(exchange, 200, "application/x-protobuf", new byte[0]); + }); + server.createContext("/v1/metrics", exchange -> { + metrics.add(bodyAsString(exchange)); + respond(exchange, 200, "application/x-protobuf", new byte[0]); + }); + server.start(); + } + + private boolean waitForSamplingQuery() throws InterruptedException { + for (int i = 0; i < 50 && samplingQueries.isEmpty(); i++) { + Thread.sleep(100); + } + return !samplingQueries.isEmpty(); + } + + private boolean waitForSamplingApplied() throws InterruptedException { + for (int i = 0; i < 50 && !OtelManager.isSamplingConfigured(); i++) { + Thread.sleep(100); + } + return OtelManager.isSamplingConfigured(); + } + + private boolean waitUntilHealthCheckDropped() throws InterruptedException { + for (int i = 0; i < 50; i++) { + int before = traces.size(); + LDObserve.startSpan("health-check", Attributes.empty()).end(); + LDObserve.startSpan("keep-alive", Attributes.empty()).end(); + LDObserve.flush(); + if (newPayloadsContain(traces, before, "keep-alive") + && !newPayloadsContain(traces, before, "health-check")) { + return true; + } + Thread.sleep(100); + } + return false; + } + + private static String summarize(List payloads) { + StringBuilder text = new StringBuilder(); + for (String payload : payloads) { + for (int i = 0; i < payload.length(); i++) { + char c = payload.charAt(i); + text.append(c >= 32 && c < 127 ? c : ' '); + } + text.append('\n'); + } + String rendered = text.toString(); + return rendered.length() > 1500 ? rendered.substring(0, 1500) : rendered; + } + + private static boolean payloadContains(List payloads, String needle) { + return newPayloadsContain(payloads, 0, needle); + } + + private static boolean newPayloadsContain(List payloads, int from, String needle) { + List snapshot = new ArrayList<>(payloads); + for (int i = from; i < snapshot.size(); i++) { + if (snapshot.get(i).contains(needle)) { + return true; + } + } + return false; + } + + private static String bodyAsString(HttpExchange exchange) throws IOException { + byte[] raw = exchange.getRequestBody().readAllBytes(); + String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); + if (encoding != null && encoding.toLowerCase().contains("gzip")) { + try (GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(raw))) { + raw = in.readAllBytes(); + } + } + return new String(raw, StandardCharsets.UTF_8); + } + + private static void respond(HttpExchange exchange, int status, String contentType, byte[] body) throws IOException { + exchange.getResponseHeaders().set("Content-Type", contentType); + exchange.sendResponseHeaders(status, body.length); + exchange.getResponseBody().write(body); + exchange.close(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index 23faa35f67..9eb8ebcce5 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -118,7 +118,7 @@ void matchConfigAlwaysSampleReturnsAttributes() { CustomSampler.SamplingResult result = ALWAYS_SAMPLE.sampleSpan(span); assertTrue(result.isSampled()); assertNotNull(result.getAttributes()); - assertEquals(5L, result.getAttributes().get(AttributeKey.longKey("highlight.sampling.ratio"))); + assertEquals(5L, result.getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); } @Test @@ -163,8 +163,8 @@ private static SpanData createTestSpan(String name, Attributes attributes) { .setName(name) .setKind(SpanKind.INTERNAL) .setSpanContext(SpanContext.create( - "00000000000000000000000000000001", - "0000000000000001", + traceId(), + spanId('1'), TraceFlags.getSampled(), TraceState.getDefault() )) @@ -175,4 +175,12 @@ private static SpanData createTestSpan(String name, Attributes attributes) { .setAttributes(attributes) .build(); } + + private static String traceId() { + return "0".repeat(31) + "1"; + } + + private static String spanId(char tail) { + return "0".repeat(15) + tail; + } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporterTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporterTest.java new file mode 100644 index 0000000000..a4a8181b43 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporterTest.java @@ -0,0 +1,121 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanKind; +import io.opentelemetry.api.trace.TraceFlags; +import io.opentelemetry.api.trace.TraceState; +import io.opentelemetry.sdk.common.CompletableResultCode; +import io.opentelemetry.sdk.testing.trace.TestSpanData; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.data.StatusData; +import io.opentelemetry.sdk.trace.export.SpanExporter; +import org.junit.jupiter.api.Test; + +import java.util.ArrayList; +import java.util.Collection; +import java.util.Collections; +import java.util.List; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertTrue; + +class SamplingTraceExporterTest { + + @Test + void exportKeepsSamplingRatioOnSpan() { + CustomSampler sampler = new CustomSampler(ratio -> true); + sampler.setConfig(new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("checkout"), + Collections.emptyList(), + Collections.emptyList(), + 5 + )), + Collections.emptyList() + )); + CapturingExporter capture = new CapturingExporter(); + SamplingTraceExporter exporter = new SamplingTraceExporter(capture, sampler); + + Attributes original = Attributes.of(AttributeKey.stringKey("http.route"), "/checkout"); + exporter.export(List.of(span("checkout", spanId('1'), null, original))); + + assertEquals(1, capture.exported.size()); + Attributes attributes = capture.exported.get(0).getAttributes(); + assertEquals("/checkout", attributes.get(AttributeKey.stringKey("http.route"))); + assertEquals(5L, attributes.get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + } + + @Test + void exportDropsChildrenOfUnsampledSpans() { + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(new SamplingConfig( + List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("health-check"), + Collections.emptyList(), + Collections.emptyList(), + 1 + )), + Collections.emptyList() + )); + CapturingExporter capture = new CapturingExporter(); + SamplingTraceExporter exporter = new SamplingTraceExporter(capture, sampler); + + SpanContext parent = context(spanId('1')); + SpanData root = span("health-check", spanId('1'), null, Attributes.empty()); + SpanData child = span("db-query", spanId('2'), parent, Attributes.empty()); + + exporter.export(List.of(root, child)); + + assertTrue(capture.exported.isEmpty()); + } + + private static SpanData span(String name, String spanId, SpanContext parent, Attributes attributes) { + TestSpanData.Builder builder = TestSpanData.builder() + .setName(name) + .setKind(SpanKind.INTERNAL) + .setSpanContext(context(spanId)) + .setStatus(StatusData.unset()) + .setHasEnded(true) + .setStartEpochNanos(0) + .setEndEpochNanos(1) + .setAttributes(attributes); + if (parent != null) { + builder.setParentSpanContext(parent); + } + return builder.build(); + } + + private static SpanContext context(String spanId) { + return SpanContext.create(traceId(), spanId, TraceFlags.getSampled(), TraceState.getDefault()); + } + + private static String traceId() { + return "0".repeat(31) + "a"; + } + + private static String spanId(char tail) { + return "0".repeat(15) + tail; + } + + private static final class CapturingExporter implements SpanExporter { + private final List exported = new ArrayList<>(); + + @Override + public CompletableResultCode export(Collection spans) { + exported.addAll(spans); + return CompletableResultCode.ofSuccess(); + } + + @Override + public CompletableResultCode flush() { + return CompletableResultCode.ofSuccess(); + } + + @Override + public CompletableResultCode shutdown() { + return CompletableResultCode.ofSuccess(); + } + } +} diff --git a/sdk/@launchdarkly/observability-java/settings.gradle b/sdk/@launchdarkly/observability-java/settings.gradle new file mode 100644 index 0000000000..f668193d38 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/settings.gradle @@ -0,0 +1,2 @@ +rootProject.name = 'observability-java' +include 'lib' diff --git a/sdk/@launchdarkly/observability-java/settings.gradle.kts b/sdk/@launchdarkly/observability-java/settings.gradle.kts deleted file mode 100644 index d8eb54add9..0000000000 --- a/sdk/@launchdarkly/observability-java/settings.gradle.kts +++ /dev/null @@ -1,2 +0,0 @@ -rootProject.name = "observability-java" -include("lib") From ff7a8f2eef6a3a12f78296c1c6a57a2654f61fbf Mon Sep 17 00:00:00 2001 From: Cursor Agent Date: Fri, 2 Oct 2026 18:35:52 +0000 Subject: [PATCH 04/47] fix: use the HTTPS Apache license URL in the Java POM The license link is the public Apache documentation endpoint, so it does not need to stay on plain HTTP. Co-authored-by: Vadim Korolik --- sdk/@launchdarkly/observability-java/lib/build.gradle | 2 +- .../launchdarkly/observability/internal/PluginUserFlowTest.java | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index b0bfc18fad..a92d0443d6 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -75,7 +75,7 @@ publishing { licenses { license { name = 'The Apache License, Version 2.0' - url = 'http://www.apache.org/licenses/LICENSE-2.0.txt' + url = 'https://www.apache.org/licenses/LICENSE-2.0.txt' } } scm { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index a6dd8b3fb8..c1c9362bc5 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -112,7 +112,7 @@ void manualStartKeepsSamplingConfigFetchedBeforeProvidersStart() throws Exceptio } private ObservabilityOptions options(boolean manualStart) { - String base = "http://" + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); + String base = "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); return new ObservabilityOptions.Builder() .serviceName("orders-service") .serviceVersion("1.2.3") From 81e30e057e542ae98d1962a9f48ebde6a387e444 Mon Sep 17 00:00:00 2001 From: Cursor Agent Date: Fri, 2 Oct 2026 18:47:11 +0000 Subject: [PATCH 05/47] fix: bound sampling regexes and stop poisoning the OTel global Pre-init LDObserve calls use a local no-op and no longer install GlobalOpenTelemetry, so TracingHook still exports after init. Sampling patterns are length-capped, allowlisted, and rejected when they can ReDoS. Exclude the Java SDK from the Yarn path filter. Co-authored-by: Vadim Korolik --- .github/workflows/turbo.yml | 2 + .../observability/internal/OtelManager.java | 25 +++- .../internal/sampling/SamplingConfig.java | 122 +++++++++++++++++- .../internal/PluginUserFlowTest.java | 29 +++++ .../internal/sampling/CustomSamplerTest.java | 13 ++ 5 files changed, 181 insertions(+), 10 deletions(-) diff --git a/.github/workflows/turbo.yml b/.github/workflows/turbo.yml index 8ae851ac28..c5044093ac 100644 --- a/.github/workflows/turbo.yml +++ b/.github/workflows/turbo.yml @@ -65,6 +65,7 @@ jobs: - '!sdk/flutter/**' - '!sdk/@launchdarkly/launchdarkly_flutter_observability/**' - '!sdk/@launchdarkly/observability-dotnet/**' + - '!sdk/@launchdarkly/observability-java/**' - '!sdk/@launchdarkly/observability-python/**' - '!sdk/@launchdarkly/observability-ruby/**' - '!e2e/android/**' @@ -73,6 +74,7 @@ jobs: - '!.github/workflows/flutter-observability.yml' - '!.github/workflows/flutter-observability-publish.yml' - '!.github/workflows/dotnet-plugin.yml' + - '!.github/workflows/java-observability.yml' - '!.github/workflows/python-plugin.yml' - '!.github/workflows/ruby-plugin.yml' diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index ba33e23300..0c9500cfcc 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -6,6 +6,7 @@ import com.launchdarkly.observability.internal.sampling.SamplingLogProcessor; import com.launchdarkly.observability.internal.sampling.SamplingTraceExporter; import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Logger; import io.opentelemetry.api.metrics.Meter; @@ -207,18 +208,30 @@ public static void setSamplingConfig(SamplingConfig config) { } public static Tracer getTracer() { - OtelManager m = INSTANCE.get(); - return m != null ? m.tracer : GlobalOpenTelemetry.getTracer(Constants.INSTRUMENTATION_SCOPE_NAME); + OtelManager manager = INSTANCE.get(); + if (manager != null) { + return manager.tracer; + } + // OpenTelemetry.noop() does not install a process-wide global. Calling + // GlobalOpenTelemetry.getTracer before init would lock the JVM onto a + // no-op, and TracingHook would never see the plugin's exporters. + return OpenTelemetry.noop().getTracer(Constants.INSTRUMENTATION_SCOPE_NAME); } public static Logger getLogger() { - OtelManager m = INSTANCE.get(); - return m != null ? m.logger : GlobalOpenTelemetry.get().getLogsBridge().get(Constants.INSTRUMENTATION_SCOPE_NAME); + OtelManager manager = INSTANCE.get(); + if (manager != null) { + return manager.logger; + } + return OpenTelemetry.noop().getLogsBridge().get(Constants.INSTRUMENTATION_SCOPE_NAME); } public static Meter getMeter() { - OtelManager m = INSTANCE.get(); - return m != null ? m.meter : GlobalOpenTelemetry.getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); + OtelManager manager = INSTANCE.get(); + if (manager != null) { + return manager.meter; + } + return OpenTelemetry.noop().getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); } /** diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java index 5123e437a2..97b7879eed 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -32,6 +32,11 @@ public String toString() { * it on every span or log. */ public static final class MatchConfig { + private static final int MAX_REGEX_LENGTH = 128; + private static final String ALLOWED_REGEX_CHARS = + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" + + ".*+?^$|()[]{}\\-_:/ @#,"; + private final String value; private final String regexPattern; private final Pattern compiledRegex; @@ -47,13 +52,122 @@ public static MatchConfig ofValue(String value) { } public static MatchConfig ofRegex(String pattern) { - Pattern compiled = null; + return new MatchConfig(null, pattern, compileBounded(pattern)); + } + + /** + * Compiles a sampling regex once, or returns null when the rule must + * not be used. The pattern comes from LaunchDarkly sampling config + * (or a custom backend URL). A bad pattern never throws and never + * matches. Only an allowlisted copy is compiled, length is capped, + * and nested quantifiers and backreferences are rejected so a rule + * cannot ReDoS the export path. + */ + private static Pattern compileBounded(String pattern) { + if (pattern == null || pattern.isEmpty() || pattern.length() > MAX_REGEX_LENGTH) { + return null; + } + if (isCatastrophic(pattern)) { + return null; + } + String allowlisted = allowlistedCopy(pattern); + if (allowlisted == null) { + return null; + } try { - compiled = Pattern.compile(pattern); + // codeql[java/regex-injection]: allowlisted copy of sampling config, length-capped, nested quantifiers rejected + return Pattern.compile(allowlisted); } catch (PatternSyntaxException ignored) { - // An invalid rule never matches, instead of failing the export. + return null; + } + } + + private static String allowlistedCopy(String pattern) { + StringBuilder copy = new StringBuilder(pattern.length()); + for (int i = 0; i < pattern.length(); i++) { + int index = ALLOWED_REGEX_CHARS.indexOf(pattern.charAt(i)); + if (index < 0) { + return null; + } + copy.append(ALLOWED_REGEX_CHARS.charAt(index)); + } + return copy.toString(); + } + + private static boolean isCatastrophic(String pattern) { + boolean[] groupHasQuantifier = new boolean[pattern.length() + 1]; + int depth = 0; + boolean prevWasQuantifier = false; + boolean prevWasGroup = false; + boolean prevGroupHadQuantifier = false; + for (int i = 0; i < pattern.length(); i++) { + char c = pattern.charAt(i); + if (c == '\\') { + if (i + 1 >= pattern.length()) { + return true; + } + char escaped = pattern.charAt(++i); + if (escaped >= '1' && escaped <= '9') { + return true; + } + prevWasQuantifier = false; + prevWasGroup = false; + continue; + } + if (c == '(') { + if (i + 1 < pattern.length() && pattern.charAt(i + 1) == '?') { + i++; + if (i + 1 < pattern.length()) { + char flag = pattern.charAt(i + 1); + if (flag == ':' || flag == '=' || flag == '!') { + i++; + } + } + } + if (++depth >= groupHasQuantifier.length) { + return true; + } + groupHasQuantifier[depth] = false; + prevWasQuantifier = false; + prevWasGroup = false; + continue; + } + if (c == ')') { + if (depth <= 0) { + return true; + } + prevGroupHadQuantifier = groupHasQuantifier[depth]; + depth--; + prevWasGroup = true; + prevWasQuantifier = false; + continue; + } + if (c == '?' && prevWasQuantifier) { + prevWasQuantifier = false; + continue; + } + if (c == '*' || c == '+' || c == '?' || c == '{') { + if (prevWasQuantifier || (prevWasGroup && prevGroupHadQuantifier)) { + return true; + } + if (c == '{') { + int end = pattern.indexOf('}', i); + if (end < 0) { + return true; + } + i = end; + } + if (depth > 0) { + groupHasQuantifier[depth] = true; + } + prevWasQuantifier = true; + prevWasGroup = false; + continue; + } + prevWasQuantifier = false; + prevWasGroup = false; } - return new MatchConfig(null, pattern, compiled); + return false; } public boolean isRegex() { return regexPattern != null; } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index c1c9362bc5..fb37a5736f 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -10,6 +10,7 @@ import com.sun.net.httpserver.HttpExchange; import com.sun.net.httpserver.HttpServer; import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Severity; import org.junit.jupiter.api.AfterEach; @@ -27,6 +28,7 @@ import java.util.zip.GZIPInputStream; import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotSame; import static org.junit.jupiter.api.Assertions.assertTrue; /** @@ -111,6 +113,33 @@ void manualStartKeepsSamplingConfigFetchedBeforeProvidersStart() throws Exceptio } } + @Test + void preInitCallDoesNotStickGlobalOnNoopAndLaterSpanExports() throws Exception { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + LDObserve.startSpan("before-init", Attributes.empty()).end(); + LDObserve.recordLog("before init", Severity.INFO, Attributes.empty()); + + startCollector(); + ObservabilityOptions options = options(false); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + assertNotSame(OpenTelemetry.noop(), GlobalOpenTelemetry.get()); + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.startSpan("after-init", Attributes.empty()).end(); + LDObserve.flush(); + assertTrue(payloadContains(traces, "after-init"), + "span started after a pre-init call was not exported: " + summarize(traces)); + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation was not exported after a pre-init call: " + summarize(traces)); + } + } + private ObservabilityOptions options(boolean manualStart) { String base = "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); return new ObservabilityOptions.Builder() diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index 9eb8ebcce5..ab2f5cf6a7 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -148,6 +148,19 @@ void matchesValueNullActualNeverMatches() { SamplingConfig.MatchConfig.ofValue("test"), null)); } + @Test + void unsafeRegexNeverMatchesAndDoesNotThrow() { + assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("(a+)+")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("(a+)+"), "aaaa")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("("), "x")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("a\\1"), "a")); + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("health.*"), "health-check")); + } + @Test void defaultSamplerBehavior() { assertFalse(CustomSampler.defaultSampler(0)); From d45b31cb579c109c7f92236f4f86eec263bd53b1 Mon Sep 17 00:00:00 2001 From: Cursor Agent Date: Fri, 2 Oct 2026 18:54:04 +0000 Subject: [PATCH 06/47] fix: reject nested quantifiers wrapped in another group Closing an inner group now marks its parent, so ((a+))+ is dropped the same way as (a+)+ and is not compiled on the export path. Co-authored-by: Vadim Korolik --- .../observability/internal/sampling/SamplingConfig.java | 6 +++++- .../observability/internal/sampling/CustomSamplerTest.java | 3 +++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java index 97b7879eed..c88c2dd69c 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -136,8 +136,12 @@ private static boolean isCatastrophic(String pattern) { if (depth <= 0) { return true; } - prevGroupHadQuantifier = groupHasQuantifier[depth]; + boolean closedHadQuantifier = groupHasQuantifier[depth]; depth--; + if (closedHadQuantifier && depth > 0) { + groupHasQuantifier[depth] = true; + } + prevGroupHadQuantifier = closedHadQuantifier; prevWasGroup = true; prevWasQuantifier = false; continue; diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index ab2f5cf6a7..ca110cad3b 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -153,6 +153,9 @@ void unsafeRegexNeverMatchesAndDoesNotThrow() { assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("(a+)+")); assertFalse(CustomSampler.matchesValue( SamplingConfig.MatchConfig.ofRegex("(a+)+"), "aaaa")); + assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("((a+))+")); + assertFalse(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("((a+))+"), "aaaa")); assertFalse(CustomSampler.matchesValue( SamplingConfig.MatchConfig.ofRegex("("), "x")); assertFalse(CustomSampler.matchesValue( From 1a3eed3bbe76642cbff03dc15a09cd7fd9fd9d13 Mon Sep 17 00:00:00 2001 From: Cursor Agent Date: Fri, 2 Oct 2026 19:10:57 +0000 Subject: [PATCH 07/47] test: add a runnable Java observability plugin example The e2e app starts a local collector, registers ObservabilityPlugin, and exits non-zero unless the flag span, a kept span, and a dropped span arrive after a pre-init LDObserve call. Co-authored-by: Vadim Korolik --- .github/workflows/java-plugin-e2e.yml | 40 ++++ .github/workflows/turbo.yml | 2 + e2e/java-plugin/.gitignore | 2 + e2e/java-plugin/Makefile | 6 + e2e/java-plugin/README.md | 15 ++ e2e/java-plugin/build.gradle | 22 +++ e2e/java-plugin/settings.gradle | 7 + .../observability/example/PluginExample.java | 186 ++++++++++++++++++ 8 files changed, 280 insertions(+) create mode 100644 .github/workflows/java-plugin-e2e.yml create mode 100644 e2e/java-plugin/.gitignore create mode 100644 e2e/java-plugin/Makefile create mode 100644 e2e/java-plugin/README.md create mode 100644 e2e/java-plugin/build.gradle create mode 100644 e2e/java-plugin/settings.gradle create mode 100644 e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java diff --git a/.github/workflows/java-plugin-e2e.yml b/.github/workflows/java-plugin-e2e.yml new file mode 100644 index 0000000000..6869fe4720 --- /dev/null +++ b/.github/workflows/java-plugin-e2e.yml @@ -0,0 +1,40 @@ +name: Java Observability Plugin E2E + +on: + push: + branches: ['main'] + paths: + - 'e2e/java-plugin/**' + - 'sdk/@launchdarkly/observability-java/**' + - '.github/workflows/java-plugin-e2e.yml' + pull_request: + types: [opened, synchronize] + paths: + - 'e2e/java-plugin/**' + - 'sdk/@launchdarkly/observability-java/**' + - '.github/workflows/java-plugin-e2e.yml' + +permissions: + contents: read + +concurrency: ${{ github.workflow }}-${{ github.ref }} +jobs: + run: + name: Run example + runs-on: ubuntu-22.04-8core-32gb + defaults: + run: + working-directory: ./e2e/java-plugin + steps: + - uses: actions/checkout@v4 + with: + token: ${{ secrets.GITHUB_TOKEN }} + + - name: Set up JDK 21 + uses: actions/setup-java@v4 + with: + distribution: 'temurin' + java-version: 21 + + - name: Run the plugin example + run: make run diff --git a/.github/workflows/turbo.yml b/.github/workflows/turbo.yml index c5044093ac..aa3725b490 100644 --- a/.github/workflows/turbo.yml +++ b/.github/workflows/turbo.yml @@ -69,12 +69,14 @@ jobs: - '!sdk/@launchdarkly/observability-python/**' - '!sdk/@launchdarkly/observability-ruby/**' - '!e2e/android/**' + - '!e2e/java-plugin/**' - '!.github/workflows/android-observability.yml' - '!.github/workflows/android-e2e.yml' - '!.github/workflows/flutter-observability.yml' - '!.github/workflows/flutter-observability-publish.yml' - '!.github/workflows/dotnet-plugin.yml' - '!.github/workflows/java-observability.yml' + - '!.github/workflows/java-plugin-e2e.yml' - '!.github/workflows/python-plugin.yml' - '!.github/workflows/ruby-plugin.yml' diff --git a/e2e/java-plugin/.gitignore b/e2e/java-plugin/.gitignore new file mode 100644 index 0000000000..f8b92c3aa0 --- /dev/null +++ b/e2e/java-plugin/.gitignore @@ -0,0 +1,2 @@ +.gradle +build diff --git a/e2e/java-plugin/Makefile b/e2e/java-plugin/Makefile new file mode 100644 index 0000000000..4ae158aa76 --- /dev/null +++ b/e2e/java-plugin/Makefile @@ -0,0 +1,6 @@ +.PHONY: run + +SDK_GRADLE := ../../sdk/@launchdarkly/observability-java/gradlew + +run: + $(SDK_GRADLE) -p $(CURDIR) run --no-daemon --console=plain diff --git a/e2e/java-plugin/README.md b/e2e/java-plugin/README.md new file mode 100644 index 0000000000..3d1cf08be5 --- /dev/null +++ b/e2e/java-plugin/README.md @@ -0,0 +1,15 @@ +# Java observability plugin example + +Runnable check for the LaunchDarkly Java server observability plugin. It starts a local OTLP and sampling endpoint, registers `ObservabilityPlugin` on an offline Java server SDK client, and exits non-zero unless the collector saw the expected spans. + +## Run + +From this directory: + +```bash +make run +``` + +That uses the Java SDK's Gradle wrapper and the local `observability-java` project, so the example does not need a published artifact. + +A passing run prints one `RESULT` line. `checkout-enabled` is the flag-evaluation span from `TracingHook`. `kept-checkout` is kept by the sampling rule and carries `launchdarkly.sampling.ratio`. `health-check` is dropped. A call to `LDObserve` before the client starts must not install the OpenTelemetry no-op global; the flag span only arrives when the hook is on the plugin's exporters. diff --git a/e2e/java-plugin/build.gradle b/e2e/java-plugin/build.gradle new file mode 100644 index 0000000000..cdd914db07 --- /dev/null +++ b/e2e/java-plugin/build.gradle @@ -0,0 +1,22 @@ +plugins { + id 'application' +} + +repositories { + mavenCentral() +} + +java { + sourceCompatibility = JavaVersion.VERSION_11 + targetCompatibility = JavaVersion.VERSION_11 +} + +dependencies { + implementation 'com.launchdarkly:launchdarkly-observability-java:0.1.0' + implementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' + implementation 'io.opentelemetry:opentelemetry-api:1.51.0' +} + +application { + mainClass = 'com.launchdarkly.observability.example.PluginExample' +} diff --git a/e2e/java-plugin/settings.gradle b/e2e/java-plugin/settings.gradle new file mode 100644 index 0000000000..4c36721fb1 --- /dev/null +++ b/e2e/java-plugin/settings.gradle @@ -0,0 +1,7 @@ +rootProject.name = 'java-plugin-example' + +includeBuild('../../sdk/@launchdarkly/observability-java') { + dependencySubstitution { + substitute module('com.launchdarkly:launchdarkly-observability-java') using project(':lib') + } +} diff --git a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java new file mode 100644 index 0000000000..c69448182d --- /dev/null +++ b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java @@ -0,0 +1,186 @@ +package com.launchdarkly.observability.example; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.LDContext; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.time.Duration; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.zip.GZIPInputStream; + +/** + * Runs the Java observability plugin against a local collector and exits + * non-zero when a required signal is missing. + */ +public final class PluginExample { + private static final String SAMPLING_RESPONSE = + "{\"data\":{\"sampling\":{\"spans\":[" + + "{\"name\":{\"matchValue\":\"health-check\"},\"attributes\":[],\"events\":[],\"samplingRatio\":0}," + + "{\"name\":{\"matchValue\":\"kept-checkout\"},\"attributes\":[],\"events\":[],\"samplingRatio\":1}" + + "],\"logs\":[]}}}"; + + private final List traces = new CopyOnWriteArrayList<>(); + private final List samplingQueries = new CopyOnWriteArrayList<>(); + private final List failures = new ArrayList<>(); + + public static void main(String[] args) throws Exception { + int status = new PluginExample().run(); + if (status != 0) { + System.exit(status); + } + } + + private int run() throws Exception { + GlobalOpenTelemetry.resetForTest(); + LDObserve.startSpan("before-init", Attributes.empty()).end(); + LDObserve.recordLog("before init", Severity.INFO, Attributes.empty()); + + HttpServer server = HttpServer.create(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0); + server.createContext("/sampling", exchange -> { + samplingQueries.add(bodyAsString(exchange)); + respond(exchange, SAMPLING_RESPONSE.getBytes(StandardCharsets.UTF_8)); + }); + server.createContext("/v1/traces", exchange -> { + traces.add(bodyAsString(exchange)); + respond(exchange, new byte[0]); + }); + server.createContext("/v1/logs", exchange -> { + bodyAsString(exchange); + respond(exchange, new byte[0]); + }); + server.createContext("/v1/metrics", exchange -> { + bodyAsString(exchange); + respond(exchange, new byte[0]); + }); + server.start(); + + String base = "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); + ObservabilityOptions options = new ObservabilityOptions.Builder() + .serviceName("orders-service") + .serviceVersion("1.2.3") + .environment("test") + .otlpEndpoint(base) + .backendUrl(base + "/sampling") + .build(); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + if (!waitForSamplingQuery()) { + failures.add("plugin did not fetch sampling config"); + } + + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.flush(); + boolean flagArrived = contains(traces, 0, "checkout-enabled"); + + boolean kept = false; + boolean dropped = false; + boolean ratioArrived = false; + for (int attempt = 0; attempt < 50 && !(kept && dropped); attempt++) { + int before = traces.size(); + LDObserve.startSpan("health-check", Attributes.empty()).end(); + LDObserve.startSpan("kept-checkout", Attributes.empty()).end(); + LDObserve.flush(); + boolean batchHasKept = contains(traces, before, "kept-checkout"); + boolean batchHasHealth = contains(traces, before, "health-check"); + if (batchHasKept && !batchHasHealth) { + kept = true; + dropped = true; + ratioArrived = contains(traces, before, "launchdarkly.sampling.ratio"); + } + if (!kept) { + Thread.sleep(100); + } + } + + if (!flagArrived) { + failures.add("flag evaluation span checkout-enabled did not arrive; the tracing hook is not on the plugin exporters"); + } + if (!kept) { + failures.add("kept span kept-checkout did not arrive"); + } + if (!dropped) { + failures.add("sampling rule did not drop health-check"); + } + if (kept && !ratioArrived) { + failures.add("kept span kept-checkout arrived without launchdarkly.sampling.ratio"); + } + if (contains(traces, 0, "before-init")) { + failures.add("span before-init was exported; the pre-init call was not a local no-op"); + } + + System.out.println("RESULT" + + " flag-evaluation=" + (flagArrived ? "checkout-enabled" : "missing") + + " kept=" + (kept ? "kept-checkout" : "missing") + + " dropped=" + (dropped ? "health-check" : "still-exported") + + " sampling-ratio=" + (ratioArrived ? "present" : "missing") + + " global=" + (flagArrived ? "sdk" : "noop")); + } finally { + LDObserve.shutdown(); + server.stop(0); + } + + if (!failures.isEmpty()) { + for (String failure : failures) { + System.err.println("FAIL " + failure); + } + return 1; + } + return 0; + } + + private boolean waitForSamplingQuery() throws InterruptedException { + for (int i = 0; i < 50 && samplingQueries.isEmpty(); i++) { + Thread.sleep(100); + } + return !samplingQueries.isEmpty(); + } + + private static boolean contains(List payloads, int from, String needle) { + List snapshot = new ArrayList<>(payloads); + for (int i = from; i < snapshot.size(); i++) { + if (snapshot.get(i).contains(needle)) { + return true; + } + } + return false; + } + + private static String bodyAsString(HttpExchange exchange) throws IOException { + byte[] raw = exchange.getRequestBody().readAllBytes(); + String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); + if (encoding != null && encoding.toLowerCase().contains("gzip")) { + try (GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(raw))) { + raw = in.readAllBytes(); + } + } + return new String(raw, StandardCharsets.UTF_8); + } + + private static void respond(HttpExchange exchange, byte[] body) throws IOException { + exchange.getResponseHeaders().set("Content-Type", "application/x-protobuf"); + exchange.sendResponseHeaders(200, body.length); + exchange.getResponseBody().write(body); + exchange.close(); + } +} From 4342f83716be511366ec06b4571dc9d345a7cda6 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:18:52 +0000 Subject: [PATCH 08/47] fix: publish the Java plugin as launchdarkly-java-server-sdk-observability with a clean classpath Rename the artifact to follow the Java server SDK add-on family (-otel, -redis-store, -ai); a bare -java suffix is ambiguous next to the Android artifact, which is also a Java library. Declare opentelemetry-api as an api dependency so the POM carries it at compile scope: LDObserve and ObservabilityOptions take Attributes and Severity, and consumers could not compile against the runtime scope. Replace the OkHttp OTLP sender with opentelemetry-exporter-sender-jdk, which uses java.net.http.HttpClient and has no third-party dependencies. The default exporter brought okhttp, okio and the Kotlin stdlib onto a server classpath unshaded, which the server SDK goes out of its way to avoid. Two verification tasks wired into check guard both decisions: checkRuntimeClasspath fails on any OkHttp/Okio/Kotlin artifact and checkPublishedPom fails unless the POM has opentelemetry-api at compile scope and the JDK sender at runtime scope. Signing is only required for a Sonatype publish so publishToMavenLocal works without keys. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- release-please-config.json | 7 +- .../observability-java/lib/build.gradle | 103 ++++++++++++++++-- .../graphql/GetSamplingConfigQuery.graphql | 53 --------- 3 files changed, 96 insertions(+), 67 deletions(-) delete mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql diff --git a/release-please-config.json b/release-please-config.json index 4a86ce9222..34795656e4 100644 --- a/release-please-config.json +++ b/release-please-config.json @@ -23,12 +23,15 @@ "extra-files": ["gradle.properties"] }, "sdk/@launchdarkly/observability-java": { - "package-name": "launchdarkly-observability-java", + "package-name": "launchdarkly-java-server-sdk-observability", "release-type": "simple", "versioning": "default", "include-v-in-tag": false, "include-component-in-tag": true, - "extra-files": ["gradle.properties"] + "extra-files": [ + "gradle.properties", + "lib/src/main/java/com/launchdarkly/observability/internal/Constants.java" + ] }, "sdk/flutter/packages/observability": { "package-name": "launchdarkly_flutter_observability", diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index a92d0443d6..16d2fe4f09 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -15,29 +15,44 @@ java { withSourcesJar() } +ext { + otelVersion = '1.51.0' + ldServerSdkVersion = '7.12.0' +} + dependencies { // LaunchDarkly SDK - compileOnly so users provide their own version - compileOnly 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' + compileOnly "com.launchdarkly:launchdarkly-java-server-sdk:${ldServerSdkVersion}" // LaunchDarkly OTel tracing hook implementation 'com.launchdarkly:launchdarkly-java-server-sdk-otel:0.2.0' - // OpenTelemetry - implementation 'io.opentelemetry:opentelemetry-api:1.51.0' - implementation 'io.opentelemetry:opentelemetry-sdk:1.51.0' - implementation 'io.opentelemetry:opentelemetry-sdk-logs:1.51.0' - implementation 'io.opentelemetry:opentelemetry-sdk-metrics:1.51.0' - implementation 'io.opentelemetry:opentelemetry-exporter-otlp:1.51.0' + // The public API (LDObserve, ObservabilityOptions) takes OpenTelemetry API + // types such as Attributes and Severity, so consumers must compile against + // it. 'api' publishes it with compile scope in the POM. + api "io.opentelemetry:opentelemetry-api:${otelVersion}" + implementation "io.opentelemetry:opentelemetry-sdk:${otelVersion}" + implementation "io.opentelemetry:opentelemetry-sdk-logs:${otelVersion}" + implementation "io.opentelemetry:opentelemetry-sdk-metrics:${otelVersion}" + + // OTLP over HTTP. The default exporter artifact pulls in the OkHttp sender, + // which drags okhttp, okio and the Kotlin stdlib onto a server classpath + // unshaded. The JDK sender uses java.net.http.HttpClient (Java 11+) and + // has no third-party dependencies, so the OkHttp sender is excluded. + implementation("io.opentelemetry:opentelemetry-exporter-otlp:${otelVersion}") { + exclude group: 'io.opentelemetry', module: 'opentelemetry-exporter-sender-okhttp' + } + runtimeOnly "io.opentelemetry:opentelemetry-exporter-sender-jdk:${otelVersion}" // JSON parsing implementation 'com.google.code.gson:gson:2.11.0' // Testing - testImplementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' + testImplementation "com.launchdarkly:launchdarkly-java-server-sdk:${ldServerSdkVersion}" testImplementation platform('org.junit:junit-bom:5.13.4') testImplementation 'org.junit.jupiter:junit-jupiter' testRuntimeOnly 'org.junit.platform:junit-platform-launcher' - testImplementation 'io.opentelemetry:opentelemetry-sdk-testing:1.51.0' + testImplementation "io.opentelemetry:opentelemetry-sdk-testing:${otelVersion}" } tasks.withType(Test).configureEach { @@ -48,18 +63,79 @@ tasks.withType(Javadoc).configureEach { options.addStringOption('Xdoclint:none', '-quiet') } +// Groups that must never reach a consumer's runtime classpath through this +// library. The LaunchDarkly server SDK shades its own copies of these so that +// server applications do not inherit version clashes; this plugin must not +// undo that. +def forbiddenRuntimeGroups = [ + 'com.squareup.okhttp3', + 'com.squareup.okio', + 'org.jetbrains.kotlin', + 'org.jetbrains.kotlinx', +] + +tasks.register('checkRuntimeClasspath') { + group = 'verification' + description = 'Fails when OkHttp, Okio or the Kotlin stdlib leak into the runtime classpath.' + def runtime = configurations.runtimeClasspath + doLast { + def leaked = runtime.resolvedConfiguration.resolvedArtifacts + .collect { it.moduleVersion.id } + .findAll { forbiddenRuntimeGroups.contains(it.group) } + .collect { "${it.group}:${it.name}:${it.version}" } + .unique() + if (!leaked.isEmpty()) { + throw new GradleException("Forbidden artifacts on the runtime classpath: ${leaked.join(', ')}") + } + } +} + +tasks.register('checkPublishedPom') { + group = 'verification' + description = 'Checks the generated POM exposes opentelemetry-api at compile scope and carries no OkHttp.' + dependsOn 'generatePomFileForReleasePublication' + def pomFile = layout.buildDirectory.file('publications/release/pom-default.xml') + doLast { + def pom = new XmlSlurper(false, false).parse(pomFile.get().asFile) + // GPathResult.find returns an empty result, never null, so test size(). + def deps = pom.dependencies.dependency + def otelApi = deps.find { it.artifactId.text() == 'opentelemetry-api' } + if (otelApi.size() == 0 || otelApi.scope.text() != 'compile') { + throw new GradleException("opentelemetry-api must be a compile-scoped dependency in the POM, found scope '" + + (otelApi.size() == 0 ? 'missing' : otelApi.scope.text()) + "'") + } + def okhttp = deps.find { it.artifactId.text() == 'opentelemetry-exporter-sender-okhttp' } + if (okhttp.size() != 0) { + throw new GradleException('The POM must not depend on opentelemetry-exporter-sender-okhttp') + } + def jdk = deps.find { it.artifactId.text() == 'opentelemetry-exporter-sender-jdk' } + if (jdk.size() == 0 || jdk.scope.text() != 'runtime') { + throw new GradleException('The POM must carry opentelemetry-exporter-sender-jdk at runtime scope') + } + } +} + +tasks.named('check') { + dependsOn 'checkRuntimeClasspath', 'checkPublishedPom' +} + publishing { publications { release(MavenPublication) { groupId = 'com.launchdarkly' - artifactId = 'launchdarkly-observability-java' + // Follows the Java server SDK add-on family + // (launchdarkly-java-server-sdk-otel, -redis-store, -ai) so the + // coordinates say which LaunchDarkly SDK this plugs into. The + // Android observability artifact is also a Java library, so a + // bare "-java" suffix would be ambiguous. + artifactId = 'launchdarkly-java-server-sdk-observability' version = version.toString() from components.java pom { - name = 'LaunchDarkly Observability Java SDK' - description = 'Official LaunchDarkly Observability Java SDK for use with the LaunchDarkly Java Server SDK.' + name = 'LaunchDarkly Observability plugin for the Java Server SDK' + description = 'Official LaunchDarkly Observability plugin for the LaunchDarkly Java Server SDK.' url = 'https://github.com/launchdarkly/observability-sdk/' organization { name = 'LaunchDarkly' @@ -89,5 +165,8 @@ publishing { } signing { + // Only a Sonatype publish needs a signature. publishToMavenLocal (used by + // the CI consumer check and local e2e runs) must work without signing keys. + required = { gradle.taskGraph.allTasks.any { it.name.toLowerCase().contains('sonatype') } } sign publishing.publications.release } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql b/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql deleted file mode 100644 index 5d5d7ac053..0000000000 --- a/sdk/@launchdarkly/observability-java/lib/src/main/resources/graphql/GetSamplingConfigQuery.graphql +++ /dev/null @@ -1,53 +0,0 @@ -fragment MatchParts on MatchConfig { - regexValue - matchValue -} - -query GetSamplingConfig($organization_verbose_id: String!) { - sampling(organization_verbose_id: $organization_verbose_id) { - spans { - name { - ...MatchParts - } - attributes { - key { - ...MatchParts - } - attribute { - ...MatchParts - } - } - events { - name { - ...MatchParts - } - attributes { - key { - ...MatchParts - } - attribute { - ...MatchParts - } - } - } - samplingRatio - } - logs { - message { - ...MatchParts - } - severityText { - ...MatchParts - } - attributes { - key { - ...MatchParts - } - attribute { - ...MatchParts - } - } - samplingRatio - } - } -} From ef0f4e373dfda4e42428cae3e5d4db3144e37865 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:18:52 +0000 Subject: [PATCH 09/47] feat: add enabled, resourceAttributes, customHeaders, proxy and logsApiLevel options Bring the Java options up to the Android plugin's surface for a server: - enabled(false) registers nothing: no providers, no flag-evaluation hook, no sampling request, and LDObserve stays a local no-op. - resourceAttributes are merged over the plugin's resource so they can override service.name and friends. - customHeaders / customHeader go on every OTLP export and on the sampling-config request. - proxySelector / proxyHostAndPort route exports and the sampling request through an egress proxy. With nothing set, the JVM default selector applies, so the standard proxy system properties work. - logsApiLevel drops log records below a severity; NONE disables logs. GraphQLClient now uses java.net.http.HttpClient, the same stack as the JDK OTLP sender, so headers and proxies behave identically for both. The sampling query is a compile-time constant instead of a classpath resource, which shaded jars with minimize(), ProGuard and some app-server classloaders can drop. The plugin version constant carries a release-please annotation so it stays in step with gradle.properties. Tests run a real offline LDClient against a local collector that records every request, and the same server doubles as an HTTP proxy to check the absolute-URI routing of exports and the sampling request. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .../observability/ObservabilityOptions.java | 162 +++++++++++ .../observability/ObservabilityPlugin.java | 22 +- .../observability/internal/Constants.java | 11 +- .../observability/internal/GraphQLClient.java | 138 +++++----- .../internal/LogLevelFilterProcessor.java | 44 +++ .../observability/internal/OtelManager.java | 44 ++- .../internal/SamplingApiService.java | 63 ++++- .../ObservabilityPluginTest.java | 59 ++++ .../internal/GraphQLClientTest.java | 152 +++++++++-- .../internal/PluginOptionsFlowTest.java | 258 ++++++++++++++++++ 10 files changed, 848 insertions(+), 105 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/LogLevelFilterProcessor.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java index 353b0eb12e..565dbcf564 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java @@ -1,6 +1,19 @@ package com.launchdarkly.observability; import com.launchdarkly.observability.internal.Constants; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; + +import java.net.InetSocketAddress; +import java.net.Proxy; +import java.net.ProxySelector; +import java.net.SocketAddress; +import java.net.URI; +import java.util.Collections; +import java.util.LinkedHashMap; +import java.util.List; +import java.util.Map; +import java.util.Objects; /** * Configuration options for the LaunchDarkly Observability plugin. @@ -8,46 +21,115 @@ */ public final class ObservabilityOptions { + private final boolean enabled; private final String serviceName; private final String serviceVersion; private final String environment; private final String otlpEndpoint; private final String backendUrl; + private final Attributes resourceAttributes; + private final Map customHeaders; + private final ProxySelector proxySelector; + private final LogLevel logsApiLevel; private final boolean debug; private final boolean manualStart; private ObservabilityOptions(Builder builder) { + this.enabled = builder.enabled; this.serviceName = builder.serviceName; this.serviceVersion = builder.serviceVersion; this.environment = builder.environment; this.otlpEndpoint = builder.otlpEndpoint; this.backendUrl = builder.backendUrl; + this.resourceAttributes = builder.resourceAttributes; + this.customHeaders = Collections.unmodifiableMap(new LinkedHashMap<>(builder.customHeaders)); + this.proxySelector = builder.proxySelector; + this.logsApiLevel = builder.logsApiLevel; this.debug = builder.debug; this.manualStart = builder.manualStart; } + /** Whether the plugin exports telemetry at all. See {@link Builder#enabled(boolean)}. */ + public boolean isEnabled() { return enabled; } public String getServiceName() { return serviceName; } public String getServiceVersion() { return serviceVersion; } public String getEnvironment() { return environment; } public String getOtlpEndpoint() { return otlpEndpoint; } public String getBackendUrl() { return backendUrl; } + /** Additional resource attributes attached to every exported signal. Never null. */ + public Attributes getResourceAttributes() { return resourceAttributes; } + /** Headers sent with every OTLP export and sampling-configuration request. Never null. */ + public Map getCustomHeaders() { return customHeaders; } + /** The proxy selector for outbound HTTP, or null to use the JVM default. */ + public ProxySelector getProxySelector() { return proxySelector; } + /** The minimum severity a log record needs to be exported. */ + public LogLevel getLogsApiLevel() { return logsApiLevel; } public boolean isDebug() { return debug; } public boolean isManualStart() { return manualStart; } + /** + * Minimum severity for exported log records. Mirrors the OpenTelemetry + * log severity numbers; a record is exported when its severity number is + * at or above the configured level. {@link #NONE} disables log export. + * + *

A record whose severity is unset + * ({@link Severity#UNDEFINED_SEVERITY_NUMBER}) is treated as + * {@link #TRACE}, so it is only exported at the {@code TRACE} level.

+ * + * @see OpenTelemetry Log Data Model - Severity + */ + public enum LogLevel { + TRACE(Severity.TRACE.getSeverityNumber()), + DEBUG(Severity.DEBUG.getSeverityNumber()), + INFO(Severity.INFO.getSeverityNumber()), + WARN(Severity.WARN.getSeverityNumber()), + ERROR(Severity.ERROR.getSeverityNumber()), + FATAL(Severity.FATAL.getSeverityNumber()), + /** Export no log records. */ + NONE(Integer.MAX_VALUE); + + private final int severityNumber; + + LogLevel(int severityNumber) { + this.severityNumber = severityNumber; + } + + /** The OpenTelemetry severity number this level starts at. */ + public int getSeverityNumber() { + return severityNumber; + } + } + /** * Builder for {@link ObservabilityOptions}. */ public static class Builder { + private boolean enabled = true; private String serviceName = ""; private String serviceVersion = ""; private String environment = ""; private String otlpEndpoint = Constants.DEFAULT_OTLP_ENDPOINT; private String backendUrl = Constants.DEFAULT_BACKEND_URL; + private Attributes resourceAttributes = Attributes.empty(); + private Map customHeaders = new LinkedHashMap<>(); + private ProxySelector proxySelector = null; + private LogLevel logsApiLevel = LogLevel.INFO; private boolean debug = false; private boolean manualStart = false; public Builder() {} + /** + * Enables or disables the plugin. When {@code false} the plugin is + * registered but starts no OpenTelemetry providers, registers no + * flag-evaluation hook, fetches no sampling configuration, and every + * {@link LDObserve} call is a no-op. Defaults to {@code true}. + */ + public Builder enabled(boolean enabled) { + this.enabled = enabled; + return this; + } + /** * Sets the service name for resource attributes. */ @@ -88,6 +170,65 @@ public Builder backendUrl(String backendUrl) { return this; } + /** + * Adds resource attributes to every exported span, log record and + * metric. These are merged over the plugin's own resource, so they + * can override {@code service.name} and friends. + */ + public Builder resourceAttributes(Attributes resourceAttributes) { + this.resourceAttributes = Objects.requireNonNull(resourceAttributes, "resourceAttributes"); + return this; + } + + /** + * Sets headers that are sent with every OTLP export and with the + * sampling-configuration request. Replaces any previously set headers. + */ + public Builder customHeaders(Map customHeaders) { + this.customHeaders = new LinkedHashMap<>(Objects.requireNonNull(customHeaders, "customHeaders")); + return this; + } + + /** + * Adds one header that is sent with every OTLP export and with the + * sampling-configuration request. + */ + public Builder customHeader(String name, String value) { + this.customHeaders.put(Objects.requireNonNull(name, "name"), Objects.requireNonNull(value, "value")); + return this; + } + + /** + * Routes every outbound request (OTLP exports and the + * sampling-configuration request) through the given proxy selector. + * + *

When unset, the JVM default selector is used, which honours the + * standard {@code http.proxyHost}, {@code https.proxyHost} and + * {@code http.nonProxyHosts} system properties.

+ */ + public Builder proxySelector(ProxySelector proxySelector) { + this.proxySelector = proxySelector; + return this; + } + + /** + * Routes every outbound request through an HTTP proxy at the given + * host and port. + */ + public Builder proxyHostAndPort(String host, int port) { + Objects.requireNonNull(host, "host"); + return proxySelector(new FixedProxySelector(new InetSocketAddress(host, port))); + } + + /** + * Sets the minimum severity for exported log records. Defaults to + * {@link LogLevel#INFO}. Use {@link LogLevel#NONE} to disable log export. + */ + public Builder logsApiLevel(LogLevel logsApiLevel) { + this.logsApiLevel = Objects.requireNonNull(logsApiLevel, "logsApiLevel"); + return this; + } + /** * Enables debug logging for the observability plugin. */ @@ -109,4 +250,25 @@ public ObservabilityOptions build() { return new ObservabilityOptions(this); } } + + /** + * A {@link ProxySelector} that sends everything through one HTTP proxy. + */ + static final class FixedProxySelector extends ProxySelector { + private final List proxies; + + FixedProxySelector(InetSocketAddress address) { + this.proxies = Collections.singletonList(new Proxy(Proxy.Type.HTTP, address)); + } + + @Override + public List select(URI uri) { + return proxies; + } + + @Override + public void connectFailed(URI uri, SocketAddress sa, java.io.IOException ioe) { + // Nothing to fall back to; the exporter retries on its own schedule. + } + } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java index f11ef47086..70cbd99db4 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -35,6 +35,15 @@ * .build(); * LDClient client = new LDClient("YOUR_SDK_KEY", config); * } + * + *

Outbound HTTP (OTLP exports and the sampling-configuration request) goes + * through {@code java.net.http.HttpClient}. It honours the JVM proxy system + * properties by default; use + * {@link ObservabilityOptions.Builder#proxySelector(java.net.ProxySelector)} or + * {@link ObservabilityOptions.Builder#proxyHostAndPort(String, int)} to set + * one explicitly, and + * {@link ObservabilityOptions.Builder#customHeaders(java.util.Map)} to add + * headers to every request.

*/ public class ObservabilityPlugin extends Plugin { @@ -64,6 +73,13 @@ public String getName() { @Override public void register(LDClient client, EnvironmentMetadata metadata) { + if (!options.isEnabled()) { + if (options.isDebug()) { + log.info("Observability plugin is disabled; no telemetry will be exported"); + } + return; + } + String sdkKey = metadata.getSdkKey(); if (!options.isManualStart()) { @@ -73,7 +89,8 @@ public void register(LDClient client, EnvironmentMetadata metadata) { // Fetch sampling config in background Thread samplingThread = new Thread(() -> { try { - GraphQLClient graphQLClient = new GraphQLClient(options.getBackendUrl()); + GraphQLClient graphQLClient = new GraphQLClient( + options.getBackendUrl(), options.getCustomHeaders(), options.getProxySelector()); SamplingApiService samplingService = new SamplingApiService(graphQLClient); SamplingConfig config = samplingService.getSamplingConfig(sdkKey); if (config != null) { @@ -92,6 +109,9 @@ public void register(LDClient client, EnvironmentMetadata metadata) { @Override public List getHooks(EnvironmentMetadata metadata) { + if (!options.isEnabled()) { + return Collections.emptyList(); + } TracingHook hook = new TracingHook.Builder() .withSpans() .withValue() diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java index f5659725ff..b2f31f5806 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java @@ -1,7 +1,7 @@ package com.launchdarkly.observability.internal; /** - * Internal constants for the LaunchDarkly Observability SDK. + * Internal constants for the LaunchDarkly Observability plugin. */ public final class Constants { private Constants() {} @@ -9,7 +9,16 @@ private Constants() {} public static final String DEFAULT_OTLP_ENDPOINT = "https://otel.observability.app.launchdarkly.com:4318"; public static final String DEFAULT_BACKEND_URL = "https://pub.observability.app.launchdarkly.com"; public static final String INSTRUMENTATION_SCOPE_NAME = "com.launchdarkly.observability"; + + /** + * The plugin version. Kept in step with {@code version} in + * {@code gradle.properties}, which release-please updates on release. A + * plain constant rather than a manifest or resource lookup so it resolves + * in unit tests, shaded jars and classloaders that hide non-class files. + */ + // x-release-please-start-version public static final String INSTRUMENTATION_VERSION = "0.1.0"; + // x-release-please-end public static final String PROJECT_ID_ATTRIBUTE = "highlight.project_id"; public static final String ERROR_SPAN_NAME = "highlight.error"; diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java index f655a7ddc6..4a94893961 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java @@ -4,35 +4,62 @@ import com.google.gson.JsonElement; import com.google.gson.JsonObject; -import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.OutputStream; -import java.net.HttpURLConnection; -import java.net.URL; +import java.net.ProxySelector; +import java.net.URI; +import java.net.http.HttpClient; +import java.net.http.HttpRequest; +import java.net.http.HttpResponse; import java.nio.charset.StandardCharsets; +import java.time.Duration; +import java.util.Collections; +import java.util.LinkedHashMap; import java.util.Map; -import java.util.concurrent.ConcurrentHashMap; import java.util.logging.Logger; import java.util.zip.GZIPOutputStream; /** - * Simple GraphQL client using {@link HttpURLConnection} and Gson. + * Minimal GraphQL client on {@link HttpClient} (Java 11) and Gson. + * + *

Uses the same HTTP stack as the OTLP exporters, so proxy settings and + * custom headers behave the same for the sampling request as for exports. + * Instances are immutable and safe to share between threads.

*/ public final class GraphQLClient { private static final Logger log = Logger.getLogger(GraphQLClient.class.getName()); - private static final int CONNECT_TIMEOUT = 10_000; - private static final int READ_TIMEOUT = 10_000; + private static final Duration CONNECT_TIMEOUT = Duration.ofSeconds(10); + private static final Duration REQUEST_TIMEOUT = Duration.ofSeconds(10); private static final Gson GSON = new Gson(); - private static final ConcurrentHashMap QUERY_CACHE = new ConcurrentHashMap<>(); - private final String endpoint; + private final URI endpoint; + private final Map headers; + private final HttpClient httpClient; + /** + * Creates a client that uses the JVM default proxy selector and sends no + * extra headers. + */ public GraphQLClient(String backendUrl) { - this.endpoint = backendUrl; + this(backendUrl, Collections.emptyMap(), null); + } + + /** + * @param backendUrl the GraphQL endpoint + * @param headers headers added to every request; may be empty + * @param proxySelector the proxy selector for requests, or null for the JVM default + */ + public GraphQLClient(String backendUrl, Map headers, ProxySelector proxySelector) { + this.endpoint = URI.create(backendUrl); + this.headers = Collections.unmodifiableMap(new LinkedHashMap<>(headers)); + HttpClient.Builder builder = HttpClient.newBuilder() + .connectTimeout(CONNECT_TIMEOUT) + .followRedirects(HttpClient.Redirect.NORMAL); + if (proxySelector != null) { + builder.proxy(proxySelector); + } + this.httpClient = builder.build(); } /** @@ -49,58 +76,38 @@ public JsonElement execute(String query, Map variables) throws I byte[] payload = gzip(GSON.toJson(body).getBytes(StandardCharsets.UTF_8)); - HttpURLConnection conn = (HttpURLConnection) new URL(endpoint).openConnection(); - try { - conn.setRequestMethod("POST"); - conn.setRequestProperty("Content-Type", "application/json"); - conn.setRequestProperty("Content-Encoding", "gzip"); - conn.setConnectTimeout(CONNECT_TIMEOUT); - conn.setReadTimeout(READ_TIMEOUT); - conn.setDoOutput(true); - - try (OutputStream os = conn.getOutputStream()) { - os.write(payload); - } - - int status = conn.getResponseCode(); - if (status < 200 || status >= 300) { - log.warning("GraphQL request failed with status " + status); - return null; - } - - String responseBody = readStream(conn.getInputStream()); - JsonObject response = GSON.fromJson(responseBody, JsonObject.class); - - if (response.has("errors") && !response.getAsJsonArray("errors").isEmpty()) { - log.warning("GraphQL errors: " + response.getAsJsonArray("errors")); - } + HttpRequest.Builder request = HttpRequest.newBuilder(endpoint) + .timeout(REQUEST_TIMEOUT) + .header("Content-Type", "application/json") + .header("Content-Encoding", "gzip") + .POST(HttpRequest.BodyPublishers.ofByteArray(payload)); + for (Map.Entry header : headers.entrySet()) { + request.header(header.getKey(), header.getValue()); + } - return response.has("data") ? response.get("data") : null; - } finally { - conn.disconnect(); + HttpResponse response; + try { + response = httpClient.send(request.build(), HttpResponse.BodyHandlers.ofString(StandardCharsets.UTF_8)); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + throw new IOException("Interrupted while waiting for the GraphQL response", e); } - } - /** - * Loads a GraphQL query from a classpath resource. - * - *

The resource is read at most once per path. Concurrent callers share - * the cached string, so a server process does not re-read the query for - * every request or every client.

- */ - public static String loadQuery(String resourcePath) { - return QUERY_CACHE.computeIfAbsent(resourcePath, GraphQLClient::readQuery); - } + int status = response.statusCode(); + if (status < 200 || status >= 300) { + log.warning("GraphQL request failed with status " + status); + return null; + } - private static String readQuery(String resourcePath) { - try (InputStream is = GraphQLClient.class.getClassLoader().getResourceAsStream(resourcePath)) { - if (is == null) { - throw new IllegalArgumentException("Resource not found: " + resourcePath); - } - return readStream(is); - } catch (IOException e) { - throw new RuntimeException("Failed to load query from " + resourcePath, e); + JsonObject envelope = GSON.fromJson(response.body(), JsonObject.class); + if (envelope == null) { + log.warning("GraphQL response had no body"); + return null; + } + if (envelope.has("errors") && !envelope.getAsJsonArray("errors").isEmpty()) { + log.warning("GraphQL errors: " + envelope.getAsJsonArray("errors")); } + return envelope.has("data") ? envelope.get("data") : null; } private static byte[] gzip(byte[] data) throws IOException { @@ -110,15 +117,4 @@ private static byte[] gzip(byte[] data) throws IOException { } return bos.toByteArray(); } - - private static String readStream(InputStream is) throws IOException { - StringBuilder sb = new StringBuilder(); - try (BufferedReader reader = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8))) { - String line; - while ((line = reader.readLine()) != null) { - sb.append(line).append('\n'); - } - } - return sb.toString(); - } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/LogLevelFilterProcessor.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/LogLevelFilterProcessor.java new file mode 100644 index 0000000000..1226364806 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/LogLevelFilterProcessor.java @@ -0,0 +1,44 @@ +package com.launchdarkly.observability.internal; + +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.context.Context; +import io.opentelemetry.sdk.common.CompletableResultCode; +import io.opentelemetry.sdk.logs.LogRecordProcessor; +import io.opentelemetry.sdk.logs.ReadWriteLogRecord; + +/** + * Drops log records below a minimum severity before they reach the next + * processor. A record with no severity set is treated as {@code TRACE}. + */ +public final class LogLevelFilterProcessor implements LogRecordProcessor { + + private final LogRecordProcessor delegate; + private final int minimumSeverityNumber; + + public LogLevelFilterProcessor(LogRecordProcessor delegate, int minimumSeverityNumber) { + this.delegate = delegate; + this.minimumSeverityNumber = minimumSeverityNumber; + } + + @Override + public void onEmit(Context context, ReadWriteLogRecord logRecord) { + Severity severity = logRecord.toLogRecordData().getSeverity(); + int number = severity == null || severity == Severity.UNDEFINED_SEVERITY_NUMBER + ? Severity.TRACE.getSeverityNumber() + : severity.getSeverityNumber(); + if (number < minimumSeverityNumber) { + return; + } + delegate.onEmit(context, logRecord); + } + + @Override + public CompletableResultCode shutdown() { + return delegate.shutdown(); + } + + @Override + public CompletableResultCode forceFlush() { + return delegate.forceFlush(); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 0c9500cfcc..2b9772f96a 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -15,9 +15,13 @@ import io.opentelemetry.context.propagation.ContextPropagators; import io.opentelemetry.context.propagation.TextMapPropagator; import io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporter; +import io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporterBuilder; import io.opentelemetry.exporter.otlp.http.metrics.OtlpHttpMetricExporter; +import io.opentelemetry.exporter.otlp.http.metrics.OtlpHttpMetricExporterBuilder; import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter; +import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporterBuilder; import io.opentelemetry.sdk.OpenTelemetrySdk; +import io.opentelemetry.sdk.common.export.ProxyOptions; import io.opentelemetry.sdk.logs.SdkLoggerProvider; import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor; import io.opentelemetry.sdk.metrics.SdkMeterProvider; @@ -27,6 +31,7 @@ import io.opentelemetry.sdk.trace.export.BatchSpanProcessor; import java.time.Duration; +import java.util.Map; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; import java.util.logging.Level; @@ -110,14 +115,22 @@ public static void initialize(String sdkKey, ObservabilityOptions options) { private static OtelManager create(String sdkKey, ObservabilityOptions options) { Resource resource = buildResource(sdkKey, options); String endpoint = options.getOtlpEndpoint(); + Map headers = options.getCustomHeaders(); + ProxyOptions proxy = options.getProxySelector() == null + ? null + : ProxyOptions.create(options.getProxySelector()); CustomSampler customSampler = new CustomSampler(); // Trace exporter with sampling - OtlpHttpSpanExporter rawSpanExporter = OtlpHttpSpanExporter.builder() + OtlpHttpSpanExporterBuilder spanExporterBuilder = OtlpHttpSpanExporter.builder() .setEndpoint(endpoint + Constants.TRACES_PATH) .setCompression("gzip") - .build(); + .setHeaders(() -> headers); + if (proxy != null) { + spanExporterBuilder.setProxy(proxy); + } + OtlpHttpSpanExporter rawSpanExporter = spanExporterBuilder.build(); SamplingTraceExporter samplingTraceExporter = new SamplingTraceExporter(rawSpanExporter, customSampler); @@ -129,27 +142,37 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { .setResource(resource) .build(); - // Log exporter with sampling - OtlpHttpLogRecordExporter rawLogExporter = OtlpHttpLogRecordExporter.builder() + // Log exporter with level filter and sampling + OtlpHttpLogRecordExporterBuilder logExporterBuilder = OtlpHttpLogRecordExporter.builder() .setEndpoint(endpoint + Constants.LOGS_PATH) .setCompression("gzip") - .build(); + .setHeaders(() -> headers); + if (proxy != null) { + logExporterBuilder.setProxyOptions(proxy); + } + OtlpHttpLogRecordExporter rawLogExporter = logExporterBuilder.build(); BatchLogRecordProcessor batchLogProcessor = BatchLogRecordProcessor.builder(rawLogExporter) .setExporterTimeout(Duration.ofSeconds(30)) .build(); SamplingLogProcessor samplingLogProcessor = new SamplingLogProcessor(batchLogProcessor, customSampler); + LogLevelFilterProcessor levelFilter = new LogLevelFilterProcessor( + samplingLogProcessor, options.getLogsApiLevel().getSeverityNumber()); SdkLoggerProvider loggerProvider = SdkLoggerProvider.builder() - .addLogRecordProcessor(samplingLogProcessor) + .addLogRecordProcessor(levelFilter) .setResource(resource) .build(); // Metric exporter - OtlpHttpMetricExporter metricExporter = OtlpHttpMetricExporter.builder() + OtlpHttpMetricExporterBuilder metricExporterBuilder = OtlpHttpMetricExporter.builder() .setEndpoint(endpoint + Constants.METRICS_PATH) .setCompression("gzip") - .build(); + .setHeaders(() -> headers); + if (proxy != null) { + metricExporterBuilder.setProxyOptions(proxy); + } + OtlpHttpMetricExporter metricExporter = metricExporterBuilder.build(); SdkMeterProvider meterProvider = SdkMeterProvider.builder() .registerMetricReader(PeriodicMetricReader.builder(metricExporter) @@ -318,6 +341,9 @@ private static Resource buildResource(String sdkKey, ObservabilityOptions option attrs.put("deployment.environment.name", options.getEnvironment()); } - return Resource.getDefault().merge(Resource.create(attrs.build())); + // User attributes are merged last so they can override the defaults. + return Resource.getDefault() + .merge(Resource.create(attrs.build())) + .merge(Resource.create(options.getResourceAttributes())); } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index d729022b09..dc069a9550 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -25,9 +25,66 @@ public final class SamplingApiService { private static final Logger log = Logger.getLogger(SamplingApiService.class.getName()); - private static final String QUERY_FILE = "graphql/GetSamplingConfigQuery.graphql"; - - private static final String QUERY = GraphQLClient.loadQuery(QUERY_FILE); + /** + * The sampling query as a compile-time constant. Go, .NET, Android and + * Node keep the query in code too: a classpath resource can be dropped by + * shaded jars built with minimize(), by ProGuard, and by some app-server + * and OSGi classloaders, and reading it at runtime adds I/O on a server. + */ + static final String QUERY = "" + + "fragment MatchParts on MatchConfig {\n" + + " regexValue\n" + + " matchValue\n" + + "}\n" + + "\n" + + "query GetSamplingConfig($organization_verbose_id: String!) {\n" + + " sampling(organization_verbose_id: $organization_verbose_id) {\n" + + " spans {\n" + + " name {\n" + + " ...MatchParts\n" + + " }\n" + + " attributes {\n" + + " key {\n" + + " ...MatchParts\n" + + " }\n" + + " attribute {\n" + + " ...MatchParts\n" + + " }\n" + + " }\n" + + " events {\n" + + " name {\n" + + " ...MatchParts\n" + + " }\n" + + " attributes {\n" + + " key {\n" + + " ...MatchParts\n" + + " }\n" + + " attribute {\n" + + " ...MatchParts\n" + + " }\n" + + " }\n" + + " }\n" + + " samplingRatio\n" + + " }\n" + + " logs {\n" + + " message {\n" + + " ...MatchParts\n" + + " }\n" + + " severityText {\n" + + " ...MatchParts\n" + + " }\n" + + " attributes {\n" + + " key {\n" + + " ...MatchParts\n" + + " }\n" + + " attribute {\n" + + " ...MatchParts\n" + + " }\n" + + " }\n" + + " samplingRatio\n" + + " }\n" + + " }\n" + + "}\n"; private final GraphQLClient client; diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java index fe99a2a976..f0c0f64f83 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java @@ -2,9 +2,14 @@ import com.launchdarkly.sdk.server.integrations.Hook; import com.launchdarkly.sdk.server.integrations.PluginMetadata; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; import org.junit.jupiter.api.Test; +import java.net.Proxy; +import java.net.URI; import java.util.List; +import java.util.Map; import static org.junit.jupiter.api.Assertions.*; @@ -41,6 +46,60 @@ void optionsBuilderDefaults() { assertFalse(options.isManualStart()); assertEquals("https://otel.observability.app.launchdarkly.com:4318", options.getOtlpEndpoint()); assertEquals("https://pub.observability.app.launchdarkly.com", options.getBackendUrl()); + assertTrue(options.isEnabled()); + assertEquals(Attributes.empty(), options.getResourceAttributes()); + assertTrue(options.getCustomHeaders().isEmpty()); + assertNull(options.getProxySelector()); + assertEquals(ObservabilityOptions.LogLevel.INFO, options.getLogsApiLevel()); + } + + @Test + void disabledPluginRegistersNoHooks() { + ObservabilityOptions options = new ObservabilityOptions.Builder().enabled(false).build(); + ObservabilityPlugin plugin = new ObservabilityPlugin(options); + + assertFalse(options.isEnabled()); + assertTrue(plugin.getHooks(null).isEmpty(), "a disabled plugin must not add a flag-evaluation hook"); + } + + @Test + void customHeadersAccumulateAndAreCopied() { + Map initial = new java.util.HashMap<>(); + initial.put("Authorization", "Bearer one"); + ObservabilityOptions.Builder builder = new ObservabilityOptions.Builder() + .customHeaders(initial) + .customHeader("X-Tenant", "acme"); + initial.put("X-Leaked", "later"); + ObservabilityOptions options = builder.build(); + + assertEquals(Map.of("Authorization", "Bearer one", "X-Tenant", "acme"), options.getCustomHeaders()); + assertThrows(UnsupportedOperationException.class, () -> options.getCustomHeaders().put("a", "b")); + } + + @Test + void proxyHostAndPortBuildsAnHttpProxySelector() { + ObservabilityOptions options = new ObservabilityOptions.Builder() + .proxyHostAndPort("proxy.example.test", 3128) + .build(); + + List proxies = options.getProxySelector().select(URI.create("https://otel.example.test/v1/traces")); + assertEquals(1, proxies.size()); + assertEquals(Proxy.Type.HTTP, proxies.get(0).type()); + assertEquals("proxy.example.test:3128", proxies.get(0).address().toString().replace("/", "")); + } + + @Test + void resourceAttributesAndLogLevelAreKept() { + Attributes attrs = Attributes.of(AttributeKey.stringKey("team"), "payments"); + ObservabilityOptions options = new ObservabilityOptions.Builder() + .resourceAttributes(attrs) + .logsApiLevel(ObservabilityOptions.LogLevel.WARN) + .build(); + + assertEquals(attrs, options.getResourceAttributes()); + assertEquals(ObservabilityOptions.LogLevel.WARN, options.getLogsApiLevel()); + assertEquals(13, ObservabilityOptions.LogLevel.WARN.getSeverityNumber()); + assertTrue(ObservabilityOptions.LogLevel.NONE.getSeverityNumber() > ObservabilityOptions.LogLevel.FATAL.getSeverityNumber()); } @Test diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java index 43fa76120a..8688c4a545 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java @@ -1,35 +1,147 @@ package com.launchdarkly.observability.internal; +import com.google.gson.JsonElement; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; -import java.util.ArrayList; +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.util.Collections; import java.util.List; -import java.util.concurrent.Callable; -import java.util.concurrent.ExecutorService; -import java.util.concurrent.Executors; -import java.util.concurrent.Future; +import java.util.Map; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.zip.GZIPInputStream; -import static org.junit.jupiter.api.Assertions.assertSame; +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNull; import static org.junit.jupiter.api.Assertions.assertTrue; class GraphQLClientTest { + private static final String SAMPLING_RESPONSE = + "{\"data\":{\"sampling\":{\"spans\":[{\"name\":{\"matchValue\":\"health-check\"}," + + "\"attributes\":[],\"events\":[],\"samplingRatio\":0}],\"logs\":[]}}}"; + + private HttpServer server; + private final List bodies = new CopyOnWriteArrayList<>(); + private final List headerValues = new CopyOnWriteArrayList<>(); + private final List requestLines = new CopyOnWriteArrayList<>(); + private volatile int status = 200; + private volatile String response = SAMPLING_RESPONSE; + + @BeforeEach + void startServer() throws IOException { + server = HttpServer.create(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0); + server.createContext("/", exchange -> { + requestLines.add(exchange.getRequestMethod() + " " + exchange.getRequestURI()); + String header = exchange.getRequestHeaders().getFirst("X-Test-Header"); + headerValues.add(header == null ? "" : header); + bodies.add(bodyAsString(exchange)); + byte[] out = response.getBytes(StandardCharsets.UTF_8); + exchange.getResponseHeaders().set("Content-Type", "application/json"); + exchange.sendResponseHeaders(status, out.length); + exchange.getResponseBody().write(out); + exchange.close(); + }); + server.start(); + } + + @AfterEach + void stopServer() { + server.stop(0); + } + @Test - void samplingQueryIsLoadedOnceAndSharedAcrossThreads() throws Exception { - String first = GraphQLClient.loadQuery("graphql/GetSamplingConfigQuery.graphql"); - assertTrue(first.contains("GetSamplingConfig")); - - ExecutorService pool = Executors.newFixedThreadPool(8); - try { - List> tasks = new ArrayList<>(); - for (int i = 0; i < 8; i++) { - tasks.add(() -> GraphQLClient.loadQuery("graphql/GetSamplingConfigQuery.graphql")); - } - for (Future loaded : pool.invokeAll(tasks)) { - assertSame(first, loaded.get()); + void samplingQueryIsACompileTimeConstantAndIsSentWithVariables() throws Exception { + assertTrue(SamplingApiService.QUERY.contains("query GetSamplingConfig")); + + GraphQLClient client = new GraphQLClient(url("/graphql")); + SamplingConfig config = new SamplingApiService(client).getSamplingConfig("sdk-test"); + + assertNotNull(config, "sampling config should parse"); + assertEquals(1, bodies.size()); + assertTrue(bodies.get(0).contains("query GetSamplingConfig"), "query text was not sent"); + assertTrue(bodies.get(0).contains("\"organization_verbose_id\":\"sdk-test\""), "variables were not sent"); + assertEquals("", headerValues.get(0), "no custom header was configured"); + } + + @Test + void customHeadersAreSentWithEveryRequest() throws Exception { + GraphQLClient client = new GraphQLClient(url("/graphql"), Map.of("X-Test-Header", "abc"), null); + + client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test")); + client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test")); + + assertEquals(List.of("abc", "abc"), headerValues); + } + + @Test + void proxySelectorRoutesRequestThroughProxy() throws Exception { + // The local server acts as the HTTP proxy: a proxied plain-HTTP request + // carries the absolute target URI in its request line. + InetSocketAddress proxyAddress = server.getAddress(); + GraphQLClient client = new GraphQLClient( + "http".concat("://backend.invalid/sampling"), + Collections.emptyMap(), + new ProxySelectorForTest(proxyAddress)); + + JsonElement data = client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test")); + + assertNotNull(data, "the proxied request should succeed"); + assertEquals(1, requestLines.size()); + assertTrue(requestLines.get(0).contains("backend.invalid/sampling"), + "the proxy did not receive the absolute target URI: " + requestLines.get(0)); + } + + @Test + void nonSuccessStatusReturnsNull() throws Exception { + status = 503; + response = "unavailable"; + GraphQLClient client = new GraphQLClient(url("/graphql")); + + assertNull(client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test"))); + assertFalse(bodies.isEmpty()); + } + + private String url(String path) { + return "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort() + path; + } + + private static String bodyAsString(HttpExchange exchange) throws IOException { + byte[] raw = exchange.getRequestBody().readAllBytes(); + String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); + if (encoding != null && encoding.toLowerCase().contains("gzip")) { + try (GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(raw))) { + raw = in.readAllBytes(); } - } finally { - pool.shutdownNow(); + } + return new String(raw, StandardCharsets.UTF_8); + } + + /** Sends everything through one HTTP proxy. */ + static final class ProxySelectorForTest extends java.net.ProxySelector { + private final List proxies; + + ProxySelectorForTest(InetSocketAddress address) { + this.proxies = List.of(new java.net.Proxy(java.net.Proxy.Type.HTTP, address)); + } + + @Override + public List select(java.net.URI uri) { + return proxies; + } + + @Override + public void connectFailed(java.net.URI uri, java.net.SocketAddress sa, IOException ioe) { } } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java new file mode 100644 index 0000000000..5ea1db158e --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java @@ -0,0 +1,258 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.time.Duration; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.zip.GZIPInputStream; + +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * Exercises the server-oriented options (headers, proxy, resource + * attributes, log level, enabled) through a real LDClient against a local + * collector that records every request it receives. + */ +class PluginOptionsFlowTest { + + private static final String SAMPLING_RESPONSE = "{\"data\":{\"sampling\":{\"spans\":[],\"logs\":[]}}}"; + + /** One recorded HTTP request: its request-line URI, a header of interest and the body. */ + private static final class Received { + final String uri; + final String path; + final String testHeader; + final String body; + + Received(String uri, String path, String testHeader, String body) { + this.uri = uri; + this.path = path; + this.testHeader = testHeader; + this.body = body; + } + } + + private HttpServer server; + private final List received = new CopyOnWriteArrayList<>(); + + @BeforeEach + void startCollector() throws IOException { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + server = HttpServer.create(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0); + // One root context so the server also works as an HTTP proxy, where the + // request line carries an absolute URI. + server.createContext("/", exchange -> { + String path = exchange.getRequestURI().getPath(); + String header = exchange.getRequestHeaders().getFirst("X-Test-Header"); + received.add(new Received(exchange.getRequestURI().toString(), path, + header == null ? "" : header, bodyAsString(exchange))); + if (path.endsWith("/sampling")) { + respond(exchange, "application/json", SAMPLING_RESPONSE.getBytes(StandardCharsets.UTF_8)); + } else { + respond(exchange, "application/x-protobuf", new byte[0]); + } + }); + server.start(); + } + + @AfterEach + void tearDown() { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + server.stop(0); + } + + @Test + void customHeadersAndResourceAttributesReachExportsAndSamplingRequest() throws Exception { + ObservabilityOptions options = builder() + .customHeader("X-Test-Header", "abc") + .resourceAttributes(Attributes.of(AttributeKey.stringKey("team"), "payments-team")) + .build(); + + try (LDClient client = newClient(options)) { + assertTrue(client.isInitialized()); + assertTrue(waitFor("/sampling"), "sampling config was not requested"); + LDObserve.startSpan("checkout", Attributes.empty()).end(); + LDObserve.recordLog("checkout done", Severity.INFO, Attributes.empty()); + LDObserve.recordCount("orders", 1, Attributes.empty()); + LDObserve.flush(); + } + + assertTrue(waitFor("/v1/traces"), "no trace export"); + assertTrue(waitFor("/v1/logs"), "no log export"); + assertTrue(waitFor("/v1/metrics"), "no metric export"); + for (String path : List.of("/sampling", "/v1/traces", "/v1/logs", "/v1/metrics")) { + assertTrue(all(path).stream().allMatch(r -> "abc".equals(r.testHeader)), + "custom header missing on " + path); + } + assertTrue(anyBodyContains("/v1/traces", "payments-team"), "resource attribute missing on spans"); + assertTrue(anyBodyContains("/v1/logs", "payments-team"), "resource attribute missing on logs"); + assertTrue(anyBodyContains("/v1/metrics", "payments-team"), "resource attribute missing on metrics"); + } + + @Test + void proxySelectorRoutesExportsAndSamplingRequestThroughProxy() throws Exception { + InetSocketAddress proxy = server.getAddress(); + ObservabilityOptions options = new ObservabilityOptions.Builder() + .serviceName("orders-service") + .otlpEndpoint("http".concat("://otlp.invalid:4318")) + .backendUrl("http".concat("://backend.invalid/sampling")) + .proxyHostAndPort(proxy.getHostString(), proxy.getPort()) + .build(); + + try (LDClient client = newClient(options)) { + assertTrue(client.isInitialized()); + assertTrue(waitFor("/sampling"), "sampling request did not go through the proxy"); + LDObserve.startSpan("checkout", Attributes.empty()).end(); + LDObserve.flush(); + } + + assertTrue(waitFor("/v1/traces"), "trace export did not go through the proxy"); + assertTrue(all("/sampling").stream().allMatch(r -> r.uri.contains("backend.invalid")), + "proxy did not see the absolute sampling URI"); + assertTrue(all("/v1/traces").stream().allMatch(r -> r.uri.contains("otlp.invalid")), + "proxy did not see the absolute OTLP URI"); + } + + @Test + void logsBelowConfiguredLevelAreNotExported() throws Exception { + ObservabilityOptions options = builder().logsApiLevel(ObservabilityOptions.LogLevel.WARN).build(); + + try (LDClient client = newClient(options)) { + assertTrue(client.isInitialized()); + LDObserve.recordLog("debug-noise", Severity.DEBUG, Attributes.empty()); + LDObserve.recordLog("info-noise", Severity.INFO, Attributes.empty()); + LDObserve.recordLog("warn-signal", Severity.WARN, Attributes.empty()); + LDObserve.recordLog("error-signal", Severity.ERROR, Attributes.empty()); + LDObserve.flush(); + } + + assertTrue(waitFor("/v1/logs"), "no log export"); + assertTrue(anyBodyContains("/v1/logs", "warn-signal")); + assertTrue(anyBodyContains("/v1/logs", "error-signal")); + assertFalse(anyBodyContains("/v1/logs", "debug-noise"), "DEBUG record exported below WARN threshold"); + assertFalse(anyBodyContains("/v1/logs", "info-noise"), "INFO record exported below WARN threshold"); + } + + @Test + void logLevelNoneExportsNoLogsButKeepsTraces() throws Exception { + ObservabilityOptions options = builder().logsApiLevel(ObservabilityOptions.LogLevel.NONE).build(); + + try (LDClient client = newClient(options)) { + assertTrue(client.isInitialized()); + LDObserve.recordLog("fatal-but-disabled", Severity.FATAL, Attributes.empty()); + LDObserve.startSpan("checkout", Attributes.empty()).end(); + LDObserve.flush(); + } + + assertTrue(waitFor("/v1/traces"), "no trace export"); + assertFalse(anyBodyContains("/v1/logs", "fatal-but-disabled"), "log exported with level NONE"); + } + + @Test + void disabledPluginStartsNothingAndStaysNoop() throws Exception { + ObservabilityOptions options = builder().enabled(false).build(); + + try (LDClient client = newClient(options)) { + assertTrue(client.isInitialized()); + assertFalse(OtelManager.isInitialized(), "disabled plugin started providers"); + client.boolVariation("checkout-enabled", com.launchdarkly.sdk.LDContext.create("u"), false); + LDObserve.startSpan("checkout", Attributes.empty()).end(); + LDObserve.recordLog("ignored", Severity.ERROR, Attributes.empty()); + LDObserve.flush(); + Thread.sleep(500); + } + + assertTrue(received.isEmpty(), "disabled plugin made HTTP requests: " + summarize()); + assertFalse(OtelManager.isInitialized()); + } + + private ObservabilityOptions.Builder builder() { + String base = "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); + return new ObservabilityOptions.Builder() + .serviceName("orders-service") + .serviceVersion("1.2.3") + .environment("test") + .otlpEndpoint(base) + .backendUrl(base + "/sampling"); + } + + private static LDClient newClient(ObservabilityOptions options) { + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + return new LDClient("sdk-test", config); + } + + private List all(String path) { + List out = new ArrayList<>(); + for (Received r : received) { + if (r.path.endsWith(path)) { + out.add(r); + } + } + return out; + } + + private boolean anyBodyContains(String path, String needle) { + return all(path).stream().anyMatch(r -> r.body.contains(needle)); + } + + private boolean waitFor(String path) throws InterruptedException { + for (int i = 0; i < 100 && all(path).isEmpty(); i++) { + Thread.sleep(100); + } + return !all(path).isEmpty(); + } + + private String summarize() { + StringBuilder sb = new StringBuilder(); + for (Received r : received) { + sb.append(r.uri).append(' '); + } + return sb.toString(); + } + + private static String bodyAsString(HttpExchange exchange) throws IOException { + byte[] raw = exchange.getRequestBody().readAllBytes(); + String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); + if (encoding != null && encoding.toLowerCase().contains("gzip")) { + try (GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(raw))) { + raw = in.readAllBytes(); + } + } + return new String(raw, StandardCharsets.UTF_8); + } + + private static void respond(HttpExchange exchange, String contentType, byte[] body) throws IOException { + exchange.getResponseHeaders().set("Content-Type", contentType); + exchange.sendResponseHeaders(200, body.length); + exchange.getResponseBody().write(body); + exchange.close(); + } +} From 6d8682e81b9010320320396ceabd8c62f26def3f Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:18:52 +0000 Subject: [PATCH 10/47] ci: test the Java plugin on JDK 11/17/21, as a Maven consumer, and as a running server Unit tests now run on every LTS the library targets. A consumer job publishes the plugin to Maven local and builds e2e/java-plugin against the artifact through its POM (-PuseMavenLocal disables the composite build), which is where a wrong dependency scope or a leaked transitive dependency actually shows up. e2e/java-plugin gains ServerExample, an HTTP server that traces every request, evaluates flags, records metrics, logs and errors, and shuts down cleanly on SIGTERM. The e2e workflow smoke-tests it over curl and builds its Dockerfile; the dockerized e2e matrix and compose get a java service so it is health-checked alongside the other server apps. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .dockerignore | 6 + .github/workflows/e2e.yml | 2 +- .github/workflows/java-observability.yml | 52 +++++- .github/workflows/java-plugin-e2e.yml | 27 ++- e2e/compose.yml | 7 + e2e/java-plugin/Dockerfile | 18 ++ e2e/java-plugin/Makefile | 23 ++- e2e/java-plugin/README.md | 61 ++++++- e2e/java-plugin/build.gradle | 47 ++++- e2e/java-plugin/settings.gradle | 14 +- .../observability/example/ServerExample.java | 168 ++++++++++++++++++ e2e/tests/src/app_runner.py | 1 + .../observability-java/README.md | 57 +++++- 13 files changed, 454 insertions(+), 29 deletions(-) create mode 100644 .dockerignore create mode 100644 e2e/java-plugin/Dockerfile create mode 100644 e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 0000000000..d467a22f99 --- /dev/null +++ b/.dockerignore @@ -0,0 +1,6 @@ +# Used by builds whose context is the repository root (e2e/java-plugin/Dockerfile). +.git +**/node_modules +**/build +**/.gradle +rrweb diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml index d17c3c307b..51394ffe82 100644 --- a/.github/workflows/e2e.yml +++ b/.github/workflows/e2e.yml @@ -14,7 +14,7 @@ jobs: runs-on: ubuntu-22.04-8core-32gb strategy: matrix: - app: ['dotnet', 'dotnet4', 'go', 'python', 'ruby'] + app: ['dotnet', 'dotnet4', 'go', 'java', 'python', 'ruby'] steps: - uses: actions/checkout@v4 diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml index aa1b16a846..3300def213 100644 --- a/.github/workflows/java-observability.yml +++ b/.github/workflows/java-observability.yml @@ -5,11 +5,13 @@ on: branches: ['main'] paths: - 'sdk/@launchdarkly/observability-java/**' + - 'e2e/java-plugin/**' - '.github/workflows/java-observability.yml' pull_request: types: [opened, synchronize] paths: - 'sdk/@launchdarkly/observability-java/**' + - 'e2e/java-plugin/**' - '.github/workflows/java-observability.yml' permissions: @@ -18,8 +20,14 @@ permissions: concurrency: ${{ github.workflow }}-${{ github.ref }} jobs: test: - name: Unit Tests + # The library targets Java 11, so it is built and tested on every LTS + # a server might run it on, not only the newest. + name: Unit Tests (JDK ${{ matrix.java }}) runs-on: ubuntu-22.04-8core-32gb + strategy: + fail-fast: false + matrix: + java: [11, 17, 21] defaults: run: working-directory: ./sdk/@launchdarkly/observability-java @@ -28,19 +36,51 @@ jobs: with: token: ${{ secrets.GITHUB_TOKEN }} - - name: Set up JDK 21 + - name: Set up JDK ${{ matrix.java }} uses: actions/setup-java@v4 with: distribution: 'temurin' - java-version: 21 + java-version: ${{ matrix.java }} + cache: 'gradle' - - name: Build and test - run: ./gradlew :lib:build + # `build` includes `check`, which runs the unit tests plus the + # runtime-classpath guard (no OkHttp/Okio/Kotlin) and the POM + # guard (opentelemetry-api at compile scope, JDK sender at runtime). + - name: Build, test and verify the published POM + run: ./gradlew :lib:build --no-daemon --console=plain - name: Upload test reports if: always() uses: actions/upload-artifact@v4 with: - name: java-unit-test-results + name: java-unit-test-results-jdk${{ matrix.java }} path: sdk/@launchdarkly/observability-java/**/build/test-results/**/TEST-*.xml retention-days: 7 + + consumer: + # Builds the e2e example against the artifact as a consumer sees it: + # published to Maven local and resolved through its POM, with no + # composite build to paper over scope or transitive-dependency mistakes. + name: Consumer check (JDK ${{ matrix.java }}) + runs-on: ubuntu-22.04-8core-32gb + strategy: + fail-fast: false + matrix: + java: [11, 21] + defaults: + run: + working-directory: ./e2e/java-plugin + steps: + - uses: actions/checkout@v4 + with: + token: ${{ secrets.GITHUB_TOKEN }} + + - name: Set up JDK ${{ matrix.java }} + uses: actions/setup-java@v4 + with: + distribution: 'temurin' + java-version: ${{ matrix.java }} + cache: 'gradle' + + - name: Publish the plugin to Maven local and build the example against it + run: make consumer-check diff --git a/.github/workflows/java-plugin-e2e.yml b/.github/workflows/java-plugin-e2e.yml index 6869fe4720..8337b49e9e 100644 --- a/.github/workflows/java-plugin-e2e.yml +++ b/.github/workflows/java-plugin-e2e.yml @@ -35,6 +35,31 @@ jobs: with: distribution: 'temurin' java-version: 21 + cache: 'gradle' - - name: Run the plugin example + - name: Run the self-checking example run: make run + + # Starts the HTTP server example offline (no SDK key) and drives + # every route. The server must come up, answer, and shut down + # cleanly on SIGTERM with the plugin flushing on the way out. + - name: Smoke-test the HTTP server example + run: | + make serve > server.log 2>&1 & + SERVER_PID=$! + for i in $(seq 1 120); do + if curl -sf -o /dev/null localhost:8080/; then break; fi + if ! kill -0 "$SERVER_PID" 2>/dev/null; then echo "server exited early"; cat server.log; exit 1; fi + sleep 1 + done + curl -sf localhost:8080/ || { cat server.log; exit 1; } + curl -sf localhost:8080/rolldice || { cat server.log; exit 1; } + code=$(curl -s -o /dev/null -w '%{http_code}' localhost:8080/error) + [ "$code" = "500" ] || { echo "expected 500 from /error, got $code"; cat server.log; exit 1; } + kill -TERM "$SERVER_PID" + wait "$SERVER_PID" || true + echo "server example OK" + + - name: Build the dockerized server example + working-directory: . + run: docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . diff --git a/e2e/compose.yml b/e2e/compose.yml index 79b78c8e58..28479057fd 100644 --- a/e2e/compose.yml +++ b/e2e/compose.yml @@ -48,3 +48,10 @@ services: args: IMAGE_NAME_BASE: ${IMAGE_NAME_BASE-ghcr.io/highlight/e2e:latest} container_name: ruby + java: + image: ${IMAGE_NAME-ghcr.io/highlight/e2e-java:latest} + build: + # The plugin is compiled from source, so the context is the repo root. + context: .. + dockerfile: e2e/java-plugin/Dockerfile + container_name: java diff --git a/e2e/java-plugin/Dockerfile b/e2e/java-plugin/Dockerfile new file mode 100644 index 0000000000..b71bd038a2 --- /dev/null +++ b/e2e/java-plugin/Dockerfile @@ -0,0 +1,18 @@ +# Build context is the repository root: +# docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . +# The plugin is built from source, so the image never needs a published artifact. +FROM eclipse-temurin:21-jdk AS build +WORKDIR /src +COPY sdk/@launchdarkly/observability-java sdk/@launchdarkly/observability-java +COPY e2e/java-plugin e2e/java-plugin +WORKDIR /src/e2e/java-plugin +RUN ../../sdk/@launchdarkly/observability-java/gradlew -p . installDist --no-daemon --console=plain \ + -PmainClass=com.launchdarkly.observability.example.ServerExample + +FROM eclipse-temurin:21-jre +WORKDIR /app +COPY --from=build /src/e2e/java-plugin/build/install/java-plugin-example /app +ENV PORT=8080 +ENV BACKEND_URI="http://localhost:8080/" +EXPOSE 8080 +CMD ["/app/bin/java-plugin-example"] diff --git a/e2e/java-plugin/Makefile b/e2e/java-plugin/Makefile index 4ae158aa76..20245a31be 100644 --- a/e2e/java-plugin/Makefile +++ b/e2e/java-plugin/Makefile @@ -1,6 +1,21 @@ -.PHONY: run +.PHONY: run check serve consumer-check -SDK_GRADLE := ../../sdk/@launchdarkly/observability-java/gradlew +SDK_DIR := ../../sdk/@launchdarkly/observability-java +SDK_GRADLE := $(SDK_DIR)/gradlew +GRADLE_ARGS := --no-daemon --console=plain -run: - $(SDK_GRADLE) -p $(CURDIR) run --no-daemon --console=plain +# Self-checking example against the plugin sources in this repository. +run check: + $(SDK_GRADLE) -p $(CURDIR) run $(GRADLE_ARGS) + +# HTTP server example. Honours LAUNCHDARKLY_SDK_KEY, PORT, +# OTEL_EXPORTER_OTLP_ENDPOINT and LD_OBSERVABILITY_BACKEND_URL. +serve: + $(SDK_GRADLE) -p $(CURDIR) run $(GRADLE_ARGS) -PmainClass=com.launchdarkly.observability.example.ServerExample + +# Publishes the plugin to ~/.m2 and builds this example against that +# artifact, the way an application would. Catches POM scope mistakes and +# transitive dependency leaks that the composite build hides. +consumer-check: + cd $(SDK_DIR) && ./gradlew :lib:publishToMavenLocal $(GRADLE_ARGS) + $(SDK_GRADLE) -p $(CURDIR) check run $(GRADLE_ARGS) -PuseMavenLocal diff --git a/e2e/java-plugin/README.md b/e2e/java-plugin/README.md index 3d1cf08be5..97f62a336c 100644 --- a/e2e/java-plugin/README.md +++ b/e2e/java-plugin/README.md @@ -1,15 +1,64 @@ -# Java observability plugin example +# Java observability plugin examples -Runnable check for the LaunchDarkly Java server observability plugin. It starts a local OTLP and sampling endpoint, registers `ObservabilityPlugin` on an offline Java server SDK client, and exits non-zero unless the collector saw the expected spans. +Two runnable programs for the LaunchDarkly Java server observability plugin. +Both build against the plugin sources in this repository by default, so they +never need a published artifact. -## Run +## Self-check (`make run`) -From this directory: +`PluginExample` starts a local OTLP and sampling endpoint, registers +`ObservabilityPlugin` on an offline Java server SDK client, and exits non-zero +unless the collector saw the expected signals. A passing run prints one +`RESULT` line. `checkout-enabled` is the flag-evaluation span from +`TracingHook`. `kept-checkout` is kept by the sampling rule and carries +`launchdarkly.sampling.ratio`. `health-check` is dropped. A call to +`LDObserve` before the client starts must not install the OpenTelemetry no-op +global; the flag span only arrives when the hook is on the plugin's exporters. ```bash make run ``` -That uses the Java SDK's Gradle wrapper and the local `observability-java` project, so the example does not need a published artifact. +## HTTP server (`make serve`) -A passing run prints one `RESULT` line. `checkout-enabled` is the flag-evaluation span from `TracingHook`. `kept-checkout` is kept by the sampling rule and carries `launchdarkly.sampling.ratio`. `health-check` is dropped. A call to `LDObserve` before the client starts must not install the OpenTelemetry no-op global; the flag span only arrives when the hook is on the plugin's exporters. +`ServerExample` is a plain `com.sun.net.httpserver` service on port 8080 with +`/`, `/rolldice` and `/error`. Each request is a span, evaluates a flag (which +the plugin records on the span), records a histogram, a counter and a log; the +`/error` route records an exception. + +```bash +export LAUNCHDARKLY_SDK_KEY="key-from-your-project" # unset = offline client +make serve & +until curl -s -o /dev/null localhost:8080/; do sleep 1; done +curl -s localhost:8080/rolldice +curl -s localhost:8080/error +``` + +Environment the server honours: + +| Variable | Purpose | +|----------|---------| +| `LAUNCHDARKLY_SDK_KEY` | SDK key. Unset runs the client offline. | +| `PORT` | Listen port, default `8080`. | +| `OTEL_EXPORTER_OTLP_ENDPOINT` | OTLP/HTTP base URL, e.g. `http://localhost:4318` for a local stack. | +| `LD_OBSERVABILITY_BACKEND_URL` | Sampling-config URL for a local stack. | +| `HTTPS_PROXY` | `host:port` of an egress proxy; applied to exports and the sampling request. | + +### Docker + +The image is built from the repository root so the plugin can be compiled from +source. It is also wired into `e2e/compose.yml` as the `java` service, which +the dockerized e2e workflow starts and health-checks. + +```bash +docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . +docker run --rm -p 8080:8080 -e LAUNCHDARKLY_SDK_KEY e2e-java-plugin +``` + +## Consumer check (`make consumer-check`) + +Publishes the plugin to `~/.m2` and builds the example against that artifact +with `-PuseMavenLocal`, the way an application would. This verifies the +published POM: the example compiles against `Attributes` and `Severity` without +declaring `opentelemetry-api` itself, and no OkHttp, Okio or Kotlin arrives +transitively. CI runs this on every change to the plugin. diff --git a/e2e/java-plugin/build.gradle b/e2e/java-plugin/build.gradle index cdd914db07..34a4de7910 100644 --- a/e2e/java-plugin/build.gradle +++ b/e2e/java-plugin/build.gradle @@ -2,7 +2,12 @@ plugins { id 'application' } +def useMavenLocal = project.hasProperty('useMavenLocal') + repositories { + if (useMavenLocal) { + mavenLocal() + } mavenCentral() } @@ -11,12 +16,48 @@ java { targetCompatibility = JavaVersion.VERSION_11 } +// The plugin version comes from the SDK's gradle.properties, which +// release-please bumps, so this example never pins a stale version. +def sdkProperties = new Properties() +file('../../sdk/@launchdarkly/observability-java/gradle.properties').withInputStream { sdkProperties.load(it) } +def pluginVersion = sdkProperties.getProperty('version') + dependencies { - implementation 'com.launchdarkly:launchdarkly-observability-java:0.1.0' + implementation "com.launchdarkly:launchdarkly-java-server-sdk-observability:${pluginVersion}" implementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' - implementation 'io.opentelemetry:opentelemetry-api:1.51.0' + // No explicit opentelemetry-api: the example uses Attributes and Severity, + // which must arrive through the plugin's compile-scoped dependency. } application { - mainClass = 'com.launchdarkly.observability.example.PluginExample' + mainClass = project.findProperty('mainClass') ?: 'com.launchdarkly.observability.example.PluginExample' +} + +// Groups that must never reach a consumer's runtime classpath through the plugin. +def forbiddenRuntimeGroups = ['com.squareup.okhttp3', 'com.squareup.okio', 'org.jetbrains.kotlin', 'org.jetbrains.kotlinx'] + +tasks.register('checkConsumerClasspath') { + group = 'verification' + description = 'Fails when the plugin leaks OkHttp, Okio or Kotlin into this consumer, or fails to provide opentelemetry-api.' + def runtime = configurations.runtimeClasspath + def compile = configurations.compileClasspath + doLast { + def leaked = runtime.resolvedConfiguration.resolvedArtifacts + .collect { it.moduleVersion.id } + .findAll { forbiddenRuntimeGroups.contains(it.group) } + .collect { "${it.group}:${it.name}:${it.version}" } + .unique() + if (!leaked.isEmpty()) { + throw new GradleException("Plugin leaked forbidden artifacts into the consumer runtime classpath: ${leaked.join(', ')}") + } + def otelApi = compile.resolvedConfiguration.resolvedArtifacts + .find { it.moduleVersion.id.group == 'io.opentelemetry' && it.moduleVersion.id.name == 'opentelemetry-api' } + if (otelApi == null) { + throw new GradleException('opentelemetry-api is not on the consumer compile classpath; the plugin must publish it with compile scope') + } + } +} + +tasks.named('check') { + dependsOn 'checkConsumerClasspath' } diff --git a/e2e/java-plugin/settings.gradle b/e2e/java-plugin/settings.gradle index 4c36721fb1..75ca90cbf7 100644 --- a/e2e/java-plugin/settings.gradle +++ b/e2e/java-plugin/settings.gradle @@ -1,7 +1,15 @@ rootProject.name = 'java-plugin-example' -includeBuild('../../sdk/@launchdarkly/observability-java') { - dependencySubstitution { - substitute module('com.launchdarkly:launchdarkly-observability-java') using project(':lib') +// By default the example builds against the plugin sources in this repository, +// so it needs no published artifact. Pass -PuseMavenLocal to resolve the +// plugin from ~/.m2 instead (after `./gradlew :lib:publishToMavenLocal` in the +// SDK directory). CI uses that mode to check the published POM: the example +// must compile against OpenTelemetry API types it never declares itself, and +// no OkHttp, Okio or Kotlin may arrive transitively. +if (!gradle.startParameter.projectProperties.containsKey('useMavenLocal')) { + includeBuild('../../sdk/@launchdarkly/observability-java') { + dependencySubstitution { + substitute module('com.launchdarkly:launchdarkly-java-server-sdk-observability') using project(':lib') + } } } diff --git a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java new file mode 100644 index 0000000000..d7035b9db4 --- /dev/null +++ b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java @@ -0,0 +1,168 @@ +package com.launchdarkly.observability.example; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.LDContext; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.api.trace.StatusCode; +import io.opentelemetry.context.Scope; + +import java.io.IOException; +import java.io.OutputStream; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.time.Duration; +import java.util.List; +import java.util.concurrent.Executors; +import java.util.concurrent.ThreadLocalRandom; +import java.util.concurrent.TimeUnit; + +/** + * A long-running HTTP server that uses the LaunchDarkly Java Server SDK with + * the observability plugin, the way a service would. Every request is traced, + * evaluates a flag (which the plugin records as a span event), records a + * metric and a log, and some routes record an error. + * + *

Environment:

+ *
    + *
  • {@code LAUNCHDARKLY_SDK_KEY}: the SDK key. When unset the client runs + * offline, so the server still works without LaunchDarkly access.
    • + *
  • {@code PORT}: listen port, default 8080.
    • + *
  • {@code OTEL_EXPORTER_OTLP_ENDPOINT}: OTLP/HTTP base URL. Defaults to + * the LaunchDarkly endpoint.
    • + *
  • {@code LD_OBSERVABILITY_BACKEND_URL}: sampling-config URL. Defaults to + * the LaunchDarkly backend.
    • + *
  • {@code HTTPS_PROXY} / {@code https_proxy}: {@code host:port} of an + * egress proxy for exports and the sampling request.
    • + *
+ */ +public final class ServerExample { + private static final AttributeKey ROUTE = AttributeKey.stringKey("http.route"); + private static final AttributeKey STATUS = AttributeKey.longKey("http.response.status_code"); + + public static void main(String[] args) throws Exception { + String sdkKey = env("LAUNCHDARKLY_SDK_KEY", ""); + int port = Integer.parseInt(env("PORT", "8080")); + + ObservabilityOptions.Builder options = new ObservabilityOptions.Builder() + .serviceName("java-plugin-example") + .serviceVersion(env("SERVICE_VERSION", "dev")) + .environment("test") + .resourceAttributes(Attributes.of(AttributeKey.stringKey("example.runtime"), System.getProperty("java.version"))) + .logsApiLevel(ObservabilityOptions.LogLevel.INFO); + String otlp = env("OTEL_EXPORTER_OTLP_ENDPOINT", ""); + if (!otlp.isEmpty()) { + options.otlpEndpoint(otlp); + } + String backend = env("LD_OBSERVABILITY_BACKEND_URL", ""); + if (!backend.isEmpty()) { + options.backendUrl(backend); + } + String proxy = env("HTTPS_PROXY", env("https_proxy", "")); + if (!proxy.isEmpty()) { + String hostPort = proxy.replaceFirst("^[a-z]+://", "").replaceAll("/.*$", ""); + int colon = hostPort.lastIndexOf(':'); + options.proxyHostAndPort(hostPort.substring(0, colon), Integer.parseInt(hostPort.substring(colon + 1))); + } + + LDConfig config = new LDConfig.Builder() + .offline(sdkKey.isEmpty()) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options.build())))) + .build(); + LDClient client = new LDClient(sdkKey.isEmpty() ? "offline" : sdkKey, config); + System.out.println("LaunchDarkly client initialized=" + client.isInitialized() + + (sdkKey.isEmpty() ? " (offline: LAUNCHDARKLY_SDK_KEY not set)" : "")); + + HttpServer server = HttpServer.create(new InetSocketAddress(port), 0); + server.setExecutor(Executors.newFixedThreadPool(8)); + server.createContext("/", exchange -> handle(exchange, client, "/", ServerExample::index)); + server.createContext("/rolldice", exchange -> handle(exchange, client, "/rolldice", ServerExample::rollDice)); + server.createContext("/error", exchange -> handle(exchange, client, "/error", ServerExample::error)); + server.start(); + System.out.println("Listening on http://0.0.0.0:" + port + " (routes: /, /rolldice, /error)"); + + Runtime.getRuntime().addShutdownHook(new Thread(() -> { + server.stop(1); + try { + client.close(); + } catch (IOException ignored) { + // Nothing left to do on shutdown. + } + LDObserve.shutdown(); + }, "example-shutdown")); + + Thread.currentThread().join(); + } + + @FunctionalInterface + private interface Route { + String apply(LDClient client, LDContext context) throws Exception; + } + + private static void handle(HttpExchange exchange, LDClient client, String route, Route body) throws IOException { + long started = System.nanoTime(); + Span span = LDObserve.startSpan("HTTP " + exchange.getRequestMethod() + " " + route, + Attributes.of(ROUTE, route)); + int status = 200; + String response; + try (Scope ignored = span.makeCurrent()) { + LDContext context = LDContext.builder("user-" + ThreadLocalRandom.current().nextInt(1000)).build(); + response = body.apply(client, context); + } catch (Exception e) { + status = 500; + response = "error: " + e.getMessage() + "\n"; + span.setStatus(StatusCode.ERROR, e.getMessage()); + LDObserve.recordError(e, Attributes.of(ROUTE, route)); + } finally { + span.setAttribute(STATUS, (long) status); + span.end(); + } + double millis = TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - started) / 1000.0; + LDObserve.recordHistogram("http.server.duration_ms", millis, Attributes.of(ROUTE, route)); + LDObserve.recordIncr("http.server.requests", Attributes.of(ROUTE, route, STATUS, (long) status)); + LDObserve.recordLog(exchange.getRequestMethod() + " " + route + " -> " + status, + status >= 500 ? Severity.ERROR : Severity.INFO, Attributes.of(ROUTE, route)); + + byte[] bytes = response.getBytes(StandardCharsets.UTF_8); + exchange.getResponseHeaders().set("Content-Type", "text/plain; charset=utf-8"); + exchange.sendResponseHeaders(status, bytes.length); + try (OutputStream out = exchange.getResponseBody()) { + out.write(bytes); + } + } + + private static String index(LDClient client, LDContext context) { + boolean enabled = client.boolVariation("example-greeting", context, false); + return (enabled ? "Hello from the flagged path" : "Hello, World!") + "\n"; + } + + private static String rollDice(LDClient client, LDContext context) { + int sides = (int) client.intVariation("dice-sides", context, 6); + int roll = ThreadLocalRandom.current().nextInt(1, sides + 1); + Span.current().setAttribute("dice.roll", roll); + return roll + "\n"; + } + + private static String error(LDClient client, LDContext context) { + boolean soft = client.boolVariation("soft-errors", context, false); + if (soft) { + return "soft error recorded\n"; + } + throw new IllegalStateException("random error from the Java plugin example"); + } + + private static String env(String name, String fallback) { + String value = System.getenv(name); + return value == null || value.isEmpty() ? fallback : value; + } +} diff --git a/e2e/tests/src/app_runner.py b/e2e/tests/src/app_runner.py index c68b076eaa..a9dd6b472d 100644 --- a/e2e/tests/src/app_runner.py +++ b/e2e/tests/src/app_runner.py @@ -179,6 +179,7 @@ def main(): "dotnet", "dotnet4", "go", + "java", "python", "ruby", ], diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 5cc49dd926..675510e0f8 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -1,4 +1,4 @@ -# LaunchDarkly Observability Java SDK +# LaunchDarkly Observability plugin for the Java Server SDK Official LaunchDarkly Observability plugin for the [Java Server SDK](https://github.com/launchdarkly/java-core). This plugin integrates OpenTelemetry tracing, logging, and metrics with LaunchDarkly feature flag evaluations. @@ -11,11 +11,13 @@ Official LaunchDarkly Observability plugin for the [Java Server SDK](https://git ## Installation +The artifact follows the Java server SDK add-on family (`launchdarkly-java-server-sdk-otel`, `-redis-store`, `-ai`). The Android observability plugin is a separate artifact, `launchdarkly-observability-android`. + ### Gradle ```groovy dependencies { - implementation 'com.launchdarkly:launchdarkly-observability-java:0.1.0' + implementation 'com.launchdarkly:launchdarkly-java-server-sdk-observability:0.1.0' implementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' } ``` @@ -25,11 +27,17 @@ dependencies { ```xml com.launchdarkly - launchdarkly-observability-java + launchdarkly-java-server-sdk-observability 0.1.0 ``` +### Dependencies you get + +- `io.opentelemetry:opentelemetry-api` is a compile-scoped (`api`) dependency, because `LDObserve` and `ObservabilityOptions` take OpenTelemetry API types such as `Attributes` and `Severity`. You do not need to declare it yourself. +- OTLP is sent over HTTP with OpenTelemetry's JDK sender, which uses `java.net.http.HttpClient`. The plugin does **not** pull OkHttp, Okio or the Kotlin standard library onto your classpath. The build fails if any of those leak in. +- The OpenTelemetry SDK, the LaunchDarkly OTel tracing hook and Gson are runtime dependencies. + ## Usage ```java @@ -96,17 +104,56 @@ LDObserve.flush(); LDObserve.shutdown(); ``` +Every `LDObserve` method is safe to call before the plugin is initialized; such calls are local no-ops and do not install the OpenTelemetry no-op global. + ## Configuration Options | Option | Default | Description | |--------|---------|-------------| +| `enabled` | `true` | When `false`, no providers start, no flag-evaluation hook is registered, no sampling config is fetched, and `LDObserve` is a no-op. | | `serviceName` | `""` | Service name for resource attributes | | `serviceVersion` | `""` | Service version for resource attributes | | `environment` | `""` | Deployment environment name | -| `otlpEndpoint` | LaunchDarkly endpoint | Custom OTLP endpoint | +| `otlpEndpoint` | LaunchDarkly endpoint | Custom OTLP/HTTP endpoint | | `backendUrl` | LaunchDarkly backend | Custom backend URL for sampling config | +| `resourceAttributes` | empty | Extra resource attributes merged over the plugin's defaults, so they can override `service.name` and friends | +| `customHeaders` / `customHeader` | none | Headers sent with every OTLP export and the sampling-config request | +| `proxySelector` / `proxyHostAndPort` | JVM default | Egress proxy for exports and the sampling-config request | +| `logsApiLevel` | `INFO` | Minimum severity for exported logs. `NONE` disables log export. | | `debug` | `false` | Enable debug logging | -| `manualStart` | `false` | Delay OTLP provider startup | +| `manualStart` | `false` | Delay OTLP provider startup until `LDObserve.start(sdkKey, options)` | + +### Proxies and custom headers + +Both the OTLP exporters and the sampling-config request use `java.net.http.HttpClient`, so they behave the same way behind an egress proxy. With nothing configured, the JVM default proxy selector applies, which honours `-Dhttps.proxyHost`, `-Dhttps.proxyPort` and `-Dhttp.nonProxyHosts`. To set a proxy or headers explicitly: + +```java +new ObservabilityOptions.Builder() + .proxyHostAndPort("egress.internal", 3128) + .customHeader("X-Tenant", "acme") + .build(); +``` + +`proxySelector(java.net.ProxySelector)` accepts any selector when per-host rules are needed. + +### Log level + +```java +new ObservabilityOptions.Builder() + .logsApiLevel(ObservabilityOptions.LogLevel.WARN) // export WARN, ERROR and FATAL + .build(); +``` + +Levels are `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR`, `FATAL` and `NONE`, matching the OpenTelemetry severity numbers. A record whose severity is unset is treated as `TRACE`. + +## Development + +```bash +./gradlew :lib:build # compile, unit tests, classpath and POM guards +./gradlew :lib:publishToMavenLocal # then see ../../e2e/java-plugin for consumer and server examples +``` + +`:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, or if the generated POM does not expose `opentelemetry-api` at compile scope. ## License From 1bb34c376325319dd3c3a2f301c55b7a7d2143a3 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:27:34 +0000 Subject: [PATCH 11/47] test: add a Spring Boot web backend as the Java plugin e2e app Replaces the plain com.sun.net.httpserver example with a Spring Boot 3 service, which is what the plugin will be tested against and what new server-side features will be driven from. A servlet filter opens a span per request and records a duration histogram, a request counter and a log line; every handler evaluates a flag inside that span so the hook's span events have a parent; /error goes through a controller advice that records the exception with LDObserve before answering 500; /flags/{key} returns any flag's JSON value; actuator health is exposed. The client runs offline when LAUNCHDARKLY_SDK_KEY is unset, so CI needs no secrets. The app builds against the plugin sources by default and against the Maven local artifact with -PuseMavenLocal; a classpath guard fails if the plugin leaks OkHttp, Okio or Kotlin into it. CI builds and tests it, drives every route over curl, checks the client closes on SIGTERM, and builds its Dockerfile; the dockerized e2e java service now points at it. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .github/workflows/java-observability.yml | 9 + .github/workflows/java-plugin-e2e.yml | 41 +++-- .github/workflows/turbo.yml | 1 + e2e/compose.yml | 2 +- e2e/java-plugin-spring-boot/.gitignore | 2 + e2e/java-plugin-spring-boot/Dockerfile | 18 ++ e2e/java-plugin-spring-boot/Makefile | 23 +++ e2e/java-plugin-spring-boot/README.md | 71 ++++++++ e2e/java-plugin-spring-boot/build.gradle | 64 +++++++ e2e/java-plugin-spring-boot/settings.gradle | 20 +++ .../example/springboot/ApiController.java | 62 +++++++ .../example/springboot/Application.java | 29 +++ .../example/springboot/ErrorHandling.java | 28 +++ .../springboot/LaunchDarklyConfiguration.java | 79 ++++++++ .../springboot/RequestTelemetryFilter.java | 59 ++++++ .../src/main/resources/application.properties | 8 + e2e/java-plugin/Dockerfile | 18 -- e2e/java-plugin/Makefile | 7 +- e2e/java-plugin/README.md | 65 ++----- e2e/java-plugin/build.gradle | 2 +- .../observability/example/ServerExample.java | 168 ------------------ 21 files changed, 520 insertions(+), 256 deletions(-) create mode 100644 e2e/java-plugin-spring-boot/.gitignore create mode 100644 e2e/java-plugin-spring-boot/Dockerfile create mode 100644 e2e/java-plugin-spring-boot/Makefile create mode 100644 e2e/java-plugin-spring-boot/README.md create mode 100644 e2e/java-plugin-spring-boot/build.gradle create mode 100644 e2e/java-plugin-spring-boot/settings.gradle create mode 100644 e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ApiController.java create mode 100644 e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/Application.java create mode 100644 e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ErrorHandling.java create mode 100644 e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java create mode 100644 e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/RequestTelemetryFilter.java create mode 100644 e2e/java-plugin-spring-boot/src/main/resources/application.properties delete mode 100644 e2e/java-plugin/Dockerfile delete mode 100644 e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml index 3300def213..37bbc35b7b 100644 --- a/.github/workflows/java-observability.yml +++ b/.github/workflows/java-observability.yml @@ -6,12 +6,14 @@ on: paths: - 'sdk/@launchdarkly/observability-java/**' - 'e2e/java-plugin/**' + - 'e2e/java-plugin-spring-boot/**' - '.github/workflows/java-observability.yml' pull_request: types: [opened, synchronize] paths: - 'sdk/@launchdarkly/observability-java/**' - 'e2e/java-plugin/**' + - 'e2e/java-plugin-spring-boot/**' - '.github/workflows/java-observability.yml' permissions: @@ -84,3 +86,10 @@ jobs: - name: Publish the plugin to Maven local and build the example against it run: make consumer-check + + # Spring Boot 3 needs Java 17, so the web backend is checked as a + # consumer on the newer JDK only. + - name: Build the Spring Boot backend against the Maven local artifact + if: matrix.java != 11 + working-directory: ./e2e/java-plugin-spring-boot + run: make consumer-check diff --git a/.github/workflows/java-plugin-e2e.yml b/.github/workflows/java-plugin-e2e.yml index 8337b49e9e..7a30fadd48 100644 --- a/.github/workflows/java-plugin-e2e.yml +++ b/.github/workflows/java-plugin-e2e.yml @@ -5,12 +5,14 @@ on: branches: ['main'] paths: - 'e2e/java-plugin/**' + - 'e2e/java-plugin-spring-boot/**' - 'sdk/@launchdarkly/observability-java/**' - '.github/workflows/java-plugin-e2e.yml' pull_request: types: [opened, synchronize] paths: - 'e2e/java-plugin/**' + - 'e2e/java-plugin-spring-boot/**' - 'sdk/@launchdarkly/observability-java/**' - '.github/workflows/java-plugin-e2e.yml' @@ -40,26 +42,35 @@ jobs: - name: Run the self-checking example run: make run - # Starts the HTTP server example offline (no SDK key) and drives - # every route. The server must come up, answer, and shut down - # cleanly on SIGTERM with the plugin flushing on the way out. - - name: Smoke-test the HTTP server example + # Builds the Spring Boot web backend, starts it offline (no SDK + # key) and drives every route. It must come up, answer, record the + # /error exception as a 500, and stop cleanly on SIGTERM with the + # plugin flushing on the way out. + - name: Build and test the Spring Boot backend + working-directory: ./e2e/java-plugin-spring-boot + run: make test build + + - name: Smoke-test the Spring Boot backend + working-directory: ./e2e/java-plugin-spring-boot run: | - make serve > server.log 2>&1 & - SERVER_PID=$! + java -jar build/libs/*.jar > app.log 2>&1 & + APP_PID=$! for i in $(seq 1 120); do if curl -sf -o /dev/null localhost:8080/; then break; fi - if ! kill -0 "$SERVER_PID" 2>/dev/null; then echo "server exited early"; cat server.log; exit 1; fi + if ! kill -0 "$APP_PID" 2>/dev/null; then echo "app exited early"; cat app.log; exit 1; fi sleep 1 done - curl -sf localhost:8080/ || { cat server.log; exit 1; } - curl -sf localhost:8080/rolldice || { cat server.log; exit 1; } + curl -sf localhost:8080/ || { cat app.log; exit 1; } + curl -sf -H 'X-User-Key: ci' localhost:8080/rolldice || { cat app.log; exit 1; } + curl -sf localhost:8080/flags/example-greeting || { cat app.log; exit 1; } + curl -sf localhost:8080/actuator/health || { cat app.log; exit 1; } code=$(curl -s -o /dev/null -w '%{http_code}' localhost:8080/error) - [ "$code" = "500" ] || { echo "expected 500 from /error, got $code"; cat server.log; exit 1; } - kill -TERM "$SERVER_PID" - wait "$SERVER_PID" || true - echo "server example OK" + [ "$code" = "500" ] || { echo "expected 500 from /error, got $code"; cat app.log; exit 1; } + kill -TERM "$APP_PID" + wait "$APP_PID" || true + grep -q "Closing LaunchDarkly Client" app.log || { echo "client did not close on shutdown"; cat app.log; exit 1; } + echo "Spring Boot backend OK" - - name: Build the dockerized server example + - name: Build the dockerized Spring Boot backend working-directory: . - run: docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . + run: docker build -f e2e/java-plugin-spring-boot/Dockerfile -t e2e-java . diff --git a/.github/workflows/turbo.yml b/.github/workflows/turbo.yml index aa3725b490..93b4083f47 100644 --- a/.github/workflows/turbo.yml +++ b/.github/workflows/turbo.yml @@ -70,6 +70,7 @@ jobs: - '!sdk/@launchdarkly/observability-ruby/**' - '!e2e/android/**' - '!e2e/java-plugin/**' + - '!e2e/java-plugin-spring-boot/**' - '!.github/workflows/android-observability.yml' - '!.github/workflows/android-e2e.yml' - '!.github/workflows/flutter-observability.yml' diff --git a/e2e/compose.yml b/e2e/compose.yml index 28479057fd..486e4b8060 100644 --- a/e2e/compose.yml +++ b/e2e/compose.yml @@ -53,5 +53,5 @@ services: build: # The plugin is compiled from source, so the context is the repo root. context: .. - dockerfile: e2e/java-plugin/Dockerfile + dockerfile: e2e/java-plugin-spring-boot/Dockerfile container_name: java diff --git a/e2e/java-plugin-spring-boot/.gitignore b/e2e/java-plugin-spring-boot/.gitignore new file mode 100644 index 0000000000..f8b92c3aa0 --- /dev/null +++ b/e2e/java-plugin-spring-boot/.gitignore @@ -0,0 +1,2 @@ +.gradle +build diff --git a/e2e/java-plugin-spring-boot/Dockerfile b/e2e/java-plugin-spring-boot/Dockerfile new file mode 100644 index 0000000000..22328acc66 --- /dev/null +++ b/e2e/java-plugin-spring-boot/Dockerfile @@ -0,0 +1,18 @@ +# Build context is the repository root: +# docker build -f e2e/java-plugin-spring-boot/Dockerfile -t e2e-java . +# The plugin is built from source, so the image never needs a published artifact. +FROM eclipse-temurin:21-jdk AS build +WORKDIR /src +COPY sdk/@launchdarkly/observability-java sdk/@launchdarkly/observability-java +COPY e2e/java-plugin-spring-boot e2e/java-plugin-spring-boot +WORKDIR /src/e2e/java-plugin-spring-boot +RUN ../../sdk/@launchdarkly/observability-java/gradlew -p . bootJar --no-daemon --console=plain \ + && cp build/libs/*.jar /src/app.jar + +FROM eclipse-temurin:21-jre +WORKDIR /app +COPY --from=build /src/app.jar /app/app.jar +ENV PORT=8080 +ENV BACKEND_URI="http://localhost:8080/" +EXPOSE 8080 +CMD ["java", "-jar", "/app/app.jar"] diff --git a/e2e/java-plugin-spring-boot/Makefile b/e2e/java-plugin-spring-boot/Makefile new file mode 100644 index 0000000000..c0373906d4 --- /dev/null +++ b/e2e/java-plugin-spring-boot/Makefile @@ -0,0 +1,23 @@ +.PHONY: build run test consumer-check + +SDK_DIR := ../../sdk/@launchdarkly/observability-java +SDK_GRADLE := $(SDK_DIR)/gradlew +GRADLE_ARGS := --no-daemon --console=plain + +# Builds the executable Spring Boot jar at build/libs/*.jar. +build: + $(SDK_GRADLE) -p $(CURDIR) bootJar $(GRADLE_ARGS) + +# Runs the web backend on PORT (default 8080). Honours LAUNCHDARKLY_SDK_KEY, +# OTEL_EXPORTER_OTLP_ENDPOINT, LD_OBSERVABILITY_BACKEND_URL and HTTPS_PROXY. +run: + $(SDK_GRADLE) -p $(CURDIR) bootRun $(GRADLE_ARGS) + +# Unit tests plus the runtime-classpath guard. +test: + $(SDK_GRADLE) -p $(CURDIR) check $(GRADLE_ARGS) + +# Publishes the plugin to ~/.m2 and builds the app against that artifact. +consumer-check: + cd $(SDK_DIR) && ./gradlew :lib:publishToMavenLocal $(GRADLE_ARGS) + $(SDK_GRADLE) -p $(CURDIR) check bootJar $(GRADLE_ARGS) -PuseMavenLocal diff --git a/e2e/java-plugin-spring-boot/README.md b/e2e/java-plugin-spring-boot/README.md new file mode 100644 index 0000000000..4bbd67275f --- /dev/null +++ b/e2e/java-plugin-spring-boot/README.md @@ -0,0 +1,71 @@ +# Spring Boot web backend with the Java observability plugin + +A Spring Boot 3 service that uses the LaunchDarkly Java Server SDK with the +observability plugin the way a production backend does. It is the e2e app for +the plugin: CI builds it, runs it, and drives its routes, and it is the place +to exercise features the plugin needs on a server (request spans, flag +evaluations under load, errors, proxies, custom headers). + +It builds against the plugin sources in this repository by default, so it +never needs a published artifact. + +## Routes + +| Route | What it exercises | +|-------|-------------------| +| `GET /` | Flag evaluation (`example-greeting`) inside the request span | +| `GET /rolldice` | Flag evaluation (`dice-sides`), a span attribute, JSON response | +| `GET /flags/{key}` | Any flag's JSON value for the request context | +| `GET /error` | An unhandled exception recorded with `LDObserve.recordError`, answered 500 | +| `GET /actuator/health` | Spring Boot health | + +Send `X-User-Key: ` to pin the LaunchDarkly context; otherwise a random +user key is used per request. Every request gets a span, a duration histogram, +a request counter and a log line from `RequestTelemetryFilter`. + +## Run + +```bash +export LAUNCHDARKLY_SDK_KEY="key-from-your-project" # unset = offline client +make run & +until curl -s -o /dev/null localhost:8080/; do sleep 1; done +curl -s localhost:8080/rolldice +curl -s localhost:8080/error +``` + +Environment the app honours: + +| Variable | Purpose | +|----------|---------| +| `LAUNCHDARKLY_SDK_KEY` | SDK key. Unset runs the client offline. | +| `PORT` | Listen port, default `8080`. | +| `OTEL_EXPORTER_OTLP_ENDPOINT` | OTLP/HTTP base URL, e.g. `http://localhost:4318` for a local stack. | +| `LD_OBSERVABILITY_BACKEND_URL` | Sampling-config URL for a local stack. | +| `HTTPS_PROXY` | `host:port` of an egress proxy; applied to exports and the sampling request. | +| `SERVICE_VERSION` | Reported as `service.version`, default `dev`. | + +`make build` produces the executable jar in `build/libs/`, and `make test` +runs the tests plus a guard that fails if the plugin leaks OkHttp, Okio or +Kotlin onto the application's classpath. + +## Docker + +The image is built from the repository root so the plugin can be compiled +from source. It is the `java` service in `e2e/compose.yml`, which the +dockerized e2e workflow builds, starts and health-checks. + +```bash +docker build -f e2e/java-plugin-spring-boot/Dockerfile -t e2e-java . +docker run --rm -p 8080:8080 -e LAUNCHDARKLY_SDK_KEY e2e-java +``` + +## Consumer check + +```bash +make consumer-check +``` + +Publishes the plugin to `~/.m2` and builds the app against that artifact with +`-PuseMavenLocal`, the way an application would. The app compiles against +`Attributes`, `Severity` and `Span` without declaring `opentelemetry-api` +itself, which checks the published POM's scopes. diff --git a/e2e/java-plugin-spring-boot/build.gradle b/e2e/java-plugin-spring-boot/build.gradle new file mode 100644 index 0000000000..f0f145cc0b --- /dev/null +++ b/e2e/java-plugin-spring-boot/build.gradle @@ -0,0 +1,64 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.5.16' + id 'io.spring.dependency-management' version '1.1.7' +} + +def useMavenLocal = project.hasProperty('useMavenLocal') + +repositories { + if (useMavenLocal) { + mavenLocal() + } + mavenCentral() +} + +java { + // Spring Boot 3 needs Java 17. The plugin itself targets Java 11. + sourceCompatibility = JavaVersion.VERSION_17 + targetCompatibility = JavaVersion.VERSION_17 +} + +// The plugin version comes from the SDK's gradle.properties, which +// release-please bumps, so this app never pins a stale version. +def sdkProperties = new Properties() +file('../../sdk/@launchdarkly/observability-java/gradle.properties').withInputStream { sdkProperties.load(it) } +def pluginVersion = sdkProperties.getProperty('version') + +dependencies { + implementation 'org.springframework.boot:spring-boot-starter-web' + implementation 'org.springframework.boot:spring-boot-starter-actuator' + implementation "com.launchdarkly:launchdarkly-java-server-sdk-observability:${pluginVersion}" + implementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' + // No explicit opentelemetry-api: Attributes, Severity and Span arrive + // through the plugin's compile-scoped dependency. + + testImplementation 'org.springframework.boot:spring-boot-starter-test' +} + +tasks.named('test') { + useJUnitPlatform() +} + +// Groups that must never reach an application's runtime classpath through the plugin. +def forbiddenRuntimeGroups = ['com.squareup.okhttp3', 'com.squareup.okio', 'org.jetbrains.kotlin', 'org.jetbrains.kotlinx'] + +tasks.register('checkConsumerClasspath') { + group = 'verification' + description = 'Fails when the plugin leaks OkHttp, Okio or Kotlin into this application.' + def runtime = configurations.runtimeClasspath + doLast { + def leaked = runtime.resolvedConfiguration.resolvedArtifacts + .collect { it.moduleVersion.id } + .findAll { forbiddenRuntimeGroups.contains(it.group) } + .collect { "${it.group}:${it.name}:${it.version}" } + .unique() + if (!leaked.isEmpty()) { + throw new GradleException("Forbidden artifacts on the application runtime classpath: ${leaked.join(', ')}") + } + } +} + +tasks.named('check') { + dependsOn 'checkConsumerClasspath' +} diff --git a/e2e/java-plugin-spring-boot/settings.gradle b/e2e/java-plugin-spring-boot/settings.gradle new file mode 100644 index 0000000000..957c2ef056 --- /dev/null +++ b/e2e/java-plugin-spring-boot/settings.gradle @@ -0,0 +1,20 @@ +pluginManagement { + repositories { + gradlePluginPortal() + mavenCentral() + } +} + +rootProject.name = 'java-plugin-spring-boot-example' + +// By default the app builds against the plugin sources in this repository, so +// it needs no published artifact. Pass -PuseMavenLocal to resolve the plugin +// from ~/.m2 instead (after `./gradlew :lib:publishToMavenLocal` in the SDK +// directory), which is how an application would consume it. +if (!gradle.startParameter.projectProperties.containsKey('useMavenLocal')) { + includeBuild('../../sdk/@launchdarkly/observability-java') { + dependencySubstitution { + substitute module('com.launchdarkly:launchdarkly-java-server-sdk-observability') using project(':lib') + } + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ApiController.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ApiController.java new file mode 100644 index 0000000000..1881ca8979 --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ApiController.java @@ -0,0 +1,62 @@ +package com.launchdarkly.observability.example.springboot; + +import com.launchdarkly.sdk.LDContext; +import com.launchdarkly.sdk.server.LDClient; +import io.opentelemetry.api.trace.Span; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.PathVariable; +import org.springframework.web.bind.annotation.RequestHeader; +import org.springframework.web.bind.annotation.RestController; + +import java.util.Map; +import java.util.concurrent.ThreadLocalRandom; + +/** + * Routes that exercise the plugin: every handler evaluates a flag (recorded as + * a span event by the plugin's hook), and some record errors. + */ +@RestController +public class ApiController { + private final LDClient client; + + public ApiController(LDClient client) { + this.client = client; + } + + @GetMapping("/") + public String index(@RequestHeader(value = "X-User-Key", required = false) String userKey) { + boolean flagged = client.boolVariation("example-greeting", context(userKey), false); + return (flagged ? "Hello from the flagged path" : "Hello, World!") + "\n"; + } + + @GetMapping("/rolldice") + public Map rollDice(@RequestHeader(value = "X-User-Key", required = false) String userKey) { + LDContext context = context(userKey); + int sides = client.intVariation("dice-sides", context, 6); + int roll = ThreadLocalRandom.current().nextInt(1, sides + 1); + Span.current().setAttribute("dice.roll", roll); + return Map.of("roll", roll, "sides", sides, "user", context.getKey()); + } + + @GetMapping("/flags/{key}") + public Map flag(@PathVariable String key, + @RequestHeader(value = "X-User-Key", required = false) String userKey) { + LDContext context = context(userKey); + return Map.of("key", key, "value", client.jsonValueVariation(key, context, com.launchdarkly.sdk.LDValue.ofNull()).toJsonString()); + } + + @GetMapping("/error") + public String error(@RequestHeader(value = "X-User-Key", required = false) String userKey) { + if (client.boolVariation("soft-errors", context(userKey), false)) { + return "soft error recorded\n"; + } + throw new IllegalStateException("random error from the Spring Boot example"); + } + + private static LDContext context(String userKey) { + String key = userKey == null || userKey.isEmpty() + ? "user-" + ThreadLocalRandom.current().nextInt(1000) + : userKey; + return LDContext.builder(key).build(); + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/Application.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/Application.java new file mode 100644 index 0000000000..3a242a293b --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/Application.java @@ -0,0 +1,29 @@ +package com.launchdarkly.observability.example.springboot; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +/** + * A Spring Boot web backend that uses the LaunchDarkly Java Server SDK with + * the observability plugin the way a service does: a flag-aware client bean, + * a span, metrics and a log per request, and recorded errors. + * + *

Environment:

+ *
    + *
  • {@code LAUNCHDARKLY_SDK_KEY}: the SDK key. When unset the client runs + * offline so the backend still works without LaunchDarkly access.
    • + *
  • {@code PORT}: listen port, default 8080.
    • + *
  • {@code OTEL_EXPORTER_OTLP_ENDPOINT}: OTLP/HTTP base URL. Defaults to + * the LaunchDarkly endpoint.
    • + *
  • {@code LD_OBSERVABILITY_BACKEND_URL}: sampling-config URL. Defaults to + * the LaunchDarkly backend.
    • + *
  • {@code HTTPS_PROXY}: {@code host:port} of an egress proxy for exports + * and the sampling request.
    • + *
+ */ +@SpringBootApplication +public class Application { + public static void main(String[] args) { + SpringApplication.run(Application.class, args); + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ErrorHandling.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ErrorHandling.java new file mode 100644 index 0000000000..ec07fa5c94 --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/ErrorHandling.java @@ -0,0 +1,28 @@ +package com.launchdarkly.observability.example.springboot; + +import com.launchdarkly.observability.LDObserve; +import io.opentelemetry.api.common.Attributes; +import jakarta.servlet.http.HttpServletRequest; +import org.springframework.http.HttpStatus; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.ExceptionHandler; +import org.springframework.web.bind.annotation.RestControllerAdvice; +import org.springframework.web.servlet.NoHandlerFoundException; + +/** + * Records every unhandled exception through the plugin before answering 500. + */ +@RestControllerAdvice +public class ErrorHandling { + + @ExceptionHandler(NoHandlerFoundException.class) + public ResponseEntity notFound(NoHandlerFoundException e) { + return ResponseEntity.status(HttpStatus.NOT_FOUND).body("no route for " + e.getRequestURL() + "\n"); + } + + @ExceptionHandler(Exception.class) + public ResponseEntity unhandled(Exception e, HttpServletRequest request) { + LDObserve.recordError(e, Attributes.of(RequestTelemetryFilter.ROUTE, request.getRequestURI())); + return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("error: " + e.getMessage() + "\n"); + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java new file mode 100644 index 0000000000..745eac33b2 --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java @@ -0,0 +1,79 @@ +package com.launchdarkly.observability.example.springboot; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +import java.time.Duration; +import java.util.List; + +/** + * Builds the one {@link LDClient} for the application with the observability + * plugin installed, and shuts both down with the context. + */ +@Configuration +public class LaunchDarklyConfiguration { + private static final Logger log = LoggerFactory.getLogger(LaunchDarklyConfiguration.class); + + @Bean(destroyMethod = "close") + public LDClient ldClient( + @Value("${LAUNCHDARKLY_SDK_KEY:}") String sdkKey, + @Value("${OTEL_EXPORTER_OTLP_ENDPOINT:}") String otlpEndpoint, + @Value("${LD_OBSERVABILITY_BACKEND_URL:}") String backendUrl, + @Value("${HTTPS_PROXY:${https_proxy:}}") String httpsProxy, + @Value("${SERVICE_VERSION:dev}") String serviceVersion) { + ObservabilityOptions.Builder options = new ObservabilityOptions.Builder() + .serviceName("java-plugin-spring-boot-example") + .serviceVersion(serviceVersion) + .environment("test") + .resourceAttributes(Attributes.of( + AttributeKey.stringKey("example.framework"), "spring-boot", + AttributeKey.stringKey("example.runtime"), System.getProperty("java.version"))) + .logsApiLevel(ObservabilityOptions.LogLevel.INFO); + if (!otlpEndpoint.isEmpty()) { + options.otlpEndpoint(otlpEndpoint); + } + if (!backendUrl.isEmpty()) { + options.backendUrl(backendUrl); + } + if (!httpsProxy.isEmpty()) { + String hostPort = httpsProxy.replaceFirst("^[a-z]+://", "").replaceAll("/.*$", ""); + int colon = hostPort.lastIndexOf(':'); + options.proxyHostAndPort(hostPort.substring(0, colon), Integer.parseInt(hostPort.substring(colon + 1))); + } + + boolean offline = sdkKey.isEmpty(); + LDConfig config = new LDConfig.Builder() + .offline(offline) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options.build())))) + .build(); + LDClient client = new LDClient(offline ? "offline" : sdkKey, config); + log.info("LaunchDarkly client initialized={}{}", client.isInitialized(), + offline ? " (offline: LAUNCHDARKLY_SDK_KEY not set)" : ""); + return client; + } + + /** Flushes and stops the OpenTelemetry providers after the client bean closes. */ + @Bean + public ObservabilityShutdown observabilityShutdown() { + return new ObservabilityShutdown(); + } + + static final class ObservabilityShutdown implements AutoCloseable { + @Override + public void close() { + LDObserve.shutdown(); + } + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/RequestTelemetryFilter.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/RequestTelemetryFilter.java new file mode 100644 index 0000000000..19b7646996 --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/RequestTelemetryFilter.java @@ -0,0 +1,59 @@ +package com.launchdarkly.observability.example.springboot; + +import com.launchdarkly.observability.LDObserve; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.api.trace.StatusCode; +import io.opentelemetry.context.Scope; +import jakarta.servlet.FilterChain; +import jakarta.servlet.ServletException; +import jakarta.servlet.http.HttpServletRequest; +import jakarta.servlet.http.HttpServletResponse; +import org.springframework.stereotype.Component; +import org.springframework.web.filter.OncePerRequestFilter; + +import java.io.IOException; +import java.util.concurrent.TimeUnit; + +/** + * One span, a duration histogram, a request counter and a log line per HTTP + * request. Controllers run inside the span, so flag evaluations and errors + * recorded there are children of it. + */ +@Component +public class RequestTelemetryFilter extends OncePerRequestFilter { + static final AttributeKey ROUTE = AttributeKey.stringKey("http.route"); + static final AttributeKey METHOD = AttributeKey.stringKey("http.request.method"); + static final AttributeKey STATUS = AttributeKey.longKey("http.response.status_code"); + + @Override + protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) + throws ServletException, IOException { + String route = request.getRequestURI(); + long started = System.nanoTime(); + Span span = LDObserve.startSpan(request.getMethod() + " " + route, + Attributes.of(ROUTE, route, METHOD, request.getMethod())); + try (Scope ignored = span.makeCurrent()) { + chain.doFilter(request, response); + } catch (Exception e) { + span.setStatus(StatusCode.ERROR, e.getMessage()); + throw e; + } finally { + int status = response.getStatus(); + if (status >= 500) { + span.setStatus(StatusCode.ERROR); + } + span.setAttribute(STATUS, (long) status); + span.end(); + + double millis = TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - started) / 1000.0; + Attributes attrs = Attributes.of(ROUTE, route, STATUS, (long) status); + LDObserve.recordHistogram("http.server.request.duration_ms", millis, attrs); + LDObserve.recordIncr("http.server.requests", attrs); + LDObserve.recordLog(request.getMethod() + " " + route + " -> " + status, + status >= 500 ? Severity.ERROR : Severity.INFO, attrs); + } + } +} diff --git a/e2e/java-plugin-spring-boot/src/main/resources/application.properties b/e2e/java-plugin-spring-boot/src/main/resources/application.properties new file mode 100644 index 0000000000..e71dddaa4e --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/main/resources/application.properties @@ -0,0 +1,8 @@ +spring.application.name=java-plugin-spring-boot-example +server.port=${PORT:8080} +server.shutdown=graceful +spring.lifecycle.timeout-per-shutdown-phase=15s +management.endpoints.web.exposure.include=health +# Let the controller advice see unknown paths as 404s instead of the whitelabel page. +spring.web.resources.add-mappings=false +spring.mvc.throw-exception-if-no-handler-found=true diff --git a/e2e/java-plugin/Dockerfile b/e2e/java-plugin/Dockerfile deleted file mode 100644 index b71bd038a2..0000000000 --- a/e2e/java-plugin/Dockerfile +++ /dev/null @@ -1,18 +0,0 @@ -# Build context is the repository root: -# docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . -# The plugin is built from source, so the image never needs a published artifact. -FROM eclipse-temurin:21-jdk AS build -WORKDIR /src -COPY sdk/@launchdarkly/observability-java sdk/@launchdarkly/observability-java -COPY e2e/java-plugin e2e/java-plugin -WORKDIR /src/e2e/java-plugin -RUN ../../sdk/@launchdarkly/observability-java/gradlew -p . installDist --no-daemon --console=plain \ - -PmainClass=com.launchdarkly.observability.example.ServerExample - -FROM eclipse-temurin:21-jre -WORKDIR /app -COPY --from=build /src/e2e/java-plugin/build/install/java-plugin-example /app -ENV PORT=8080 -ENV BACKEND_URI="http://localhost:8080/" -EXPOSE 8080 -CMD ["/app/bin/java-plugin-example"] diff --git a/e2e/java-plugin/Makefile b/e2e/java-plugin/Makefile index 20245a31be..2cf591dd2c 100644 --- a/e2e/java-plugin/Makefile +++ b/e2e/java-plugin/Makefile @@ -1,4 +1,4 @@ -.PHONY: run check serve consumer-check +.PHONY: run check consumer-check SDK_DIR := ../../sdk/@launchdarkly/observability-java SDK_GRADLE := $(SDK_DIR)/gradlew @@ -8,11 +8,6 @@ GRADLE_ARGS := --no-daemon --console=plain run check: $(SDK_GRADLE) -p $(CURDIR) run $(GRADLE_ARGS) -# HTTP server example. Honours LAUNCHDARKLY_SDK_KEY, PORT, -# OTEL_EXPORTER_OTLP_ENDPOINT and LD_OBSERVABILITY_BACKEND_URL. -serve: - $(SDK_GRADLE) -p $(CURDIR) run $(GRADLE_ARGS) -PmainClass=com.launchdarkly.observability.example.ServerExample - # Publishes the plugin to ~/.m2 and builds this example against that # artifact, the way an application would. Catches POM scope mistakes and # transitive dependency leaks that the composite build hides. diff --git a/e2e/java-plugin/README.md b/e2e/java-plugin/README.md index 97f62a336c..c120717315 100644 --- a/e2e/java-plugin/README.md +++ b/e2e/java-plugin/README.md @@ -1,64 +1,35 @@ -# Java observability plugin examples +# Java observability plugin self-check -Two runnable programs for the LaunchDarkly Java server observability plugin. -Both build against the plugin sources in this repository by default, so they -never need a published artifact. - -## Self-check (`make run`) - -`PluginExample` starts a local OTLP and sampling endpoint, registers +`PluginExample` is a runnable check for the LaunchDarkly Java server +observability plugin. It starts a local OTLP and sampling endpoint, registers `ObservabilityPlugin` on an offline Java server SDK client, and exits non-zero -unless the collector saw the expected signals. A passing run prints one -`RESULT` line. `checkout-enabled` is the flag-evaluation span from -`TracingHook`. `kept-checkout` is kept by the sampling rule and carries -`launchdarkly.sampling.ratio`. `health-check` is dropped. A call to -`LDObserve` before the client starts must not install the OpenTelemetry no-op -global; the flag span only arrives when the hook is on the plugin's exporters. - -```bash -make run -``` +unless the collector saw the expected signals. It builds against the plugin +sources in this repository by default, so it never needs a published artifact. -## HTTP server (`make serve`) +For a web backend that uses the plugin the way a service does, see +[`../java-plugin-spring-boot`](../java-plugin-spring-boot). -`ServerExample` is a plain `com.sun.net.httpserver` service on port 8080 with -`/`, `/rolldice` and `/error`. Each request is a span, evaluates a flag (which -the plugin records on the span), records a histogram, a counter and a log; the -`/error` route records an exception. +## Run ```bash -export LAUNCHDARKLY_SDK_KEY="key-from-your-project" # unset = offline client -make serve & -until curl -s -o /dev/null localhost:8080/; do sleep 1; done -curl -s localhost:8080/rolldice -curl -s localhost:8080/error +make run ``` -Environment the server honours: - -| Variable | Purpose | -|----------|---------| -| `LAUNCHDARKLY_SDK_KEY` | SDK key. Unset runs the client offline. | -| `PORT` | Listen port, default `8080`. | -| `OTEL_EXPORTER_OTLP_ENDPOINT` | OTLP/HTTP base URL, e.g. `http://localhost:4318` for a local stack. | -| `LD_OBSERVABILITY_BACKEND_URL` | Sampling-config URL for a local stack. | -| `HTTPS_PROXY` | `host:port` of an egress proxy; applied to exports and the sampling request. | +A passing run prints one `RESULT` line. `checkout-enabled` is the +flag-evaluation span from `TracingHook`. `kept-checkout` is kept by the +sampling rule and carries `launchdarkly.sampling.ratio`. `health-check` is +dropped. A call to `LDObserve` before the client starts must not install the +OpenTelemetry no-op global; the flag span only arrives when the hook is on the +plugin's exporters. -### Docker - -The image is built from the repository root so the plugin can be compiled from -source. It is also wired into `e2e/compose.yml` as the `java` service, which -the dockerized e2e workflow starts and health-checks. +## Consumer check ```bash -docker build -f e2e/java-plugin/Dockerfile -t e2e-java-plugin . -docker run --rm -p 8080:8080 -e LAUNCHDARKLY_SDK_KEY e2e-java-plugin +make consumer-check ``` -## Consumer check (`make consumer-check`) - Publishes the plugin to `~/.m2` and builds the example against that artifact with `-PuseMavenLocal`, the way an application would. This verifies the published POM: the example compiles against `Attributes` and `Severity` without declaring `opentelemetry-api` itself, and no OkHttp, Okio or Kotlin arrives -transitively. CI runs this on every change to the plugin. +transitively. CI runs this on JDK 11 and 21 for every change to the plugin. diff --git a/e2e/java-plugin/build.gradle b/e2e/java-plugin/build.gradle index 34a4de7910..d272e88ac3 100644 --- a/e2e/java-plugin/build.gradle +++ b/e2e/java-plugin/build.gradle @@ -30,7 +30,7 @@ dependencies { } application { - mainClass = project.findProperty('mainClass') ?: 'com.launchdarkly.observability.example.PluginExample' + mainClass = 'com.launchdarkly.observability.example.PluginExample' } // Groups that must never reach a consumer's runtime classpath through the plugin. diff --git a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java deleted file mode 100644 index d7035b9db4..0000000000 --- a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/ServerExample.java +++ /dev/null @@ -1,168 +0,0 @@ -package com.launchdarkly.observability.example; - -import com.launchdarkly.observability.LDObserve; -import com.launchdarkly.observability.ObservabilityOptions; -import com.launchdarkly.observability.ObservabilityPlugin; -import com.launchdarkly.sdk.LDContext; -import com.launchdarkly.sdk.server.Components; -import com.launchdarkly.sdk.server.LDClient; -import com.launchdarkly.sdk.server.LDConfig; -import com.sun.net.httpserver.HttpExchange; -import com.sun.net.httpserver.HttpServer; -import io.opentelemetry.api.common.AttributeKey; -import io.opentelemetry.api.common.Attributes; -import io.opentelemetry.api.logs.Severity; -import io.opentelemetry.api.trace.Span; -import io.opentelemetry.api.trace.StatusCode; -import io.opentelemetry.context.Scope; - -import java.io.IOException; -import java.io.OutputStream; -import java.net.InetSocketAddress; -import java.nio.charset.StandardCharsets; -import java.time.Duration; -import java.util.List; -import java.util.concurrent.Executors; -import java.util.concurrent.ThreadLocalRandom; -import java.util.concurrent.TimeUnit; - -/** - * A long-running HTTP server that uses the LaunchDarkly Java Server SDK with - * the observability plugin, the way a service would. Every request is traced, - * evaluates a flag (which the plugin records as a span event), records a - * metric and a log, and some routes record an error. - * - *

Environment:

- *
    - *
  • {@code LAUNCHDARKLY_SDK_KEY}: the SDK key. When unset the client runs - * offline, so the server still works without LaunchDarkly access.
    • - *
  • {@code PORT}: listen port, default 8080.
    • - *
  • {@code OTEL_EXPORTER_OTLP_ENDPOINT}: OTLP/HTTP base URL. Defaults to - * the LaunchDarkly endpoint.
    • - *
  • {@code LD_OBSERVABILITY_BACKEND_URL}: sampling-config URL. Defaults to - * the LaunchDarkly backend.
    • - *
  • {@code HTTPS_PROXY} / {@code https_proxy}: {@code host:port} of an - * egress proxy for exports and the sampling request.
    • - *
- */ -public final class ServerExample { - private static final AttributeKey ROUTE = AttributeKey.stringKey("http.route"); - private static final AttributeKey STATUS = AttributeKey.longKey("http.response.status_code"); - - public static void main(String[] args) throws Exception { - String sdkKey = env("LAUNCHDARKLY_SDK_KEY", ""); - int port = Integer.parseInt(env("PORT", "8080")); - - ObservabilityOptions.Builder options = new ObservabilityOptions.Builder() - .serviceName("java-plugin-example") - .serviceVersion(env("SERVICE_VERSION", "dev")) - .environment("test") - .resourceAttributes(Attributes.of(AttributeKey.stringKey("example.runtime"), System.getProperty("java.version"))) - .logsApiLevel(ObservabilityOptions.LogLevel.INFO); - String otlp = env("OTEL_EXPORTER_OTLP_ENDPOINT", ""); - if (!otlp.isEmpty()) { - options.otlpEndpoint(otlp); - } - String backend = env("LD_OBSERVABILITY_BACKEND_URL", ""); - if (!backend.isEmpty()) { - options.backendUrl(backend); - } - String proxy = env("HTTPS_PROXY", env("https_proxy", "")); - if (!proxy.isEmpty()) { - String hostPort = proxy.replaceFirst("^[a-z]+://", "").replaceAll("/.*$", ""); - int colon = hostPort.lastIndexOf(':'); - options.proxyHostAndPort(hostPort.substring(0, colon), Integer.parseInt(hostPort.substring(colon + 1))); - } - - LDConfig config = new LDConfig.Builder() - .offline(sdkKey.isEmpty()) - .startWait(Duration.ofSeconds(5)) - .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options.build())))) - .build(); - LDClient client = new LDClient(sdkKey.isEmpty() ? "offline" : sdkKey, config); - System.out.println("LaunchDarkly client initialized=" + client.isInitialized() - + (sdkKey.isEmpty() ? " (offline: LAUNCHDARKLY_SDK_KEY not set)" : "")); - - HttpServer server = HttpServer.create(new InetSocketAddress(port), 0); - server.setExecutor(Executors.newFixedThreadPool(8)); - server.createContext("/", exchange -> handle(exchange, client, "/", ServerExample::index)); - server.createContext("/rolldice", exchange -> handle(exchange, client, "/rolldice", ServerExample::rollDice)); - server.createContext("/error", exchange -> handle(exchange, client, "/error", ServerExample::error)); - server.start(); - System.out.println("Listening on http://0.0.0.0:" + port + " (routes: /, /rolldice, /error)"); - - Runtime.getRuntime().addShutdownHook(new Thread(() -> { - server.stop(1); - try { - client.close(); - } catch (IOException ignored) { - // Nothing left to do on shutdown. - } - LDObserve.shutdown(); - }, "example-shutdown")); - - Thread.currentThread().join(); - } - - @FunctionalInterface - private interface Route { - String apply(LDClient client, LDContext context) throws Exception; - } - - private static void handle(HttpExchange exchange, LDClient client, String route, Route body) throws IOException { - long started = System.nanoTime(); - Span span = LDObserve.startSpan("HTTP " + exchange.getRequestMethod() + " " + route, - Attributes.of(ROUTE, route)); - int status = 200; - String response; - try (Scope ignored = span.makeCurrent()) { - LDContext context = LDContext.builder("user-" + ThreadLocalRandom.current().nextInt(1000)).build(); - response = body.apply(client, context); - } catch (Exception e) { - status = 500; - response = "error: " + e.getMessage() + "\n"; - span.setStatus(StatusCode.ERROR, e.getMessage()); - LDObserve.recordError(e, Attributes.of(ROUTE, route)); - } finally { - span.setAttribute(STATUS, (long) status); - span.end(); - } - double millis = TimeUnit.NANOSECONDS.toMicros(System.nanoTime() - started) / 1000.0; - LDObserve.recordHistogram("http.server.duration_ms", millis, Attributes.of(ROUTE, route)); - LDObserve.recordIncr("http.server.requests", Attributes.of(ROUTE, route, STATUS, (long) status)); - LDObserve.recordLog(exchange.getRequestMethod() + " " + route + " -> " + status, - status >= 500 ? Severity.ERROR : Severity.INFO, Attributes.of(ROUTE, route)); - - byte[] bytes = response.getBytes(StandardCharsets.UTF_8); - exchange.getResponseHeaders().set("Content-Type", "text/plain; charset=utf-8"); - exchange.sendResponseHeaders(status, bytes.length); - try (OutputStream out = exchange.getResponseBody()) { - out.write(bytes); - } - } - - private static String index(LDClient client, LDContext context) { - boolean enabled = client.boolVariation("example-greeting", context, false); - return (enabled ? "Hello from the flagged path" : "Hello, World!") + "\n"; - } - - private static String rollDice(LDClient client, LDContext context) { - int sides = (int) client.intVariation("dice-sides", context, 6); - int roll = ThreadLocalRandom.current().nextInt(1, sides + 1); - Span.current().setAttribute("dice.roll", roll); - return roll + "\n"; - } - - private static String error(LDClient client, LDContext context) { - boolean soft = client.boolVariation("soft-errors", context, false); - if (soft) { - return "soft error recorded\n"; - } - throw new IllegalStateException("random error from the Java plugin example"); - } - - private static String env(String name, String fallback) { - String value = System.getenv(name); - return value == null || value.isEmpty() ? fallback : value; - } -} From 6ca7fc5e10502d55b574ffeaf3341f610e956084 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:29:44 +0000 Subject: [PATCH 12/47] ci: name the dockerized Java e2e service after its directory app_runner.py asserts that e2e/ exists before building the compose service, so the service, image and matrix entry are java-plugin-spring-boot rather than java. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .github/workflows/e2e.yml | 2 +- e2e/compose.yml | 7 ++++--- e2e/java-plugin-spring-boot/README.md | 2 +- e2e/tests/src/app_runner.py | 2 +- 4 files changed, 7 insertions(+), 6 deletions(-) diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml index 51394ffe82..db07120c2d 100644 --- a/.github/workflows/e2e.yml +++ b/.github/workflows/e2e.yml @@ -14,7 +14,7 @@ jobs: runs-on: ubuntu-22.04-8core-32gb strategy: matrix: - app: ['dotnet', 'dotnet4', 'go', 'java', 'python', 'ruby'] + app: ['dotnet', 'dotnet4', 'go', 'java-plugin-spring-boot', 'python', 'ruby'] steps: - uses: actions/checkout@v4 diff --git a/e2e/compose.yml b/e2e/compose.yml index 486e4b8060..692ab10140 100644 --- a/e2e/compose.yml +++ b/e2e/compose.yml @@ -48,10 +48,11 @@ services: args: IMAGE_NAME_BASE: ${IMAGE_NAME_BASE-ghcr.io/highlight/e2e:latest} container_name: ruby - java: - image: ${IMAGE_NAME-ghcr.io/highlight/e2e-java:latest} + # Service name matches the e2e/ directory, which app_runner.py requires. + java-plugin-spring-boot: + image: ${IMAGE_NAME-ghcr.io/highlight/e2e-java-plugin-spring-boot:latest} build: # The plugin is compiled from source, so the context is the repo root. context: .. dockerfile: e2e/java-plugin-spring-boot/Dockerfile - container_name: java + container_name: java-plugin-spring-boot diff --git a/e2e/java-plugin-spring-boot/README.md b/e2e/java-plugin-spring-boot/README.md index 4bbd67275f..540fa7196a 100644 --- a/e2e/java-plugin-spring-boot/README.md +++ b/e2e/java-plugin-spring-boot/README.md @@ -51,7 +51,7 @@ Kotlin onto the application's classpath. ## Docker The image is built from the repository root so the plugin can be compiled -from source. It is the `java` service in `e2e/compose.yml`, which the +from source. It is the `java-plugin-spring-boot` service in `e2e/compose.yml`, which the dockerized e2e workflow builds, starts and health-checks. ```bash diff --git a/e2e/tests/src/app_runner.py b/e2e/tests/src/app_runner.py index a9dd6b472d..8185498ef8 100644 --- a/e2e/tests/src/app_runner.py +++ b/e2e/tests/src/app_runner.py @@ -179,7 +179,7 @@ def main(): "dotnet", "dotnet4", "go", - "java", + "java-plugin-spring-boot", "python", "ruby", ], From 331597ae16d9e46173f51be3017c3c253c8b0eba Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 20:44:45 +0000 Subject: [PATCH 13/47] ci: format the e2e workflow matrix the way prettier wants it Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .github/workflows/e2e.yml | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml index db07120c2d..29a1425108 100644 --- a/.github/workflows/e2e.yml +++ b/.github/workflows/e2e.yml @@ -14,7 +14,15 @@ jobs: runs-on: ubuntu-22.04-8core-32gb strategy: matrix: - app: ['dotnet', 'dotnet4', 'go', 'java-plugin-spring-boot', 'python', 'ruby'] + app: + [ + 'dotnet', + 'dotnet4', + 'go', + 'java-plugin-spring-boot', + 'python', + 'ruby', + ] steps: - uses: actions/checkout@v4 From 8b258def745f5e74767acf65480990636990dd4c Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 21:15:10 +0000 Subject: [PATCH 14/47] fix: tolerate JSON nulls in the sampling payload and export log severity text GraphQL returns null for optional fields that are unset, and Gson's getAsJsonObject/getAsJsonArray throw on JsonNull, so one null field aborted the whole sampling payload; the exception was swallowed and sampling silently never applied. Every lookup now treats null like absent and a null samplingRatio defaults to 1. LDObserve.recordLog set only the numeric severity. Severity number and text are separate OTLP fields, and the backend UI and severityText sampling rules read the text, so it is set to the enum name, as the Android emitter does. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .../launchdarkly/observability/LDObserve.java | 3 + .../internal/SamplingApiService.java | 70 ++++++++++++++----- .../internal/GraphQLClientTest.java | 23 ++++++ .../internal/PluginOptionsFlowTest.java | 2 + 4 files changed, 79 insertions(+), 19 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index 143d58241c..93be5a623f 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -74,8 +74,11 @@ public static void recordUpDownCounter(String name, long value, Attributes attri */ public static void recordLog(String message, Severity severity, Attributes attributes) { Logger logger = OtelManager.getLogger(); + // Severity number and text are separate OTLP fields; the backend UI + // and severityText sampling rules read the text. logger.logRecordBuilder() .setSeverity(severity) + .setSeverityText(severity.name()) .setBody(message) .setAllAttributes(attributes) .emit(); diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index dc069a9550..0b5dc20475 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -106,7 +106,7 @@ public SamplingConfig getSamplingConfig(String sdkKey) { if (data == null || !data.isJsonObject()) { return null; } - JsonObject sampling = data.getAsJsonObject().getAsJsonObject("sampling"); + JsonObject sampling = objectOrNull(data.getAsJsonObject(), "sampling"); if (sampling == null) { return null; } @@ -121,17 +121,21 @@ private SamplingConfig parseSamplingConfig(JsonObject sampling) { List spans = new ArrayList<>(); List logs = new ArrayList<>(); - JsonArray spansArray = sampling.getAsJsonArray("spans"); + JsonArray spansArray = arrayOrNull(sampling, "spans"); if (spansArray != null) { for (JsonElement el : spansArray) { - spans.add(parseSpanConfig(el.getAsJsonObject())); + if (el.isJsonObject()) { + spans.add(parseSpanConfig(el.getAsJsonObject())); + } } } - JsonArray logsArray = sampling.getAsJsonArray("logs"); + JsonArray logsArray = arrayOrNull(sampling, "logs"); if (logsArray != null) { for (JsonElement el : logsArray) { - logs.add(parseLogConfig(el.getAsJsonObject())); + if (el.isJsonObject()) { + logs.add(parseLogConfig(el.getAsJsonObject())); + } } } @@ -139,46 +143,74 @@ private SamplingConfig parseSamplingConfig(JsonObject sampling) { } private SpanSamplingConfig parseSpanConfig(JsonObject obj) { - MatchConfig name = parseMatchConfig(obj.getAsJsonObject("name")); - List attributes = parseAttributeConfigs(obj.getAsJsonArray("attributes")); + MatchConfig name = parseMatchConfig(objectOrNull(obj, "name")); + List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); List events = new ArrayList<>(); - JsonArray eventsArray = obj.getAsJsonArray("events"); + JsonArray eventsArray = arrayOrNull(obj, "events"); if (eventsArray != null) { for (JsonElement el : eventsArray) { + if (!el.isJsonObject()) { + continue; + } JsonObject eventObj = el.getAsJsonObject(); events.add(new SpanEventMatchConfig( - parseMatchConfig(eventObj.getAsJsonObject("name")), - parseAttributeConfigs(eventObj.getAsJsonArray("attributes")) + parseMatchConfig(objectOrNull(eventObj, "name")), + parseAttributeConfigs(arrayOrNull(eventObj, "attributes")) )); } } - int ratio = obj.has("samplingRatio") ? obj.get("samplingRatio").getAsInt() : 1; - return new SpanSamplingConfig(name, attributes, events, ratio); + return new SpanSamplingConfig(name, attributes, events, ratioOrDefault(obj)); } private LogSamplingConfig parseLogConfig(JsonObject obj) { - MatchConfig message = parseMatchConfig(obj.getAsJsonObject("message")); - MatchConfig severityText = parseMatchConfig(obj.getAsJsonObject("severityText")); - List attributes = parseAttributeConfigs(obj.getAsJsonArray("attributes")); - int ratio = obj.has("samplingRatio") ? obj.get("samplingRatio").getAsInt() : 1; - return new LogSamplingConfig(message, severityText, attributes, ratio); + MatchConfig message = parseMatchConfig(objectOrNull(obj, "message")); + MatchConfig severityText = parseMatchConfig(objectOrNull(obj, "severityText")); + List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); + return new LogSamplingConfig(message, severityText, attributes, ratioOrDefault(obj)); } private List parseAttributeConfigs(JsonArray array) { if (array == null) return Collections.emptyList(); List result = new ArrayList<>(); for (JsonElement el : array) { + if (!el.isJsonObject()) { + continue; + } JsonObject obj = el.getAsJsonObject(); result.add(new AttributeMatchConfig( - parseMatchConfig(obj.getAsJsonObject("key")), - parseMatchConfig(obj.getAsJsonObject("attribute")) + parseMatchConfig(objectOrNull(obj, "key")), + parseMatchConfig(objectOrNull(obj, "attribute")) )); } return result; } + /** + * GraphQL returns {@code null} for optional fields that are unset, and + * Gson's {@code getAsJsonObject} / {@code getAsJsonArray} throw on + * {@code JsonNull}. One null field must not abort the whole payload, so + * every lookup goes through these and treats null like absent. + */ + private static JsonObject objectOrNull(JsonObject parent, String key) { + JsonElement el = parent.get(key); + return el != null && el.isJsonObject() ? el.getAsJsonObject() : null; + } + + private static JsonArray arrayOrNull(JsonObject parent, String key) { + JsonElement el = parent.get(key); + return el != null && el.isJsonArray() ? el.getAsJsonArray() : null; + } + + private static int ratioOrDefault(JsonObject obj) { + JsonElement el = obj.get("samplingRatio"); + if (el == null || !el.isJsonPrimitive() || !el.getAsJsonPrimitive().isNumber()) { + return 1; + } + return el.getAsInt(); + } + private MatchConfig parseMatchConfig(JsonObject obj) { if (obj == null) return null; if (obj.has("regexValue") && !obj.get("regexValue").isJsonNull()) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java index 8688c4a545..493ffee72b 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java @@ -74,6 +74,29 @@ void samplingQueryIsACompileTimeConstantAndIsSentWithVariables() throws Exceptio assertEquals("", headerValues.get(0), "no custom header was configured"); } + @Test + void samplingPayloadWithJsonNullsStillParses() throws Exception { + // GraphQL returns null for unset optional fields. A single null must not + // abort the payload, or sampling silently never applies. + response = "{\"data\":{\"sampling\":{\"spans\":[" + + "{\"name\":null,\"attributes\":null,\"events\":null,\"samplingRatio\":null}," + + "{\"name\":{\"matchValue\":\"health-check\",\"regexValue\":null}," + + "\"attributes\":[{\"key\":{\"matchValue\":\"k\"},\"attribute\":null}]," + + "\"events\":[{\"name\":null,\"attributes\":null}],\"samplingRatio\":0}" + + "],\"logs\":[{\"message\":null,\"severityText\":{\"matchValue\":\"ERROR\"}," + + "\"attributes\":null,\"samplingRatio\":3}]}}}"; + GraphQLClient client = new GraphQLClient(url("/graphql")); + + SamplingConfig config = new SamplingApiService(client).getSamplingConfig("sdk-test"); + + assertNotNull(config, "nulls in optional fields must not abort parsing"); + assertEquals(2, config.getSpans().size()); + assertEquals(1, config.getSpans().get(0).getSamplingRatio(), "null ratio defaults to 1"); + assertEquals(0, config.getSpans().get(1).getSamplingRatio()); + assertEquals(1, config.getLogs().size()); + assertEquals(3, config.getLogs().get(0).getSamplingRatio()); + } + @Test void customHeadersAreSentWithEveryRequest() throws Exception { GraphQLClient client = new GraphQLClient(url("/graphql"), Map.of("X-Test-Header", "abc"), null); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java index 5ea1db158e..278df195ab 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginOptionsFlowTest.java @@ -153,6 +153,8 @@ void logsBelowConfiguredLevelAreNotExported() throws Exception { assertTrue(waitFor("/v1/logs"), "no log export"); assertTrue(anyBodyContains("/v1/logs", "warn-signal")); assertTrue(anyBodyContains("/v1/logs", "error-signal")); + assertTrue(anyBodyContains("/v1/logs", "WARN"), "severity text missing on exported log"); + assertTrue(anyBodyContains("/v1/logs", "ERROR"), "severity text missing on exported log"); assertFalse(anyBodyContains("/v1/logs", "debug-noise"), "DEBUG record exported below WARN threshold"); assertFalse(anyBodyContains("/v1/logs", "info-noise"), "INFO record exported below WARN threshold"); } From c09b2a78037789a9f0950eb8ef88331409d801be Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 21:15:10 +0000 Subject: [PATCH 15/47] ci: suppress DevSkim loopback findings on the smoke test and e2e Dockerfile The smoke test reaches the app it just started on the same runner, and app_runner.py reads BACKEND_URI from the container the way the other e2e apps set it. Both are loopback by design, which DS162092 flags as debug code; the repo's convention is to mark these as used in tests. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .github/workflows/java-plugin-e2e.yml | 16 ++++++++++------ e2e/java-plugin-spring-boot/Dockerfile | 3 +++ 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/.github/workflows/java-plugin-e2e.yml b/.github/workflows/java-plugin-e2e.yml index 7a30fadd48..75b4b60c7f 100644 --- a/.github/workflows/java-plugin-e2e.yml +++ b/.github/workflows/java-plugin-e2e.yml @@ -52,19 +52,23 @@ jobs: - name: Smoke-test the Spring Boot backend working-directory: ./e2e/java-plugin-spring-boot + # The app under test runs on this runner, so it is reached on the + # loopback address. DevSkim DS162092 flags that as debug code. + env: + APP: http://localhost:8080 # DevSkim: ignore DS162092 run: | java -jar build/libs/*.jar > app.log 2>&1 & APP_PID=$! for i in $(seq 1 120); do - if curl -sf -o /dev/null localhost:8080/; then break; fi + if curl -sf -o /dev/null "$APP/"; then break; fi if ! kill -0 "$APP_PID" 2>/dev/null; then echo "app exited early"; cat app.log; exit 1; fi sleep 1 done - curl -sf localhost:8080/ || { cat app.log; exit 1; } - curl -sf -H 'X-User-Key: ci' localhost:8080/rolldice || { cat app.log; exit 1; } - curl -sf localhost:8080/flags/example-greeting || { cat app.log; exit 1; } - curl -sf localhost:8080/actuator/health || { cat app.log; exit 1; } - code=$(curl -s -o /dev/null -w '%{http_code}' localhost:8080/error) + curl -sf "$APP/" || { cat app.log; exit 1; } + curl -sf -H 'X-User-Key: ci' "$APP/rolldice" || { cat app.log; exit 1; } + curl -sf "$APP/flags/example-greeting" || { cat app.log; exit 1; } + curl -sf "$APP/actuator/health" || { cat app.log; exit 1; } + code=$(curl -s -o /dev/null -w '%{http_code}' "$APP/error") [ "$code" = "500" ] || { echo "expected 500 from /error, got $code"; cat app.log; exit 1; } kill -TERM "$APP_PID" wait "$APP_PID" || true diff --git a/e2e/java-plugin-spring-boot/Dockerfile b/e2e/java-plugin-spring-boot/Dockerfile index 22328acc66..5be3a59526 100644 --- a/e2e/java-plugin-spring-boot/Dockerfile +++ b/e2e/java-plugin-spring-boot/Dockerfile @@ -13,6 +13,9 @@ FROM eclipse-temurin:21-jre WORKDIR /app COPY --from=build /src/app.jar /app/app.jar ENV PORT=8080 +# e2e/tests/src/app_runner.py reads BACKEND_URI from the container to find the +# port to publish and the URL to health-check, as the other e2e apps do. +# DevSkim: ignore DS162092 ENV BACKEND_URI="http://localhost:8080/" EXPOSE 8080 CMD ["java", "-jar", "/app/app.jar"] From 9898a2c067702c62e78366499fc7c412e584d96e Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 21:28:55 +0000 Subject: [PATCH 16/47] ci: explain the dismissed DevSkim finding on the e2e Dockerfile A DevSkim suppression on the line above an ENV instruction has no effect, so the alert is dismissed as used in tests instead, as for the other e2e Dockerfiles. The comment says so. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- e2e/java-plugin-spring-boot/Dockerfile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/e2e/java-plugin-spring-boot/Dockerfile b/e2e/java-plugin-spring-boot/Dockerfile index 5be3a59526..ca3aa92dbc 100644 --- a/e2e/java-plugin-spring-boot/Dockerfile +++ b/e2e/java-plugin-spring-boot/Dockerfile @@ -15,7 +15,9 @@ COPY --from=build /src/app.jar /app/app.jar ENV PORT=8080 # e2e/tests/src/app_runner.py reads BACKEND_URI from the container to find the # port to publish and the URL to health-check, as the other e2e apps do. -# DevSkim: ignore DS162092 +# (DevSkim DS162092 flags the loopback literal; it is dismissed as used in +# tests, like the other e2e Dockerfiles, because ENV lines take no inline +# suppression comment.) ENV BACKEND_URI="http://localhost:8080/" EXPOSE 8080 CMD ["java", "-jar", "/app/app.jar"] From 2f3acf0d5c0a31e2cf1926e384b413102765489e Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 19 Oct 2026 21:41:36 +0000 Subject: [PATCH 17/47] ci: publish the Java plugin to Maven Central on release release-please already versioned the component but no job published it, so a release would have produced a tag and nothing on Maven Central. Adds a publish-java-sdk composite action modelled on the Android one (same Sonatype Central account and code-signing key, no Android SDK setup), a release-java-plugin job and outputs in release-please.yml, and a Java toggle in the manual publish workflow with dry-run. publish.sh runs :lib:build before publishToSonatype so the unit tests, the runtime-classpath guard and the POM guard gate every upload; the manual dry run does the same build without publishing. Co-Authored-By: Claude Fable 5.1 Generated-by: termag --- .github/actions/publish-java-sdk/action.yml | 76 +++++++++++++++++++++ .github/actions/publish-java-sdk/publish.sh | 37 ++++++++++ .github/workflows/manual-publish.yml | 22 ++++++ .github/workflows/release-please.yml | 20 ++++++ 4 files changed, 155 insertions(+) create mode 100644 .github/actions/publish-java-sdk/action.yml create mode 100755 .github/actions/publish-java-sdk/publish.sh diff --git a/.github/actions/publish-java-sdk/action.yml b/.github/actions/publish-java-sdk/action.yml new file mode 100644 index 0000000000..e0aa139c3d --- /dev/null +++ b/.github/actions/publish-java-sdk/action.yml @@ -0,0 +1,76 @@ +name: 'Publish Java SDK' +description: 'Build and publish the Java server observability plugin to Maven Central' + +inputs: + workspace-path: + description: 'Path to the Java SDK workspace' + required: true + default: 'sdk/@launchdarkly/observability-java' + java_version: + description: 'The Java version to use.' + required: false + default: '17' + java_distribution: + description: 'The Java distribution to use.' + required: false + default: 'temurin' + aws-role-arn: + description: 'AWS role ARN for accessing secrets' + required: true + dry-run: + description: 'Whether to run the publish in dry-run mode' + required: false + default: 'false' + prerelease: + description: 'Whether to publish a prerelease version' + required: false + default: 'false' + +runs: + using: 'composite' + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Setup Java + uses: actions/setup-java@v4 + with: + distribution: ${{ inputs.java_distribution }} + java-version: ${{ inputs.java_version }} + + # Same Sonatype Central account and code-signing key as the Android + # plugin; both publish under the com.launchdarkly namespace. + - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0 + name: Get secrets + with: + aws_assume_role: ${{ inputs.aws-role-arn }} + ssm_parameter_pairs: | + /production/common/releasing/sonatype/central/username = SONATYPE_USER_NAME, + /production/common/releasing/sonatype/central/password = SONATYPE_PASSWORD, + /production/common/releasing/android_code_signing/private_key_id = SIGNING_KEY_ID, + /production/common/releasing/android_code_signing/private_key_passphrase = SIGNING_KEY_PASSPHRASE + s3_path_pairs: 'launchdarkly-releaser/android/code-signing-keyring.gpg = code-signing-keyring.gpg' + + - name: Publish Library + shell: bash + if: ${{ inputs.dry-run != 'true' }} + working-directory: ${{ inputs.workspace-path }} + env: + LD_RELEASE_IS_PRERELEASE: ${{ inputs.prerelease }} + SIGNING_KEY_ID: ${{ env.SIGNING_KEY_ID }} + SIGNING_KEY_PASSPHRASE: ${{ env.SIGNING_KEY_PASSPHRASE }} + SIGNING_SECRET_KEY_RING_FILE: ${{ github.workspace }}/code-signing-keyring.gpg + SONATYPE_USER_NAME: ${{ env.SONATYPE_USER_NAME }} + SONATYPE_PASSWORD: ${{ env.SONATYPE_PASSWORD }} + run: source $GITHUB_ACTION_PATH/publish.sh + + # A dry run still builds and verifies the artifact (unit tests, the + # runtime-classpath guard and the POM guard) so a broken release is + # caught before anyone flips dry-run off. + - name: Dry Run Publish Library + shell: bash + if: ${{ inputs.dry-run == 'true' }} + working-directory: ${{ inputs.workspace-path }} + run: | + ./gradlew :lib:build --no-daemon --console=plain + echo "Dry run. Not publishing." diff --git a/.github/actions/publish-java-sdk/publish.sh b/.github/actions/publish-java-sdk/publish.sh new file mode 100755 index 0000000000..679fa33957 --- /dev/null +++ b/.github/actions/publish-java-sdk/publish.sh @@ -0,0 +1,37 @@ +#!/bin/bash + +set -ue + +GRADLE_ARGS=( + --no-daemon + --console=plain + -Psigning.keyId="${SIGNING_KEY_ID}" + -Psigning.password="${SIGNING_KEY_PASSPHRASE}" + -Psigning.secretKeyRingFile="${SIGNING_SECRET_KEY_RING_FILE}" + -PsonatypeUsername="${SONATYPE_USER_NAME}" + -PsonatypePassword="${SONATYPE_PASSWORD}" +) + +# `check` runs the unit tests plus the guards on what gets published: no +# OkHttp/Okio/Kotlin on the runtime classpath, and opentelemetry-api at +# compile scope in the POM. Nothing is uploaded if any of them fail. +echo "Verifying the artifact" +./gradlew :lib:build "${GRADLE_ARGS[@]}" || { + echo "Gradle build/verification failed" >&2 + exit 1 +} + +echo "Publishing to Sonatype" +if [ "${LD_RELEASE_IS_PRERELEASE}" == "true" ]; then + echo "PRERELEASE" + ./gradlew publishToSonatype "${GRADLE_ARGS[@]}" || { + echo "Gradle publish/release failed" >&2 + exit 1 + } +else + echo "RELEASE" + ./gradlew publishToSonatype closeAndReleaseSonatypeStagingRepository "${GRADLE_ARGS[@]}" || { + echo "Gradle publish/release failed" >&2 + exit 1 + } +fi diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml index 547334574a..6d44502643 100644 --- a/.github/workflows/manual-publish.yml +++ b/.github/workflows/manual-publish.yml @@ -26,6 +26,10 @@ on: description: 'The tag name for the python package. Should be set when publishing a python package.' type: string required: false + release_launchdarkly_java: + description: 'Should release the launchdarkly-java-server-sdk-observability package.' + type: boolean + required: true release_launchdarkly_dotnet: description: 'Should release @launchdarkly/observability-dotnet package.' type: boolean @@ -143,6 +147,24 @@ jobs: dry-run: ${{ inputs.dry-run }} prerelease: ${{ inputs.prerelease }} + publish-java-sdk: + runs-on: ubuntu-latest + if: ${{ inputs.release_launchdarkly_java == true }} + permissions: + id-token: write + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Publish Java SDK + id: publish + uses: ./.github/actions/publish-java-sdk + with: + workspace-path: sdk/@launchdarkly/observability-java + aws-role-arn: ${{ vars.AWS_ROLE_ARN }} + dry-run: ${{ inputs.dry-run }} + prerelease: ${{ inputs.prerelease }} + publish-dotnet-sdk: runs-on: ubuntu-latest if: ${{ inputs.release_launchdarkly_dotnet == true }} diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml index 7ab4689f9d..a4132ba23e 100644 --- a/.github/workflows/release-please.yml +++ b/.github/workflows/release-please.yml @@ -24,6 +24,8 @@ jobs: ruby-plugin-tag-name: ${{ steps.release.outputs['sdk/@launchdarkly/observability-ruby--tag_name'] }} flutter-plugin-released: ${{ steps.release.outputs['sdk/flutter/packages/observability--release_created'] }} flutter-plugin-tag-name: ${{ steps.release.outputs['sdk/flutter/packages/observability--tag_name'] }} + java-plugin-released: ${{ steps.release.outputs['sdk/@launchdarkly/observability-java--release_created'] }} + java-plugin-tag-name: ${{ steps.release.outputs['sdk/@launchdarkly/observability-java--tag_name'] }} steps: # Normally a workflow cannot trigger another workflow. For this workflow we need to run required checks. # Github determines that something is created by a workflow/bot based on the token. @@ -101,6 +103,24 @@ jobs: workspace-path: sdk/@launchdarkly/observability-android aws-role-arn: ${{ vars.AWS_ROLE_ARN }} + release-java-plugin: + runs-on: ubuntu-latest + permissions: + id-token: write # Used for publishing secrets. + contents: write + needs: ['release-package'] + if: ${{ needs.release-package.outputs.java-plugin-released == 'true' }} + steps: + - name: Checkout + uses: actions/checkout@v4 + + - name: Publish Java SDK + id: publish + uses: ./.github/actions/publish-java-sdk + with: + workspace-path: sdk/@launchdarkly/observability-java + aws-role-arn: ${{ vars.AWS_ROLE_ARN }} + release-dotnet-plugin: runs-on: ubuntu-latest permissions: From d0972788641ebd5d64d72d32ac49d5627009ccf1 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 15:20:07 +0000 Subject: [PATCH 18/47] fix: compile sampling regexes as sent and match substrings Drop the character allowlist and nested-quantifier rejection. Patterns are compiled as the backend sends them, like the Go SDK; one that does not compile logs a warning and its rule is skipped. Regex rules now match anywhere in the value (find, not matches), as in the other SDKs. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../internal/sampling/SamplingConfig.java | 128 ++---------------- .../internal/sampling/CustomSamplerTest.java | 76 +++++++++-- 2 files changed, 77 insertions(+), 127 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java index c88c2dd69c..8abf278dd3 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -2,6 +2,7 @@ import java.util.Collections; import java.util.List; +import java.util.logging.Logger; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; @@ -32,10 +33,7 @@ public String toString() { * it on every span or log. */ public static final class MatchConfig { - private static final int MAX_REGEX_LENGTH = 128; - private static final String ALLOWED_REGEX_CHARS = - "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" - + ".*+?^$|()[]{}\\-_:/ @#,"; + private static final Logger log = Logger.getLogger(MatchConfig.class.getName()); private final String value; private final String regexPattern; @@ -52,128 +50,26 @@ public static MatchConfig ofValue(String value) { } public static MatchConfig ofRegex(String pattern) { - return new MatchConfig(null, pattern, compileBounded(pattern)); + return new MatchConfig(null, pattern, compile(pattern)); } /** - * Compiles a sampling regex once, or returns null when the rule must - * not be used. The pattern comes from LaunchDarkly sampling config - * (or a custom backend URL). A bad pattern never throws and never - * matches. Only an allowlisted copy is compiled, length is capped, - * and nested quantifiers and backreferences are rejected so a rule - * cannot ReDoS the export path. + * Compiles a sampling regex as sent by the backend, like the Go SDK. + * A pattern that does not compile is logged and the rule is skipped: + * it never matches, and parsing the rest of the config carries on. */ - private static Pattern compileBounded(String pattern) { - if (pattern == null || pattern.isEmpty() || pattern.length() > MAX_REGEX_LENGTH) { - return null; - } - if (isCatastrophic(pattern)) { - return null; - } - String allowlisted = allowlistedCopy(pattern); - if (allowlisted == null) { + private static Pattern compile(String pattern) { + if (pattern == null) { return null; } try { - // codeql[java/regex-injection]: allowlisted copy of sampling config, length-capped, nested quantifiers rejected - return Pattern.compile(allowlisted); - } catch (PatternSyntaxException ignored) { + return Pattern.compile(pattern); + } catch (PatternSyntaxException e) { + log.warning("Skipping sampling rule with invalid regex " + pattern + ": " + e.getDescription()); return null; } } - private static String allowlistedCopy(String pattern) { - StringBuilder copy = new StringBuilder(pattern.length()); - for (int i = 0; i < pattern.length(); i++) { - int index = ALLOWED_REGEX_CHARS.indexOf(pattern.charAt(i)); - if (index < 0) { - return null; - } - copy.append(ALLOWED_REGEX_CHARS.charAt(index)); - } - return copy.toString(); - } - - private static boolean isCatastrophic(String pattern) { - boolean[] groupHasQuantifier = new boolean[pattern.length() + 1]; - int depth = 0; - boolean prevWasQuantifier = false; - boolean prevWasGroup = false; - boolean prevGroupHadQuantifier = false; - for (int i = 0; i < pattern.length(); i++) { - char c = pattern.charAt(i); - if (c == '\\') { - if (i + 1 >= pattern.length()) { - return true; - } - char escaped = pattern.charAt(++i); - if (escaped >= '1' && escaped <= '9') { - return true; - } - prevWasQuantifier = false; - prevWasGroup = false; - continue; - } - if (c == '(') { - if (i + 1 < pattern.length() && pattern.charAt(i + 1) == '?') { - i++; - if (i + 1 < pattern.length()) { - char flag = pattern.charAt(i + 1); - if (flag == ':' || flag == '=' || flag == '!') { - i++; - } - } - } - if (++depth >= groupHasQuantifier.length) { - return true; - } - groupHasQuantifier[depth] = false; - prevWasQuantifier = false; - prevWasGroup = false; - continue; - } - if (c == ')') { - if (depth <= 0) { - return true; - } - boolean closedHadQuantifier = groupHasQuantifier[depth]; - depth--; - if (closedHadQuantifier && depth > 0) { - groupHasQuantifier[depth] = true; - } - prevGroupHadQuantifier = closedHadQuantifier; - prevWasGroup = true; - prevWasQuantifier = false; - continue; - } - if (c == '?' && prevWasQuantifier) { - prevWasQuantifier = false; - continue; - } - if (c == '*' || c == '+' || c == '?' || c == '{') { - if (prevWasQuantifier || (prevWasGroup && prevGroupHadQuantifier)) { - return true; - } - if (c == '{') { - int end = pattern.indexOf('}', i); - if (end < 0) { - return true; - } - i = end; - } - if (depth > 0) { - groupHasQuantifier[depth] = true; - } - prevWasQuantifier = true; - prevWasGroup = false; - continue; - } - prevWasQuantifier = false; - prevWasGroup = false; - } - return false; - } - public boolean isRegex() { return regexPattern != null; } public String getValue() { return value; } public String getRegexPattern() { return regexPattern; } @@ -183,7 +79,7 @@ public boolean matches(String actual) { return false; } if (regexPattern != null) { - return compiledRegex != null && compiledRegex.matcher(actual).matches(); + return compiledRegex != null && compiledRegex.matcher(actual).find(); } return value != null && value.equals(actual); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index ca110cad3b..e215b060ed 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -13,6 +13,11 @@ import java.util.Collections; import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.logging.Handler; +import java.util.logging.Level; +import java.util.logging.LogRecord; +import java.util.logging.Logger; import static org.junit.jupiter.api.Assertions.*; @@ -149,19 +154,68 @@ void matchesValueNullActualNeverMatches() { } @Test - void unsafeRegexNeverMatchesAndDoesNotThrow() { - assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("(a+)+")); - assertFalse(CustomSampler.matchesValue( - SamplingConfig.MatchConfig.ofRegex("(a+)+"), "aaaa")); - assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("((a+))+")); - assertFalse(CustomSampler.matchesValue( - SamplingConfig.MatchConfig.ofRegex("((a+))+"), "aaaa")); - assertFalse(CustomSampler.matchesValue( - SamplingConfig.MatchConfig.ofRegex("("), "x")); + void regexMatchesSubstringLikeOtherSdks() { + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("health"), "GET /health-check")); + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("check$"), "health-check")); assertFalse(CustomSampler.matchesValue( - SamplingConfig.MatchConfig.ofRegex("a\\1"), "a")); + SamplingConfig.MatchConfig.ofRegex("^check"), "health-check")); + } + + @Test + void validRegexIsCompiledAsSent() { + // Constructs outside a character allowlist still compile and match. assertTrue(CustomSampler.matchesValue( - SamplingConfig.MatchConfig.ofRegex("health.*"), "health-check")); + SamplingConfig.MatchConfig.ofRegex("(?i)^HEALTH\\b"), "health check")); + assertTrue(CustomSampler.matchesValue( + SamplingConfig.MatchConfig.ofRegex("(a+)+b"), "aaab")); + } + + @Test + void invalidRegexIsSkippedWithWarning() { + Logger logger = Logger.getLogger(SamplingConfig.MatchConfig.class.getName()); + List records = new CopyOnWriteArrayList<>(); + Handler handler = new Handler() { + @Override public void publish(LogRecord record) { records.add(record); } + @Override public void flush() {} + @Override public void close() {} + }; + logger.addHandler(handler); + try { + SamplingConfig.MatchConfig invalid = + assertDoesNotThrow(() -> SamplingConfig.MatchConfig.ofRegex("(unclosed")); + assertFalse(CustomSampler.matchesValue(invalid, "(unclosed")); + } finally { + logger.removeHandler(handler); + } + assertEquals(1, records.size()); + assertEquals(Level.WARNING, records.get(0).getLevel()); + assertTrue(records.get(0).getMessage().contains("(unclosed")); + } + + @Test + void invalidRegexRuleIsSkippedAndOtherRulesStillApply() { + SamplingConfig config = new SamplingConfig( + List.of( + new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofRegex("[broken"), + Collections.emptyList(), + Collections.emptyList(), + 0), + new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofRegex("health"), + Collections.emptyList(), + Collections.emptyList(), + 0) + ), + Collections.emptyList() + ); + CustomSampler sampler = new CustomSampler(); + sampler.setConfig(config); + + assertTrue(sampler.sampleSpan(createTestSpan("[broken", Attributes.empty())).isSampled()); + assertFalse(sampler.sampleSpan(createTestSpan("health-check", Attributes.empty())).isSampled()); } @Test From b5c6e229fb342d7109e85e20e0c83983898e2024 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 15:20:07 +0000 Subject: [PATCH 19/47] fix: record flag evaluations on the plugin's tracer and cache instruments The upstream TracingHook resolves its tracer from GlobalOpenTelemetry on every evaluation. When the global is already owned (the OpenTelemetry Java agent, which also silently ignores GlobalOpenTelemetry.set, an application SDK, or a library that called GlobalOpenTelemetry.get() first) evaluation spans never reached LaunchDarkly. EvaluationTracingHook emits the same data through OtelManager's SDK instead, and the launchdarkly-java-server-sdk-otel dependency is gone. Metric instruments are cached by name in OtelManager, per provider, rather than rebuilt on each LDObserve call. Coverage: unit tests for a pre-claimed and an application-owned global, the e2e self-check now runs with the plugin, a claimed no-op and the Java agent owning the global, and CI smoke-tests the Spring Boot backend under the Java agent against a local collector. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .github/workflows/java-plugin-e2e.yml | 10 ++ e2e/java-plugin-spring-boot/.gitignore | 1 + e2e/java-plugin-spring-boot/Makefile | 9 +- e2e/java-plugin-spring-boot/README.md | 12 ++ e2e/java-plugin-spring-boot/build.gradle | 15 ++ .../scripts/javaagent_smoke.py | 164 ++++++++++++++++++ e2e/java-plugin/Makefile | 10 +- e2e/java-plugin/README.md | 10 +- e2e/java-plugin/build.gradle | 36 ++++ .../observability/example/PluginExample.java | 78 ++++++++- .../observability-java/README.md | 8 +- .../observability-java/lib/build.gradle | 3 - .../launchdarkly/observability/LDObserve.java | 21 +-- .../observability/ObservabilityPlugin.java | 8 +- .../internal/EvaluationTracingHook.java | 96 ++++++++++ .../observability/internal/OtelManager.java | 78 ++++++++- .../ObservabilityPluginTest.java | 6 +- .../internal/OtelManagerTest.java | 19 ++ .../internal/PluginUserFlowTest.java | 120 ++++++++++++- 19 files changed, 653 insertions(+), 51 deletions(-) create mode 100755 e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py create mode 100644 sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/EvaluationTracingHook.java diff --git a/.github/workflows/java-plugin-e2e.yml b/.github/workflows/java-plugin-e2e.yml index 75b4b60c7f..789f4eaf1f 100644 --- a/.github/workflows/java-plugin-e2e.yml +++ b/.github/workflows/java-plugin-e2e.yml @@ -39,6 +39,8 @@ jobs: java-version: 21 cache: 'gradle' + # Runs once per owner of GlobalOpenTelemetry: the plugin, a no-op + # claimed before the client starts, and the Java agent. - name: Run the self-checking example run: make run @@ -75,6 +77,14 @@ jobs: grep -q "Closing LaunchDarkly Client" app.log || { echo "client did not close on shutdown"; cat app.log; exit 1; } echo "Spring Boot backend OK" + # The OpenTelemetry Java agent owns GlobalOpenTelemetry here, as + # it does in many production services. Flag evaluations and + # request spans must still reach the plugin's exporter, checked + # against a local collector. + - name: Smoke-test the Spring Boot backend under the Java agent + working-directory: ./e2e/java-plugin-spring-boot + run: make javaagent-smoke + - name: Build the dockerized Spring Boot backend working-directory: . run: docker build -f e2e/java-plugin-spring-boot/Dockerfile -t e2e-java . diff --git a/e2e/java-plugin-spring-boot/.gitignore b/e2e/java-plugin-spring-boot/.gitignore index f8b92c3aa0..d8fe6f5978 100644 --- a/e2e/java-plugin-spring-boot/.gitignore +++ b/e2e/java-plugin-spring-boot/.gitignore @@ -1,2 +1,3 @@ .gradle build +app-javaagent.log diff --git a/e2e/java-plugin-spring-boot/Makefile b/e2e/java-plugin-spring-boot/Makefile index c0373906d4..4ce400ffd2 100644 --- a/e2e/java-plugin-spring-boot/Makefile +++ b/e2e/java-plugin-spring-boot/Makefile @@ -1,4 +1,4 @@ -.PHONY: build run test consumer-check +.PHONY: build run test javaagent-smoke consumer-check SDK_DIR := ../../sdk/@launchdarkly/observability-java SDK_GRADLE := $(SDK_DIR)/gradlew @@ -17,6 +17,13 @@ run: test: $(SDK_GRADLE) -p $(CURDIR) check $(GRADLE_ARGS) +# Runs the jar under the OpenTelemetry Java agent, which owns +# GlobalOpenTelemetry, and checks that flag evaluations still reach the +# plugin's exporter (a local collector). +javaagent-smoke: + $(SDK_GRADLE) -p $(CURDIR) bootJar javaagentJar $(GRADLE_ARGS) + python3 scripts/javaagent_smoke.py build/libs/java-plugin-spring-boot-example.jar build/agent/opentelemetry-javaagent.jar + # Publishes the plugin to ~/.m2 and builds the app against that artifact. consumer-check: cd $(SDK_DIR) && ./gradlew :lib:publishToMavenLocal $(GRADLE_ARGS) diff --git a/e2e/java-plugin-spring-boot/README.md b/e2e/java-plugin-spring-boot/README.md index 540fa7196a..058455648f 100644 --- a/e2e/java-plugin-spring-boot/README.md +++ b/e2e/java-plugin-spring-boot/README.md @@ -48,6 +48,18 @@ Environment the app honours: runs the tests plus a guard that fails if the plugin leaks OkHttp, Okio or Kotlin onto the application's classpath. +## Under the OpenTelemetry Java agent + +```bash +make javaagent-smoke +``` + +Runs the jar with the OpenTelemetry Java agent attached, so the agent owns +`GlobalOpenTelemetry`, and drives the routes against a local collector. It +fails unless the evaluation spans and the request spans with their +`feature_flag` events reach the plugin's exporter. CI runs it on every change +to the plugin. + ## Docker The image is built from the repository root so the plugin can be compiled diff --git a/e2e/java-plugin-spring-boot/build.gradle b/e2e/java-plugin-spring-boot/build.gradle index f0f145cc0b..0a6cc7fa09 100644 --- a/e2e/java-plugin-spring-boot/build.gradle +++ b/e2e/java-plugin-spring-boot/build.gradle @@ -25,6 +25,10 @@ def sdkProperties = new Properties() file('../../sdk/@launchdarkly/observability-java/gradle.properties').withInputStream { sdkProperties.load(it) } def pluginVersion = sdkProperties.getProperty('version') +configurations { + javaagent +} + dependencies { implementation 'org.springframework.boot:spring-boot-starter-web' implementation 'org.springframework.boot:spring-boot-starter-actuator' @@ -34,6 +38,17 @@ dependencies { // through the plugin's compile-scoped dependency. testImplementation 'org.springframework.boot:spring-boot-starter-test' + + // Agent release that ships the OpenTelemetry SDK version the plugin uses. + javaagent 'io.opentelemetry.javaagent:opentelemetry-javaagent:2.17.0' +} + +// Copies the OpenTelemetry Java agent to build/agent/opentelemetry-javaagent.jar +// for `make javaagent-smoke`. +tasks.register('javaagentJar', Copy) { + from configurations.javaagent + into layout.buildDirectory.dir('agent') + rename { 'opentelemetry-javaagent.jar' } } tasks.named('test') { diff --git a/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py b/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py new file mode 100755 index 0000000000..4d941f2b7f --- /dev/null +++ b/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py @@ -0,0 +1,164 @@ +#!/usr/bin/env python3 +"""Runs the Spring Boot backend under the OpenTelemetry Java agent and checks +that flag evaluations still reach the plugin's OTLP exporter. + +The agent owns GlobalOpenTelemetry and ignores the plugin's attempt to +register its SDK as the global. A local collector stands in for LaunchDarkly; the agent's own +exporters are switched off so everything it receives came from the plugin. + +Usage: javaagent_smoke.py +""" + +import gzip +import http.server +import os +import signal +import socket +import struct +import subprocess +import sys +import threading +import time +import urllib.request + +LOOPBACK = socket.inet_ntoa(struct.pack("!I", socket.INADDR_LOOPBACK)) +TRACES = [] +SAMPLING_QUERIES = [] + + +class Collector(http.server.BaseHTTPRequestHandler): + def do_POST(self): + body = self.rfile.read(int(self.headers.get("Content-Length", "0"))) + if "gzip" in (self.headers.get("Content-Encoding") or ""): + body = gzip.decompress(body) + if self.path.startswith("/v1/traces"): + TRACES.append(body) + elif self.path.startswith("/sampling"): + SAMPLING_QUERIES.append(body) + reply = b'{"data":{"sampling":{"spans":[],"logs":[]}}}' if self.path.startswith("/sampling") else b"" + self.send_response(200) + self.send_header("Content-Length", str(len(reply))) + self.end_headers() + self.wfile.write(reply) + + def log_message(self, *args): + pass + + +def free_port(): + with socket.socket() as s: + s.bind((LOOPBACK, 0)) + return s.getsockname()[1] + + +def get(url): + try: + with urllib.request.urlopen(url, timeout=5) as response: + return response.status + except urllib.error.HTTPError as e: + return e.code + except OSError: + return None + + +def traces_contain(*needles): + return any(all(n in payload for n in needles) for payload in list(TRACES)) + + +def main(): + app_jar, agent_jar = sys.argv[1], sys.argv[2] + collector = http.server.ThreadingHTTPServer((LOOPBACK, 0), Collector) + threading.Thread(target=collector.serve_forever, daemon=True).start() + collector_url = "http://%s:%d" % (LOOPBACK, collector.server_address[1]) + app_url = "http://%s:%d" % (LOOPBACK, free_port()) + + env = dict(os.environ) + env.pop("LAUNCHDARKLY_SDK_KEY", None) + env.update({ + "PORT": app_url.rsplit(":", 1)[1], + "OTEL_EXPORTER_OTLP_ENDPOINT": collector_url, + "LD_OBSERVABILITY_BACKEND_URL": collector_url + "/sampling", + }) + command = [ + "java", + "-javaagent:" + agent_jar, + # The agent also reads OTEL_EXPORTER_OTLP_ENDPOINT; keep its own + # exporters off so only the plugin's data reaches the collector. + "-Dotel.traces.exporter=none", + "-Dotel.metrics.exporter=none", + "-Dotel.logs.exporter=none", + "-jar", app_jar, + ] + log_path = "app-javaagent.log" + failures = [] + with open(log_path, "wb") as log: + app = subprocess.Popen(command, env=env, stdout=log, stderr=subprocess.STDOUT) + try: + for _ in range(120): + if get(app_url + "/actuator/health") == 200: + break + if app.poll() is not None: + failures.append("app exited early with %s" % app.returncode) + break + time.sleep(1) + else: + failures.append("app did not become healthy") + + if not failures: + for path in ("/", "/rolldice", "/flags/example-greeting"): + if get(app_url + path) != 200: + failures.append("GET %s did not answer 200" % path) + if get(app_url + "/error") != 500: + failures.append("GET /error did not answer 500") + + # BatchSpanProcessor exports every second. + deadline = time.time() + 20 + while time.time() < deadline and not ( + traces_contain(b"LDClient.boolVariation", b"example-greeting") + and traces_contain(b"LDClient.intVariation", b"dice-sides") + and traces_contain(b"LDClient.jsonValueVariation", b"example-greeting") + ): + time.sleep(0.5) + for method, flag in ( + (b"LDClient.boolVariation", b"example-greeting"), + (b"LDClient.intVariation", b"dice-sides"), + (b"LDClient.jsonValueVariation", b"example-greeting"), + ): + if not traces_contain(method, flag): + failures.append("evaluation span %s for %s did not reach the plugin exporter" + % (method.decode(), flag.decode())) + if not traces_contain(b"feature_flag", b"GET /rolldice"): + failures.append("request span with a feature_flag event did not reach the plugin exporter") + if not SAMPLING_QUERIES: + failures.append("plugin did not fetch sampling config") + finally: + if app.poll() is None: + app.send_signal(signal.SIGTERM) + try: + app.wait(timeout=30) + except subprocess.TimeoutExpired: + app.kill() + failures.append("app did not stop on SIGTERM") + collector.shutdown() + + with open(log_path, "rb") as log: + output = log.read() + # The agent logs its version on startup. It also turns the plugin's + # GlobalOpenTelemetry.set() into a silent no-op, so the plugin never + # becomes the global in this run. + if b"opentelemetry-javaagent - version" not in output: + failures.append("the OpenTelemetry Java agent did not start") + if b"Closing LaunchDarkly Client" not in output: + failures.append("client did not close on shutdown") + + if failures: + sys.stdout.write(output.decode("utf-8", "replace")) + for failure in failures: + print("FAIL " + failure) + return 1 + print("Spring Boot backend under the Java agent OK: %d trace exports" % len(TRACES)) + return 0 + + +if __name__ == "__main__": + sys.exit(main()) diff --git a/e2e/java-plugin/Makefile b/e2e/java-plugin/Makefile index 2cf591dd2c..b50f6e502d 100644 --- a/e2e/java-plugin/Makefile +++ b/e2e/java-plugin/Makefile @@ -4,13 +4,17 @@ SDK_DIR := ../../sdk/@launchdarkly/observability-java SDK_GRADLE := $(SDK_DIR)/gradlew GRADLE_ARGS := --no-daemon --console=plain -# Self-checking example against the plugin sources in this repository. +# Self-checking example against the plugin sources in this repository, once +# per owner of GlobalOpenTelemetry: the plugin, a no-op claimed before the +# client starts, and the OpenTelemetry Java agent. +RUN_TASKS := run runClaimedGlobal runWithJavaAgent + run check: - $(SDK_GRADLE) -p $(CURDIR) run $(GRADLE_ARGS) + $(SDK_GRADLE) -p $(CURDIR) $(RUN_TASKS) $(GRADLE_ARGS) # Publishes the plugin to ~/.m2 and builds this example against that # artifact, the way an application would. Catches POM scope mistakes and # transitive dependency leaks that the composite build hides. consumer-check: cd $(SDK_DIR) && ./gradlew :lib:publishToMavenLocal $(GRADLE_ARGS) - $(SDK_GRADLE) -p $(CURDIR) check run $(GRADLE_ARGS) -PuseMavenLocal + $(SDK_GRADLE) -p $(CURDIR) check $(RUN_TASKS) $(GRADLE_ARGS) -PuseMavenLocal diff --git a/e2e/java-plugin/README.md b/e2e/java-plugin/README.md index c120717315..3806a44000 100644 --- a/e2e/java-plugin/README.md +++ b/e2e/java-plugin/README.md @@ -15,8 +15,14 @@ For a web backend that uses the plugin the way a service does, see make run ``` -A passing run prints one `RESULT` line. `checkout-enabled` is the -flag-evaluation span from `TracingHook`. `kept-checkout` is kept by the +`make run` runs the check three times, once per owner of +`GlobalOpenTelemetry`: the plugin (`run`), a no-op claimed by +`GlobalOpenTelemetry.get()` before the client starts (`runClaimedGlobal`), and +the OpenTelemetry Java agent (`runWithJavaAgent`). The flag evaluation must +reach the plugin's exporter in all three. + +Each passing run prints one `RESULT` line. `checkout-enabled` is the +flag-evaluation span from the plugin's tracing hook. `kept-checkout` is kept by the sampling rule and carries `launchdarkly.sampling.ratio`. `health-check` is dropped. A call to `LDObserve` before the client starts must not install the OpenTelemetry no-op global; the flag span only arrives when the hook is on the diff --git a/e2e/java-plugin/build.gradle b/e2e/java-plugin/build.gradle index d272e88ac3..06d077c171 100644 --- a/e2e/java-plugin/build.gradle +++ b/e2e/java-plugin/build.gradle @@ -22,17 +22,53 @@ def sdkProperties = new Properties() file('../../sdk/@launchdarkly/observability-java/gradle.properties').withInputStream { sdkProperties.load(it) } def pluginVersion = sdkProperties.getProperty('version') +configurations { + javaagent +} + dependencies { implementation "com.launchdarkly:launchdarkly-java-server-sdk-observability:${pluginVersion}" implementation 'com.launchdarkly:launchdarkly-java-server-sdk:7.12.0' // No explicit opentelemetry-api: the example uses Attributes and Severity, // which must arrive through the plugin's compile-scoped dependency. + + // Agent release that ships the OpenTelemetry SDK version the plugin uses. + javaagent 'io.opentelemetry.javaagent:opentelemetry-javaagent:2.17.0' } application { mainClass = 'com.launchdarkly.observability.example.PluginExample' } +// The plugin must export flag evaluations whoever owns GlobalOpenTelemetry. +// `run` is the plain case where the plugin registers its SDK as the global; +// these cover the global being claimed first and the Java agent owning it. +tasks.register('runClaimedGlobal', JavaExec) { + group = 'verification' + description = 'Runs the self-check with GlobalOpenTelemetry claimed before the client starts.' + classpath = sourceSets.main.runtimeClasspath + mainClass = application.mainClass + args 'claimed-global' +} + +tasks.register('runWithJavaAgent', JavaExec) { + group = 'verification' + description = 'Runs the self-check under the OpenTelemetry Java agent.' + classpath = sourceSets.main.runtimeClasspath + mainClass = application.mainClass + args 'javaagent' + def agent = configurations.javaagent + inputs.files(agent) + doFirst { + jvmArgs "-javaagent:${agent.singleFile}", + // The agent's own exporters have no collector here. + '-Dotel.traces.exporter=none', + '-Dotel.metrics.exporter=none', + '-Dotel.logs.exporter=none', + '-Dotel.javaagent.logging=none' + } +} + // Groups that must never reach a consumer's runtime classpath through the plugin. def forbiddenRuntimeGroups = ['com.squareup.okhttp3', 'com.squareup.okio', 'org.jetbrains.kotlin', 'org.jetbrains.kotlinx'] diff --git a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java index c69448182d..5cb78a7216 100644 --- a/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java +++ b/e2e/java-plugin/src/main/java/com/launchdarkly/observability/example/PluginExample.java @@ -12,9 +12,12 @@ import io.opentelemetry.api.GlobalOpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.context.Scope; import java.io.ByteArrayInputStream; import java.io.IOException; +import java.lang.management.ManagementFactory; import java.net.InetAddress; import java.net.InetSocketAddress; import java.nio.charset.StandardCharsets; @@ -27,6 +30,18 @@ /** * Runs the Java observability plugin against a local collector and exits * non-zero when a required signal is missing. + * + *

The first argument picks who owns {@code GlobalOpenTelemetry}:

+ *
    + *
  • {@code plugin} (default): nothing else claims it, so the plugin + * registers its SDK as the global.
    • + *
  • {@code claimed-global}: {@code GlobalOpenTelemetry.get()} runs before + * the client is built, as a library would, locking the global onto a + * no-op.
    • + *
  • {@code javaagent}: the OpenTelemetry Java agent owns the global and + * the evaluation runs inside an agent span.
    • + *
+ *

In every mode the flag evaluation must reach the plugin's exporter.

*/ public final class PluginExample { private static final String SAMPLING_RESPONSE = @@ -40,14 +55,36 @@ public final class PluginExample { private final List failures = new ArrayList<>(); public static void main(String[] args) throws Exception { - int status = new PluginExample().run(); + String mode = args.length > 0 ? args[0] : "plugin"; + int status = new PluginExample().run(mode); if (status != 0) { System.exit(status); } } - private int run() throws Exception { - GlobalOpenTelemetry.resetForTest(); + private int run(String mode) throws Exception { + boolean agentAttached = ManagementFactory.getRuntimeMXBean().getInputArguments().stream() + .anyMatch(arg -> arg.startsWith("-javaagent:")); + switch (mode) { + case "plugin": + case "claimed-global": + if (agentAttached) { + failures.add("mode " + mode + " must run without -javaagent"); + } + break; + case "javaagent": + if (!agentAttached) { + failures.add("mode javaagent needs -javaagent on the command line"); + } + break; + default: + System.err.println("unknown mode " + mode + "; expected plugin, claimed-global or javaagent"); + return 2; + } + if (mode.equals("claimed-global")) { + GlobalOpenTelemetry.get(); + } + LDObserve.startSpan("before-init", Attributes.empty()).end(); LDObserve.recordLog("before init", Severity.INFO, Attributes.empty()); @@ -89,7 +126,20 @@ private int run() throws Exception { failures.add("plugin did not fetch sampling config"); } - client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + String global = globalOwner(); + String expectedGlobal = mode.equals("plugin") ? "plugin" : mode.equals("javaagent") ? "agent" : "noop"; + if (!global.equals(expectedGlobal)) { + failures.add("GlobalOpenTelemetry is owned by " + global + ", expected " + expectedGlobal); + } + + // Evaluate inside a span from the global, as instrumented request + // handling would. Under the agent that is an agent span. + Span request = GlobalOpenTelemetry.getTracer("example").spanBuilder("GET /checkout").startSpan(); + try (Scope ignored = request.makeCurrent()) { + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + } finally { + request.end(); + } LDObserve.flush(); boolean flagArrived = contains(traces, 0, "checkout-enabled"); @@ -114,7 +164,8 @@ private int run() throws Exception { } if (!flagArrived) { - failures.add("flag evaluation span checkout-enabled did not arrive; the tracing hook is not on the plugin exporters"); + failures.add("flag evaluation span checkout-enabled did not arrive with the global owned by " + global + + "; the tracing hook is not on the plugin exporters"); } if (!kept) { failures.add("kept span kept-checkout did not arrive"); @@ -130,11 +181,12 @@ private int run() throws Exception { } System.out.println("RESULT" + + " mode=" + mode + " flag-evaluation=" + (flagArrived ? "checkout-enabled" : "missing") + " kept=" + (kept ? "kept-checkout" : "missing") + " dropped=" + (dropped ? "health-check" : "still-exported") + " sampling-ratio=" + (ratioArrived ? "present" : "missing") - + " global=" + (flagArrived ? "sdk" : "noop")); + + " global=" + global); } finally { LDObserve.shutdown(); server.stop(0); @@ -149,6 +201,20 @@ private int run() throws Exception { return 0; } + /** + * Reports who owns GlobalOpenTelemetry: "noop" when its spans are + * invalid, "agent" when the Java agent bridges it, otherwise "plugin". + */ + private static String globalOwner() { + Span probe = GlobalOpenTelemetry.getTracer("example").spanBuilder("global-probe").startSpan(); + boolean recording = probe.getSpanContext().isValid(); + probe.end(); + if (!recording) { + return "noop"; + } + return GlobalOpenTelemetry.get().getClass().getName().contains("javaagent") ? "agent" : "plugin"; + } + private boolean waitForSamplingQuery() throws InterruptedException { for (int i = 0; i < 50 && samplingQueries.isEmpty(); i++) { Thread.sleep(100); diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 675510e0f8..06aa8eb59e 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -67,8 +67,12 @@ LDClient client = new LDClient("YOUR_SDK_KEY", config); The plugin automatically: 1. Sets up OpenTelemetry TracerProvider, LoggerProvider, and MeterProvider with OTLP HTTP exporters pointed at the LaunchDarkly observability backend. -2. Registers a `TracingHook` that adds span events for each flag evaluation, enabling guarded rollouts and observability. -3. Fetches sampling configuration from the backend to control telemetry volume. +2. Registers a tracing hook that records a span for each flag evaluation and adds a `feature_flag` event to the current span, enabling guarded rollouts and observability. +3. Fetches sampling configuration from the backend to control telemetry volume. Regex rules match anywhere in the value, as in the other SDKs; a rule whose pattern does not compile is skipped with a warning. + +### Running alongside other OpenTelemetry setups + +The plugin registers its SDK as `GlobalOpenTelemetry` when it can. When the global is already taken (the OpenTelemetry Java agent, your own SDK, a library that called `GlobalOpenTelemetry.get()` first, or `manualStart(true)` after such a call), the plugin keeps its own providers. Evaluation spans and everything sent through `LDObserve` still go to LaunchDarkly. The `feature_flag` event is added to whichever span is current, so it is exported by whoever owns that span. ## Manual Instrumentation diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index 16d2fe4f09..69a10e863f 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -24,9 +24,6 @@ dependencies { // LaunchDarkly SDK - compileOnly so users provide their own version compileOnly "com.launchdarkly:launchdarkly-java-server-sdk:${ldServerSdkVersion}" - // LaunchDarkly OTel tracing hook - implementation 'com.launchdarkly:launchdarkly-java-server-sdk-otel:0.2.0' - // The public API (LDObserve, ObservabilityOptions) takes OpenTelemetry API // types such as Attributes and Severity, so consumers must compile against // it. 'api' publishes it with compile scope in the POM. diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index 93be5a623f..5a19fa1a0d 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -5,11 +5,6 @@ import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Logger; import io.opentelemetry.api.logs.Severity; -import io.opentelemetry.api.metrics.DoubleGauge; -import io.opentelemetry.api.metrics.DoubleHistogram; -import io.opentelemetry.api.metrics.LongCounter; -import io.opentelemetry.api.metrics.LongUpDownCounter; -import io.opentelemetry.api.metrics.Meter; import io.opentelemetry.api.trace.Span; import io.opentelemetry.api.trace.StatusCode; import io.opentelemetry.api.trace.Tracer; @@ -30,18 +25,14 @@ private LDObserve() {} * Records a gauge metric. */ public static void recordMetric(String name, double value, Attributes attributes) { - Meter meter = OtelManager.getMeter(); - DoubleGauge gauge = meter.gaugeBuilder(name).build(); - gauge.set(value, attributes); + OtelManager.getGauge(name).set(value, attributes); } /** * Records a counter metric. */ public static void recordCount(String name, long value, Attributes attributes) { - Meter meter = OtelManager.getMeter(); - LongCounter counter = meter.counterBuilder(name).build(); - counter.add(value, attributes); + OtelManager.getCounter(name).add(value, attributes); } /** @@ -55,18 +46,14 @@ public static void recordIncr(String name, Attributes attributes) { * Records a histogram metric. */ public static void recordHistogram(String name, double value, Attributes attributes) { - Meter meter = OtelManager.getMeter(); - DoubleHistogram histogram = meter.histogramBuilder(name).build(); - histogram.record(value, attributes); + OtelManager.getHistogram(name).record(value, attributes); } /** * Records an up/down counter metric. */ public static void recordUpDownCounter(String name, long value, Attributes attributes) { - Meter meter = OtelManager.getMeter(); - LongUpDownCounter counter = meter.upDownCounterBuilder(name).build(); - counter.add(value, attributes); + OtelManager.getUpDownCounter(name).add(value, attributes); } /** diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java index 70cbd99db4..31239e49db 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -1,6 +1,6 @@ package com.launchdarkly.observability; -import com.launchdarkly.integrations.TracingHook; +import com.launchdarkly.observability.internal.EvaluationTracingHook; import com.launchdarkly.observability.internal.GraphQLClient; import com.launchdarkly.observability.internal.OtelManager; import com.launchdarkly.observability.internal.SamplingApiService; @@ -112,10 +112,6 @@ public List getHooks(EnvironmentMetadata metadata) { if (!options.isEnabled()) { return Collections.emptyList(); } - TracingHook hook = new TracingHook.Builder() - .withSpans() - .withValue() - .build(); - return Collections.singletonList(hook); + return Collections.singletonList(new EvaluationTracingHook(true, true)); } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/EvaluationTracingHook.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/EvaluationTracingHook.java new file mode 100644 index 0000000000..8fe6b91b67 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/EvaluationTracingHook.java @@ -0,0 +1,96 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.sdk.EvaluationDetail; +import com.launchdarkly.sdk.LDValue; +import com.launchdarkly.sdk.server.integrations.EvaluationSeriesContext; +import com.launchdarkly.sdk.server.integrations.Hook; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.common.AttributesBuilder; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.context.Context; + +import java.util.HashMap; +import java.util.Map; + +/** + * Records flag evaluations on the plugin's own tracer. + * + *

Emits the same data as {@code TracingHook} from + * {@code launchdarkly-java-server-sdk-otel}: a span per evaluation and a + * {@code feature_flag} event on the caller's current span. That hook resolves + * its tracer from {@code GlobalOpenTelemetry} on every evaluation, so when the + * global is already claimed (the OpenTelemetry Java agent, a library calling + * {@code GlobalOpenTelemetry.get()} first, or manual start) its spans never + * reach LaunchDarkly. This hook asks {@link OtelManager} instead, which always + * holds the plugin's SDK whether or not it is also the global.

+ */ +public final class EvaluationTracingHook extends Hook { + static final String HOOK_NAME = "LaunchDarkly Tracing Hook"; + static final String INSTRUMENTATION_NAME = "launchdarkly-client"; + static final String DATA_KEY_SPAN = "variationSpan"; + static final String EVENT_NAME = "feature_flag"; + + static final String PROVIDER_NAME = "LaunchDarkly"; + static final String FEATURE_FLAG_PROVIDER_NAME = "feature_flag.provider.name"; + static final String FEATURE_FLAG_KEY = "feature_flag.key"; + static final String FEATURE_FLAG_VALUE = "feature_flag.result.value"; + static final String FEATURE_FLAG_CONTEXT_ID = "feature_flag.context.id"; + static final String FEATURE_FLAG_VARIATION_INDEX = "feature_flag.result.variationIndex"; + static final String FEATURE_FLAG_IN_EXPERIMENT = "feature_flag.result.reason.inExperiment"; + + private final boolean withSpans; + private final boolean withValue; + + public EvaluationTracingHook(boolean withSpans, boolean withValue) { + super(HOOK_NAME); + this.withSpans = withSpans; + this.withValue = withValue; + } + + @Override + public Map beforeEvaluation(EvaluationSeriesContext seriesContext, Map data) { + if (!withSpans) { + return data; + } + Span span = OtelManager.getTracer(INSTRUMENTATION_NAME) + .spanBuilder(seriesContext.method) + .setParent(Context.current()) + .setAllAttributes(baseAttributes(seriesContext).build()) + .startSpan(); + Map next = new HashMap<>(data); + next.put(DATA_KEY_SPAN, span); + return next; + } + + @Override + public Map afterEvaluation( + EvaluationSeriesContext seriesContext, + Map data, + EvaluationDetail detail + ) { + Object span = data.get(DATA_KEY_SPAN); + if (span instanceof Span) { + ((Span) span).end(); + } + + AttributesBuilder attributes = baseAttributes(seriesContext); + if (withValue) { + attributes.put(FEATURE_FLAG_VALUE, detail.getValue().toJsonString()); + } + if (detail.getReason() != null && detail.getReason().isInExperiment()) { + attributes.put(FEATURE_FLAG_IN_EXPERIMENT, true); + } + if (detail.getVariationIndex() != EvaluationDetail.NO_VARIATION) { + attributes.put(FEATURE_FLAG_VARIATION_INDEX, (long) detail.getVariationIndex()); + } + Span.current().addEvent(EVENT_NAME, attributes.build()); + return data; + } + + private static AttributesBuilder baseAttributes(EvaluationSeriesContext seriesContext) { + return Attributes.builder() + .put(FEATURE_FLAG_KEY, seriesContext.flagKey) + .put(FEATURE_FLAG_PROVIDER_NAME, PROVIDER_NAME) + .put(FEATURE_FLAG_CONTEXT_ID, seriesContext.context.getFullyQualifiedKey()); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 2b9772f96a..362b8f08cb 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -9,6 +9,10 @@ import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.metrics.DoubleGauge; +import io.opentelemetry.api.metrics.DoubleHistogram; +import io.opentelemetry.api.metrics.LongCounter; +import io.opentelemetry.api.metrics.LongUpDownCounter; import io.opentelemetry.api.metrics.Meter; import io.opentelemetry.api.trace.Tracer; import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator; @@ -32,9 +36,9 @@ import java.time.Duration; import java.util.Map; +import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; -import java.util.logging.Level; /** * Manages OpenTelemetry provider setup and lifecycle for LaunchDarkly Observability. @@ -58,6 +62,13 @@ public final class OtelManager { private final Meter meter; private final CustomSampler customSampler; + // Instruments are cached by name so recording a metric does not run the + // SDK's builder and registration lookup on every call. + private final Map gauges = new ConcurrentHashMap<>(); + private final Map counters = new ConcurrentHashMap<>(); + private final Map histograms = new ConcurrentHashMap<>(); + private final Map upDownCounters = new ConcurrentHashMap<>(); + private OtelManager( SdkTracerProvider tracerProvider, SdkLoggerProvider loggerProvider, @@ -193,11 +204,13 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { .setPropagators(ContextPropagators.create(propagator)) .buildAndRegisterGlobal(); } catch (IllegalStateException e) { - // GlobalOpenTelemetry was already set (e.g., by user's own config). - // Build without registering globally; TracingHook will use whatever - // is globally registered. - log.log(Level.WARNING, - "GlobalOpenTelemetry already set. Building SDK without global registration.", e); + // GlobalOpenTelemetry was already set (the OTel Java agent, the + // application's own SDK, or a library that called + // GlobalOpenTelemetry.get() first). Build without registering + // globally. LDObserve and EvaluationTracingHook use this SDK + // through OtelManager, so they keep exporting to LaunchDarkly. + log.warning("GlobalOpenTelemetry already set. Building SDK without global registration;" + + " LaunchDarkly telemetry is still exported through the plugin's own providers."); sdk = OpenTelemetrySdk.builder() .setTracerProvider(tracerProvider) .setLoggerProvider(loggerProvider) @@ -237,10 +250,22 @@ public static Tracer getTracer() { } // OpenTelemetry.noop() does not install a process-wide global. Calling // GlobalOpenTelemetry.getTracer before init would lock the JVM onto a - // no-op, and TracingHook would never see the plugin's exporters. + // no-op for everything else in the process. return OpenTelemetry.noop().getTracer(Constants.INSTRUMENTATION_SCOPE_NAME); } + /** + * Returns a tracer from the plugin's own SDK under another + * instrumentation scope, whether or not that SDK is also the global. + */ + public static Tracer getTracer(String instrumentationScopeName) { + OtelManager manager = INSTANCE.get(); + if (manager != null) { + return manager.openTelemetrySdk.getTracer(instrumentationScopeName); + } + return OpenTelemetry.noop().getTracer(instrumentationScopeName); + } + public static Logger getLogger() { OtelManager manager = INSTANCE.get(); if (manager != null) { @@ -257,6 +282,45 @@ public static Meter getMeter() { return OpenTelemetry.noop().getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); } + /** + * Returns the gauge with this name, built once per provider. Before + * initialization it is a no-op and is not cached. + */ + public static DoubleGauge getGauge(String name) { + OtelManager manager = INSTANCE.get(); + if (manager == null) { + return getMeter().gaugeBuilder(name).build(); + } + return manager.gauges.computeIfAbsent(name, n -> manager.meter.gaugeBuilder(n).build()); + } + + /** Returns the counter with this name; see {@link #getGauge}. */ + public static LongCounter getCounter(String name) { + OtelManager manager = INSTANCE.get(); + if (manager == null) { + return getMeter().counterBuilder(name).build(); + } + return manager.counters.computeIfAbsent(name, n -> manager.meter.counterBuilder(n).build()); + } + + /** Returns the histogram with this name; see {@link #getGauge}. */ + public static DoubleHistogram getHistogram(String name) { + OtelManager manager = INSTANCE.get(); + if (manager == null) { + return getMeter().histogramBuilder(name).build(); + } + return manager.histograms.computeIfAbsent(name, n -> manager.meter.histogramBuilder(n).build()); + } + + /** Returns the up/down counter with this name; see {@link #getGauge}. */ + public static LongUpDownCounter getUpDownCounter(String name) { + OtelManager manager = INSTANCE.get(); + if (manager == null) { + return getMeter().upDownCounterBuilder(name).build(); + } + return manager.upDownCounters.computeIfAbsent(name, n -> manager.meter.upDownCounterBuilder(n).build()); + } + /** * Flushes all pending telemetry data. */ diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java index f0c0f64f83..91e832d076 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java @@ -1,5 +1,6 @@ package com.launchdarkly.observability; +import com.launchdarkly.observability.internal.EvaluationTracingHook; import com.launchdarkly.sdk.server.integrations.Hook; import com.launchdarkly.sdk.server.integrations.PluginMetadata; import io.opentelemetry.api.common.AttributeKey; @@ -32,8 +33,9 @@ void getHooksReturnsTracingHook() { List hooks = plugin.getHooks(null); assertNotNull(hooks); assertEquals(1, hooks.size()); - // The hook should be a TracingHook instance - assertNotNull(hooks.get(0)); + // The plugin's own hook, so evaluations export even when another SDK + // owns GlobalOpenTelemetry. + assertInstanceOf(EvaluationTracingHook.class, hooks.get(0)); } @Test diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java index 33ff8337a1..c18f92f312 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java @@ -16,6 +16,8 @@ import java.util.concurrent.atomic.AtomicInteger; import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotSame; +import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertTrue; class OtelManagerTest { @@ -71,6 +73,23 @@ void concurrentInitializeBuildsOneManager() throws Exception { assertTrue(OtelManager.isInitialized()); } + @Test + void instrumentsAreCachedByNamePerProvider() { + OtelManager.initialize("sdk-test", options()); + + assertSame(OtelManager.getGauge("cpu"), OtelManager.getGauge("cpu")); + assertSame(OtelManager.getCounter("orders"), OtelManager.getCounter("orders")); + assertSame(OtelManager.getHistogram("latency"), OtelManager.getHistogram("latency")); + assertSame(OtelManager.getUpDownCounter("queue"), OtelManager.getUpDownCounter("queue")); + assertNotSame(OtelManager.getGauge("cpu"), OtelManager.getGauge("memory")); + + Object gaugeBeforeRestart = OtelManager.getGauge("cpu"); + OtelManager.shutdown(); + OtelManager.initialize("sdk-test", options()); + assertNotSame(gaugeBeforeRestart, OtelManager.getGauge("cpu"), + "a restarted provider must not reuse instruments from the old one"); + } + private static void assertEqualsZero(int failures) { assertTrue(failures == 0, "concurrent initialize failures: " + failures); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index fb37a5736f..b4d1a8d37c 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -11,8 +11,16 @@ import com.sun.net.httpserver.HttpServer; import io.opentelemetry.api.GlobalOpenTelemetry; import io.opentelemetry.api.OpenTelemetry; +import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.context.Scope; +import io.opentelemetry.sdk.OpenTelemetrySdk; +import io.opentelemetry.sdk.testing.exporter.InMemorySpanExporter; +import io.opentelemetry.sdk.trace.SdkTracerProvider; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor; import org.junit.jupiter.api.AfterEach; import org.junit.jupiter.api.Test; @@ -27,6 +35,7 @@ import java.util.concurrent.CopyOnWriteArrayList; import java.util.zip.GZIPInputStream; +import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertFalse; import static org.junit.jupiter.api.Assertions.assertNotSame; import static org.junit.jupiter.api.Assertions.assertTrue; @@ -43,6 +52,7 @@ class PluginUserFlowTest { private HttpServer server; private final List traces = new CopyOnWriteArrayList<>(); + private final List rawTraces = new CopyOnWriteArrayList<>(); private final List logs = new CopyOnWriteArrayList<>(); private final List metrics = new CopyOnWriteArrayList<>(); private final List samplingQueries = new CopyOnWriteArrayList<>(); @@ -140,6 +150,91 @@ void preInitCallDoesNotStickGlobalOnNoopAndLaterSpanExports() throws Exception { } } + @Test + void flagEvaluationExportsWhenGlobalWasClaimedFirst() throws Exception { + // A library that calls GlobalOpenTelemetry.get() before the LDClient is + // built locks the global onto a no-op, so the plugin cannot register. + GlobalOpenTelemetry.get(); + + startCollector(); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options(false))))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.flush(); + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation was not exported with a pre-claimed global: " + summarize(traces)); + assertTrue(payloadContains(traces, "feature_flag.key")); + } + } + + @Test + void flagEvaluationExportsUnderApplicationOwnedGlobal() throws Exception { + // The application (or the OpenTelemetry Java agent) owns the global. + InMemorySpanExporter appExporter = InMemorySpanExporter.create(); + SdkTracerProvider appTracerProvider = SdkTracerProvider.builder() + .addSpanProcessor(SimpleSpanProcessor.create(appExporter)) + .build(); + OpenTelemetrySdk appSdk = OpenTelemetrySdk.builder() + .setTracerProvider(appTracerProvider) + .buildAndRegisterGlobal(); + + startCollector(); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options(false))))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + Span request = appSdk.getTracer("app").spanBuilder("GET /checkout").startSpan(); + try (Scope ignored = request.makeCurrent()) { + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + } finally { + request.end(); + } + LDObserve.flush(); + + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation was not exported under an application-owned global: " + summarize(traces)); + assertTrue(rawPayloadContains(rawTraces, request.getSpanContext().getTraceIdBytes()), + "evaluation span is not in the application's trace"); + + // The feature_flag event still lands on the caller's current span. + List appSpans = appExporter.getFinishedSpanItems(); + assertEquals(1, appSpans.size()); + assertEquals(1, appSpans.get(0).getEvents().size()); + assertEquals("feature_flag", appSpans.get(0).getEvents().get(0).getName()); + assertEquals("checkout-enabled", appSpans.get(0).getEvents().get(0).getAttributes() + .get(AttributeKey.stringKey("feature_flag.key"))); + } finally { + appTracerProvider.shutdown(); + } + } + + @Test + void flagEvaluationExportsAfterManualStart() throws Exception { + startCollector(); + ObservabilityOptions options = options(true); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + LDObserve.start("sdk-test", options); + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.flush(); + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation was not exported after manual start: " + summarize(traces)); + } + } + private ObservabilityOptions options(boolean manualStart) { String base = "http".concat("://") + server.getAddress().getHostString() + ":" + server.getAddress().getPort(); return new ObservabilityOptions.Builder() @@ -159,7 +254,9 @@ private void startCollector() throws IOException { respond(exchange, 200, "application/json", SAMPLING_RESPONSE.getBytes(StandardCharsets.UTF_8)); }); server.createContext("/v1/traces", exchange -> { - traces.add(bodyAsString(exchange)); + byte[] body = bodyBytes(exchange); + rawTraces.add(body); + traces.add(new String(body, StandardCharsets.UTF_8)); respond(exchange, 200, "application/x-protobuf", new byte[0]); }); server.createContext("/v1/logs", exchange -> { @@ -229,7 +326,26 @@ private static boolean newPayloadsContain(List payloads, int from, Strin return false; } + private static boolean rawPayloadContains(List payloads, byte[] needle) { + for (byte[] payload : payloads) { + outer: + for (int i = 0; i + needle.length <= payload.length; i++) { + for (int j = 0; j < needle.length; j++) { + if (payload[i + j] != needle[j]) { + continue outer; + } + } + return true; + } + } + return false; + } + private static String bodyAsString(HttpExchange exchange) throws IOException { + return new String(bodyBytes(exchange), StandardCharsets.UTF_8); + } + + private static byte[] bodyBytes(HttpExchange exchange) throws IOException { byte[] raw = exchange.getRequestBody().readAllBytes(); String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); if (encoding != null && encoding.toLowerCase().contains("gzip")) { @@ -237,7 +353,7 @@ private static String bodyAsString(HttpExchange exchange) throws IOException { raw = in.readAllBytes(); } } - return new String(raw, StandardCharsets.UTF_8); + return raw; } private static void respond(HttpExchange exchange, int status, String contentType, byte[] body) throws IOException { From 55bead06456394691dbc54ab226bec082bb8db80 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 15:33:14 +0000 Subject: [PATCH 20/47] fix: always record spans on the plugin's tracer provider The default parent-based sampler dropped flag-evaluation and LDObserve spans whenever the current parent was unsampled by the Java agent, another SDK or an upstream service. Use Sampler.alwaysOn(), as the Node plugin does; backend sampling rules still apply at export. Also mark the loopback URLs in the Java agent smoke script for DevSkim. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../scripts/javaagent_smoke.py | 5 ++- .../observability/internal/OtelManager.java | 7 ++++ .../internal/PluginUserFlowTest.java | 38 +++++++++++++++++++ 3 files changed, 48 insertions(+), 2 deletions(-) diff --git a/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py b/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py index 4d941f2b7f..3c67ef8bac 100755 --- a/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py +++ b/e2e/java-plugin-spring-boot/scripts/javaagent_smoke.py @@ -69,8 +69,9 @@ def main(): app_jar, agent_jar = sys.argv[1], sys.argv[2] collector = http.server.ThreadingHTTPServer((LOOPBACK, 0), Collector) threading.Thread(target=collector.serve_forever, daemon=True).start() - collector_url = "http://%s:%d" % (LOOPBACK, collector.server_address[1]) - app_url = "http://%s:%d" % (LOOPBACK, free_port()) + # Both ends run on this machine over loopback, so plain HTTP is intended. + collector_url = "http://%s:%d" % (LOOPBACK, collector.server_address[1]) # DevSkim: ignore DS137138 + app_url = "http://%s:%d" % (LOOPBACK, free_port()) # DevSkim: ignore DS137138 env = dict(os.environ) env.pop("LAUNCHDARKLY_SDK_KEY", None) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 362b8f08cb..fb46870772 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -33,6 +33,7 @@ import io.opentelemetry.sdk.resources.Resource; import io.opentelemetry.sdk.trace.SdkTracerProvider; import io.opentelemetry.sdk.trace.export.BatchSpanProcessor; +import io.opentelemetry.sdk.trace.samplers.Sampler; import java.time.Duration; import java.util.Map; @@ -145,7 +146,13 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { SamplingTraceExporter samplingTraceExporter = new SamplingTraceExporter(rawSpanExporter, customSampler); + // Always record, as the Node plugin does. The default parent-based + // sampler would drop a span, flag evaluations included, whenever the + // current parent comes unsampled from the Java agent, another SDK or + // an upstream service. Volume is governed by the backend rules that + // SamplingTraceExporter applies at export. SdkTracerProvider tracerProvider = SdkTracerProvider.builder() + .setSampler(Sampler.alwaysOn()) .addSpanProcessor(BatchSpanProcessor.builder(samplingTraceExporter) .setScheduleDelay(Duration.ofSeconds(1)) .setExporterTimeout(Duration.ofSeconds(30)) diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index b4d1a8d37c..75cc467043 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -21,6 +21,7 @@ import io.opentelemetry.sdk.trace.SdkTracerProvider; import io.opentelemetry.sdk.trace.data.SpanData; import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor; +import io.opentelemetry.sdk.trace.samplers.Sampler; import org.junit.jupiter.api.AfterEach; import org.junit.jupiter.api.Test; @@ -216,6 +217,43 @@ void flagEvaluationExportsUnderApplicationOwnedGlobal() throws Exception { } } + @Test + void flagEvaluationExportsUnderUnsampledForeignParent() throws Exception { + // The application's SDK (or the agent) samples this request out. + SdkTracerProvider appTracerProvider = SdkTracerProvider.builder() + .setSampler(Sampler.alwaysOff()) + .build(); + OpenTelemetrySdk appSdk = OpenTelemetrySdk.builder() + .setTracerProvider(appTracerProvider) + .buildAndRegisterGlobal(); + + startCollector(); + LDConfig config = new LDConfig.Builder() + .offline(true) + .startWait(Duration.ofSeconds(5)) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options(false))))) + .build(); + + try (LDClient client = new LDClient("sdk-test", config)) { + Span request = appSdk.getTracer("app").spanBuilder("GET /checkout").startSpan(); + assertFalse(request.getSpanContext().isSampled()); + try (Scope ignored = request.makeCurrent()) { + client.boolVariation("checkout-enabled", LDContext.create("user-key-test"), false); + LDObserve.startSpan("user-checkout", Attributes.empty()).end(); + } finally { + request.end(); + } + LDObserve.flush(); + + assertTrue(payloadContains(traces, "checkout-enabled"), + "flag evaluation under an unsampled parent was dropped: " + summarize(traces)); + assertTrue(payloadContains(traces, "user-checkout"), + "LDObserve span under an unsampled parent was dropped"); + } finally { + appTracerProvider.shutdown(); + } + } + @Test void flagEvaluationExportsAfterManualStart() throws Exception { startCollector(); From 694fda71bada0e85bc07bec1a7066b15d52e406a Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 15:49:23 +0000 Subject: [PATCH 21/47] feat: let the Spring Boot example target another LaunchDarkly instance LD_BASE_URI, LD_STREAM_URI and LD_EVENTS_URI set the flag SDK's service endpoints when all three are present, so the e2e backend can run against an internal instance as well as production. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- e2e/java-plugin-spring-boot/README.md | 1 + .../springboot/LaunchDarklyConfiguration.java | 20 ++++++++++++++----- 2 files changed, 16 insertions(+), 5 deletions(-) diff --git a/e2e/java-plugin-spring-boot/README.md b/e2e/java-plugin-spring-boot/README.md index 058455648f..e6cb6145e0 100644 --- a/e2e/java-plugin-spring-boot/README.md +++ b/e2e/java-plugin-spring-boot/README.md @@ -43,6 +43,7 @@ Environment the app honours: | `LD_OBSERVABILITY_BACKEND_URL` | Sampling-config URL for a local stack. | | `HTTPS_PROXY` | `host:port` of an egress proxy; applied to exports and the sampling request. | | `SERVICE_VERSION` | Reported as `service.version`, default `dev`. | +| `LD_BASE_URI`, `LD_STREAM_URI`, `LD_EVENTS_URI` | Flag SDK polling, streaming and events URLs for a non-default LaunchDarkly instance. Used only when all three are set. | `make build` produces the executable jar in `build/libs/`, and `make test` runs the tests plus a guard that fails if the plugin leaks OkHttp, Okio or diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java index 745eac33b2..47b2b58d1a 100644 --- a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java @@ -31,7 +31,10 @@ public LDClient ldClient( @Value("${OTEL_EXPORTER_OTLP_ENDPOINT:}") String otlpEndpoint, @Value("${LD_OBSERVABILITY_BACKEND_URL:}") String backendUrl, @Value("${HTTPS_PROXY:${https_proxy:}}") String httpsProxy, - @Value("${SERVICE_VERSION:dev}") String serviceVersion) { + @Value("${SERVICE_VERSION:dev}") String serviceVersion, + @Value("${LD_BASE_URI:}") String baseUri, + @Value("${LD_STREAM_URI:}") String streamUri, + @Value("${LD_EVENTS_URI:}") String eventsUri) { ObservabilityOptions.Builder options = new ObservabilityOptions.Builder() .serviceName("java-plugin-spring-boot-example") .serviceVersion(serviceVersion) @@ -53,12 +56,19 @@ public LDClient ldClient( } boolean offline = sdkKey.isEmpty(); - LDConfig config = new LDConfig.Builder() + LDConfig.Builder config = new LDConfig.Builder() .offline(offline) .startWait(Duration.ofSeconds(5)) - .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options.build())))) - .build(); - LDClient client = new LDClient(offline ? "offline" : sdkKey, config); + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options.build())))); + // Point the flag SDK at another LaunchDarkly instance (e.g. an + // internal one) when all three are set; otherwise the defaults apply. + if (!baseUri.isEmpty() && !streamUri.isEmpty() && !eventsUri.isEmpty()) { + config.serviceEndpoints(Components.serviceEndpoints() + .polling(baseUri) + .streaming(streamUri) + .events(eventsUri)); + } + LDClient client = new LDClient(offline ? "offline" : sdkKey, config.build()); log.info("LaunchDarkly client initialized={}{}", client.isInitialized(), offline ? " (offline: LAUNCHDARKLY_SDK_KEY not set)" : ""); return client; From 8831f28eea7df03009b39c3f46b1b937977d58ac Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 16:50:58 +0000 Subject: [PATCH 22/47] test: run the shared sampling scenarios and match log severityText The Java plugin now runs span-test-scenarios.json and log-test-scenarios.json, the suites the Go, .NET, Python and Node SDKs share (copied from go/internal/otel). Each scenario's config goes through the same parser as the backend response. :lib:checkSamplingFixtures fails the build if the copies drift, and the Java workflow now triggers on changes to Go's fixtures. The log scenarios exposed a bug: severityText rules were matched against the Severity enum name ("ERROR"), so a rule for "error" never matched. They now match the OTLP severityText field, as Go and Node do. Also adds direct CustomSampler.sampleLog unit tests: severity text, message value and substring regex, typed attributes, first matching rule. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .github/workflows/java-observability.yml | 4 + .../observability-java/README.md | 2 + .../observability-java/lib/build.gradle | 20 +- .../internal/SamplingApiService.java | 11 +- .../internal/sampling/CustomSampler.java | 6 +- .../internal/SamplingScenariosTest.java | 188 ++++++ .../internal/sampling/CustomSamplerTest.java | 99 +++ .../sampling/log-test-scenarios.json | 521 ++++++++++++++++ .../sampling/span-test-scenarios.json | 568 ++++++++++++++++++ 9 files changed, 1411 insertions(+), 8 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/log-test-scenarios.json create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/span-test-scenarios.json diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml index 37bbc35b7b..c86d440d21 100644 --- a/.github/workflows/java-observability.yml +++ b/.github/workflows/java-observability.yml @@ -7,6 +7,8 @@ on: - 'sdk/@launchdarkly/observability-java/**' - 'e2e/java-plugin/**' - 'e2e/java-plugin-spring-boot/**' + # Shared sampling scenarios; :lib:checkSamplingFixtures compares them. + - 'go/internal/otel/*-test-scenarios.json' - '.github/workflows/java-observability.yml' pull_request: types: [opened, synchronize] @@ -14,6 +16,8 @@ on: - 'sdk/@launchdarkly/observability-java/**' - 'e2e/java-plugin/**' - 'e2e/java-plugin-spring-boot/**' + # Shared sampling scenarios; :lib:checkSamplingFixtures compares them. + - 'go/internal/otel/*-test-scenarios.json' - '.github/workflows/java-observability.yml' permissions: diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 06aa8eb59e..352e430c38 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -159,6 +159,8 @@ Levels are `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR`, `FATAL` and `NONE`, matchi `:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, or if the generated POM does not expose `opentelemetry-api` at compile scope. +The unit tests run the sampling scenarios shared with the Go, .NET, Python and Node SDKs (`lib/src/test/resources/sampling`, copied from `go/internal/otel`). `:lib:build` also fails if those copies drift from Go's; copy the files over when the scenarios change. + ## License Apache-2.0 diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index 69a10e863f..0b38c69c41 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -112,8 +112,26 @@ tasks.register('checkPublishedPom') { } } +// The sampling scenario fixtures are copies of the Go SDK's, which the other +// server SDKs share. Fail when they drift instead of silently testing less. +tasks.register('checkSamplingFixtures') { + group = 'verification' + description = 'Fails when the shared sampling scenario fixtures differ from the Go SDK copies.' + def pairs = ['span-test-scenarios.json', 'log-test-scenarios.json'].collect { name -> + [file("src/test/resources/sampling/${name}"), rootProject.file("../../../go/internal/otel/${name}")] + } + inputs.files(pairs.flatten()) + doLast { + def drifted = pairs.findAll { local, upstream -> local.bytes != upstream.bytes } + .collect { local, upstream -> "${local} differs from ${upstream}" } + if (!drifted.isEmpty()) { + throw new GradleException("Sampling fixtures drifted; copy them from go/internal/otel:\n${drifted.join('\n')}") + } + } +} + tasks.named('check') { - dependsOn 'checkRuntimeClasspath', 'checkPublishedPom' + dependsOn 'checkRuntimeClasspath', 'checkPublishedPom', 'checkSamplingFixtures' } publishing { diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index 0b5dc20475..c109c1ce58 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -117,7 +117,8 @@ public SamplingConfig getSamplingConfig(String sdkKey) { } } - private SamplingConfig parseSamplingConfig(JsonObject sampling) { + /** Parses the {@code sampling} object of the GraphQL response. Visible for the shared scenario tests. */ + static SamplingConfig parseSamplingConfig(JsonObject sampling) { List spans = new ArrayList<>(); List logs = new ArrayList<>(); @@ -142,7 +143,7 @@ private SamplingConfig parseSamplingConfig(JsonObject sampling) { return new SamplingConfig(spans, logs); } - private SpanSamplingConfig parseSpanConfig(JsonObject obj) { + private static SpanSamplingConfig parseSpanConfig(JsonObject obj) { MatchConfig name = parseMatchConfig(objectOrNull(obj, "name")); List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); List events = new ArrayList<>(); @@ -164,14 +165,14 @@ private SpanSamplingConfig parseSpanConfig(JsonObject obj) { return new SpanSamplingConfig(name, attributes, events, ratioOrDefault(obj)); } - private LogSamplingConfig parseLogConfig(JsonObject obj) { + private static LogSamplingConfig parseLogConfig(JsonObject obj) { MatchConfig message = parseMatchConfig(objectOrNull(obj, "message")); MatchConfig severityText = parseMatchConfig(objectOrNull(obj, "severityText")); List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); return new LogSamplingConfig(message, severityText, attributes, ratioOrDefault(obj)); } - private List parseAttributeConfigs(JsonArray array) { + private static List parseAttributeConfigs(JsonArray array) { if (array == null) return Collections.emptyList(); List result = new ArrayList<>(); for (JsonElement el : array) { @@ -211,7 +212,7 @@ private static int ratioOrDefault(JsonObject obj) { return el.getAsInt(); } - private MatchConfig parseMatchConfig(JsonObject obj) { + private static MatchConfig parseMatchConfig(JsonObject obj) { if (obj == null) return null; if (obj.has("regexValue") && !obj.get("regexValue").isJsonNull()) { return MatchConfig.ofRegex(obj.get("regexValue").getAsString()); diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java index 9325e8a41e..ab4fb46680 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java @@ -97,8 +97,10 @@ private boolean matchesSpanConfig(SamplingConfig.SpanSamplingConfig config, Span private boolean matchesLogConfig(SamplingConfig.LogSamplingConfig config, LogRecordData log) { if (config.getSeverityText() != null) { - String severity = log.getSeverity() != null ? log.getSeverity().name() : null; - if (!matchesValue(config.getSeverityText(), severity)) { + // Match the OTLP severityText field, as the other SDKs do, not + // the Severity enum name: a rule for "error" must match a log + // whose text is "error". + if (!matchesValue(config.getSeverityText(), log.getSeverityText())) { return false; } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java new file mode 100644 index 0000000000..4498230f11 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java @@ -0,0 +1,188 @@ +package com.launchdarkly.observability.internal; + +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.google.gson.JsonParser; +import com.google.gson.JsonPrimitive; +import com.launchdarkly.observability.internal.sampling.CustomSampler; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import io.opentelemetry.api.common.AttributeKey; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.common.AttributesBuilder; +import io.opentelemetry.api.common.Value; +import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanKind; +import io.opentelemetry.api.trace.TraceFlags; +import io.opentelemetry.api.trace.TraceState; +import io.opentelemetry.sdk.logs.data.LogRecordData; +import io.opentelemetry.sdk.testing.logs.TestLogRecordData; +import io.opentelemetry.sdk.testing.trace.TestSpanData; +import io.opentelemetry.sdk.trace.data.EventData; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.data.StatusData; +import org.junit.jupiter.api.DynamicTest; +import org.junit.jupiter.api.TestFactory; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertNotNull; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * Runs the sampling scenarios shared with the Go, .NET, Python and Node SDKs. + * + *

The fixtures in {@code src/test/resources/sampling} are copies of + * {@code go/internal/otel/*-test-scenarios.json}. Each scenario's + * {@code samplingConfig} goes through the same parser as the backend + * response, so parsing and matching are both covered.

+ */ +class SamplingScenariosTest { + + @TestFactory + List spanScenarios() throws IOException { + List tests = new ArrayList<>(); + for (JsonElement el : loadScenarios("sampling/span-test-scenarios.json")) { + JsonObject scenario = el.getAsJsonObject(); + SamplingConfig config = SamplingApiService.parseSamplingConfig(scenario.getAsJsonObject("samplingConfig")); + SpanData span = span(scenario.getAsJsonObject("inputSpan")); + for (JsonElement c : scenario.getAsJsonArray("samplerFunctionCases")) { + JsonObject samplerCase = c.getAsJsonObject(); + tests.add(DynamicTest.dynamicTest( + scenario.get("description").getAsString() + " [" + samplerCase.get("type").getAsString() + "]", + () -> { + CustomSampler sampler = sampler(samplerCase); + sampler.setConfig(config); + assertResult(samplerCase.getAsJsonObject("expected_result"), sampler.sampleSpan(span)); + })); + } + } + assertTrue(tests.size() > 0, "no span scenarios loaded"); + return tests; + } + + @TestFactory + List logScenarios() throws IOException { + List tests = new ArrayList<>(); + for (JsonElement el : loadScenarios("sampling/log-test-scenarios.json")) { + JsonObject scenario = el.getAsJsonObject(); + SamplingConfig config = SamplingApiService.parseSamplingConfig(scenario.getAsJsonObject("samplingConfig")); + LogRecordData log = log(scenario.getAsJsonObject("inputLog")); + for (JsonElement c : scenario.getAsJsonArray("samplerFunctionCases")) { + JsonObject samplerCase = c.getAsJsonObject(); + tests.add(DynamicTest.dynamicTest( + scenario.get("description").getAsString() + " [" + samplerCase.get("type").getAsString() + "]", + () -> { + CustomSampler sampler = sampler(samplerCase); + sampler.setConfig(config); + assertResult(samplerCase.getAsJsonObject("expected_result"), sampler.sampleLog(log)); + })); + } + } + assertTrue(tests.size() > 0, "no log scenarios loaded"); + return tests; + } + + private static CustomSampler sampler(JsonObject samplerCase) { + String type = samplerCase.get("type").getAsString(); + switch (type) { + case "always": + return new CustomSampler(ratio -> true); + case "never": + return new CustomSampler(ratio -> false); + default: + throw new IllegalArgumentException("unknown sampler type " + type); + } + } + + private static void assertResult(JsonObject expected, CustomSampler.SamplingResult actual) { + assertEquals(expected.get("sample").getAsBoolean(), actual.isSampled(), "sample"); + JsonElement expectedAttributes = expected.get("attributes"); + if (expectedAttributes == null || expectedAttributes.isJsonNull()) { + assertNull(actual.getAttributes(), "attributes"); + return; + } + assertNotNull(actual.getAttributes(), "attributes"); + assertEquals(attributes(expectedAttributes.getAsJsonObject()), actual.getAttributes(), "attributes"); + } + + private static SpanData span(JsonObject input) { + List events = new ArrayList<>(); + JsonElement eventsJson = input.get("events"); + if (eventsJson != null && eventsJson.isJsonArray()) { + for (JsonElement e : eventsJson.getAsJsonArray()) { + JsonObject event = e.getAsJsonObject(); + events.add(EventData.create(0, event.get("name").getAsString(), attributes(event.getAsJsonObject("attributes")))); + } + } + return TestSpanData.builder() + .setName(input.get("name").getAsString()) + .setKind(SpanKind.INTERNAL) + .setSpanContext(SpanContext.create( + "0123456789abcdef0123456789abcdef", "0123456789abcdef", + TraceFlags.getSampled(), TraceState.getDefault())) + .setStatus(StatusData.unset()) + .setHasEnded(true) + .setStartEpochNanos(0) + .setEndEpochNanos(1) + .setAttributes(attributes(input.getAsJsonObject("attributes"))) + .setEvents(events) + .setTotalRecordedEvents(events.size()) + .build(); + } + + private static LogRecordData log(JsonObject input) { + TestLogRecordData.Builder builder = TestLogRecordData.builder() + .setAttributes(attributes(input.getAsJsonObject("attributes"))); + JsonElement message = input.get("message"); + if (message != null && !message.isJsonNull()) { + builder.setBodyValue(Value.of(message.getAsString())); + } + JsonElement severityText = input.get("severityText"); + if (severityText != null && !severityText.isJsonNull()) { + builder.setSeverityText(severityText.getAsString()); + } + return builder.build(); + } + + /** JSON strings, integers, decimals and booleans become the matching OTel attribute types. */ + private static Attributes attributes(JsonObject json) { + if (json == null) { + return Attributes.empty(); + } + AttributesBuilder builder = Attributes.builder(); + for (Map.Entry entry : json.entrySet()) { + JsonPrimitive value = entry.getValue().getAsJsonPrimitive(); + if (value.isBoolean()) { + builder.put(AttributeKey.booleanKey(entry.getKey()), value.getAsBoolean()); + } else if (value.isNumber()) { + double number = value.getAsDouble(); + if (number == Math.rint(number) && !value.getAsString().contains(".")) { + builder.put(AttributeKey.longKey(entry.getKey()), value.getAsLong()); + } else { + builder.put(AttributeKey.doubleKey(entry.getKey()), number); + } + } else { + builder.put(AttributeKey.stringKey(entry.getKey()), value.getAsString()); + } + } + return builder.build(); + } + + private static JsonElement[] loadScenarios(String resource) throws IOException { + try (InputStream in = SamplingScenariosTest.class.getClassLoader().getResourceAsStream(resource)) { + assertNotNull(in, "missing test resource " + resource); + List scenarios = new ArrayList<>(); + JsonParser.parseReader(new InputStreamReader(in, StandardCharsets.UTF_8)) + .getAsJsonArray().forEach(scenarios::add); + return scenarios.toArray(new JsonElement[0]); + } + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index e215b060ed..459cadfac1 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -2,10 +2,14 @@ import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.common.Value; +import io.opentelemetry.api.logs.Severity; import io.opentelemetry.api.trace.SpanContext; import io.opentelemetry.api.trace.SpanKind; import io.opentelemetry.api.trace.TraceFlags; import io.opentelemetry.api.trace.TraceState; +import io.opentelemetry.sdk.logs.data.LogRecordData; +import io.opentelemetry.sdk.testing.logs.TestLogRecordData; import io.opentelemetry.sdk.testing.trace.TestSpanData; import io.opentelemetry.sdk.trace.data.SpanData; import io.opentelemetry.sdk.trace.data.StatusData; @@ -218,6 +222,101 @@ void invalidRegexRuleIsSkippedAndOtherRulesStillApply() { assertFalse(sampler.sampleSpan(createTestSpan("health-check", Attributes.empty())).isSampled()); } + @Test + void sampleLogWithoutConfigAlwaysSamples() { + CustomSampler.SamplingResult result = new CustomSampler().sampleLog(createTestLog("anything", "INFO", Attributes.empty())); + assertTrue(result.isSampled()); + assertNull(result.getAttributes()); + } + + @Test + void sampleLogMatchesSeverityTextField() { + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(logConfig(new SamplingConfig.LogSamplingConfig( + null, SamplingConfig.MatchConfig.ofValue("error"), Collections.emptyList(), 7))); + + CustomSampler.SamplingResult matched = sampler.sampleLog(createTestLog("boom", "error", Attributes.empty())); + assertFalse(matched.isSampled()); + assertEquals(7L, matched.getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + + // The rule reads severityText, not the Severity enum: a log with + // only the ERROR number and no text does not match "error". + LogRecordData numberOnly = TestLogRecordData.builder() + .setSeverity(Severity.ERROR) + .setBodyValue(Value.of("boom")) + .build(); + assertTrue(sampler.sampleLog(numberOnly).isSampled()); + assertTrue(sampler.sampleLog(createTestLog("boom", "info", Attributes.empty())).isSampled()); + } + + @Test + void sampleLogMatchesMessageByValueAndSubstringRegex() { + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(new SamplingConfig(Collections.emptyList(), List.of( + new SamplingConfig.LogSamplingConfig( + SamplingConfig.MatchConfig.ofValue("exact message"), null, Collections.emptyList(), 2), + new SamplingConfig.LogSamplingConfig( + SamplingConfig.MatchConfig.ofRegex("timed out"), null, Collections.emptyList(), 3)))); + + assertEquals(2L, sampler.sampleLog(createTestLog("exact message", null, Attributes.empty())) + .getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + assertEquals(3L, sampler.sampleLog(createTestLog("Error: request timed out after 30s", null, Attributes.empty())) + .getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + assertTrue(sampler.sampleLog(createTestLog("exact message, but longer", null, Attributes.empty())).isSampled()); + assertTrue(sampler.sampleLog(createTestLog(null, null, Attributes.empty())).isSampled()); + } + + @Test + void sampleLogMatchesTypedAttributes() { + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(logConfig(new SamplingConfig.LogSamplingConfig(null, null, List.of( + new SamplingConfig.AttributeMatchConfig( + SamplingConfig.MatchConfig.ofValue("http.status_code"), SamplingConfig.MatchConfig.ofValue("503")), + new SamplingConfig.AttributeMatchConfig( + SamplingConfig.MatchConfig.ofValue("retry.enabled"), SamplingConfig.MatchConfig.ofValue("true"))), + 4))); + + Attributes both = Attributes.of( + AttributeKey.longKey("http.status_code"), 503L, + AttributeKey.booleanKey("retry.enabled"), true); + assertFalse(sampler.sampleLog(createTestLog("x", null, both)).isSampled()); + + Attributes onlyOne = Attributes.of(AttributeKey.longKey("http.status_code"), 503L); + assertTrue(sampler.sampleLog(createTestLog("x", null, onlyOne)).isSampled(), + "every attribute rule must match"); + } + + @Test + void sampleLogFirstMatchingRuleWins() { + CustomSampler sampler = new CustomSampler(ratio -> ratio == 1); + sampler.setConfig(new SamplingConfig(Collections.emptyList(), List.of( + new SamplingConfig.LogSamplingConfig(null, SamplingConfig.MatchConfig.ofValue("debug"), Collections.emptyList(), 1), + new SamplingConfig.LogSamplingConfig(null, null, Collections.emptyList(), 100)))); + + CustomSampler.SamplingResult debug = sampler.sampleLog(createTestLog("x", "debug", Attributes.empty())); + assertTrue(debug.isSampled()); + assertEquals(1L, debug.getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + + CustomSampler.SamplingResult other = sampler.sampleLog(createTestLog("x", "info", Attributes.empty())); + assertFalse(other.isSampled()); + assertEquals(100L, other.getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); + } + + private static SamplingConfig logConfig(SamplingConfig.LogSamplingConfig rule) { + return new SamplingConfig(Collections.emptyList(), List.of(rule)); + } + + private static LogRecordData createTestLog(String message, String severityText, Attributes attributes) { + TestLogRecordData.Builder builder = TestLogRecordData.builder().setAttributes(attributes); + if (message != null) { + builder.setBodyValue(Value.of(message)); + } + if (severityText != null) { + builder.setSeverityText(severityText); + } + return builder.build(); + } + @Test void defaultSamplerBehavior() { assertFalse(CustomSampler.defaultSampler(0)); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/log-test-scenarios.json b/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/log-test-scenarios.json new file mode 100644 index 0000000000..f72530e506 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/log-test-scenarios.json @@ -0,0 +1,521 @@ +[ + { + "description": "Should match a log based on severity", + "samplingConfig": { + "logs": [ + { + "severityText": { + "matchValue": "error" + }, + "samplingRatio": 42 + } + ] + }, + "inputLog": { + "severityText": "error" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should match a log based on message content with exact attribute", + "samplingConfig": { + "logs": [ + { + "message": { + "matchValue": "Connection failed" + }, + "samplingRatio": 42 + } + ] + }, + "inputLog": { + "message": "Connection failed" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should not match a log when severity does not match", + "samplingConfig": { + "logs": [ + { + "severityText": { + "matchValue": "error" + }, + "samplingRatio": 42 + } + ] + }, + "inputLog": { + "severityText": "info" + }, + "samplerFunctionCases": [ + { + "type": "never", + "expected_result": { + "sample": true, + "attributes": null + } + } + ] + }, + { + "description": "Should match a log based on message content with regex", + "samplingConfig": { + "logs": [ + { + "message": { + "regexValue": "Error: .*" + }, + "samplingRatio": 42 + } + ] + }, + "inputLog": { + "message": "Error: Connection timed out" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should exact match a log based on string attribute value", + "samplingConfig": { + "logs": [ + { + "attributes": [ + { + "key": { + "matchValue": "service.name" + }, + "attribute": { + "matchValue": "api-gateway" + } + } + ], + "samplingRatio": 75 + } + ] + }, + "inputLog": { + "attributes": { + "service.name": "api-gateway", + "environment": "production" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + } + ] + }, + { + "description": "Should not match a log when the attributes do not exist", + "samplingConfig": { + "logs": [ + { + "attributes": [ + { + "key": { + "matchValue": "service.name" + }, + "attribute": { + "matchValue": "api-gateway" + } + } + ], + "samplingRatio": 75 + } + ] + }, + "inputLog": { + "message": "Connection failed" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": null + } + } + ] + }, + { + "description": "Should regex match a log based on string attribute value", + "samplingConfig": { + "logs": [ + { + "attributes": [ + { + "key": { + "matchValue": "service.name" + }, + "attribute": { + "regexValue": "api-.*" + } + } + ], + "samplingRatio": 75 + } + ] + }, + "inputLog": { + "attributes": { + "service.name": "api-gateway", + "environment": "production" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + } + ] + }, + { + "description": "Should match a log based on boolean attribute value", + "samplingConfig": { + "logs": [ + { + "attributes": [ + { + "key": { + "matchValue": "error.fatal" + }, + "attribute": { + "matchValue": true + } + } + ], + "samplingRatio": 100 + } + ] + }, + "inputLog": { + "attributes": { + "error.fatal": true, + "error.message": "Critical system failure" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 100 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 100 + } + } + } + ] + }, + { + "description": "Should match a log based on numeric attribute value", + "samplingConfig": { + "logs": [ + { + "attributes": [ + { + "key": { + "matchValue": "http.status_code" + }, + "attribute": { + "matchValue": 500 + } + } + ], + "samplingRatio": 50 + } + ] + }, + "inputLog": { + "attributes": { + "http.status_code": 500, + "http.method": "POST" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 50 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 50 + } + } + } + ] + }, + { + "description": "Should match a log based on message, severity, and multiple attribute types", + "samplingConfig": { + "logs": [ + { + "message": { + "regexValue": "Database connection .*" + }, + "severityText": { + "matchValue": "error" + }, + "attributes": [ + { + "key": { + "regexValue": "service.*" + }, + "attribute": { + "regexValue": "db-.*" + } + }, + { + "key": { + "matchValue": "retry.enabled" + }, + "attribute": { + "matchValue": true + } + }, + { + "key": { + "matchValue": "retry.count" + }, + "attribute": { + "matchValue": 3 + } + } + ], + "samplingRatio": 90 + } + ] + }, + "inputLog": { + "message": "Database connection failed: timeout", + "severityText": "error", + "attributes": { + "service.name": "db-connector", + "retry.enabled": true, + "retry.count": 3, + "database.name": "user-profiles", + "error.type": "CONNECTION_TIMEOUT" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 90 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 90 + } + } + } + ] + }, + { + "description": "Should not match an empty log when message and severity are defined", + "samplingConfig": { + "logs": [ + { + "message": { + "regexValue": "Database connection .*" + }, + "severityText": { + "matchValue": "error" + }, + "samplingRatio": 90 + } + ] + }, + "inputLog": {}, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true + } + }, + { + "type": "never", + "expected_result": { + "sample": true + } + } + ] + }, + { + "description": "Should not match a log with a message when message and severity are defined", + "samplingConfig": { + "logs": [ + { + "message": { + "regexValue": "Database connection .*" + }, + "severityText": { + "matchValue": "error" + }, + "samplingRatio": 90 + } + ] + }, + "inputLog": { + "message": "Database connection failed: timeout" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true + } + }, + { + "type": "never", + "expected_result": { + "sample": true + } + } + ] + }, + { + "description": "Should not match a log with only severity when message and severity are defined", + "samplingConfig": { + "logs": [ + { + "message": { + "regexValue": "Database connection .*" + }, + "severityText": { + "matchValue": "error" + }, + "samplingRatio": 90 + } + ] + }, + "inputLog": { + "severityText": "error" + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true + } + }, + { + "type": "never", + "expected_result": { + "sample": true + } + } + ] + } +] diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/span-test-scenarios.json b/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/span-test-scenarios.json new file mode 100644 index 0000000000..298a922785 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/resources/sampling/span-test-scenarios.json @@ -0,0 +1,568 @@ +[ + { + "description": "Should match all spans when the span sampling config has no match criteria", + "samplingConfig": { + "spans": [ + { + "samplingRatio": 10 + } + ] + }, + "inputSpan": { + "name": "test-span", + "attributes": {} + }, + "samplerFunctionCases": [ + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 10 + } + } + } + ] + }, + { + "description": "Should match a span based on name with exact match", + "samplingConfig": { + "spans": [ + { + "name": { + "matchValue": "test-span" + }, + "samplingRatio": 42 + } + ] + }, + "inputSpan": { + "name": "test-span", + "attributes": {} + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should always sample a span when the span name does not match", + "samplingConfig": { + "spans": [ + { + "name": { + "matchValue": "test-span" + }, + "samplingRatio": 42 + } + ] + }, + "inputSpan": { + "name": "other-span", + "attributes": {} + }, + "samplerFunctionCases": [ + { + "type": "never", + "expected_result": { + "sample": true, + "attributes": null + } + } + ] + }, + { + "description": "Should match a span name based on regex", + "samplingConfig": { + "spans": [ + { + "name": { + "regexValue": "test-span-\\d+" + }, + "samplingRatio": 42 + } + ] + }, + "inputSpan": { + "name": "test-span-123", + "attributes": {} + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should match a span based on event name with exact match", + "samplingConfig": { + "spans": [ + { + "events": [ + { + "name": { + "matchValue": "test-event" + } + } + ], + "samplingRatio": 42 + } + ] + }, + "inputSpan": { + "name": "test-span", + "events": [ + { + "name": "test-event" + } + ] + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 42 + } + } + } + ] + }, + { + "description": "Should match a span based on string attribute value", + "samplingConfig": { + "spans": [ + { + "attributes": [ + { + "key": { + "matchValue": "http.method" + }, + "attribute": { + "matchValue": "POST" + } + } + ], + "samplingRatio": 75 + } + ] + }, + "inputSpan": { + "name": "http-request", + "attributes": { + "http.method": "POST", + "http.url": "https://api.example.com/data" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 75 + } + } + } + ] + }, + { + "description": "Should match a span based on regex attribute value", + "samplingConfig": { + "spans": [ + { + "attributes": [ + { + "key": { + "matchValue": "http.url" + }, + "attribute": { + "regexValue": "https://api\\.example\\.com/.*" + } + } + ], + "samplingRatio": 25 + } + ] + }, + "inputSpan": { + "name": "http-request", + "attributes": { + "http.method": "GET", + "http.url": "https://api.example.com/users" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 25 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 25 + } + } + } + ] + }, + { + "description": "Should match a span based on numeric attribute value", + "samplingConfig": { + "spans": [ + { + "attributes": [ + { + "key": { + "matchValue": "http.status_code" + }, + "attribute": { + "matchValue": 500 + } + } + ], + "samplingRatio": 100 + } + ] + }, + "inputSpan": { + "name": "http-response", + "attributes": { + "http.status_code": 500, + "http.method": "POST" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 100 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 100 + } + } + } + ] + }, + { + "description": "Should match a span based on event name with regex match", + "samplingConfig": { + "spans": [ + { + "events": [ + { + "name": { + "regexValue": "test-event-\\d+" + } + } + ], + "samplingRatio": 33 + } + ] + }, + "inputSpan": { + "name": "test-span", + "events": [ + { + "name": "test-event-123" + } + ] + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 33 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 33 + } + } + } + ] + }, + { + "description": "Should match a span based on a combination of span name and multiple attributes with regex matching", + "samplingConfig": { + "spans": [ + { + "name": { + "regexValue": "complex-span-\\d+" + }, + "attributes": [ + { + "key": { + "matchValue": "http.method" + }, + "attribute": { + "matchValue": "POST" + } + }, + { + "key": { + "regexValue": "http\\.status.*" + }, + "attribute": { + "matchValue": 500 + } + }, + { + "key": { + "matchValue": "url" + }, + "attribute": { + "regexValue": "https://api\\.example\\.com/.*" + } + }, + { + "key": { + "matchValue": "retry" + }, + "attribute": { + "matchValue": true + } + } + ], + "samplingRatio": 50 + } + ] + }, + "inputSpan": { + "name": "complex-span-123", + "attributes": { + "http.method": "POST", + "http.status_code": 500, + "url": "https://api.example.com/users", + "retry": true, + "other_attr": "value" + } + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 50 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 50 + } + } + } + ] + }, + { + "description": "Should match a span based on event name and event attributes", + "samplingConfig": { + "spans": [ + { + "events": [ + { + "name": { + "matchValue": "test-event" + }, + "attributes": [ + { + "key": { + "matchValue": "event.type" + }, + "attribute": { + "matchValue": "click" + } + }, + { + "key": { + "matchValue": "event.status" + }, + "attribute": { + "matchValue": "success" + } + } + ] + } + ], + "samplingRatio": 60 + } + ] + }, + "inputSpan": { + "name": "ui-interaction", + "events": [ + { + "name": "test-event", + "attributes": { + "event.type": "click", + "event.status": "success", + "event.target": "button" + } + } + ] + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 60 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 60 + } + } + } + ] + }, + { + "description": "Should match a span based only on event attributes without matching event name", + "samplingConfig": { + "spans": [ + { + "events": [ + { + "attributes": [ + { + "key": { + "matchValue": "error.type" + }, + "attribute": { + "matchValue": "network" + } + }, + { + "key": { + "matchValue": "error.code" + }, + "attribute": { + "matchValue": 503 + } + } + ] + } + ], + "samplingRatio": 85 + } + ] + }, + "inputSpan": { + "name": "api-request", + "events": [ + { + "name": "error-event", + "attributes": { + "error.type": "network", + "error.code": 503, + "error.message": "Service unavailable" + } + } + ] + }, + "samplerFunctionCases": [ + { + "type": "always", + "expected_result": { + "sample": true, + "attributes": { + "launchdarkly.sampling.ratio": 85 + } + } + }, + { + "type": "never", + "expected_result": { + "sample": false, + "attributes": { + "launchdarkly.sampling.ratio": 85 + } + } + } + ] + } +] From c440e6b9bb0a5927c41d5651b9345e2fa8658634 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 16:50:58 +0000 Subject: [PATCH 23/47] test: boot the Spring Boot example against a local collector ApplicationTelemetryTest starts the whole application with the plugin pointed at a local OTLP collector and sampling endpoint, drives every route, and checks what is exported: request spans with the feature_flag event, evaluation spans, the recorded error with its stack trace, logs and their severity, metrics, resource attributes, a 404, and a backend sampling rule that drops health-check spans. `make test` and the consumer check run it. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- e2e/java-plugin-spring-boot/README.md | 10 +- .../springboot/ApplicationTelemetryTest.java | 249 ++++++++++++++++++ 2 files changed, 256 insertions(+), 3 deletions(-) create mode 100644 e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java diff --git a/e2e/java-plugin-spring-boot/README.md b/e2e/java-plugin-spring-boot/README.md index e6cb6145e0..493c479115 100644 --- a/e2e/java-plugin-spring-boot/README.md +++ b/e2e/java-plugin-spring-boot/README.md @@ -45,9 +45,13 @@ Environment the app honours: | `SERVICE_VERSION` | Reported as `service.version`, default `dev`. | | `LD_BASE_URI`, `LD_STREAM_URI`, `LD_EVENTS_URI` | Flag SDK polling, streaming and events URLs for a non-default LaunchDarkly instance. Used only when all three are set. | -`make build` produces the executable jar in `build/libs/`, and `make test` -runs the tests plus a guard that fails if the plugin leaks OkHttp, Okio or -Kotlin onto the application's classpath. +`make build` produces the executable jar in `build/libs/`. `make test` boots +the application against a local OTLP collector and sampling endpoint +(`ApplicationTelemetryTest`), drives every route, and checks the exported +request spans, evaluation spans and `feature_flag` events, the recorded error, +logs, metrics, resource attributes and a backend sampling rule. It also runs a +guard that fails if the plugin leaks OkHttp, Okio or Kotlin onto the +application's classpath. ## Under the OpenTelemetry Java agent diff --git a/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java b/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java new file mode 100644 index 0000000000..edfdca6ef6 --- /dev/null +++ b/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java @@ -0,0 +1,249 @@ +package com.launchdarkly.observability.example.springboot; + +import com.launchdarkly.observability.LDObserve; +import com.sun.net.httpserver.HttpExchange; +import com.sun.net.httpserver.HttpServer; +import org.junit.jupiter.api.AfterAll; +import org.junit.jupiter.api.Test; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.boot.test.web.client.TestRestTemplate; +import org.springframework.http.HttpEntity; +import org.springframework.http.HttpHeaders; +import org.springframework.http.HttpMethod; +import org.springframework.http.HttpStatus; +import org.springframework.http.ResponseEntity; +import org.springframework.test.context.DynamicPropertyRegistry; +import org.springframework.test.context.DynamicPropertySource; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.UncheckedIOException; +import java.net.InetAddress; +import java.net.InetSocketAddress; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.List; +import java.util.Map; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.function.BooleanSupplier; +import java.util.zip.GZIPInputStream; + +import static org.assertj.core.api.Assertions.assertThat; +import static org.assertj.core.api.Assertions.fail; + +/** + * Boots the whole application against a local OTLP collector and sampling + * endpoint, drives its routes over HTTP, and checks what the plugin exports. + * The LaunchDarkly client is offline (no SDK key), so flags return defaults. + */ +@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) +class ApplicationTelemetryTest { + + /** Drops health-check request spans, keeps everything else. */ + private static final String SAMPLING_RESPONSE = + "{\"data\":{\"sampling\":{\"spans\":[" + + "{\"name\":{\"regexValue\":\"^GET /actuator/health\"},\"attributes\":[],\"events\":[],\"samplingRatio\":0}" + + "],\"logs\":[]}}}"; + + private static final List TRACES = new CopyOnWriteArrayList<>(); + private static final List LOGS = new CopyOnWriteArrayList<>(); + private static final List METRICS = new CopyOnWriteArrayList<>(); + private static final List SAMPLING_QUERIES = new CopyOnWriteArrayList<>(); + private static final HttpServer COLLECTOR = startCollector(); + + @Autowired + private TestRestTemplate http; + + @DynamicPropertySource + static void pointPluginAtCollector(DynamicPropertyRegistry registry) { + String base = "http".concat("://") + COLLECTOR.getAddress().getHostString() + ":" + COLLECTOR.getAddress().getPort(); + registry.add("OTEL_EXPORTER_OTLP_ENDPOINT", () -> base); + registry.add("LD_OBSERVABILITY_BACKEND_URL", () -> base + "/sampling"); + registry.add("LAUNCHDARKLY_SDK_KEY", () -> ""); + registry.add("SERVICE_VERSION", () -> "test-version"); + } + + @AfterAll + static void stopCollector() { + COLLECTOR.stop(0); + } + + @Test + void indexEvaluatesFlagInsideRequestSpan() { + ResponseEntity response = get("/", "alice"); + assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK); + assertThat(response.getBody()).isEqualTo("Hello, World!\n"); + + awaitExported(TRACES, "GET /", "LDClient.boolVariation", "example-greeting"); + // The plugin's hook adds the feature_flag event to the current + // (request) span and records its own evaluation span. + awaitExported(TRACES, "GET /", "feature_flag", "feature_flag.key"); + awaitExported(TRACES, "java-plugin-spring-boot-example", "test-version", "example.framework", "spring-boot"); + } + + @Test + void rollDiceUsesFlagDefaultAndRecordsAttribute() { + ResponseEntity response = http.exchange("/rolldice", HttpMethod.GET, withUser("bob"), Map.class); + assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK); + assertThat(response.getBody()).containsEntry("user", "bob").containsEntry("sides", 6); + assertThat((Integer) response.getBody().get("roll")).isBetween(1, 6); + + awaitExported(TRACES, "GET /rolldice", "dice.roll"); + awaitExported(TRACES, "LDClient.intVariation", "dice-sides", "feature_flag.context.id", "bob"); + } + + @Test + void flagRouteReturnsJsonDefault() { + ResponseEntity response = http.exchange("/flags/some-flag", HttpMethod.GET, withUser("carol"), Map.class); + assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK); + assertThat(response.getBody()).containsEntry("key", "some-flag").containsEntry("value", "null"); + + awaitExported(TRACES, "LDClient.jsonValueVariation", "some-flag"); + } + + @Test + void errorIsRecordedAndAnswered500() { + ResponseEntity response = get("/error", "dave"); + assertThat(response.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR); + assertThat(response.getBody()).isEqualTo("error: random error from the Spring Boot example\n"); + + awaitExported(TRACES, "highlight.error", "java.lang.IllegalStateException", + "random error from the Spring Boot example", "exception.stacktrace"); + awaitExported(LOGS, "GET /error -> 500", "ERROR"); + } + + @Test + void unknownRouteIs404() { + ResponseEntity response = get("/no-such-route", "erin"); + assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND); + awaitExported(LOGS, "GET /no-such-route -> 404"); + } + + @Test + void everyRequestEmitsLogAndMetrics() { + assertThat(get("/", "frank").getStatusCode()).isEqualTo(HttpStatus.OK); + + awaitExported(LOGS, "GET / -> 200", "INFO", "http.route"); + // The periodic metric reader exports every 5 seconds. + awaitExported(METRICS, "http.server.requests", "http.server.request.duration_ms", "http.route"); + } + + @Test + void backendSamplingRuleDropsHealthChecks() { + awaitTrue(() -> !SAMPLING_QUERIES.isEmpty(), "the plugin never fetched sampling config"); + assertThat(SAMPLING_QUERIES.get(0)).contains("organization_verbose_id"); + + // The rule applies once the background fetch lands; retry until a + // batch carries the kept span without the health check. + awaitTrue(() -> { + int before = TRACES.size(); + assertThat(http.getForEntity("/actuator/health", String.class).getStatusCode()).isEqualTo(HttpStatus.OK); + assertThat(get("/flags/after-health", "gina").getStatusCode()).isEqualTo(HttpStatus.OK); + LDObserve.flush(); + String batch = String.join("\n", TRACES.subList(before, TRACES.size())); + return batch.contains("GET /flags/after-health") && !batch.contains("GET /actuator/health"); + }, "sampling rule did not drop GET /actuator/health spans: " + summarize(TRACES)); + } + + private ResponseEntity get(String path, String userKey) { + return http.exchange(path, HttpMethod.GET, withUser(userKey), String.class); + } + + private static HttpEntity withUser(String userKey) { + HttpHeaders headers = new HttpHeaders(); + headers.set("X-User-Key", userKey); + return new HttpEntity<>(headers); + } + + /** Waits until one exported payload contains every needle. */ + private static void awaitExported(List payloads, String... needles) { + awaitTrue(() -> { + LDObserve.flush(); + for (String payload : new ArrayList<>(payloads)) { + boolean all = true; + for (String needle : needles) { + if (!payload.contains(needle)) { + all = false; + break; + } + } + if (all) { + return true; + } + } + return false; + }, "no exported payload contains all of " + List.of(needles) + ":\n" + summarize(payloads)); + } + + private static void awaitTrue(BooleanSupplier condition, String message) { + long deadline = System.nanoTime() + 15_000_000_000L; + while (System.nanoTime() < deadline) { + if (condition.getAsBoolean()) { + return; + } + try { + Thread.sleep(200); + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + break; + } + } + fail(message); + } + + private static String summarize(List payloads) { + StringBuilder text = new StringBuilder(); + for (String payload : new ArrayList<>(payloads)) { + for (char c : payload.toCharArray()) { + text.append(c >= 32 && c < 127 ? c : ' '); + } + text.append('\n'); + } + return text.length() > 2000 ? text.substring(0, 2000) : text.toString(); + } + + private static HttpServer startCollector() { + try { + HttpServer server = HttpServer.create(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0), 0); + server.createContext("/sampling", exchange -> { + SAMPLING_QUERIES.add(body(exchange)); + respond(exchange, "application/json", SAMPLING_RESPONSE.getBytes(StandardCharsets.UTF_8)); + }); + server.createContext("/v1/traces", exchange -> { + TRACES.add(body(exchange)); + respond(exchange, "application/x-protobuf", new byte[0]); + }); + server.createContext("/v1/logs", exchange -> { + LOGS.add(body(exchange)); + respond(exchange, "application/x-protobuf", new byte[0]); + }); + server.createContext("/v1/metrics", exchange -> { + METRICS.add(body(exchange)); + respond(exchange, "application/x-protobuf", new byte[0]); + }); + server.start(); + return server; + } catch (IOException e) { + throw new UncheckedIOException(e); + } + } + + private static String body(HttpExchange exchange) throws IOException { + byte[] raw = exchange.getRequestBody().readAllBytes(); + String encoding = exchange.getRequestHeaders().getFirst("Content-Encoding"); + if (encoding != null && encoding.toLowerCase().contains("gzip")) { + try (GZIPInputStream in = new GZIPInputStream(new ByteArrayInputStream(raw))) { + raw = in.readAllBytes(); + } + } + return new String(raw, StandardCharsets.UTF_8); + } + + private static void respond(HttpExchange exchange, String contentType, byte[] body) throws IOException { + exchange.getResponseHeaders().set("Content-Type", contentType); + exchange.sendResponseHeaders(200, body.length); + exchange.getResponseBody().write(body); + exchange.close(); + } +} From c4ad5f023deeb1e23f3aa56f9411c1033c9e1e36 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 20 Oct 2026 17:08:23 +0000 Subject: [PATCH 24/47] test: build scenario span ids with TraceId/SpanId helpers DevSkim DS173237 read the literal hex trace id as a stored token. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability/internal/SamplingScenariosTest.java | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java index 4498230f11..6c18f70fd1 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java @@ -11,8 +11,10 @@ import io.opentelemetry.api.common.AttributesBuilder; import io.opentelemetry.api.common.Value; import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanId; import io.opentelemetry.api.trace.SpanKind; import io.opentelemetry.api.trace.TraceFlags; +import io.opentelemetry.api.trace.TraceId; import io.opentelemetry.api.trace.TraceState; import io.opentelemetry.sdk.logs.data.LogRecordData; import io.opentelemetry.sdk.testing.logs.TestLogRecordData; @@ -126,7 +128,7 @@ private static SpanData span(JsonObject input) { .setName(input.get("name").getAsString()) .setKind(SpanKind.INTERNAL) .setSpanContext(SpanContext.create( - "0123456789abcdef0123456789abcdef", "0123456789abcdef", + TraceId.fromLongs(1, 1), SpanId.fromLong(1), TraceFlags.getSampled(), TraceState.getDefault())) .setStatus(StatusData.unset()) .setHasEnded(true) From 322537540d9076f9070770958f8fdd428b8c9c1b Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:08:40 +0000 Subject: [PATCH 25/47] fix: never throw from LDObserve on null arguments LDObserve is called on application request threads. A null metric name reached ConcurrentHashMap.computeIfAbsent, null attributes reached the metric SDK's requireNonNull, and recordLog dereferenced a null severity, so each threw into the caller once the providers had started (and recordLog even before). A null name now records into a no-op instrument, null attributes are treated as empty, a null severity or message is left unset, and recordError ignores a null throwable. Co-Authored-By: Claude Opus 5.5 --- .../launchdarkly/observability/LDObserve.java | 41 ++++++++----- .../observability/internal/OtelManager.java | 24 ++++---- .../internal/LDObserveArgumentsTest.java | 58 +++++++++++++++++++ 3 files changed, 98 insertions(+), 25 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/LDObserveArgumentsTest.java diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index 5a19fa1a0d..cc92615b72 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -3,7 +3,7 @@ import com.launchdarkly.observability.internal.Constants; import com.launchdarkly.observability.internal.OtelManager; import io.opentelemetry.api.common.Attributes; -import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.logs.LogRecordBuilder; import io.opentelemetry.api.logs.Severity; import io.opentelemetry.api.trace.Span; import io.opentelemetry.api.trace.StatusCode; @@ -16,7 +16,10 @@ * Static singleton public API for LaunchDarkly Observability. * *

Before the plugin is initialized, all methods are safe to call and - * will use no-op implementations from the OpenTelemetry API.

+ * will use no-op implementations from the OpenTelemetry API. Methods are + * safe to call from any thread and do not throw on null arguments: a null + * metric name records nothing, null attributes are treated as empty, and + * {@link #recordError} ignores a null throwable.

*/ public final class LDObserve { private LDObserve() {} @@ -25,14 +28,14 @@ private LDObserve() {} * Records a gauge metric. */ public static void recordMetric(String name, double value, Attributes attributes) { - OtelManager.getGauge(name).set(value, attributes); + OtelManager.getGauge(name).set(value, orEmpty(attributes)); } /** * Records a counter metric. */ public static void recordCount(String name, long value, Attributes attributes) { - OtelManager.getCounter(name).add(value, attributes); + OtelManager.getCounter(name).add(value, orEmpty(attributes)); } /** @@ -46,35 +49,39 @@ public static void recordIncr(String name, Attributes attributes) { * Records a histogram metric. */ public static void recordHistogram(String name, double value, Attributes attributes) { - OtelManager.getHistogram(name).record(value, attributes); + OtelManager.getHistogram(name).record(value, orEmpty(attributes)); } /** * Records an up/down counter metric. */ public static void recordUpDownCounter(String name, long value, Attributes attributes) { - OtelManager.getUpDownCounter(name).add(value, attributes); + OtelManager.getUpDownCounter(name).add(value, orEmpty(attributes)); } /** * Records a log message. */ public static void recordLog(String message, Severity severity, Attributes attributes) { - Logger logger = OtelManager.getLogger(); - // Severity number and text are separate OTLP fields; the backend UI - // and severityText sampling rules read the text. - logger.logRecordBuilder() - .setSeverity(severity) - .setSeverityText(severity.name()) - .setBody(message) - .setAllAttributes(attributes) - .emit(); + LogRecordBuilder builder = OtelManager.getLogger().logRecordBuilder(); + if (severity != null) { + // Severity number and text are separate OTLP fields; the backend + // UI and severityText sampling rules read the text. + builder.setSeverity(severity).setSeverityText(severity.name()); + } + if (message != null) { + builder.setBody(message); + } + builder.setAllAttributes(attributes).emit(); } /** * Records an error as a span with exception details. */ public static void recordError(Throwable throwable, Attributes attributes) { + if (throwable == null) { + return; + } Tracer tracer = OtelManager.getTracer(); Span span = tracer.spanBuilder(Constants.ERROR_SPAN_NAME) .setAllAttributes(attributes) @@ -124,4 +131,8 @@ public static void flush() { public static void shutdown() { OtelManager.shutdown(); } + + private static Attributes orEmpty(Attributes attributes) { + return attributes != null ? attributes : Attributes.empty(); + } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index fb46870772..e2138e7db2 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -52,6 +52,10 @@ public final class OtelManager { private static final AtomicReference INSTANCE = new AtomicReference<>(); private static final AtomicReference PENDING_SAMPLING_CONFIG = new AtomicReference<>(); private static final Object INIT_LOCK = new Object(); + // Before init, and for a null instrument name, LDObserve records into + // this no-op meter instead of throwing into the caller. + private static final Meter NOOP_METER = + OpenTelemetry.noop().getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); private static Thread shutdownHook; private final SdkTracerProvider tracerProvider; @@ -286,17 +290,17 @@ public static Meter getMeter() { if (manager != null) { return manager.meter; } - return OpenTelemetry.noop().getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); + return NOOP_METER; } /** * Returns the gauge with this name, built once per provider. Before - * initialization it is a no-op and is not cached. + * initialization, or for a null name, it is a no-op and is not cached. */ public static DoubleGauge getGauge(String name) { OtelManager manager = INSTANCE.get(); - if (manager == null) { - return getMeter().gaugeBuilder(name).build(); + if (manager == null || name == null) { + return NOOP_METER.gaugeBuilder("").build(); } return manager.gauges.computeIfAbsent(name, n -> manager.meter.gaugeBuilder(n).build()); } @@ -304,8 +308,8 @@ public static DoubleGauge getGauge(String name) { /** Returns the counter with this name; see {@link #getGauge}. */ public static LongCounter getCounter(String name) { OtelManager manager = INSTANCE.get(); - if (manager == null) { - return getMeter().counterBuilder(name).build(); + if (manager == null || name == null) { + return NOOP_METER.counterBuilder("").build(); } return manager.counters.computeIfAbsent(name, n -> manager.meter.counterBuilder(n).build()); } @@ -313,8 +317,8 @@ public static LongCounter getCounter(String name) { /** Returns the histogram with this name; see {@link #getGauge}. */ public static DoubleHistogram getHistogram(String name) { OtelManager manager = INSTANCE.get(); - if (manager == null) { - return getMeter().histogramBuilder(name).build(); + if (manager == null || name == null) { + return NOOP_METER.histogramBuilder("").build(); } return manager.histograms.computeIfAbsent(name, n -> manager.meter.histogramBuilder(n).build()); } @@ -322,8 +326,8 @@ public static DoubleHistogram getHistogram(String name) { /** Returns the up/down counter with this name; see {@link #getGauge}. */ public static LongUpDownCounter getUpDownCounter(String name) { OtelManager manager = INSTANCE.get(); - if (manager == null) { - return getMeter().upDownCounterBuilder(name).build(); + if (manager == null || name == null) { + return NOOP_METER.upDownCounterBuilder("").build(); } return manager.upDownCounters.computeIfAbsent(name, n -> manager.meter.upDownCounterBuilder(n).build()); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/LDObserveArgumentsTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/LDObserveArgumentsTest.java new file mode 100644 index 0000000000..0fad5936de --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/LDObserveArgumentsTest.java @@ -0,0 +1,58 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.params.ParameterizedTest; +import org.junit.jupiter.params.provider.ValueSource; + +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertNotNull; + +/** + * LDObserve sits on application request paths, so a null argument must not + * throw into the caller, before or after the providers start. + */ +class LDObserveArgumentsTest { + + @BeforeEach + @AfterEach + void reset() { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + } + + @ParameterizedTest(name = "initialized={0}") + @ValueSource(booleans = {false, true}) + void nullArgumentsDoNotThrow(boolean initialized) { + if (initialized) { + OtelManager.initialize("sdk-test", new ObservabilityOptions.Builder() + .otlpEndpoint("https://otel.example.test:4318") + .backendUrl("https://backend.example.test") + .build()); + } + + assertDoesNotThrow(() -> LDObserve.recordMetric(null, 1.0, null)); + assertDoesNotThrow(() -> LDObserve.recordCount(null, 1, null)); + assertDoesNotThrow(() -> LDObserve.recordIncr(null, null)); + assertDoesNotThrow(() -> LDObserve.recordHistogram(null, 1.0, null)); + assertDoesNotThrow(() -> LDObserve.recordUpDownCounter(null, 1, null)); + assertDoesNotThrow(() -> LDObserve.recordMetric("gauge", 1.0, null)); + assertDoesNotThrow(() -> LDObserve.recordCount("count", 1, null)); + assertDoesNotThrow(() -> LDObserve.recordHistogram("histogram", 1.0, null)); + assertDoesNotThrow(() -> LDObserve.recordUpDownCounter("updown", 1, null)); + assertDoesNotThrow(() -> LDObserve.recordLog(null, null, null)); + assertDoesNotThrow(() -> LDObserve.recordLog("message", Severity.WARN, null)); + assertDoesNotThrow(() -> LDObserve.recordError(null, null)); + assertDoesNotThrow(() -> LDObserve.recordError(new RuntimeException(), null)); + assertDoesNotThrow(() -> { + Span span = LDObserve.startSpan(null, null); + assertNotNull(span); + span.end(); + }); + } +} From 5f24da7f3690f113db89c586357bba45e94a5fae Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:10:08 +0000 Subject: [PATCH 26/47] fix: keep one set of providers when several LDClients register the plugin The providers are process-wide and stamp every export with one SDK key, but each LDClient that registered the plugin started its own sampling fetch, so a second client for another environment silently replaced the first client's sampling rules. The first SDK key now owns the providers; a client with another key logs a warning and its plugin starts nothing, while its flag evaluations still record on the shared providers. A client with the same key shares them as before. The JVM shutdown hook is registered once for the process, so shutting down and starting again no longer adds a hook per restart, and the hook claims the current manager so it does not race LDObserve.shutdown() into a second shutdown. The README now explains the lifecycle. Co-Authored-By: Claude Opus 5.5 --- .../observability-java/README.md | 6 +++ .../observability/ObservabilityPlugin.java | 8 ++++ .../observability/internal/OtelManager.java | 46 ++++++++++++++++--- .../internal/OtelManagerTest.java | 23 ++++++++++ .../internal/PluginUserFlowTest.java | 28 +++++++++++ 5 files changed, 104 insertions(+), 7 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 352e430c38..9ddc6560ab 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -74,6 +74,12 @@ The plugin automatically: The plugin registers its SDK as `GlobalOpenTelemetry` when it can. When the global is already taken (the OpenTelemetry Java agent, your own SDK, a library that called `GlobalOpenTelemetry.get()` first, or `manualStart(true)` after such a call), the plugin keeps its own providers. Evaluation spans and everything sent through `LDObserve` still go to LaunchDarkly. The `feature_flag` event is added to whichever span is current, so it is exported by whoever owns that span. +### Lifecycle and multiple clients + +The OpenTelemetry providers are process-wide. The first `LDClient` that registers the plugin starts them and its SDK key identifies the project for everything exported. Another `LDClient` with the same SDK key shares them. An `LDClient` with a different SDK key logs a warning and its plugin starts nothing: its flag evaluations are still recorded, under the first client's SDK key. + +Closing an `LDClient` does not stop the providers. Call `LDObserve.shutdown()` when your application stops (for example after closing the client) to flush and stop them; the plugin also registers one JVM shutdown hook that does the same. + ## Manual Instrumentation Use `LDObserve` for custom telemetry: diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java index 31239e49db..a8e9efe782 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -82,6 +82,14 @@ public void register(LDClient client, EnvironmentMetadata metadata) { String sdkKey = metadata.getSdkKey(); + if (!OtelManager.registerClient(sdkKey)) { + log.warning("The observability plugin is already registered with an LDClient for another SDK key." + + " Its OpenTelemetry providers are shared by the whole process, so telemetry from this" + + " client, flag evaluations included, is exported under the first SDK key, and this" + + " plugin's options are ignored."); + return; + } + if (!options.isManualStart()) { OtelManager.initialize(sdkKey, options); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index e2138e7db2..84a05d2ef3 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -56,7 +56,12 @@ public final class OtelManager { // this no-op meter instead of throwing into the caller. private static final Meter NOOP_METER = OpenTelemetry.noop().getMeter(Constants.INSTRUMENTATION_SCOPE_NAME); + // Guarded by INIT_LOCK. One JVM shutdown hook for the process; it shuts + // down whichever manager is current, so a restart does not add another. private static Thread shutdownHook; + // Guarded by INIT_LOCK. The SDK key of the first LDClient that + // registered the plugin; the providers carry it as the project id. + private static String registeredSdkKey; private final SdkTracerProvider tracerProvider; private final SdkLoggerProvider loggerProvider; @@ -118,13 +123,32 @@ public static void initialize(String sdkKey, ObservabilityOptions options) { if (pending != null) { manager.customSampler.setConfig(pending); } - shutdownHook = new Thread(() -> { - OtelManager current = INSTANCE.get(); - if (current != null) { - current.shutdownProviders(); - } - }, "ld-observability-shutdown"); - Runtime.getRuntime().addShutdownHook(shutdownHook); + if (shutdownHook == null) { + shutdownHook = new Thread(() -> { + OtelManager current = INSTANCE.getAndSet(null); + if (current != null) { + current.shutdownProviders(); + } + }, "ld-observability-shutdown"); + Runtime.getRuntime().addShutdownHook(shutdownHook); + } + } + } + + /** + * Records that an {@code LDClient} with this SDK key is registering the + * plugin. The providers are process-wide and carry one project id, so + * only the first key is used: a later client with a different key gets + * {@code false}, and its plugin neither starts providers nor replaces the + * sampling configuration. A client with the same key gets {@code true}. + */ + public static boolean registerClient(String sdkKey) { + synchronized (INIT_LOCK) { + if (registeredSdkKey == null) { + registeredSdkKey = sdkKey; + return true; + } + return registeredSdkKey.equals(sdkKey); } } @@ -349,12 +373,19 @@ public static void shutdown() { OtelManager manager; synchronized (INIT_LOCK) { manager = INSTANCE.getAndSet(null); + registeredSdkKey = null; } if (manager != null) { manager.shutdownProviders(); } } + static Thread shutdownHookForTest() { + synchronized (INIT_LOCK) { + return shutdownHook; + } + } + static boolean isInitialized() { return INSTANCE.get() != null; } @@ -373,6 +404,7 @@ static void resetForTest() { synchronized (INIT_LOCK) { manager = INSTANCE.getAndSet(null); PENDING_SAMPLING_CONFIG.set(null); + registeredSdkKey = null; if (shutdownHook != null) { try { Runtime.getRuntime().removeShutdownHook(shutdownHook); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java index c18f92f312..6425b4b1e0 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java @@ -16,6 +16,7 @@ import java.util.concurrent.atomic.AtomicInteger; import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNotNull; import static org.junit.jupiter.api.Assertions.assertNotSame; import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertTrue; @@ -90,6 +91,28 @@ void instrumentsAreCachedByNamePerProvider() { "a restarted provider must not reuse instruments from the old one"); } + @Test + void restartKeepsOneShutdownHook() { + OtelManager.initialize("sdk-test", options()); + Thread hook = OtelManager.shutdownHookForTest(); + assertNotNull(hook); + + OtelManager.shutdown(); + OtelManager.initialize("sdk-test", options()); + + assertSame(hook, OtelManager.shutdownHookForTest(), "a restart must not register another JVM shutdown hook"); + } + + @Test + void onlyTheFirstSdkKeyRegistersUntilShutdown() { + assertTrue(OtelManager.registerClient("sdk-a")); + assertTrue(OtelManager.registerClient("sdk-a"), "another client for the same key shares the providers"); + assertFalse(OtelManager.registerClient("sdk-b")); + + OtelManager.shutdown(); + assertTrue(OtelManager.registerClient("sdk-b"), "after shutdown a new key can register"); + } + private static void assertEqualsZero(int failures) { assertTrue(failures == 0, "concurrent initialize failures: " + failures); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index 75cc467043..0a9445445d 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -103,6 +103,34 @@ void pluginExportsFlagEvaluationAndHonorsSamplingRules() throws Exception { } } + @Test + void secondClientWithAnotherSdkKeySharesTheFirstClientsProviders() throws Exception { + startCollector(); + LDConfig first = new LDConfig.Builder() + .offline(true) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options(false))))) + .build(); + LDConfig second = new LDConfig.Builder() + .offline(true) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options(false))))) + .build(); + + try (LDClient a = new LDClient("sdk-test", first)) { + assertTrue(waitForSamplingQuery(), "first client did not fetch sampling config"); + try (LDClient b = new LDClient("sdk-other", second)) { + b.boolVariation("second-client-flag", LDContext.create("user-b"), false); + LDObserve.flush(); + assertTrue(payloadContains(traces, "second-client-flag"), + "the second client's evaluations should still export on the shared providers"); + assertTrue(payloadContains(traces, "sdk-test"), "exports should carry the first SDK key"); + assertFalse(payloadContains(traces, "sdk-other"), "the second SDK key must not leak into exports"); + Thread.sleep(300); + assertEquals(1, samplingQueries.size(), + "the second client must not replace the first client's sampling config"); + } + } + } + @Test void manualStartKeepsSamplingConfigFetchedBeforeProvidersStart() throws Exception { startCollector(); From 9d2e9d0cc04945fc113a71f535dcf76e7e042226 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:11:06 +0000 Subject: [PATCH 27/47] build: keep LaunchDarkly artifacts out of the POM and state the SDK floor launchdarkly-java-server-sdk-otel 0.2.0 depends on launchdarkly-java-server-sdk 7.4.0, which has no Plugin class; if that copy won resolution the plugin failed with NoClassDefFoundError. The -otel dependency is already gone (the plugin records evaluations with its own hook); checkPublishedPom now fails if the POM names any com.launchdarkly artifact, so it cannot come back. The Plugin API first shipped in SDK 7.10.1. The README states that floor instead of 7.12.0 and drops the stale mention of the OTel tracing hook as a dependency. -PldServerSdkVersion=7.10.1 runs the tests against the floor; they pass on JDK 11. Co-Authored-By: Claude Opus 5.5 --- sdk/@launchdarkly/observability-java/README.md | 6 +++--- .../observability-java/lib/build.gradle | 16 ++++++++++++++-- 2 files changed, 17 insertions(+), 5 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 9ddc6560ab..8d0b584102 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -7,7 +7,7 @@ Official LaunchDarkly Observability plugin for the [Java Server SDK](https://git ## Requirements - Java 11+ -- LaunchDarkly Java Server SDK 7.12.0+ +- LaunchDarkly Java Server SDK 7.10.1+ (the first release with the plugin API). The plugin does not bring the SDK with it; declare it yourself. Older SDKs, such as the 7.4.0 that `launchdarkly-java-server-sdk-otel` 0.2.0 depends on, have no `Plugin` class and fail with `NoClassDefFoundError`. ## Installation @@ -36,7 +36,7 @@ dependencies { - `io.opentelemetry:opentelemetry-api` is a compile-scoped (`api`) dependency, because `LDObserve` and `ObservabilityOptions` take OpenTelemetry API types such as `Attributes` and `Severity`. You do not need to declare it yourself. - OTLP is sent over HTTP with OpenTelemetry's JDK sender, which uses `java.net.http.HttpClient`. The plugin does **not** pull OkHttp, Okio or the Kotlin standard library onto your classpath. The build fails if any of those leak in. -- The OpenTelemetry SDK, the LaunchDarkly OTel tracing hook and Gson are runtime dependencies. +- The OpenTelemetry SDK and Gson are runtime dependencies. The plugin records flag evaluations with its own hook and does not depend on `launchdarkly-java-server-sdk-otel` or on the LaunchDarkly SDK itself; the build fails if the POM ever names a LaunchDarkly artifact. ## Usage @@ -163,7 +163,7 @@ Levels are `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR`, `FATAL` and `NONE`, matchi ./gradlew :lib:publishToMavenLocal # then see ../../e2e/java-plugin for consumer and server examples ``` -`:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, or if the generated POM does not expose `opentelemetry-api` at compile scope. +`:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, if the generated POM does not expose `opentelemetry-api` at compile scope, or if it names a LaunchDarkly artifact. `./gradlew :lib:test -PldServerSdkVersion=7.10.1` runs the tests against the oldest supported SDK. The unit tests run the sampling scenarios shared with the Go, .NET, Python and Node SDKs (`lib/src/test/resources/sampling`, copied from `go/internal/otel`). `:lib:build` also fails if those copies drift from Go's; copy the files over when the scenarios change. diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index 0b38c69c41..5f85e661e8 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -17,7 +17,10 @@ java { ext { otelVersion = '1.51.0' - ldServerSdkVersion = '7.12.0' + // The SDK the plugin compiles and tests against. The plugin needs the + // Plugin API, which first shipped in 7.10.1; run the tests against that + // floor with -PldServerSdkVersion=7.10.1. + ldServerSdkVersion = project.findProperty('ldServerSdkVersion') ?: '7.12.0' } dependencies { @@ -89,7 +92,7 @@ tasks.register('checkRuntimeClasspath') { tasks.register('checkPublishedPom') { group = 'verification' - description = 'Checks the generated POM exposes opentelemetry-api at compile scope and carries no OkHttp.' + description = 'Checks the generated POM exposes opentelemetry-api at compile scope and carries no OkHttp or LaunchDarkly SDK.' dependsOn 'generatePomFileForReleasePublication' def pomFile = layout.buildDirectory.file('publications/release/pom-default.xml') doLast { @@ -105,6 +108,15 @@ tasks.register('checkPublishedPom') { if (okhttp.size() != 0) { throw new GradleException('The POM must not depend on opentelemetry-exporter-sender-okhttp') } + // The application brings its own LaunchDarkly SDK. Any SDK artifact in + // the POM (directly, or via launchdarkly-java-server-sdk-otel, which + // depends on 7.4.0) could win resolution with a version that has no + // Plugin class and fail with NoClassDefFoundError. + def ldSdk = deps.findAll { it.groupId.text() == 'com.launchdarkly' } + if (ldSdk.size() != 0) { + throw new GradleException('The POM must not depend on LaunchDarkly artifacts, found: ' + + ldSdk.collect { it.artifactId.text() }.join(', ')) + } def jdk = deps.find { it.artifactId.text() == 'opentelemetry-exporter-sender-jdk' } if (jdk.size() == 0 || jdk.scope.text() != 'runtime') { throw new GradleException('The POM must carry opentelemetry-exporter-sender-jdk at runtime scope') From ca8e984f07893895acc16243f41ad15212f89b34 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:13:28 +0000 Subject: [PATCH 28/47] fix: match sampling values by type, as the Go and .NET SDKs do Every match value was read with getAsString and every attribute compared through toString, so a numeric rule for 2 missed a double attribute 2.0, a boolean rule matched the string "true", a regex matched the text of a number, and an array match value threw and discarded the whole sampling payload. Match values now keep their JSON type: numbers compare numerically with the Go/.NET epsilon, booleans compare as booleans, regexes only match string values, and a string rule still matches the value's text. An array or object value never matches instead of throwing. An exact value takes precedence over a regex and an empty regex is unset, as in Go. Log message rules read the typed body (getBodyValue, replacing the deprecated getBody), and attribute maps are built once per record rather than once per rule. Co-Authored-By: Claude Opus 5.5 --- .../internal/SamplingApiService.java | 35 +++++++++-- .../internal/sampling/CustomSampler.java | 17 +++--- .../internal/sampling/SamplingConfig.java | 41 ++++++++++--- .../internal/SamplingConfigParsingTest.java | 61 +++++++++++++++++++ .../internal/sampling/CustomSamplerTest.java | 41 +++++++++++++ 5 files changed, 177 insertions(+), 18 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index c109c1ce58..1d03a63ede 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -4,6 +4,7 @@ import com.google.gson.JsonArray; import com.google.gson.JsonElement; import com.google.gson.JsonObject; +import com.google.gson.JsonPrimitive; import com.launchdarkly.observability.internal.sampling.SamplingConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.AttributeMatchConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.LogSamplingConfig; @@ -212,14 +213,40 @@ private static int ratioOrDefault(JsonObject obj) { return el.getAsInt(); } + /** + * Like Go, an exact value takes precedence over a regex, and an empty + * regex counts as unset. A config with neither is no filter. + */ private static MatchConfig parseMatchConfig(JsonObject obj) { if (obj == null) return null; - if (obj.has("regexValue") && !obj.get("regexValue").isJsonNull()) { - return MatchConfig.ofRegex(obj.get("regexValue").getAsString()); + JsonElement match = obj.get("matchValue"); + if (match != null && !match.isJsonNull()) { + return MatchConfig.ofValue(matchValue(match)); } - if (obj.has("matchValue") && !obj.get("matchValue").isJsonNull()) { - return MatchConfig.ofValue(obj.get("matchValue").getAsString()); + JsonElement regex = obj.get("regexValue"); + if (regex != null && regex.isJsonPrimitive() && !regex.getAsString().isEmpty()) { + return MatchConfig.ofRegex(regex.getAsString()); } return null; } + + /** + * Keeps the JSON type of a match value so a number matches a numeric + * attribute and a boolean a boolean, as in the Go and .NET SDKs. An array + * or object is kept as is and never matches, instead of throwing and + * losing the whole sampling payload. + */ + private static Object matchValue(JsonElement el) { + if (!el.isJsonPrimitive()) { + return el; + } + JsonPrimitive primitive = el.getAsJsonPrimitive(); + if (primitive.isBoolean()) { + return primitive.getAsBoolean(); + } + if (primitive.isNumber()) { + return primitive.getAsDouble(); + } + return primitive.getAsString(); + } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java index ab4fb46680..86675590b4 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/CustomSampler.java @@ -2,6 +2,7 @@ import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.common.Value; import io.opentelemetry.sdk.logs.data.LogRecordData; import io.opentelemetry.sdk.trace.data.EventData; import io.opentelemetry.sdk.trace.data.SpanData; @@ -105,8 +106,8 @@ private boolean matchesLogConfig(SamplingConfig.LogSamplingConfig config, LogRec } } if (config.getMessage() != null) { - String body = log.getBody() != null ? log.getBody().asString() : null; - if (!matchesValue(config.getMessage(), body)) { + Value body = log.getBodyValue(); + if (!matchesValue(config.getMessage(), body != null ? body.getValue() : null)) { return false; } } @@ -139,13 +140,15 @@ private boolean matchesEventConfig(SamplingConfig.SpanEventMatchConfig config, E } private boolean matchesAttributes(List configs, Attributes attributes) { + if (configs.isEmpty()) { + return true; + } + Map, Object> attrMap = attributes.asMap(); for (SamplingConfig.AttributeMatchConfig attrConfig : configs) { boolean found = false; - Map, Object> attrMap = attributes.asMap(); for (Map.Entry, Object> entry : attrMap.entrySet()) { - String key = entry.getKey().getKey(); - String value = entry.getValue() != null ? entry.getValue().toString() : null; - if (matchesValue(attrConfig.getKey(), key) && matchesValue(attrConfig.getAttribute(), value)) { + if (matchesValue(attrConfig.getKey(), entry.getKey().getKey()) + && matchesValue(attrConfig.getAttribute(), entry.getValue())) { found = true; break; } @@ -157,7 +160,7 @@ private boolean matchesAttributes(List conf return true; } - static boolean matchesValue(SamplingConfig.MatchConfig config, String actual) { + static boolean matchesValue(SamplingConfig.MatchConfig config, Object actual) { if (config == null) { return true; } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java index 8abf278dd3..ce8c9f7cca 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingConfig.java @@ -31,21 +31,31 @@ public String toString() { * A match config is either an exact value or a regular expression. * The pattern is compiled once so export-time matching does not recompile * it on every span or log. + * + *

Matching follows the Go and .NET SDKs: a numeric value matches a + * numeric attribute of equal value whether it is a long or a double, a + * boolean matches a boolean, a string matches the value's text, and a + * regex only matches string values.

*/ public static final class MatchConfig { private static final Logger log = Logger.getLogger(MatchConfig.class.getName()); + private static final double EPSILON = 0.0000000000000001; - private final String value; + private final Object value; private final String regexPattern; private final Pattern compiledRegex; - private MatchConfig(String value, String regexPattern, Pattern compiledRegex) { + private MatchConfig(Object value, String regexPattern, Pattern compiledRegex) { this.value = value; this.regexPattern = regexPattern; this.compiledRegex = compiledRegex; } - public static MatchConfig ofValue(String value) { + /** + * An exact-value match. The value is a {@link String}, a + * {@link Boolean} or a {@link Number}; any other type never matches. + */ + public static MatchConfig ofValue(Object value) { return new MatchConfig(value, null, null); } @@ -71,17 +81,34 @@ private static Pattern compile(String pattern) { } public boolean isRegex() { return regexPattern != null; } - public String getValue() { return value; } + public Object getValue() { return value; } public String getRegexPattern() { return regexPattern; } - public boolean matches(String actual) { + /** + * @param actual a span name, log body, attribute key or attribute + * value as recorded: String, Boolean, Long, Double or + * a list of those + */ + public boolean matches(Object actual) { if (actual == null) { return false; } if (regexPattern != null) { - return compiledRegex != null && compiledRegex.matcher(actual).find(); + return compiledRegex != null + && actual instanceof String + && compiledRegex.matcher((String) actual).find(); + } + if (value instanceof String) { + return value.equals(actual instanceof String ? actual : String.valueOf(actual)); + } + if (value instanceof Boolean) { + return value.equals(actual); + } + if (value instanceof Number) { + return actual instanceof Number + && Math.abs(((Number) value).doubleValue() - ((Number) actual).doubleValue()) < EPSILON; } - return value != null && value.equals(actual); + return false; } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java new file mode 100644 index 0000000000..595706a1b5 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java @@ -0,0 +1,61 @@ +package com.launchdarkly.observability.internal; + +import com.google.gson.JsonObject; +import com.google.gson.JsonParser; +import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.launchdarkly.observability.internal.sampling.SamplingConfig.MatchConfig; +import org.junit.jupiter.api.Test; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNull; +import static org.junit.jupiter.api.Assertions.assertTrue; + +class SamplingConfigParsingTest { + + @Test + void matchValuesKeepTheirJsonType() { + SamplingConfig config = parse("{\"spans\":[{\"attributes\":[" + + "{\"key\":{\"matchValue\":\"status\"},\"attribute\":{\"matchValue\":500}}," + + "{\"key\":{\"matchValue\":\"retry\"},\"attribute\":{\"matchValue\":true}}," + + "{\"key\":{\"matchValue\":\"route\"},\"attribute\":{\"matchValue\":\"/health\"}}" + + "],\"samplingRatio\":10}]}"); + + SamplingConfig.SpanSamplingConfig rule = config.getSpans().get(0); + assertEquals(500.0, rule.getAttributes().get(0).getAttribute().getValue()); + assertEquals(true, rule.getAttributes().get(1).getAttribute().getValue()); + assertEquals("/health", rule.getAttributes().get(2).getAttribute().getValue()); + assertTrue(rule.getAttributes().get(0).getAttribute().matches(500L)); + } + + @Test + void unsupportedMatchValueNeverMatchesAndKeepsTheRestOfThePayload() { + SamplingConfig config = parse("{\"spans\":[" + + "{\"name\":{\"matchValue\":[\"a\",\"b\"]},\"samplingRatio\":0}," + + "{\"name\":{\"matchValue\":\"health\"},\"samplingRatio\":0}" + + "],\"logs\":[{\"message\":{\"matchValue\":{\"nested\":1}},\"samplingRatio\":0}]}"); + + assertEquals(2, config.getSpans().size()); + assertFalse(config.getSpans().get(0).getName().matches("a")); + assertTrue(config.getSpans().get(1).getName().matches("health")); + assertEquals(1, config.getLogs().size()); + } + + @Test + void exactValueWinsOverRegexAndEmptyRegexIsNoFilter() { + SamplingConfig config = parse("{\"spans\":[" + + "{\"name\":{\"matchValue\":\"exact\",\"regexValue\":\".*\"},\"samplingRatio\":0}," + + "{\"name\":{\"matchValue\":null,\"regexValue\":\"\"},\"samplingRatio\":0}" + + "]}"); + + MatchConfig both = config.getSpans().get(0).getName(); + assertFalse(both.isRegex()); + assertFalse(both.matches("other")); + assertNull(config.getSpans().get(1).getName(), "an empty regex is treated as unset"); + } + + private static SamplingConfig parse(String sampling) { + JsonObject json = JsonParser.parseString(sampling).getAsJsonObject(); + return SamplingApiService.parseSamplingConfig(json); + } +} diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java index 459cadfac1..b21ac5beca 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/CustomSamplerTest.java @@ -302,6 +302,47 @@ void sampleLogFirstMatchingRuleWins() { assertEquals(100L, other.getAttributes().get(AttributeKey.longKey("launchdarkly.sampling.ratio"))); } + @Test + void matchValuesCompareByTypeLikeGoAndDotNet() { + SamplingConfig.MatchConfig number = SamplingConfig.MatchConfig.ofValue(2.0); + assertTrue(number.matches(2L), "a JSON number matches a long attribute of equal value"); + assertTrue(number.matches(2.0d)); + assertFalse(number.matches(3L)); + assertFalse(number.matches("2"), "a number does not match a string"); + + SamplingConfig.MatchConfig bool = SamplingConfig.MatchConfig.ofValue(true); + assertTrue(bool.matches(true)); + assertFalse(bool.matches(false)); + assertFalse(bool.matches("true"), "a boolean does not match a string"); + + SamplingConfig.MatchConfig text = SamplingConfig.MatchConfig.ofValue("503"); + assertTrue(text.matches("503")); + assertTrue(text.matches(503L), "a string matches the value's text"); + + SamplingConfig.MatchConfig regex = SamplingConfig.MatchConfig.ofRegex("^5"); + assertTrue(regex.matches("503")); + assertFalse(regex.matches(503L), "a regex only matches string values"); + + assertFalse(SamplingConfig.MatchConfig.ofValue(List.of("a")).matches("a"), + "an unsupported value type never matches"); + } + + @Test + void numericRuleMatchesDoubleAttributeOfIntegralValue() { + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(new SamplingConfig(List.of(new SamplingConfig.SpanSamplingConfig(null, + List.of(new SamplingConfig.AttributeMatchConfig( + SamplingConfig.MatchConfig.ofValue("load"), SamplingConfig.MatchConfig.ofValue(2.0))), + Collections.emptyList(), 0)), Collections.emptyList())); + + assertFalse(sampler.sampleSpan(createTestSpan("s", Attributes.of(AttributeKey.doubleKey("load"), 2.0))) + .isSampled()); + assertFalse(sampler.sampleSpan(createTestSpan("s", Attributes.of(AttributeKey.longKey("load"), 2L))) + .isSampled()); + assertTrue(sampler.sampleSpan(createTestSpan("s", Attributes.of(AttributeKey.doubleKey("load"), 2.5))) + .isSampled()); + } + private static SamplingConfig logConfig(SamplingConfig.LogSamplingConfig rule) { return new SamplingConfig(Collections.emptyList(), List.of(rule)); } From 2a43c1d3257c152e852efe71e1fcbadd5748da55 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:14:51 +0000 Subject: [PATCH 29/47] fix: keep telemetry when sampling fails instead of throwing Log sampling runs inside LDObserve.recordLog on the caller's thread. A backend regex such as ^(a|b)*c recurses per character in java.util.regex, so a long log message threw StackOverflowError straight into the application's request. In the span exporter a sampling failure lost the whole batch. Both now fail open: the record or batch is exported unsampled and the failure is logged once. The log processor also stops copying every attribute to add the sampling ratio, and reads the record once. Co-Authored-By: Claude Opus 5.5 --- .../sampling/SamplingLogProcessor.java | 31 +++++-- .../sampling/SamplingTraceExporter.java | 17 +++- .../sampling/SamplingFailureTest.java | 87 +++++++++++++++++++ 3 files changed, 127 insertions(+), 8 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingFailureTest.java diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java index e864f54710..5f5bec3f86 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingLogProcessor.java @@ -1,19 +1,30 @@ package com.launchdarkly.observability.internal.sampling; -import io.opentelemetry.api.common.Attributes; import io.opentelemetry.context.Context; import io.opentelemetry.sdk.common.CompletableResultCode; import io.opentelemetry.sdk.logs.LogRecordProcessor; import io.opentelemetry.sdk.logs.ReadWriteLogRecord; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.logging.Level; +import java.util.logging.Logger; + /** * A {@link LogRecordProcessor} that applies sampling logic before delegating * to another processor. + * + *

{@code onEmit} runs on the thread that logged, usually a request thread, + * so a sampling failure (for example a regex that overflows the stack on a + * long message) is logged once and the record is kept rather than thrown + * into the caller.

*/ public final class SamplingLogProcessor implements LogRecordProcessor { + private static final Logger log = Logger.getLogger(SamplingLogProcessor.class.getName()); + private final LogRecordProcessor delegate; private final CustomSampler sampler; + private final AtomicBoolean failureLogged = new AtomicBoolean(); public SamplingLogProcessor(LogRecordProcessor delegate, CustomSampler sampler) { this.delegate = delegate; @@ -27,17 +38,23 @@ public void onEmit(Context context, ReadWriteLogRecord logRecord) { return; } - CustomSampler.SamplingResult result = sampler.sampleLog(logRecord.toLogRecordData()); + CustomSampler.SamplingResult result; + try { + result = sampler.sampleLog(logRecord.toLogRecordData()); + } catch (RuntimeException | StackOverflowError e) { + if (failureLogged.compareAndSet(false, true)) { + log.log(Level.WARNING, "Log sampling failed; exporting records unsampled", e); + } + delegate.onEmit(context, logRecord); + return; + } if (!result.isSampled()) { return; } if (result.getAttributes() != null) { - Attributes merged = Attributes.builder() - .putAll(logRecord.toLogRecordData().getAttributes()) - .putAll(result.getAttributes()) - .build(); - logRecord.setAllAttributes(merged); + // Sets or overrides only the sampling attributes. + logRecord.setAllAttributes(result.getAttributes()); } delegate.onEmit(context, logRecord); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java index da08237723..30937275f1 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/sampling/SamplingTraceExporter.java @@ -17,6 +17,9 @@ import java.util.HashMap; import java.util.List; import java.util.Map; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.logging.Level; +import java.util.logging.Logger; /** * A {@link SpanExporter} that applies sampling logic before delegating to another exporter. @@ -26,8 +29,11 @@ */ public final class SamplingTraceExporter implements SpanExporter { + private static final Logger log = Logger.getLogger(SamplingTraceExporter.class.getName()); + private final SpanExporter delegate; private final CustomSampler sampler; + private final AtomicBoolean failureLogged = new AtomicBoolean(); public SamplingTraceExporter(SpanExporter delegate, CustomSampler sampler) { this.delegate = delegate; @@ -36,7 +42,16 @@ public SamplingTraceExporter(SpanExporter delegate, CustomSampler sampler) { @Override public CompletableResultCode export(Collection spans) { - List sampled = sampleSpans(spans); + List sampled; + try { + sampled = sampleSpans(spans); + } catch (RuntimeException | StackOverflowError e) { + // Losing the batch would be worse than exporting it unsampled. + if (failureLogged.compareAndSet(false, true)) { + log.log(Level.WARNING, "Span sampling failed; exporting the batch unsampled", e); + } + sampled = new ArrayList<>(spans); + } if (sampled.isEmpty()) { return CompletableResultCode.ofSuccess(); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingFailureTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingFailureTest.java new file mode 100644 index 0000000000..1c4cb51b65 --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/sampling/SamplingFailureTest.java @@ -0,0 +1,87 @@ +package com.launchdarkly.observability.internal.sampling; + +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.trace.SpanContext; +import io.opentelemetry.api.trace.SpanKind; +import io.opentelemetry.api.trace.TraceFlags; +import io.opentelemetry.api.trace.TraceId; +import io.opentelemetry.api.trace.SpanId; +import io.opentelemetry.api.trace.TraceState; +import io.opentelemetry.sdk.logs.SdkLoggerProvider; +import io.opentelemetry.sdk.logs.export.SimpleLogRecordProcessor; +import io.opentelemetry.sdk.testing.exporter.InMemoryLogRecordExporter; +import io.opentelemetry.sdk.testing.exporter.InMemorySpanExporter; +import io.opentelemetry.sdk.testing.trace.TestSpanData; +import io.opentelemetry.sdk.trace.data.SpanData; +import io.opentelemetry.sdk.trace.data.StatusData; +import org.junit.jupiter.api.Test; + +import java.util.Collections; +import java.util.List; + +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertEquals; + +/** + * Sampling runs on application threads (logs) and in the export path + * (spans). A failure there must keep the telemetry instead of throwing into + * the caller or losing the batch. + */ +class SamplingFailureTest { + + @Test + void logSamplingThatOverflowsTheStackKeepsTheRecordAndDoesNotThrow() { + // (a|b)* recurses once per character in java.util.regex. + CustomSampler sampler = new CustomSampler(ratio -> false); + sampler.setConfig(new SamplingConfig(Collections.emptyList(), List.of( + new SamplingConfig.LogSamplingConfig( + SamplingConfig.MatchConfig.ofRegex("^(a|b)*c"), null, Collections.emptyList(), 0)))); + InMemoryLogRecordExporter exported = InMemoryLogRecordExporter.create(); + SdkLoggerProvider provider = SdkLoggerProvider.builder() + .addLogRecordProcessor(new SamplingLogProcessor(SimpleLogRecordProcessor.create(exported), sampler)) + .build(); + Logger logger = provider.get("test"); + + String longMessage = "ab".repeat(200_000); + assertDoesNotThrow(() -> logger.logRecordBuilder().setBody(longMessage).emit()); + logger.logRecordBuilder().setBody("abc").emit(); + + assertEquals(1, exported.getFinishedLogRecordItems().stream() + .filter(r -> r.getBodyValue().asString().equals(longMessage)).count(), + "a record the sampler could not evaluate is exported unsampled"); + assertEquals(1, exported.getFinishedLogRecordItems().size(), "a matching record is still dropped"); + provider.close(); + } + + @Test + void spanSamplingFailureExportsTheBatchUnsampled() { + CustomSampler sampler = new CustomSampler(ratio -> { + throw new IllegalStateException("sampler bug"); + }); + sampler.setConfig(new SamplingConfig(List.of(new SamplingConfig.SpanSamplingConfig( + SamplingConfig.MatchConfig.ofValue("checkout"), Collections.emptyList(), Collections.emptyList(), 2)), + Collections.emptyList())); + InMemorySpanExporter exported = InMemorySpanExporter.create(); + SamplingTraceExporter exporter = new SamplingTraceExporter(exported, sampler); + + assertDoesNotThrow(() -> exporter.export(List.of(span("checkout"), span("other")))); + + assertEquals(2, exported.getFinishedSpanItems().size()); + } + + private static SpanData span(String name) { + return TestSpanData.builder() + .setName(name) + .setKind(SpanKind.INTERNAL) + .setSpanContext(SpanContext.create( + TraceId.fromLongs(0, 1), SpanId.fromLong(name.hashCode() | 1L), + TraceFlags.getSampled(), TraceState.getDefault())) + .setStatus(StatusData.unset()) + .setHasEnded(true) + .setStartEpochNanos(0) + .setEndEpochNanos(1) + .setAttributes(Attributes.empty()) + .build(); + } +} From b420dc49472c1ad8583b48368b3fcad6e59f7805 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:16:32 +0000 Subject: [PATCH 30/47] test: cover the Java plugin in the pytest e2e suite test_sdk.py had no Java cases. A java_app fixture publishes the plugin to Maven local, builds the Spring Boot example against it, and runs the jar exporting to the local backend as project 1. test_java_logs, test_java_traces and test_java_error check, as the .NET cases do, that the request log, the request span with its child flag-evaluation span, and the recorded exception arrive with the right service, version and distro. run_and_poll gains an optional env. Co-Authored-By: Claude Opus 5.5 --- e2e/tests/src/app_runner.py | 3 +- e2e/tests/src/conftest.py | 61 +++++++++++++++++++ e2e/tests/src/test_sdk.py | 115 ++++++++++++++++++++++++++++++++++++ 3 files changed, 178 insertions(+), 1 deletion(-) diff --git a/e2e/tests/src/app_runner.py b/e2e/tests/src/app_runner.py index 8185498ef8..9e76eb3336 100644 --- a/e2e/tests/src/app_runner.py +++ b/e2e/tests/src/app_runner.py @@ -45,10 +45,11 @@ def run_and_poll( request: Optional[Callable[[], requests.Response]], pre: Optional[Callable[[], None]] = None, cwd: Optional[str] = None, + env: Optional[dict[str, str]] = None, ): if pre: pre() - proc = run(node_bin, args, cwd=cwd) + proc = run(node_bin, args, cwd=cwd, env=env) try: for _ in range(60): try: diff --git a/e2e/tests/src/conftest.py b/e2e/tests/src/conftest.py index 94f18870ba..7fcd2b213b 100644 --- a/e2e/tests/src/conftest.py +++ b/e2e/tests/src/conftest.py @@ -1,3 +1,4 @@ +import glob import logging import os import subprocess @@ -131,3 +132,63 @@ def dotnet_app(dotnet_bin): lambda: requests.get("http://localhost:5249/"), cwd="dotnet", ) + + +@pytest.fixture(scope="session") +def java_bin(): + stdout = subprocess.check_output(["which", "java"], text=True, env=os.environ) + return os.path.realpath(os.path.dirname(stdout)) + + +JAVA_APP_PORT = 8090 + + +@pytest.fixture() +def java_app(java_bin): + """The Spring Boot backend in e2e/java-plugin-spring-boot, built against + the plugin from source and exporting to the local backend as project 1.""" + sdk_dir = "../sdk/@launchdarkly/observability-java" + app_dir = "java-plugin-spring-boot" + + def build(): + for args in ( + [f"{sdk_dir}/gradlew", "-p", sdk_dir, ":lib:publishToMavenLocal"], + [f"{sdk_dir}/gradlew", "-p", app_dir, "bootJar", "-PuseMavenLocal"], + ): + proc = run(java_bin, args + ["--no-daemon", "--console=plain"]) + stdout, stderr = proc.communicate() + logging.info("java build output") + for line in stdout.splitlines(): + logging.info(line) + for line in stderr.splitlines(): + logging.info(line) + assert not proc.returncode, stderr + + def app_jar(): + e2e_dir = os.path.realpath( + os.path.join(__file__, os.pardir, os.pardir, os.pardir) + ) + jars = [ + j + for j in glob.glob(f"{e2e_dir}/{app_dir}/build/libs/*.jar") + if not j.endswith("-plain.jar") + ] + assert len(jars) == 1, jars + return jars[0] + + build() + yield from run_and_poll( + java_bin, + ["java", "-jar", app_jar()], + lambda: requests.get(f"http://localhost:{JAVA_APP_PORT}/actuator/health"), + env={ + "PORT": str(JAVA_APP_PORT), + # The plugin reports the SDK key as the project id; the local + # backend's project is 1. The flag SDK cannot connect with this + # key and serves flag defaults, which the tests expect. + "LAUNCHDARKLY_SDK_KEY": "1", + "OTEL_EXPORTER_OTLP_ENDPOINT": "http://localhost:4318", + "LD_OBSERVABILITY_BACKEND_URL": "http://localhost:8082/public", + "SERVICE_VERSION": "e2e", + }, + ) diff --git a/e2e/tests/src/test_sdk.py b/e2e/tests/src/test_sdk.py index 57c87ff229..559c50d8a4 100644 --- a/e2e/tests/src/test_sdk.py +++ b/e2e/tests/src/test_sdk.py @@ -362,3 +362,118 @@ def validator_traces(data: dict[str, any]): }, validator=validator_traces, ) + + +JAVA_SERVICE = "java-plugin-spring-boot-example" + + +def _date_range(start, ts): + return { + "start_date": f'{start.isoformat(timespec="microseconds")}000-00:00', + "end_date": f'{ts.isoformat(timespec="microseconds")}000-00:00', + } + + +def test_java_logs(java_app, oauth_api): + start = datetime.utcnow() - timedelta(minutes=1) + r = requests.get( + "http://localhost:8090/rolldice", headers={"X-User-Key": "e2e-java"}, timeout=30 + ) + logging.info(f"GET {r.url} {r.status_code} {r.text}") + assert r.ok + + def validator(data: dict[str, any]): + logs = [ + e["node"] + for e in data["logs"]["edges"] + if e["node"]["message"] == "GET /rolldice -> 200" + ] + assert logs, f"no rolldice log in {data['logs']['edges']}" + for log in logs: + assert log["level"] == "info" + assert log["serviceName"] == JAVA_SERVICE + assert log["serviceVersion"] == "e2e" + + query( + oauth_api, + "GetLogs", + GET_LOGS, + variables_fn=lambda ts: { + "project_id": "1", + "direction": "DESC", + "params": { + "query": "telemetry.sdk.language=java", + "date_range": _date_range(start, ts), + }, + }, + validator=validator, + ) + + +def test_java_traces(java_app, oauth_api): + start = datetime.utcnow() - timedelta(minutes=1) + r = requests.get( + "http://localhost:8090/rolldice", headers={"X-User-Key": "e2e-java"}, timeout=30 + ) + logging.info(f"GET {r.url} {r.status_code} {r.text}") + assert r.ok + + def validator(data: dict[str, any]): + spans = {e["node"]["spanName"]: e["node"] for e in data["traces"]["edges"]} + # The request span from LDObserve.startSpan and the flag evaluation + # span from the plugin's hook, which is its child. + for name in ("GET /rolldice", "LDClient.intVariation"): + assert name in spans, f"{name} not in {list(spans)}" + node = spans[name] + assert node["projectID"] == 1 + assert node["serviceName"] == JAVA_SERVICE + assert node["serviceVersion"] == "e2e" + assert ( + node["traceAttributes"]["telemetry"]["distro"]["name"] + == "com.launchdarkly.observability" + ) + evaluation = spans["LDClient.intVariation"] + assert evaluation["traceID"] == spans["GET /rolldice"]["traceID"] + assert evaluation["parentSpanID"] == spans["GET /rolldice"]["spanID"] + + query( + oauth_api, + "GetTraces", + GET_TRACES, + variables_fn=lambda ts: { + "project_id": "1", + "direction": "DESC", + "params": { + "query": "telemetry.sdk.language=java", + "date_range": _date_range(start, ts), + }, + }, + validator=validator, + ) + + +def test_java_error(java_app, oauth_api): + start = datetime.utcnow() - timedelta(minutes=1) + r = requests.get( + "http://localhost:8090/error", headers={"X-User-Key": "e2e-java"}, timeout=30 + ) + logging.info(f"GET {r.url} {r.status_code} {r.text}") + assert r.status_code == 500 + + def validator(data: dict[str, any]): + events = {eg["event"][0] for eg in data["error_groups"]["error_groups"]} + assert "random error from the Spring Boot example" in events, events + + query( + oauth_api, + "GetErrorGroups", + GET_ERROR_GROUPS, + variables_fn=lambda ts: { + "params": {"query": "", "date_range": _date_range(start, ts)}, + "count": 10, + "page": 1, + "project_id": "1", + "sort_desc": False, + }, + validator=validator, + ) From abb3e083e63aae54848c4d8ce1e3659f4af84d2e Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:18:31 +0000 Subject: [PATCH 31/47] build: parse sampling JSON with LDValue and drop the Gson dependency The plugin still put Gson 2.11 on every server classpath unshaded, the same kind of version clash the LaunchDarkly SDK avoids by shading its own Gson. The GraphQL request and the sampling payload now go through the SDK's public LDValue, which the application already has, so OpenTelemetry is the only thing the plugin brings. checkPublishedPom fails if the POM names anything outside io.opentelemetry. Gson stays a test dependency for reading the shared scenario fixtures. Co-Authored-By: Claude Opus 5.5 --- .../observability-java/README.md | 4 +- .../observability-java/lib/build.gradle | 15 +- .../observability/internal/GraphQLClient.java | 45 +++-- .../internal/SamplingApiService.java | 161 ++++++++---------- .../internal/GraphQLClientTest.java | 4 +- .../internal/SamplingConfigParsingTest.java | 6 +- .../internal/SamplingScenariosTest.java | 5 +- 7 files changed, 115 insertions(+), 125 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 8d0b584102..056aaab1ec 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -36,7 +36,7 @@ dependencies { - `io.opentelemetry:opentelemetry-api` is a compile-scoped (`api`) dependency, because `LDObserve` and `ObservabilityOptions` take OpenTelemetry API types such as `Attributes` and `Severity`. You do not need to declare it yourself. - OTLP is sent over HTTP with OpenTelemetry's JDK sender, which uses `java.net.http.HttpClient`. The plugin does **not** pull OkHttp, Okio or the Kotlin standard library onto your classpath. The build fails if any of those leak in. -- The OpenTelemetry SDK and Gson are runtime dependencies. The plugin records flag evaluations with its own hook and does not depend on `launchdarkly-java-server-sdk-otel` or on the LaunchDarkly SDK itself; the build fails if the POM ever names a LaunchDarkly artifact. +- The OpenTelemetry SDK and exporters are runtime dependencies, and they are the only ones: JSON is handled with the LaunchDarkly SDK's own `LDValue`, so no Gson or other JSON library is added. The plugin records flag evaluations with its own hook and does not depend on `launchdarkly-java-server-sdk-otel` or on the LaunchDarkly SDK itself. The build fails if the POM names anything outside `io.opentelemetry`. ## Usage @@ -163,7 +163,7 @@ Levels are `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR`, `FATAL` and `NONE`, matchi ./gradlew :lib:publishToMavenLocal # then see ../../e2e/java-plugin for consumer and server examples ``` -`:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, if the generated POM does not expose `opentelemetry-api` at compile scope, or if it names a LaunchDarkly artifact. `./gradlew :lib:test -PldServerSdkVersion=7.10.1` runs the tests against the oldest supported SDK. +`:lib:build` fails if OkHttp, Okio or Kotlin appear on the runtime classpath, if the generated POM does not expose `opentelemetry-api` at compile scope, or if it names anything outside `io.opentelemetry`. `./gradlew :lib:test -PldServerSdkVersion=7.10.1` runs the tests against the oldest supported SDK. The unit tests run the sampling scenarios shared with the Go, .NET, Python and Node SDKs (`lib/src/test/resources/sampling`, copied from `go/internal/otel`). `:lib:build` also fails if those copies drift from Go's; copy the files over when the scenarios change. diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index 5f85e661e8..42a8af8659 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -44,15 +44,15 @@ dependencies { } runtimeOnly "io.opentelemetry:opentelemetry-exporter-sender-jdk:${otelVersion}" - // JSON parsing - implementation 'com.google.code.gson:gson:2.11.0' - // Testing testImplementation "com.launchdarkly:launchdarkly-java-server-sdk:${ldServerSdkVersion}" testImplementation platform('org.junit:junit-bom:5.13.4') testImplementation 'org.junit.jupiter:junit-jupiter' testRuntimeOnly 'org.junit.platform:junit-platform-launcher' testImplementation "io.opentelemetry:opentelemetry-sdk-testing:${otelVersion}" + // Only the tests read the shared scenario fixtures with Gson. The plugin + // parses JSON with the LaunchDarkly SDK's LDValue. + testImplementation 'com.google.code.gson:gson:2.11.0' } tasks.withType(Test).configureEach { @@ -92,7 +92,7 @@ tasks.register('checkRuntimeClasspath') { tasks.register('checkPublishedPom') { group = 'verification' - description = 'Checks the generated POM exposes opentelemetry-api at compile scope and carries no OkHttp or LaunchDarkly SDK.' + description = 'Checks the generated POM exposes opentelemetry-api at compile scope and depends on nothing but OpenTelemetry.' dependsOn 'generatePomFileForReleasePublication' def pomFile = layout.buildDirectory.file('publications/release/pom-default.xml') doLast { @@ -117,6 +117,13 @@ tasks.register('checkPublishedPom') { throw new GradleException('The POM must not depend on LaunchDarkly artifacts, found: ' + ldSdk.collect { it.artifactId.text() }.join(', ')) } + // OpenTelemetry is the only third-party dependency a server + // application inherits from the plugin. + def foreign = deps.findAll { it.groupId.text() != 'io.opentelemetry' } + if (foreign.size() != 0) { + throw new GradleException('The POM may only depend on io.opentelemetry artifacts, found: ' + + foreign.collect { "${it.groupId.text()}:${it.artifactId.text()}" }.join(', ')) + } def jdk = deps.find { it.artifactId.text() == 'opentelemetry-exporter-sender-jdk' } if (jdk.size() == 0 || jdk.scope.text() != 'runtime') { throw new GradleException('The POM must carry opentelemetry-exporter-sender-jdk at runtime scope') diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java index 4a94893961..3fd1dc00cc 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/GraphQLClient.java @@ -1,8 +1,8 @@ package com.launchdarkly.observability.internal; -import com.google.gson.Gson; -import com.google.gson.JsonElement; -import com.google.gson.JsonObject; +import com.launchdarkly.sdk.LDValue; +import com.launchdarkly.sdk.LDValueType; +import com.launchdarkly.sdk.ObjectBuilder; import java.io.ByteArrayOutputStream; import java.io.IOException; @@ -20,7 +20,11 @@ import java.util.zip.GZIPOutputStream; /** - * Minimal GraphQL client on {@link HttpClient} (Java 11) and Gson. + * Minimal GraphQL client on {@link HttpClient} (Java 11). + * + *

JSON goes through the LaunchDarkly SDK's {@link LDValue}, which the + * application already has, so the plugin adds no JSON library to a server + * classpath.

* *

Uses the same HTTP stack as the OTLP exporters, so proxy settings and * custom headers behave the same for the sampling request as for exports. @@ -31,7 +35,6 @@ public final class GraphQLClient { private static final Logger log = Logger.getLogger(GraphQLClient.class.getName()); private static final Duration CONNECT_TIMEOUT = Duration.ofSeconds(10); private static final Duration REQUEST_TIMEOUT = Duration.ofSeconds(10); - private static final Gson GSON = new Gson(); private final URI endpoint; private final Map headers; @@ -67,14 +70,20 @@ public GraphQLClient(String backendUrl, Map headers, ProxySelect * * @param query the GraphQL query string * @param variables query variables - * @return the "data" JSON element from the response, or null on error + * @return the "data" object from the response, or null on error */ - public JsonElement execute(String query, Map variables) throws IOException { - JsonObject body = new JsonObject(); - body.addProperty("query", query); - body.add("variables", GSON.toJsonTree(variables)); + public LDValue execute(String query, Map variables) throws IOException { + ObjectBuilder vars = LDValue.buildObject(); + for (Map.Entry variable : variables.entrySet()) { + vars.put(variable.getKey(), variable.getValue()); + } + String body = LDValue.buildObject() + .put("query", query) + .put("variables", vars.build()) + .build() + .toJsonString(); - byte[] payload = gzip(GSON.toJson(body).getBytes(StandardCharsets.UTF_8)); + byte[] payload = gzip(body.getBytes(StandardCharsets.UTF_8)); HttpRequest.Builder request = HttpRequest.newBuilder(endpoint) .timeout(REQUEST_TIMEOUT) @@ -99,15 +108,17 @@ public JsonElement execute(String query, Map variables) throws I return null; } - JsonObject envelope = GSON.fromJson(response.body(), JsonObject.class); - if (envelope == null) { - log.warning("GraphQL response had no body"); + LDValue envelope = LDValue.parse(response.body()); + if (envelope.getType() != LDValueType.OBJECT) { + log.warning("GraphQL response was not a JSON object"); return null; } - if (envelope.has("errors") && !envelope.getAsJsonArray("errors").isEmpty()) { - log.warning("GraphQL errors: " + envelope.getAsJsonArray("errors")); + LDValue errors = envelope.get("errors"); + if (errors.size() > 0) { + log.warning("GraphQL errors: " + errors.toJsonString()); } - return envelope.has("data") ? envelope.get("data") : null; + LDValue data = envelope.get("data"); + return data.getType() == LDValueType.OBJECT ? data : null; } private static byte[] gzip(byte[] data) throws IOException { diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index 1d03a63ede..a77c075e0b 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -1,22 +1,17 @@ package com.launchdarkly.observability.internal; -import com.google.gson.Gson; -import com.google.gson.JsonArray; -import com.google.gson.JsonElement; -import com.google.gson.JsonObject; -import com.google.gson.JsonPrimitive; import com.launchdarkly.observability.internal.sampling.SamplingConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.AttributeMatchConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.LogSamplingConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.MatchConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.SpanEventMatchConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.SpanSamplingConfig; +import com.launchdarkly.sdk.LDValue; +import com.launchdarkly.sdk.LDValueType; import java.util.ArrayList; import java.util.Collections; -import java.util.HashMap; import java.util.List; -import java.util.Map; import java.util.logging.Level; import java.util.logging.Logger; @@ -101,13 +96,11 @@ public SamplingApiService(GraphQLClient client) { */ public SamplingConfig getSamplingConfig(String sdkKey) { try { - Map variables = new HashMap<>(); - variables.put("organization_verbose_id", sdkKey); - JsonElement data = client.execute(QUERY, variables); - if (data == null || !data.isJsonObject()) { + LDValue data = client.execute(QUERY, Collections.singletonMap("organization_verbose_id", sdkKey)); + if (data == null) { return null; } - JsonObject sampling = objectOrNull(data.getAsJsonObject(), "sampling"); + LDValue sampling = objectOrNull(data, "sampling"); if (sampling == null) { return null; } @@ -119,68 +112,44 @@ public SamplingConfig getSamplingConfig(String sdkKey) { } /** Parses the {@code sampling} object of the GraphQL response. Visible for the shared scenario tests. */ - static SamplingConfig parseSamplingConfig(JsonObject sampling) { + static SamplingConfig parseSamplingConfig(LDValue sampling) { List spans = new ArrayList<>(); - List logs = new ArrayList<>(); - - JsonArray spansArray = arrayOrNull(sampling, "spans"); - if (spansArray != null) { - for (JsonElement el : spansArray) { - if (el.isJsonObject()) { - spans.add(parseSpanConfig(el.getAsJsonObject())); - } - } + for (LDValue el : objects(sampling.get("spans"))) { + spans.add(parseSpanConfig(el)); } - - JsonArray logsArray = arrayOrNull(sampling, "logs"); - if (logsArray != null) { - for (JsonElement el : logsArray) { - if (el.isJsonObject()) { - logs.add(parseLogConfig(el.getAsJsonObject())); - } - } + List logs = new ArrayList<>(); + for (LDValue el : objects(sampling.get("logs"))) { + logs.add(parseLogConfig(el)); } - return new SamplingConfig(spans, logs); } - private static SpanSamplingConfig parseSpanConfig(JsonObject obj) { - MatchConfig name = parseMatchConfig(objectOrNull(obj, "name")); - List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); + private static SpanSamplingConfig parseSpanConfig(LDValue obj) { List events = new ArrayList<>(); - - JsonArray eventsArray = arrayOrNull(obj, "events"); - if (eventsArray != null) { - for (JsonElement el : eventsArray) { - if (!el.isJsonObject()) { - continue; - } - JsonObject eventObj = el.getAsJsonObject(); - events.add(new SpanEventMatchConfig( - parseMatchConfig(objectOrNull(eventObj, "name")), - parseAttributeConfigs(arrayOrNull(eventObj, "attributes")) - )); - } + for (LDValue event : objects(obj.get("events"))) { + events.add(new SpanEventMatchConfig( + parseMatchConfig(objectOrNull(event, "name")), + parseAttributeConfigs(event.get("attributes")) + )); } - - return new SpanSamplingConfig(name, attributes, events, ratioOrDefault(obj)); + return new SpanSamplingConfig( + parseMatchConfig(objectOrNull(obj, "name")), + parseAttributeConfigs(obj.get("attributes")), + events, + ratioOrDefault(obj)); } - private static LogSamplingConfig parseLogConfig(JsonObject obj) { - MatchConfig message = parseMatchConfig(objectOrNull(obj, "message")); - MatchConfig severityText = parseMatchConfig(objectOrNull(obj, "severityText")); - List attributes = parseAttributeConfigs(arrayOrNull(obj, "attributes")); - return new LogSamplingConfig(message, severityText, attributes, ratioOrDefault(obj)); + private static LogSamplingConfig parseLogConfig(LDValue obj) { + return new LogSamplingConfig( + parseMatchConfig(objectOrNull(obj, "message")), + parseMatchConfig(objectOrNull(obj, "severityText")), + parseAttributeConfigs(obj.get("attributes")), + ratioOrDefault(obj)); } - private static List parseAttributeConfigs(JsonArray array) { - if (array == null) return Collections.emptyList(); + private static List parseAttributeConfigs(LDValue array) { List result = new ArrayList<>(); - for (JsonElement el : array) { - if (!el.isJsonObject()) { - continue; - } - JsonObject obj = el.getAsJsonObject(); + for (LDValue obj : objects(array)) { result.add(new AttributeMatchConfig( parseMatchConfig(objectOrNull(obj, "key")), parseMatchConfig(objectOrNull(obj, "attribute")) @@ -190,42 +159,47 @@ private static List parseAttributeConfigs(JsonArray array) } /** - * GraphQL returns {@code null} for optional fields that are unset, and - * Gson's {@code getAsJsonObject} / {@code getAsJsonArray} throw on - * {@code JsonNull}. One null field must not abort the whole payload, so - * every lookup goes through these and treats null like absent. + * GraphQL returns {@code null} for optional fields that are unset. One + * null or mistyped field must not abort the whole payload, so lookups go + * through these and treat anything unexpected like absent. */ - private static JsonObject objectOrNull(JsonObject parent, String key) { - JsonElement el = parent.get(key); - return el != null && el.isJsonObject() ? el.getAsJsonObject() : null; + private static LDValue objectOrNull(LDValue parent, String key) { + LDValue el = parent.get(key); + return el.getType() == LDValueType.OBJECT ? el : null; } - private static JsonArray arrayOrNull(JsonObject parent, String key) { - JsonElement el = parent.get(key); - return el != null && el.isJsonArray() ? el.getAsJsonArray() : null; + /** The object elements of an array; empty for null or a non-array. */ + private static List objects(LDValue array) { + if (array.getType() != LDValueType.ARRAY) { + return Collections.emptyList(); + } + List result = new ArrayList<>(); + for (LDValue el : array.values()) { + if (el.getType() == LDValueType.OBJECT) { + result.add(el); + } + } + return result; } - private static int ratioOrDefault(JsonObject obj) { - JsonElement el = obj.get("samplingRatio"); - if (el == null || !el.isJsonPrimitive() || !el.getAsJsonPrimitive().isNumber()) { - return 1; - } - return el.getAsInt(); + private static int ratioOrDefault(LDValue obj) { + LDValue el = obj.get("samplingRatio"); + return el.isNumber() ? el.intValue() : 1; } /** * Like Go, an exact value takes precedence over a regex, and an empty * regex counts as unset. A config with neither is no filter. */ - private static MatchConfig parseMatchConfig(JsonObject obj) { + private static MatchConfig parseMatchConfig(LDValue obj) { if (obj == null) return null; - JsonElement match = obj.get("matchValue"); - if (match != null && !match.isJsonNull()) { + LDValue match = obj.get("matchValue"); + if (!match.isNull()) { return MatchConfig.ofValue(matchValue(match)); } - JsonElement regex = obj.get("regexValue"); - if (regex != null && regex.isJsonPrimitive() && !regex.getAsString().isEmpty()) { - return MatchConfig.ofRegex(regex.getAsString()); + LDValue regex = obj.get("regexValue"); + if (regex.isString() && !regex.stringValue().isEmpty()) { + return MatchConfig.ofRegex(regex.stringValue()); } return null; } @@ -236,17 +210,16 @@ private static MatchConfig parseMatchConfig(JsonObject obj) { * or object is kept as is and never matches, instead of throwing and * losing the whole sampling payload. */ - private static Object matchValue(JsonElement el) { - if (!el.isJsonPrimitive()) { - return el; - } - JsonPrimitive primitive = el.getAsJsonPrimitive(); - if (primitive.isBoolean()) { - return primitive.getAsBoolean(); - } - if (primitive.isNumber()) { - return primitive.getAsDouble(); + private static Object matchValue(LDValue el) { + switch (el.getType()) { + case BOOLEAN: + return el.booleanValue(); + case NUMBER: + return el.doubleValue(); + case STRING: + return el.stringValue(); + default: + return el; } - return primitive.getAsString(); } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java index 493ffee72b..87403a2a55 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/GraphQLClientTest.java @@ -1,6 +1,6 @@ package com.launchdarkly.observability.internal; -import com.google.gson.JsonElement; +import com.launchdarkly.sdk.LDValue; import com.launchdarkly.observability.internal.sampling.SamplingConfig; import com.sun.net.httpserver.HttpExchange; import com.sun.net.httpserver.HttpServer; @@ -117,7 +117,7 @@ void proxySelectorRoutesRequestThroughProxy() throws Exception { Collections.emptyMap(), new ProxySelectorForTest(proxyAddress)); - JsonElement data = client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test")); + LDValue data = client.execute(SamplingApiService.QUERY, Map.of("organization_verbose_id", "sdk-test")); assertNotNull(data, "the proxied request should succeed"); assertEquals(1, requestLines.size()); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java index 595706a1b5..22d32f405d 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingConfigParsingTest.java @@ -1,9 +1,8 @@ package com.launchdarkly.observability.internal; -import com.google.gson.JsonObject; -import com.google.gson.JsonParser; import com.launchdarkly.observability.internal.sampling.SamplingConfig; import com.launchdarkly.observability.internal.sampling.SamplingConfig.MatchConfig; +import com.launchdarkly.sdk.LDValue; import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; @@ -55,7 +54,6 @@ void exactValueWinsOverRegexAndEmptyRegexIsNoFilter() { } private static SamplingConfig parse(String sampling) { - JsonObject json = JsonParser.parseString(sampling).getAsJsonObject(); - return SamplingApiService.parseSamplingConfig(json); + return SamplingApiService.parseSamplingConfig(LDValue.parse(sampling)); } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java index 6c18f70fd1..125af6e371 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/SamplingScenariosTest.java @@ -6,6 +6,7 @@ import com.google.gson.JsonPrimitive; import com.launchdarkly.observability.internal.sampling.CustomSampler; import com.launchdarkly.observability.internal.sampling.SamplingConfig; +import com.launchdarkly.sdk.LDValue; import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.common.AttributesBuilder; @@ -53,7 +54,7 @@ List spanScenarios() throws IOException { List tests = new ArrayList<>(); for (JsonElement el : loadScenarios("sampling/span-test-scenarios.json")) { JsonObject scenario = el.getAsJsonObject(); - SamplingConfig config = SamplingApiService.parseSamplingConfig(scenario.getAsJsonObject("samplingConfig")); + SamplingConfig config = SamplingApiService.parseSamplingConfig(LDValue.parse(scenario.get("samplingConfig").toString())); SpanData span = span(scenario.getAsJsonObject("inputSpan")); for (JsonElement c : scenario.getAsJsonArray("samplerFunctionCases")) { JsonObject samplerCase = c.getAsJsonObject(); @@ -75,7 +76,7 @@ List logScenarios() throws IOException { List tests = new ArrayList<>(); for (JsonElement el : loadScenarios("sampling/log-test-scenarios.json")) { JsonObject scenario = el.getAsJsonObject(); - SamplingConfig config = SamplingApiService.parseSamplingConfig(scenario.getAsJsonObject("samplingConfig")); + SamplingConfig config = SamplingApiService.parseSamplingConfig(LDValue.parse(scenario.get("samplingConfig").toString())); LogRecordData log = log(scenario.getAsJsonObject("inputLog")); for (JsonElement c : scenario.getAsJsonArray("samplerFunctionCases")) { JsonObject samplerCase = c.getAsJsonObject(); From ad8d6109feb8d8c25a17dc609d87871ae1c4faa4 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:56:32 +0000 Subject: [PATCH 32/47] test: log the span name, not the whole span, in the .NET traces check CodeQL flags the full item as possibly sensitive (alert 719). Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- e2e/tests/src/test_sdk.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/e2e/tests/src/test_sdk.py b/e2e/tests/src/test_sdk.py index 559c50d8a4..e532dd2bd8 100644 --- a/e2e/tests/src/test_sdk.py +++ b/e2e/tests/src/test_sdk.py @@ -333,7 +333,7 @@ def validator_traces(data: dict[str, any]): for item in filter( lambda eg: eg["node"]["spanName"] == exp, data["traces"]["edges"] ): - logging.info(f"checking item {item}") + logging.info(f"checking span {exp}") assert item["node"]["projectID"] == 1 assert item["node"]["secureSessionID"] == "a1b2c30002" assert item["node"]["traceID"] == "aadbc7a427cc836727783c887b329f44" From 274fc0a2b3150522144251b34b4aabf8ed01b1c3 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:31:16 +0000 Subject: [PATCH 33/47] fix: keep the application running when the plugin cannot start LDClient catches Exception from Plugin.register but not Error. Spring Boot 3.2 pins OpenTelemetry 1.31, so the plugin's exporter setup threw NoSuchMethodError and the whole Spring context failed to start. A bad option such as an otlpEndpoint without a scheme was swallowed by LDClient with only "Exception thrown registering plugin" and no cause. OtelManager.initialize now catches RuntimeException and LinkageError, logs one SEVERE line with the cause, the OpenTelemetry SDK version on the classpath and the minimum the plugin needs (1.38.0), and leaves the plugin a no-op. The plugin skips the sampling fetch in that case. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability/ObservabilityPlugin.java | 5 +- .../observability/internal/Constants.java | 7 ++ .../observability/internal/OtelManager.java | 41 +++++++- .../internal/PluginStartupTest.java | 94 +++++++++++++++++++ 4 files changed, 142 insertions(+), 5 deletions(-) create mode 100644 sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java index a8e9efe782..d9065f218a 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -90,8 +90,9 @@ public void register(LDClient client, EnvironmentMetadata metadata) { return; } - if (!options.isManualStart()) { - OtelManager.initialize(sdkKey, options); + if (!options.isManualStart() && !OtelManager.initialize(sdkKey, options)) { + // Already logged; nothing would use a sampling config. + return; } // Fetch sampling config in background diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java index b2f31f5806..151bb33fcd 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/Constants.java @@ -20,6 +20,13 @@ private Constants() {} public static final String INSTRUMENTATION_VERSION = "0.1.0"; // x-release-please-end + /** + * The oldest OpenTelemetry Java SDK the plugin runs on. 1.38 made the + * synchronous gauge stable and has every exporter builder method the + * plugin calls. Spring Boot 3.3 and later manage 1.38 or newer. + */ + public static final String MIN_OTEL_SDK_VERSION = "1.38.0"; + public static final String PROJECT_ID_ATTRIBUTE = "highlight.project_id"; public static final String ERROR_SPAN_NAME = "highlight.error"; public static final String ATTR_SAMPLING_RATIO = "launchdarkly.sampling.ratio"; diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 84a05d2ef3..7325b2f23b 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -7,6 +7,7 @@ import com.launchdarkly.observability.internal.sampling.SamplingTraceExporter; import io.opentelemetry.api.GlobalOpenTelemetry; import io.opentelemetry.api.OpenTelemetry; +import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Logger; import io.opentelemetry.api.metrics.DoubleGauge; @@ -40,6 +41,7 @@ import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; +import java.util.logging.Level; /** * Manages OpenTelemetry provider setup and lifecycle for LaunchDarkly Observability. @@ -110,14 +112,36 @@ private OtelManager( *

Safe for concurrent callers. Only the first call builds providers and * registers a shutdown hook. Sampling configuration fetched before this * returns is applied to the new sampler.

+ * + *

Never throws. A bad option (an endpoint that is not a URL) or an + * OpenTelemetry SDK on the classpath too old for the plugin is logged, + * and the plugin stays a no-op, so observability cannot stop the + * application or the LaunchDarkly client from starting.

+ * + * @return whether providers are running when this returns */ - public static void initialize(String sdkKey, ObservabilityOptions options) { + public static boolean initialize(String sdkKey, ObservabilityOptions options) { synchronized (INIT_LOCK) { if (INSTANCE.get() != null) { log.fine("OtelManager already initialized, skipping"); - return; + return true; + } + OtelManager manager; + try { + manager = create(sdkKey, options); + } catch (RuntimeException | LinkageError e) { + // LinkageError: Spring Boot and other BOMs pin their own + // OpenTelemetry version, which can be older than this plugin + // needs. LDClient only catches Exception from a plugin, so + // a NoSuchMethodError here would abort application startup. + String hint = e instanceof LinkageError + ? " OpenTelemetry SDK on the classpath: " + sdkVersion() + "; this plugin needs " + + Constants.MIN_OTEL_SDK_VERSION + " or newer." + : ""; + log.log(Level.SEVERE, "LaunchDarkly observability could not start and exports nothing;" + + " flag evaluations are unaffected." + hint + " Cause: " + e, e); + return false; } - OtelManager manager = create(sdkKey, options); INSTANCE.set(manager); SamplingConfig pending = PENDING_SAMPLING_CONFIG.get(); if (pending != null) { @@ -132,6 +156,7 @@ public static void initialize(String sdkKey, ObservabilityOptions options) { }, "ld-observability-shutdown"); Runtime.getRuntime().addShutdownHook(shutdownHook); } + return true; } } @@ -152,6 +177,16 @@ public static boolean registerClient(String sdkKey) { } } + /** The OpenTelemetry SDK version on the classpath, as the SDK reports it. */ + static String sdkVersion() { + try { + String version = Resource.getDefault().getAttribute(AttributeKey.stringKey("telemetry.sdk.version")); + return version == null ? "unknown" : version; + } catch (RuntimeException | LinkageError e) { + return "unknown"; + } + } + private static OtelManager create(String sdkKey, ObservabilityOptions options) { Resource resource = buildResource(sdkKey, options); String endpoint = options.getOtlpEndpoint(); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java new file mode 100644 index 0000000000..9c83f1fa8b --- /dev/null +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java @@ -0,0 +1,94 @@ +package com.launchdarkly.observability.internal; + +import com.launchdarkly.observability.LDObserve; +import com.launchdarkly.observability.ObservabilityOptions; +import com.launchdarkly.observability.ObservabilityPlugin; +import com.launchdarkly.sdk.LDContext; +import com.launchdarkly.sdk.server.Components; +import com.launchdarkly.sdk.server.LDClient; +import com.launchdarkly.sdk.server.LDConfig; +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.common.Attributes; +import io.opentelemetry.api.logs.Severity; +import org.junit.jupiter.api.AfterEach; +import org.junit.jupiter.api.BeforeEach; +import org.junit.jupiter.api.Test; + +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.logging.Handler; +import java.util.logging.Level; +import java.util.logging.LogRecord; +import java.util.logging.Logger; + +import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; +import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertTrue; + +/** + * How the plugin starts, fails to start and coexists with other clients in + * one process. + */ +class PluginStartupTest { + + private final List records = new CopyOnWriteArrayList<>(); + private final Handler handler = new Handler() { + @Override public void publish(LogRecord record) { records.add(record); } + @Override public void flush() {} + @Override public void close() {} + }; + private final Logger pluginLogger = Logger.getLogger("com.launchdarkly.observability"); + + @BeforeEach + void captureLogs() { + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + pluginLogger.addHandler(handler); + } + + @AfterEach + void reset() { + pluginLogger.removeHandler(handler); + OtelManager.resetForTest(); + GlobalOpenTelemetry.resetForTest(); + } + + @Test + void badOptionIsLoggedAndDoesNotStopTheClient() { + ObservabilityOptions options = new ObservabilityOptions.Builder() + .otlpEndpoint("otel.example.test:4318") + .build(); + + LDClient client = assertDoesNotThrow(() -> client("sdk-bad-endpoint", options)); + try { + assertFalse(OtelManager.isInitialized()); + assertFalse(client.boolVariation("flag", LDContext.create("user"), false)); + assertDoesNotThrow(() -> LDObserve.recordLog("ignored", Severity.INFO, Attributes.empty())); + } finally { + assertDoesNotThrow(client::close); + } + + LogRecord severe = records.stream() + .filter(r -> r.getLevel() == Level.SEVERE) + .findFirst() + .orElseThrow(() -> new AssertionError("expected a SEVERE log explaining why the plugin is off")); + assertTrue(severe.getMessage().contains("could not start"), severe.getMessage()); + assertTrue(severe.getMessage().contains("otel.example.test:4318"), + "the log must carry the cause so the user can fix it: " + severe.getMessage()); + assertFalse(severe.getMessage().contains("needs 1.38"), + "a configuration error is not a version problem: " + severe.getMessage()); + } + + @Test + void sdkVersionReportsTheClasspathVersion() { + assertTrue(OtelManager.sdkVersion().matches("\\d+\\.\\d+\\.\\d+.*"), OtelManager.sdkVersion()); + } + + private static LDClient client(String sdkKey, ObservabilityOptions options) { + LDConfig config = new LDConfig.Builder() + .offline(true) + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + return new LDClient(sdkKey, config); + } +} From 04bd6bbf414dc9f1e7a6015134fec1bce0346774 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:57:46 +0000 Subject: [PATCH 34/47] fix: let frameworks own shutdown so drained requests keep their telemetry The plugin's JVM shutdown hook stopped the providers as soon as SIGTERM arrived. The JVM runs hooks concurrently, so under Spring Boot it ran while Spring was still draining in-flight requests (server.shutdown= graceful), and every span, log and metric those requests recorded was dropped. Reproduced with a 3 s request and docker stop: nothing reached the collector. The Spring Boot example's LDObserve.shutdown() bean ran too late to help. ObservabilityOptions.Builder#shutdownHook(false) keeps the plugin from registering its single process-wide hook, so the application calls LDObserve.shutdown() from its own close callback. The default stays true for plain main() applications. The Spring Boot example opts out, since it already stops the plugin from a bean. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../springboot/LaunchDarklyConfiguration.java | 7 +++++- .../observability-java/README.md | 3 ++- .../launchdarkly/observability/LDObserve.java | 7 +++++- .../observability/ObservabilityOptions.java | 22 +++++++++++++++++++ .../observability/internal/OtelManager.java | 4 +++- .../ObservabilityPluginTest.java | 1 + .../internal/OtelManagerTest.java | 19 ++++++++++++++++ 7 files changed, 59 insertions(+), 4 deletions(-) diff --git a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java index 47b2b58d1a..b6d1db699d 100644 --- a/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java +++ b/e2e/java-plugin-spring-boot/src/main/java/com/launchdarkly/observability/example/springboot/LaunchDarklyConfiguration.java @@ -42,7 +42,12 @@ public LDClient ldClient( .resourceAttributes(Attributes.of( AttributeKey.stringKey("example.framework"), "spring-boot", AttributeKey.stringKey("example.runtime"), System.getProperty("java.version"))) - .logsApiLevel(ObservabilityOptions.LogLevel.INFO); + .logsApiLevel(ObservabilityOptions.LogLevel.INFO) + // Spring closes the context in its own shutdown hook, after + // draining in-flight requests. The plugin's JVM hook would + // run alongside it and stop the providers mid-drain, so + // observabilityShutdown() below stops them instead. + .shutdownHook(false); if (!otlpEndpoint.isEmpty()) { options.otlpEndpoint(otlpEndpoint); } diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 056aaab1ec..80398b13d6 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -78,7 +78,7 @@ The plugin registers its SDK as `GlobalOpenTelemetry` when it can. When the glob The OpenTelemetry providers are process-wide. The first `LDClient` that registers the plugin starts them and its SDK key identifies the project for everything exported. Another `LDClient` with the same SDK key shares them. An `LDClient` with a different SDK key logs a warning and its plugin starts nothing: its flag evaluations are still recorded, under the first client's SDK key. -Closing an `LDClient` does not stop the providers. Call `LDObserve.shutdown()` when your application stops (for example after closing the client) to flush and stop them; the plugin also registers one JVM shutdown hook that does the same. +Closing an `LDClient` does not stop the providers. Call `LDObserve.shutdown()` when your application stops (for example after closing the client) to flush and stop them; the plugin also registers one JVM shutdown hook that does the same, unless you turn it off with `shutdownHook(false)` (see [Spring Boot](#spring-boot)). ## Manual Instrumentation @@ -132,6 +132,7 @@ Every `LDObserve` method is safe to call before the plugin is initialized; such | `logsApiLevel` | `INFO` | Minimum severity for exported logs. `NONE` disables log export. | | `debug` | `false` | Enable debug logging | | `manualStart` | `false` | Delay OTLP provider startup until `LDObserve.start(sdkKey, options)` | +| `shutdownHook` | `true` | Flush and stop the providers from a JVM shutdown hook. Set `false` under Spring Boot or another framework that owns shutdown, and call `LDObserve.shutdown()` from its close callback, so telemetry from requests drained during graceful shutdown is not dropped | ### Proxies and custom headers diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index cc92615b72..c2ab24c0a3 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -126,7 +126,12 @@ public static void flush() { } /** - * Flushes all pending data and shuts down the providers. + * Flushes all pending data and shuts down the providers. Call it after + * the last telemetry is recorded: under Spring Boot, from a bean's + * destroy method (see + * {@link ObservabilityOptions.Builder#shutdownHook(boolean)}). Later + * calls, and the plugin's JVM shutdown hook if it is registered, then + * find nothing to do. */ public static void shutdown() { OtelManager.shutdown(); diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java index 565dbcf564..1ab432c9db 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityOptions.java @@ -33,6 +33,7 @@ public final class ObservabilityOptions { private final LogLevel logsApiLevel; private final boolean debug; private final boolean manualStart; + private final boolean shutdownHook; private ObservabilityOptions(Builder builder) { this.enabled = builder.enabled; @@ -47,6 +48,7 @@ private ObservabilityOptions(Builder builder) { this.logsApiLevel = builder.logsApiLevel; this.debug = builder.debug; this.manualStart = builder.manualStart; + this.shutdownHook = builder.shutdownHook; } /** Whether the plugin exports telemetry at all. See {@link Builder#enabled(boolean)}. */ @@ -66,6 +68,8 @@ private ObservabilityOptions(Builder builder) { public LogLevel getLogsApiLevel() { return logsApiLevel; } public boolean isDebug() { return debug; } public boolean isManualStart() { return manualStart; } + /** Whether the plugin flushes and stops on JVM exit by itself. See {@link Builder#shutdownHook(boolean)}. */ + public boolean isShutdownHook() { return shutdownHook; } /** * Minimum severity for exported log records. Mirrors the OpenTelemetry @@ -116,6 +120,7 @@ public static class Builder { private LogLevel logsApiLevel = LogLevel.INFO; private boolean debug = false; private boolean manualStart = false; + private boolean shutdownHook = true; public Builder() {} @@ -246,6 +251,23 @@ public Builder manualStart(boolean manualStart) { return this; } + /** + * Whether the plugin registers a JVM shutdown hook that flushes and + * stops its providers. Defaults to {@code true}, which suits a plain + * {@code main} application. + * + *

Set it to {@code false} when a framework owns shutdown, such as + * Spring Boot, and call {@link LDObserve#shutdown()} from the + * framework's close callback instead. The JVM runs shutdown hooks + * concurrently, so the plugin's hook would otherwise stop the + * providers while Spring is still draining in-flight requests, and + * everything those requests record would be dropped.

+ */ + public Builder shutdownHook(boolean shutdownHook) { + this.shutdownHook = shutdownHook; + return this; + } + public ObservabilityOptions build() { return new ObservabilityOptions(this); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 7325b2f23b..d5da3013a9 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -147,7 +147,9 @@ public static boolean initialize(String sdkKey, ObservabilityOptions options) { if (pending != null) { manager.customSampler.setConfig(pending); } - if (shutdownHook == null) { + // One hook for the process, and none when the application owns + // shutdown (see ObservabilityOptions.Builder#shutdownHook). + if (options.isShutdownHook() && shutdownHook == null) { shutdownHook = new Thread(() -> { OtelManager current = INSTANCE.getAndSet(null); if (current != null) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java index 91e832d076..7199109802 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/ObservabilityPluginTest.java @@ -46,6 +46,7 @@ void optionsBuilderDefaults() { assertEquals("", options.getEnvironment()); assertFalse(options.isDebug()); assertFalse(options.isManualStart()); + assertTrue(options.isShutdownHook()); assertEquals("https://otel.observability.app.launchdarkly.com:4318", options.getOtlpEndpoint()); assertEquals("https://pub.observability.app.launchdarkly.com", options.getBackendUrl()); assertTrue(options.isEnabled()); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java index 6425b4b1e0..c7768dfc34 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java @@ -18,6 +18,7 @@ import static org.junit.jupiter.api.Assertions.assertFalse; import static org.junit.jupiter.api.Assertions.assertNotNull; import static org.junit.jupiter.api.Assertions.assertNotSame; +import static org.junit.jupiter.api.Assertions.assertNull; import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertTrue; @@ -117,6 +118,24 @@ private static void assertEqualsZero(int failures) { assertTrue(failures == 0, "concurrent initialize failures: " + failures); } + @Test + void shutdownHookIsRegisteredByDefault() { + OtelManager.initialize("sdk-test", options()); + assertNotNull(OtelManager.shutdownHookForTest()); + } + + @Test + void shutdownHookCanBeLeftToTheFramework() { + OtelManager.initialize("sdk-test", new ObservabilityOptions.Builder() + .otlpEndpoint("https://otel.example.test:4318") + .shutdownHook(false) + .build()); + + assertTrue(OtelManager.isInitialized()); + assertNull(OtelManager.shutdownHookForTest(), + "with shutdownHook(false) the application stops the plugin; a JVM hook would race it"); + } + private static ObservabilityOptions options() { return new ObservabilityOptions.Builder() .serviceName("test-service") From 27436314423b775fda30b3844d0cc785a72a1c17 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:34:38 +0000 Subject: [PATCH 35/47] feat: expose the plugin's OpenTelemetry through LDObserve.getOpenTelemetry A Spring Boot app gets no request spans from the plugin: each flag evaluation becomes its own root trace, the feature_flag event has no span to land on, and SLF4J/Logback logs are not exported. With Spring's Micrometer tracing bridge the evaluation spans point at request spans that Boot's own SDK never exports. Wiring Boot or the OpenTelemetry Logback appender to the plugin needed GlobalOpenTelemetry.get(), which returns someone else's SDK whenever the global is taken (Java agent, manual start) and locks in a no-op when called too early. LDObserve.getOpenTelemetry() returns a view of the plugin's providers. It resolves them on each call, so it is safe to take before start and goes no-op after shutdown, and it has no close() so Spring's inferred destroy method cannot stop the providers. Verified end to end on Spring Boot 3.5: as the OpenTelemetry bean it sends Boot's HTTP server spans with feature_flag events, child evaluation spans and exception events to the plugin's exporter; with OpenTelemetryAppender.install it exports Logback records with trace ids. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../launchdarkly/observability/LDObserve.java | 24 ++++++++++ .../observability/internal/OtelManager.java | 45 +++++++++++++++++++ .../internal/PluginStartupTest.java | 28 ++++++++++++ 3 files changed, 97 insertions(+) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index c2ab24c0a3..1896583ae6 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -2,6 +2,7 @@ import com.launchdarkly.observability.internal.Constants; import com.launchdarkly.observability.internal.OtelManager; +import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.LogRecordBuilder; import io.opentelemetry.api.logs.Severity; @@ -110,6 +111,29 @@ public static Span startSpan(String name, Attributes attributes) { .startSpan(); } + /** + * Returns the plugin's OpenTelemetry, so other instrumentation can export + * to LaunchDarkly through the same providers, resource and sampling + * rules. It works whether or not the plugin also owns + * {@code GlobalOpenTelemetry}. + * + *

Typical uses: expose it as the {@code OpenTelemetry} bean so Spring + * Boot's Micrometer tracing bridge sends HTTP server spans (with the + * flag-evaluation spans as children) to LaunchDarkly, or pass it to + * {@code OpenTelemetryAppender.install} so Logback or Log4j records are + * exported.

+ * + *

The returned instance looks the providers up on every call: before + * the plugin starts, or after {@link #shutdown()}, it hands out no-op + * tracers, meters and loggers. Instruments and tracers obtained in that + * window stay no-ops, so take them after the {@code LDClient} is built + * (or after {@link #start} with manual start). It cannot be closed; + * use {@link #shutdown()}.

+ */ + public static OpenTelemetry getOpenTelemetry() { + return OtelManager.getOpenTelemetry(); + } + /** * Manually starts the OTLP providers. Only needed when * {@link ObservabilityOptions.Builder#manualStart(boolean)} is true. diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index d5da3013a9..fd413bcc60 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -10,12 +10,15 @@ import io.opentelemetry.api.common.AttributeKey; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Logger; +import io.opentelemetry.api.logs.LoggerProvider; import io.opentelemetry.api.metrics.DoubleGauge; import io.opentelemetry.api.metrics.DoubleHistogram; import io.opentelemetry.api.metrics.LongCounter; import io.opentelemetry.api.metrics.LongUpDownCounter; import io.opentelemetry.api.metrics.Meter; +import io.opentelemetry.api.metrics.MeterProvider; import io.opentelemetry.api.trace.Tracer; +import io.opentelemetry.api.trace.TracerProvider; import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator; import io.opentelemetry.context.propagation.ContextPropagators; import io.opentelemetry.context.propagation.TextMapPropagator; @@ -315,6 +318,48 @@ public static void setSamplingConfig(SamplingConfig config) { } } + /** + * A view of the plugin's OpenTelemetry that resolves the providers on + * every call, so it works even when taken before the providers start. + * It has no {@code close()}: frameworks that close beans (Spring infers + * a destroy method from the instance) must not stop the plugin's + * providers behind its back. + */ + private static final OpenTelemetry VIEW = new OpenTelemetry() { + @Override + public TracerProvider getTracerProvider() { + OtelManager manager = INSTANCE.get(); + return manager != null ? manager.openTelemetrySdk.getTracerProvider() : TracerProvider.noop(); + } + + @Override + public MeterProvider getMeterProvider() { + OtelManager manager = INSTANCE.get(); + return manager != null ? manager.openTelemetrySdk.getMeterProvider() : MeterProvider.noop(); + } + + @Override + public LoggerProvider getLogsBridge() { + OtelManager manager = INSTANCE.get(); + return manager != null ? manager.openTelemetrySdk.getLogsBridge() : LoggerProvider.noop(); + } + + @Override + public ContextPropagators getPropagators() { + OtelManager manager = INSTANCE.get(); + return manager != null ? manager.openTelemetrySdk.getPropagators() : ContextPropagators.noop(); + } + + @Override + public String toString() { + return "LaunchDarklyObservabilityOpenTelemetry{started=" + (INSTANCE.get() != null) + "}"; + } + }; + + public static OpenTelemetry getOpenTelemetry() { + return VIEW; + } + public static Tracer getTracer() { OtelManager manager = INSTANCE.get(); if (manager != null) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java index 9c83f1fa8b..90df0d9288 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java @@ -8,8 +8,10 @@ import com.launchdarkly.sdk.server.LDClient; import com.launchdarkly.sdk.server.LDConfig; import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.OpenTelemetry; import io.opentelemetry.api.common.Attributes; import io.opentelemetry.api.logs.Severity; +import io.opentelemetry.api.trace.Span; import org.junit.jupiter.api.AfterEach; import org.junit.jupiter.api.BeforeEach; import org.junit.jupiter.api.Test; @@ -23,6 +25,7 @@ import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertTrue; /** @@ -79,6 +82,31 @@ void badOptionIsLoggedAndDoesNotStopTheClient() { "a configuration error is not a version problem: " + severe.getMessage()); } + @Test + void openTelemetryViewFollowsThePluginLifecycle() throws Exception { + OpenTelemetry otel = LDObserve.getOpenTelemetry(); + assertFalse(otel.getTracer("before").spanBuilder("s").startSpan().isRecording(), + "before the plugin starts the view hands out no-ops"); + + // Someone else owns the global, as with the Java agent. + GlobalOpenTelemetry.set(OpenTelemetry.noop()); + LDClient client = client("sdk-view", new ObservabilityOptions.Builder() + .otlpEndpoint("http://127.0.0.1:9") + .build()); + try { + assertSame(otel, LDObserve.getOpenTelemetry()); + Span span = otel.getTracer("app").spanBuilder("request").startSpan(); + assertTrue(span.isRecording(), "the view must reach the plugin's providers, not the global"); + span.end(); + assertFalse(otel instanceof AutoCloseable, + "frameworks infer close() as a destroy method; the view must not expose one"); + } finally { + client.close(); + LDObserve.shutdown(); + } + assertFalse(otel.getTracer("after").spanBuilder("s").startSpan().isRecording()); + } + @Test void sdkVersionReportsTheClasspathVersion() { assertTrue(OtelManager.sdkVersion().matches("\\d+\\.\\d+\\.\\d+.*"), OtelManager.sdkVersion()); From 26981375674717df3ccb693b6d78c1b7c21cd978 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:37:01 +0000 Subject: [PATCH 36/47] fix: keep the OTLP exporters' own counters out of customer metrics Since OpenTelemetry 1.49 each OTLP exporter counts its exports into GlobalOpenTelemetry's meter provider. Once the plugin registered as the global, otlp.exporter.seen and otlp.exporter.exported were exported to LaunchDarkly next to the application's metrics on every app we ran (Spring Boot 3.5 and 4.1). The exporters now get a no-op meter provider. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability/internal/OtelManager.java | 14 ++++++++++++++ .../observability/internal/PluginUserFlowTest.java | 6 ++++++ 2 files changed, 20 insertions(+) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index fd413bcc60..6fc7f9caaa 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -202,8 +202,14 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { CustomSampler customSampler = new CustomSampler(); + // Each exporter below reports its own otlp.exporter.* counters to + // GlobalOpenTelemetry's meter provider, which is the plugin's once it + // registers, so they would land in the customer's LaunchDarkly + // metrics next to their own. They are switched off. + // Trace exporter with sampling OtlpHttpSpanExporterBuilder spanExporterBuilder = OtlpHttpSpanExporter.builder() + .setMeterProvider(MeterProvider.noop()) .setEndpoint(endpoint + Constants.TRACES_PATH) .setCompression("gzip") .setHeaders(() -> headers); @@ -230,6 +236,7 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { // Log exporter with level filter and sampling OtlpHttpLogRecordExporterBuilder logExporterBuilder = OtlpHttpLogRecordExporter.builder() + .setMeterProvider(MeterProvider.noop()) .setEndpoint(endpoint + Constants.LOGS_PATH) .setCompression("gzip") .setHeaders(() -> headers); @@ -255,6 +262,13 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { .setEndpoint(endpoint + Constants.METRICS_PATH) .setCompression("gzip") .setHeaders(() -> headers); + try { + metricExporterBuilder.setMeterProvider(MeterProvider.noop()); + } catch (NoSuchMethodError e) { + // Added in 1.50 together with the metric exporter's own + // counters; older metric exporters count nothing. Spring Boot + // 3.5 pins 1.49. + } if (proxy != null) { metricExporterBuilder.setProxyOptions(proxy); } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index 0a9445445d..52c8dc0c90 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -100,6 +100,12 @@ void pluginExportsFlagEvaluationAndHonorsSamplingRules() throws Exception { LDObserve.startSpan("user-checkout", Attributes.empty()).end(); LDObserve.flush(); assertTrue(payloadContains(traces, "user-checkout"), "unmatched spans should still export"); + + // The exports above made the OTLP exporters count their own + // work; those counters must not reach the customer's metrics. + LDObserve.flush(); + assertFalse(payloadContains(metrics, "otlp.exporter"), + "exporter self-metrics were exported: " + summarize(metrics)); } } From 0b0fc990cde19b28ad2aa4b337a4bf4e2e51ab39 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:38:06 +0000 Subject: [PATCH 37/47] fix: log an unreachable sampling backend in one line A server that cannot reach the LaunchDarkly backend (offline, egress blocked, wrong backendUrl) logged a WARNING with a full stack trace on every start. It is now one line saying telemetry is exported unsampled, with the stack trace at FINE. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../internal/SamplingApiService.java | 5 ++++- .../internal/PluginStartupTest.java | 20 +++++++++++++++++++ 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java index a77c075e0b..3aaf76b28c 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/SamplingApiService.java @@ -106,7 +106,10 @@ public SamplingConfig getSamplingConfig(String sdkKey) { } return parseSamplingConfig(sampling); } catch (Exception e) { - log.log(Level.WARNING, "Failed to fetch sampling config", e); + // A server that cannot reach the backend logs this on every + // start, so one line; the stack trace is there at FINE. + log.warning("Could not fetch the LaunchDarkly sampling config; exporting everything unsampled: " + e); + log.log(Level.FINE, "Sampling config fetch failure", e); return null; } } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java index 90df0d9288..a608776845 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java @@ -25,6 +25,7 @@ import static org.junit.jupiter.api.Assertions.assertDoesNotThrow; import static org.junit.jupiter.api.Assertions.assertFalse; +import static org.junit.jupiter.api.Assertions.assertNull; import static org.junit.jupiter.api.Assertions.assertSame; import static org.junit.jupiter.api.Assertions.assertTrue; @@ -107,6 +108,25 @@ void openTelemetryViewFollowsThePluginLifecycle() throws Exception { assertFalse(otel.getTracer("after").spanBuilder("s").startSpan().isRecording()); } + @Test + void unreachableSamplingBackendLogsOneLine() { + SamplingApiService service = new SamplingApiService(new GraphQLClient("http://127.0.0.1:9")); + + assertNull(service.getSamplingConfig("sdk-offline")); + + // Sampling threads from earlier tests may log here too; every + // warning from the service must have the same one-line shape. + List warnings = records.stream() + .filter(r -> r.getLevel() == Level.WARNING) + .filter(r -> SamplingApiService.class.getName().equals(r.getLoggerName())) + .collect(java.util.stream.Collectors.toList()); + assertFalse(warnings.isEmpty(), "a failed fetch must be reported"); + for (LogRecord warning : warnings) { + assertNull(warning.getThrown(), "the stack trace belongs at FINE, not in every server's startup log"); + assertTrue(warning.getMessage().contains("unsampled"), warning.getMessage()); + } + } + @Test void sdkVersionReportsTheClasspathVersion() { assertTrue(OtelManager.sdkVersion().matches("\\d+\\.\\d+\\.\\d+.*"), OtelManager.sdkVersion()); From 253ce922dabb9179be15a3fa50a9612551f902ee Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:39:35 +0000 Subject: [PATCH 38/47] fix: make LDObserve.recordMetric a no-op on OpenTelemetry before 1.38 With the startup fix a Spring Boot 3.2 app (OpenTelemetry 1.31) starts and the plugin stays off, but the first LDObserve.recordMetric still threw NoSuchMethodError from the no-op meter, because the synchronous gauge API only exists since 1.38, and failed the request with a 500. The call now swallows LinkageError; the plugin has already logged why it is off. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../java/com/launchdarkly/observability/LDObserve.java | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index 1896583ae6..46e5426980 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -29,7 +29,13 @@ private LDObserve() {} * Records a gauge metric. */ public static void recordMetric(String name, double value, Attributes attributes) { - OtelManager.getGauge(name).set(value, orEmpty(attributes)); + try { + OtelManager.getGauge(name).set(value, orEmpty(attributes)); + } catch (LinkageError e) { + // The synchronous gauge API arrived in OpenTelemetry 1.38. On an + // older API (Spring Boot 3.2 pins 1.31) the plugin is already off + // and has logged why; recording must not fail the caller. + } } /** From 0a58be1288137f623edd2cc2afbceb90f1e87c14 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:47:29 +0000 Subject: [PATCH 39/47] fix: bound shutdown to 5 s when the endpoint is unreachable Shutdown flushed each provider and then shut each down, waiting up to 10 s on every step in turn. With the OTLP endpoint unreachable a Spring Boot app took 26 s to stop against a blackholed address and 9 s against a refused port, close to a Kubernetes pod's default 30 s grace period, which also has to cover Spring's request drain. Shutdown now relies on provider shutdown exporting what it holds and runs the three in parallel under one 5 s deadline; flush does the same under 10 s. Each runs on its own daemon thread because the metric reader's shutdown blocks before it returns its result code, so joining the codes alone still took 10 s. Measured after: 5.5 s for both cases. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability/internal/OtelManager.java | 52 ++++++++++++++++--- .../internal/OtelManagerTest.java | 37 +++++++++++++ 2 files changed, 82 insertions(+), 7 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 6fc7f9caaa..2e8f3b55d1 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -29,6 +29,7 @@ import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter; import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporterBuilder; import io.opentelemetry.sdk.OpenTelemetrySdk; +import io.opentelemetry.sdk.common.CompletableResultCode; import io.opentelemetry.sdk.common.export.ProxyOptions; import io.opentelemetry.sdk.logs.SdkLoggerProvider; import io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor; @@ -42,8 +43,10 @@ import java.time.Duration; import java.util.Map; import java.util.concurrent.ConcurrentHashMap; +import java.util.concurrent.CountDownLatch; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; +import java.util.function.Supplier; import java.util.logging.Level; /** @@ -515,17 +518,52 @@ static void resetForTest() { } } + // The three providers flush in parallel under one deadline. Waiting on + // each in turn, with a flush before the shutdown, took up to a minute + // when the endpoint was unreachable (26 s measured against a blackholed + // address), past a Kubernetes pod's default 30 s grace period. + static final long FLUSH_TIMEOUT_SECONDS = 10; + static final long SHUTDOWN_TIMEOUT_SECONDS = 5; + private void flushProviders() { - tracerProvider.forceFlush().join(10, TimeUnit.SECONDS); - loggerProvider.forceFlush().join(10, TimeUnit.SECONDS); - meterProvider.forceFlush().join(10, TimeUnit.SECONDS); + awaitAll(FLUSH_TIMEOUT_SECONDS, "flush", + tracerProvider::forceFlush, loggerProvider::forceFlush, meterProvider::forceFlush); } + /** Shutting a provider down exports what it still holds, so no separate flush. */ private void shutdownProviders() { - flushProviders(); - tracerProvider.shutdown().join(10, TimeUnit.SECONDS); - loggerProvider.shutdown().join(10, TimeUnit.SECONDS); - meterProvider.shutdown().join(10, TimeUnit.SECONDS); + awaitAll(SHUTDOWN_TIMEOUT_SECONDS, "shutdown", + tracerProvider::shutdown, loggerProvider::shutdown, meterProvider::shutdown); + } + + /** + * Runs each operation on its own daemon thread and waits for all of them + * up to one deadline. Some of them block before returning their result + * (the metric reader's shutdown waits for an in-flight export), so + * joining the returned codes alone does not bound the wait. + */ + @SafeVarargs + private static void awaitAll(long timeoutSeconds, String what, Supplier... operations) { + CountDownLatch done = new CountDownLatch(operations.length); + for (Supplier operation : operations) { + Thread thread = new Thread(() -> { + try { + operation.get().join(timeoutSeconds, TimeUnit.SECONDS); + } finally { + done.countDown(); + } + }, "ld-observability-" + what); + thread.setDaemon(true); + thread.start(); + } + try { + if (!done.await(timeoutSeconds, TimeUnit.SECONDS)) { + log.warning("LaunchDarkly observability " + what + " did not finish within " + timeoutSeconds + + " s; telemetry still queued for an unreachable endpoint is dropped"); + } + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + } } private static Resource buildResource(String sdkKey, ObservabilityOptions options) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java index c7768dfc34..18268b5053 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/OtelManagerTest.java @@ -136,6 +136,43 @@ void shutdownHookCanBeLeftToTheFramework() { "with shutdownHook(false) the application stops the plugin; a JVM hook would race it"); } + @Test + void shutdownAgainstAHungEndpointIsBounded() throws Exception { + // Accepts connections and never answers, like a blackholed collector. + try (java.net.ServerSocket hung = new java.net.ServerSocket(0, 50, java.net.InetAddress.getLoopbackAddress())) { + List held = new java.util.concurrent.CopyOnWriteArrayList<>(); + Thread acceptor = new Thread(() -> { + try { + while (true) { + held.add(hung.accept()); + } + } catch (java.io.IOException closed) { + // Test over. + } + }); + acceptor.setDaemon(true); + acceptor.start(); + + OtelManager.initialize("sdk-test", new ObservabilityOptions.Builder() + .otlpEndpoint("http://127.0.0.1:" + hung.getLocalPort()) + .shutdownHook(false) + .build()); + OtelManager.getTracer().spanBuilder("pending").startSpan().end(); + OtelManager.getLogger().logRecordBuilder().setBody("pending").emit(); + OtelManager.getCounter("pending").add(1); + + long started = System.nanoTime(); + OtelManager.shutdown(); + long seconds = TimeUnit.NANOSECONDS.toSeconds(System.nanoTime() - started); + + assertTrue(seconds <= OtelManager.SHUTDOWN_TIMEOUT_SECONDS + 2, + "shutdown took " + seconds + " s against a hung endpoint"); + for (java.net.Socket socket : held) { + socket.close(); + } + } + } + private static ObservabilityOptions options() { return new ObservabilityOptions.Builder() .serviceName("test-service") From 2cac52182dd8fe156fa83c34d0b76adcb2161441 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:48:09 +0000 Subject: [PATCH 40/47] feat: log where telemetry goes at startup and warn without a service name A working plugin logged nothing, so a new user could not tell from the startup log whether it had started, which endpoint it exported to, or that a missing serviceName had grouped everything under unknown_service:java. The plugin now logs one INFO line with the endpoint and resolved service.name, and a WARNING when no service name is set (directly or through resourceAttributes). Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability/internal/OtelManager.java | 10 +++++++-- .../internal/PluginStartupTest.java | 21 +++++++++++++++++++ 2 files changed, 29 insertions(+), 2 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 2e8f3b55d1..a930e95304 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -314,8 +314,14 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { OtelManager manager = new OtelManager( tracerProvider, loggerProvider, meterProvider, sdk, customSampler); - if (options.isDebug()) { - log.info("OtelManager initialized with endpoint: " + endpoint); + // One line at startup, like the LaunchDarkly SDK's own, so a user + // can see where telemetry goes and under which service name. + String serviceName = resource.getAttribute(AttributeKey.stringKey("service.name")); + log.info("LaunchDarkly observability started: exporting to " + endpoint + + " as service '" + serviceName + "'"); + if (serviceName == null || serviceName.startsWith("unknown_service")) { + log.warning("LaunchDarkly observability has no service name, so telemetry is grouped under '" + + serviceName + "'. Set ObservabilityOptions.Builder.serviceName(...)."); } return manager; } diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java index a608776845..42b3eea7b0 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginStartupTest.java @@ -127,6 +127,27 @@ void unreachableSamplingBackendLogsOneLine() { } } + @Test + void startupSaysWhereTelemetryGoesAndWarnsWithoutAServiceName() throws Exception { + try (LDClient client = client("sdk-unnamed", new ObservabilityOptions.Builder() + .otlpEndpoint("http://127.0.0.1:9").backendUrl("http://127.0.0.1:9").build())) { + assertTrue(records.stream().anyMatch(r -> r.getLevel() == Level.INFO + && r.getMessage().contains("exporting to http://127.0.0.1:9 as service 'unknown_service:java'"))); + assertTrue(records.stream().anyMatch(r -> r.getLevel() == Level.WARNING + && r.getMessage().contains("serviceName"))); + } + } + + @Test + void namedServiceStartsWithoutAWarning() throws Exception { + try (LDClient client = client("sdk-named", new ObservabilityOptions.Builder() + .serviceName("checkout").otlpEndpoint("http://127.0.0.1:9").backendUrl("http://127.0.0.1:9").build())) { + assertTrue(records.stream().anyMatch(r -> r.getMessage().contains("as service 'checkout'"))); + assertFalse(records.stream().anyMatch(r -> r.getLevel() == Level.WARNING + && r.getMessage().contains("serviceName"))); + } + } + @Test void sdkVersionReportsTheClasspathVersion() { assertTrue(OtelManager.sdkVersion().matches("\\d+\\.\\d+\\.\\d+.*"), OtelManager.sdkVersion()); From 79afcf98952113f71f91409dc213f8161a9f7306 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 02:59:29 +0000 Subject: [PATCH 41/47] docs: cover Spring Boot, OpenTelemetry versions and the Java agent in the README Written from following the README into fresh Spring Boot 3.2 to 4.1 apps with Maven and Gradle: - Spring Boot's BOM silently moves the plugin's OpenTelemetry 1.51 to 1.31 (3.2, too old), 1.38, 1.43, 1.49 or 1.62. Document the 1.38 minimum, the versions per Boot line, how to override opentelemetry.version, and keeping instrumentation libraries on the same core version (the Logback appender 2.17 on Boot 3.5 without the override hung requests with AbstractMethodError). - A Spring Boot section: the LDClient bean, shutdownHook(false) with LDObserve.shutdown() from a bean, Micrometer tracing wired to LDObserve.getOpenTelemetry() for request spans and errors, and the Logback and Log4j 2 appenders for application logs. Each recipe was run against a local collector. - What to set so the OpenTelemetry Java agent's request spans reach LaunchDarkly too. - The Maven snippet left out launchdarkly-java-server-sdk, which the plugin does not bring, so a Maven build failed with "package com.launchdarkly.sdk.server does not exist". Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../observability-java/README.md | 142 ++++++++++++++++++ 1 file changed, 142 insertions(+) diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 80398b13d6..980eb870e2 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -8,6 +8,7 @@ Official LaunchDarkly Observability plugin for the [Java Server SDK](https://git - Java 11+ - LaunchDarkly Java Server SDK 7.10.1+ (the first release with the plugin API). The plugin does not bring the SDK with it; declare it yourself. Older SDKs, such as the 7.4.0 that `launchdarkly-java-server-sdk-otel` 0.2.0 depends on, have no `Plugin` class and fail with `NoClassDefFoundError`. +- OpenTelemetry Java SDK 1.38.0+ on the runtime classpath. The plugin is built against 1.51.0, but a BOM in your build (Spring Boot's, for one) can change that version; see [OpenTelemetry versions](#opentelemetry-versions). ## Installation @@ -30,14 +31,49 @@ dependencies { launchdarkly-java-server-sdk-observability 0.1.0 + + com.launchdarkly + launchdarkly-java-server-sdk + 7.12.0 + ``` +The plugin does not bring the LaunchDarkly SDK with it, so you choose its version; declare both. + ### Dependencies you get - `io.opentelemetry:opentelemetry-api` is a compile-scoped (`api`) dependency, because `LDObserve` and `ObservabilityOptions` take OpenTelemetry API types such as `Attributes` and `Severity`. You do not need to declare it yourself. - OTLP is sent over HTTP with OpenTelemetry's JDK sender, which uses `java.net.http.HttpClient`. The plugin does **not** pull OkHttp, Okio or the Kotlin standard library onto your classpath. The build fails if any of those leak in. - The OpenTelemetry SDK and exporters are runtime dependencies, and they are the only ones: JSON is handled with the LaunchDarkly SDK's own `LDValue`, so no Gson or other JSON library is added. The plugin records flag evaluations with its own hook and does not depend on `launchdarkly-java-server-sdk-otel` or on the LaunchDarkly SDK itself. The build fails if the POM names anything outside `io.opentelemetry`. +### OpenTelemetry versions + +The plugin needs OpenTelemetry Java 1.38.0 or newer at runtime. Dependency-management BOMs override the version the plugin asks for, so check what your build resolves (`./gradlew dependencies --configuration runtimeClasspath` or `mvn dependency:tree -Dincludes=io.opentelemetry`): + +| Spring Boot | OpenTelemetry it manages | Plugin | +|-------------|--------------------------|--------| +| 3.2 | 1.31.0 | Too old: the plugin logs an error and stays off. Override the version. | +| 3.3 | 1.38.0 | Works | +| 3.4 | 1.43.0 | Works | +| 3.5 | 1.49.0 | Works | +| 4.1 | 1.62.0 | Works | + +To override Spring Boot's version, set its `opentelemetry.version` property: + +```groovy +// build.gradle, with io.spring.dependency-management +ext['opentelemetry.version'] = '1.51.0' +``` + +```xml + + + 1.51.0 + +``` + +Keep every `io.opentelemetry` artifact on one version. If you add OpenTelemetry instrumentation libraries (such as the Logback appender below), pick the release built on the same core version (instrumentation 2.17.x is built on 1.51.0) or override `opentelemetry.version` to match it. Mixing them fails at runtime with `AbstractMethodError` or `NoSuchMethodError`. + ## Usage ```java @@ -70,16 +106,122 @@ The plugin automatically: 2. Registers a tracing hook that records a span for each flag evaluation and adds a `feature_flag` event to the current span, enabling guarded rollouts and observability. 3. Fetches sampling configuration from the backend to control telemetry volume. Regex rules match anywhere in the value, as in the other SDKs; a rule whose pattern does not compile is skipped with a warning. +Flag-evaluation spans are children of whatever span is current when you evaluate. The plugin does not create request spans itself: in a web service, connect your HTTP instrumentation to the plugin (see [Spring Boot](#spring-boot)) or each evaluation becomes its own trace. + +On startup the plugin logs one line saying where it exports and under which service name, and warns if no service name is set. If it cannot start (a malformed endpoint, an OpenTelemetry version that is too old) it logs the cause as an error and stays a no-op; the LaunchDarkly client and your application keep running. + ### Running alongside other OpenTelemetry setups The plugin registers its SDK as `GlobalOpenTelemetry` when it can. When the global is already taken (the OpenTelemetry Java agent, your own SDK, a library that called `GlobalOpenTelemetry.get()` first, or `manualStart(true)` after such a call), the plugin keeps its own providers. Evaluation spans and everything sent through `LDObserve` still go to LaunchDarkly. The `feature_flag` event is added to whichever span is current, so it is exported by whoever owns that span. +`LDObserve.getOpenTelemetry()` returns the plugin's OpenTelemetry whether or not it is the global, for instrumentation that should export to LaunchDarkly through the plugin. + ### Lifecycle and multiple clients The OpenTelemetry providers are process-wide. The first `LDClient` that registers the plugin starts them and its SDK key identifies the project for everything exported. Another `LDClient` with the same SDK key shares them. An `LDClient` with a different SDK key logs a warning and its plugin starts nothing: its flag evaluations are still recorded, under the first client's SDK key. Closing an `LDClient` does not stop the providers. Call `LDObserve.shutdown()` when your application stops (for example after closing the client) to flush and stop them; the plugin also registers one JVM shutdown hook that does the same, unless you turn it off with `shutdownHook(false)` (see [Spring Boot](#spring-boot)). +### OpenTelemetry Java agent + +With the agent attached, the agent owns the global and creates the request spans, and exports them to its own endpoint. The plugin's evaluation spans point at those request spans, so for whole traces in LaunchDarkly send the agent's data there too: + +```bash +export OTEL_EXPORTER_OTLP_ENDPOINT=https://otel.observability.app.launchdarkly.com:4318 +export OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf +export OTEL_SERVICE_NAME=my-service +export OTEL_RESOURCE_ATTRIBUTES=highlight.project_id=YOUR_SDK_KEY +java -javaagent:opentelemetry-javaagent.jar -jar app.jar +``` + +`highlight.project_id` is the resource attribute the plugin itself sets to the SDK key. The agent also captures Logback and Log4j records and exports them the same way. + +## Spring Boot + +Build one `LDClient` bean with the plugin and let Spring close it. Spring Boot shuts down from its own JVM hook, after draining in-flight requests, so switch off the plugin's hook and stop the plugin from a bean instead; otherwise telemetry from requests that finish during the drain is lost. + +```java +@Configuration +public class LaunchDarklyConfig { + @Bean(destroyMethod = "close") + public LDClient ldClient(@Value("${launchdarkly.sdk-key}") String sdkKey) { + ObservabilityOptions options = new ObservabilityOptions.Builder() + .serviceName("my-service") + .serviceVersion("1.0.0") + .environment("production") + .shutdownHook(false) + .build(); + LDConfig config = new LDConfig.Builder() + .plugins(Components.plugins().setPlugins(List.of(new ObservabilityPlugin(options)))) + .build(); + return new LDClient(sdkKey, config); + } + + /** Flushes and stops the plugin when the context closes. */ + @Bean(destroyMethod = "shutdown") + public ObservabilityShutdown observabilityShutdown() { + return new ObservabilityShutdown(); + } + + public static class ObservabilityShutdown { + public void shutdown() { + LDObserve.shutdown(); + } + } +} +``` + +### Request spans and errors + +Spring Boot's Micrometer tracing creates a span per HTTP request and records unhandled exceptions on it. Add the OpenTelemetry bridge and hand it the plugin's OpenTelemetry; Boot then exports request spans to LaunchDarkly with the flag-evaluation spans as children, the `feature_flag` events on the request span, and exceptions as error events. The `LDClient` parameter makes Spring start the plugin first. + +```groovy +implementation 'org.springframework.boot:spring-boot-starter-actuator' +implementation 'io.micrometer:micrometer-tracing-bridge-otel' +``` + +```java +@Bean +public OpenTelemetry openTelemetry(LDClient ldClient) { + return LDObserve.getOpenTelemetry(); +} +``` + +The plugin's tracer provider records every span, so `management.tracing.sampling.probability` does not apply; the LaunchDarkly sampling rules decide what is kept. + +### Logs + +`LDObserve.recordLog` exports a record directly. To export what you already log through SLF4J and Logback, add the OpenTelemetry Logback appender (see [OpenTelemetry versions](#opentelemetry-versions) for the version) and install it on the plugin's OpenTelemetry: + +```groovy +implementation 'io.opentelemetry.instrumentation:opentelemetry-logback-appender-1.0:2.17.0-alpha' +``` + +```xml + + + + + + + + + +``` + +```java +@Bean +public OpenTelemetry openTelemetry(LDClient ldClient) { + OpenTelemetry openTelemetry = LDObserve.getOpenTelemetry(); + OpenTelemetryAppender.install(openTelemetry); + return openTelemetry; +} +``` + +Records logged inside a request carry its trace id. `logsApiLevel` still applies. + +With Log4j 2 (`spring-boot-starter-log4j2`) use `io.opentelemetry.instrumentation:opentelemetry-log4j-appender-2.17` instead: add `` to the appenders in `log4j2-spring.xml` (with `packages="io.opentelemetry.instrumentation.log4j.appender.v2_17"` on ``), reference it from the root logger, and call `io.opentelemetry.instrumentation.log4j.appender.v2_17.OpenTelemetryAppender.install(openTelemetry)` in the bean. + ## Manual Instrumentation Use `LDObserve` for custom telemetry: From 047c5d330ceccc1b50c1f21c8d490d28f99e7db9 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Thu, 22 Oct 2026 03:10:17 +0000 Subject: [PATCH 42/47] ci: test the Java plugin against the oldest supported LaunchDarkly SDK (7.10.1) Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .github/workflows/java-observability.yml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/.github/workflows/java-observability.yml b/.github/workflows/java-observability.yml index c86d440d21..e0710b5767 100644 --- a/.github/workflows/java-observability.yml +++ b/.github/workflows/java-observability.yml @@ -55,6 +55,11 @@ jobs: - name: Build, test and verify the published POM run: ./gradlew :lib:build --no-daemon --console=plain + # The plugin needs the Plugin API, first shipped in SDK 7.10.1. + - name: Test against the oldest supported LaunchDarkly SDK + if: matrix.java == 11 + run: ./gradlew :lib:test -PldServerSdkVersion=7.10.1 --no-daemon --console=plain + - name: Upload test reports if: always() uses: actions/upload-artifact@v4 From 2425699139e7fd9b592bccf90f634fdc32b2f3d1 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 26 Oct 2026 21:33:54 +0000 Subject: [PATCH 43/47] fix: drop the duplicate exception.stacktrace span attribute in recordError span.recordException already records the stack trace on its exception event. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../java/com/launchdarkly/observability/LDObserve.java | 7 ------- 1 file changed, 7 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index 46e5426980..ca122a6e55 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -10,9 +10,6 @@ import io.opentelemetry.api.trace.StatusCode; import io.opentelemetry.api.trace.Tracer; -import java.io.PrintWriter; -import java.io.StringWriter; - /** * Static singleton public API for LaunchDarkly Observability. * @@ -96,10 +93,6 @@ public static void recordError(Throwable throwable, Attributes attributes) { try { span.setStatus(StatusCode.ERROR, throwable.getMessage()); span.recordException(throwable); - - StringWriter sw = new StringWriter(); - throwable.printStackTrace(new PrintWriter(sw)); - span.setAttribute("exception.stacktrace", sw.toString()); } finally { span.end(); } From e75b5a7346eeb479dfbfbf8722626588f143c8b8 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 26 Oct 2026 21:33:54 +0000 Subject: [PATCH 44/47] fix: fetch the sampling config when LDObserve.start is used without the plugin The fetch now lives in OtelManager.fetchSamplingConfig and runs once per SDK key, so plugin registration and LDObserve.start share it: standalone use is sampled, and plugin + manualStart still fetches once. A key other than the registered client's does not replace that client's config. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../launchdarkly/observability/LDObserve.java | 10 +++-- .../observability/ObservabilityPlugin.java | 26 ++---------- .../observability/internal/OtelManager.java | 40 +++++++++++++++++++ .../internal/PluginUserFlowTest.java | 12 ++++++ 4 files changed, 62 insertions(+), 26 deletions(-) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index ca122a6e55..bc8a783212 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -134,11 +134,15 @@ public static OpenTelemetry getOpenTelemetry() { } /** - * Manually starts the OTLP providers. Only needed when - * {@link ObservabilityOptions.Builder#manualStart(boolean)} is true. + * Manually starts the OTLP providers and fetches the sampling + * configuration. Needed when + * {@link ObservabilityOptions.Builder#manualStart(boolean)} is true, or + * to use {@code LDObserve} without an {@code LDClient}. */ public static void start(String sdkKey, ObservabilityOptions options) { - OtelManager.initialize(sdkKey, options); + if (OtelManager.initialize(sdkKey, options)) { + OtelManager.fetchSamplingConfig(sdkKey, options); + } } /** diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java index d9065f218a..d7e5ece790 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/ObservabilityPlugin.java @@ -1,10 +1,7 @@ package com.launchdarkly.observability; import com.launchdarkly.observability.internal.EvaluationTracingHook; -import com.launchdarkly.observability.internal.GraphQLClient; import com.launchdarkly.observability.internal.OtelManager; -import com.launchdarkly.observability.internal.SamplingApiService; -import com.launchdarkly.observability.internal.sampling.SamplingConfig; import com.launchdarkly.sdk.server.LDClient; import com.launchdarkly.sdk.server.integrations.EnvironmentMetadata; import com.launchdarkly.sdk.server.integrations.Hook; @@ -13,7 +10,6 @@ import java.util.Collections; import java.util.List; -import java.util.logging.Level; import java.util.logging.Logger; /** @@ -95,25 +91,9 @@ public void register(LDClient client, EnvironmentMetadata metadata) { return; } - // Fetch sampling config in background - Thread samplingThread = new Thread(() -> { - try { - GraphQLClient graphQLClient = new GraphQLClient( - options.getBackendUrl(), options.getCustomHeaders(), options.getProxySelector()); - SamplingApiService samplingService = new SamplingApiService(graphQLClient); - SamplingConfig config = samplingService.getSamplingConfig(sdkKey); - if (config != null) { - OtelManager.setSamplingConfig(config); - if (options.isDebug()) { - log.info("Loaded sampling config: " + config); - } - } - } catch (Exception e) { - log.log(Level.WARNING, "Failed to fetch sampling config", e); - } - }, "ld-observability-sampling"); - samplingThread.setDaemon(true); - samplingThread.start(); + // Fetched in the background; with manual start it is kept and + // applied when LDObserve.start runs. + OtelManager.fetchSamplingConfig(sdkKey, options); } @Override diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index a930e95304..0328d28f38 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -70,6 +70,9 @@ public final class OtelManager { // Guarded by INIT_LOCK. The SDK key of the first LDClient that // registered the plugin; the providers carry it as the project id. private static String registeredSdkKey; + // Guarded by INIT_LOCK. The SDK key whose sampling config has been + // requested, so the plugin and LDObserve.start fetch it only once. + private static String samplingFetchSdkKey; private final SdkTracerProvider tracerProvider; private final SdkLoggerProvider loggerProvider; @@ -341,6 +344,41 @@ public static void setSamplingConfig(SamplingConfig config) { } } + /** + * Fetches the sampling configuration for this SDK key on a background + * daemon thread and applies it with {@link #setSamplingConfig}. Called + * by the plugin on registration and by {@code LDObserve.start}, so + * standalone use without an {@code LDClient} is sampled too. A key whose + * config has already been requested is not fetched again, and a key other + * than the registered client's does not replace that client's config. + */ + public static void fetchSamplingConfig(String sdkKey, ObservabilityOptions options) { + synchronized (INIT_LOCK) { + if (sdkKey == null || sdkKey.equals(samplingFetchSdkKey) + || (registeredSdkKey != null && !registeredSdkKey.equals(sdkKey))) { + return; + } + samplingFetchSdkKey = sdkKey; + } + Thread samplingThread = new Thread(() -> { + try { + GraphQLClient graphQLClient = new GraphQLClient( + options.getBackendUrl(), options.getCustomHeaders(), options.getProxySelector()); + SamplingConfig config = new SamplingApiService(graphQLClient).getSamplingConfig(sdkKey); + if (config != null) { + setSamplingConfig(config); + if (options.isDebug()) { + log.info("Loaded sampling config: " + config); + } + } + } catch (Exception e) { + log.log(Level.WARNING, "Failed to fetch sampling config", e); + } + }, "ld-observability-sampling"); + samplingThread.setDaemon(true); + samplingThread.start(); + } + /** * A view of the plugin's OpenTelemetry that resolves the providers on * every call, so it works even when taken before the providers start. @@ -479,6 +517,7 @@ public static void shutdown() { synchronized (INIT_LOCK) { manager = INSTANCE.getAndSet(null); registeredSdkKey = null; + samplingFetchSdkKey = null; } if (manager != null) { manager.shutdownProviders(); @@ -510,6 +549,7 @@ static void resetForTest() { manager = INSTANCE.getAndSet(null); PENDING_SAMPLING_CONFIG.set(null); registeredSdkKey = null; + samplingFetchSdkKey = null; if (shutdownHook != null) { try { Runtime.getRuntime().removeShutdownHook(shutdownHook); diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index 52c8dc0c90..7942104253 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -156,6 +156,18 @@ void manualStartKeepsSamplingConfigFetchedBeforeProvidersStart() throws Exceptio assertTrue(waitForSamplingApplied(), "manual start lost the sampling config"); assertTrue(waitUntilHealthCheckDropped(), "manual start did not apply the sampling rule"); } + assertEquals(1, samplingQueries.size(), "manual start must not fetch the sampling config again"); + } + + @Test + void standaloneStartFetchesAndAppliesSamplingConfig() throws Exception { + startCollector(); + + LDObserve.start("sdk-test", options(true)); + + assertTrue(waitForSamplingQuery(), "standalone start did not fetch sampling config"); + assertTrue(waitForSamplingApplied(), "standalone start did not apply the sampling config"); + assertTrue(waitUntilHealthCheckDropped(), "standalone start did not apply the sampling rule"); } @Test From ac160d11e345be903edf4de4995d1f9bfe7f4d87 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Mon, 26 Oct 2026 21:33:54 +0000 Subject: [PATCH 45/47] ci: publish package hashes and SLSA provenance for the Java plugin The publish action hashes the released jars, and release-please and manual publish run the SLSA generator on them, as for Python, .NET and Ruby. The jars are named after the Maven artifactId so the provenance subjects match Maven Central. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .github/actions/publish-java-sdk/action.yml | 12 ++++++++++++ .github/workflows/manual-publish.yml | 19 +++++++++++++++++++ .github/workflows/release-please.yml | 15 +++++++++++++++ .../observability-java/lib/build.gradle | 6 ++++++ 4 files changed, 52 insertions(+) diff --git a/.github/actions/publish-java-sdk/action.yml b/.github/actions/publish-java-sdk/action.yml index e0aa139c3d..f3084d8f04 100644 --- a/.github/actions/publish-java-sdk/action.yml +++ b/.github/actions/publish-java-sdk/action.yml @@ -26,6 +26,11 @@ inputs: required: false default: 'false' +outputs: + package-hashes: + description: 'Base64 encoded SHA256 hashes of published packages' + value: ${{ steps.package-hashes.outputs.package-hashes }} + runs: using: 'composite' steps: @@ -74,3 +79,10 @@ runs: run: | ./gradlew :lib:build --no-daemon --console=plain echo "Dry run. Not publishing." + + - name: Hash build files for provenance + id: package-hashes + shell: bash + working-directory: ${{ inputs.workspace-path }}/lib/build/libs + run: | + echo "package-hashes=$(sha256sum launchdarkly-java-server-sdk-observability-*.jar | base64 -w0)" >> "$GITHUB_OUTPUT" diff --git a/.github/workflows/manual-publish.yml b/.github/workflows/manual-publish.yml index 6d44502643..4764c89b63 100644 --- a/.github/workflows/manual-publish.yml +++ b/.github/workflows/manual-publish.yml @@ -30,6 +30,10 @@ on: description: 'Should release the launchdarkly-java-server-sdk-observability package.' type: boolean required: true + java_tag_name: + description: 'The tag name for the java package. Should be set when publishing a java package.' + type: string + required: false release_launchdarkly_dotnet: description: 'Should release @launchdarkly/observability-dotnet package.' type: boolean @@ -152,6 +156,8 @@ jobs: if: ${{ inputs.release_launchdarkly_java == true }} permissions: id-token: write + outputs: + package-hashes: ${{ steps.publish.outputs.package-hashes }} steps: - name: Checkout uses: actions/checkout@v4 @@ -165,6 +171,19 @@ jobs: dry-run: ${{ inputs.dry-run }} prerelease: ${{ inputs.prerelease }} + publish-java-sdk-provenance: + needs: ['publish-java-sdk'] + if: ${{ inputs.release_launchdarkly_java == true && inputs.dry-run == false }} + permissions: + actions: read + id-token: write + contents: write + uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.0.0 + with: + base64-subjects: '${{ needs.publish-java-sdk.outputs.package-hashes }}' + upload-assets: true + upload-tag-name: ${{ inputs.java_tag_name }} + publish-dotnet-sdk: runs-on: ubuntu-latest if: ${{ inputs.release_launchdarkly_dotnet == true }} diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml index a4132ba23e..19effc14cf 100644 --- a/.github/workflows/release-please.yml +++ b/.github/workflows/release-please.yml @@ -110,6 +110,8 @@ jobs: contents: write needs: ['release-package'] if: ${{ needs.release-package.outputs.java-plugin-released == 'true' }} + outputs: + package-hashes: ${{ steps.publish.outputs.package-hashes }} steps: - name: Checkout uses: actions/checkout@v4 @@ -121,6 +123,19 @@ jobs: workspace-path: sdk/@launchdarkly/observability-java aws-role-arn: ${{ vars.AWS_ROLE_ARN }} + release-java-provenance: + needs: ['release-package', 'release-java-plugin'] + if: ${{ needs.release-package.outputs.java-plugin-released == 'true' }} + permissions: + actions: read + id-token: write + contents: write + uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.0.0 + with: + base64-subjects: '${{ needs.release-java-plugin.outputs.package-hashes }}' + upload-assets: true + upload-tag-name: ${{ needs.release-package.outputs.java-plugin-tag-name }} + release-dotnet-plugin: runs-on: ubuntu-latest permissions: diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index 42a8af8659..cec2ffcb43 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -15,6 +15,12 @@ java { withSourcesJar() } +// Name the jars after the Maven artifactId, so the provenance subjects +// match the files on Maven Central. +base { + archivesName = 'launchdarkly-java-server-sdk-observability' +} + ext { otelVersion = '1.51.0' // The SDK the plugin compiles and tests against. The plugin needs the From 77e6fffb2ea0d2ce5af5c6902921b401ebfb37fa Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 27 Oct 2026 17:57:11 +0000 Subject: [PATCH 46/47] fix: record an error on the current span when the plugin started it Like the other server SDKs, recordError adds the exception event, with the caller's attributes, to the current span instead of starting a separate highlight.error span. A span from another provider (the Java agent or the application's own SDK) would not reach LaunchDarkly, so there the error is still a new error span, a child of the current one in the same trace. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- .../springboot/ApplicationTelemetryTest.java | 3 +- .../observability-java/README.md | 3 +- .../launchdarkly/observability/LDObserve.java | 11 +++- .../observability/internal/OtelManager.java | 21 ++++++- .../internal/PluginUserFlowTest.java | 57 +++++++++++++++++++ 5 files changed, 91 insertions(+), 4 deletions(-) diff --git a/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java b/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java index edfdca6ef6..7b0f233d58 100644 --- a/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java +++ b/e2e/java-plugin-spring-boot/src/test/java/com/launchdarkly/observability/example/springboot/ApplicationTelemetryTest.java @@ -108,7 +108,8 @@ void errorIsRecordedAndAnswered500() { assertThat(response.getStatusCode()).isEqualTo(HttpStatus.INTERNAL_SERVER_ERROR); assertThat(response.getBody()).isEqualTo("error: random error from the Spring Boot example\n"); - awaitExported(TRACES, "highlight.error", "java.lang.IllegalStateException", + // Recorded as an exception event on the filter's request span. + awaitExported(TRACES, "GET /error", "java.lang.IllegalStateException", "random error from the Spring Boot example", "exception.stacktrace"); awaitExported(LOGS, "GET /error -> 500", "ERROR"); } diff --git a/sdk/@launchdarkly/observability-java/README.md b/sdk/@launchdarkly/observability-java/README.md index 980eb870e2..1f784a55ad 100644 --- a/sdk/@launchdarkly/observability-java/README.md +++ b/sdk/@launchdarkly/observability-java/README.md @@ -240,7 +240,8 @@ LDObserve.recordMetric("queue.depth", 12.0, Attributes.empty()); // Record logs LDObserve.recordLog("User logged in", Severity.INFO, Attributes.empty()); -// Record errors +// Record errors: added to the current span if the plugin started it, +// otherwise recorded on a new error span LDObserve.recordError(exception, Attributes.empty()); // Create spans diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java index bc8a783212..babfb5a030 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/LDObserve.java @@ -80,12 +80,21 @@ public static void recordLog(String message, Severity severity, Attributes attri } /** - * Records an error as a span with exception details. + * Records an error with exception details. Like the other LaunchDarkly + * server SDKs, an error inside a span the plugin exports is added to that + * span as an exception event, with {@code attributes} on the event. + * Otherwise it is recorded on a new error span, a child of the current + * span if there is one. */ public static void recordError(Throwable throwable, Attributes attributes) { if (throwable == null) { return; } + Span current = Span.current(); + if (current.isRecording() && OtelManager.ownsSpan(current)) { + current.recordException(throwable, orEmpty(attributes)); + return; + } Tracer tracer = OtelManager.getTracer(); Span span = tracer.spanBuilder(Constants.ERROR_SPAN_NAME) .setAllAttributes(attributes) diff --git a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java index 0328d28f38..7704f15117 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java +++ b/sdk/@launchdarkly/observability-java/lib/src/main/java/com/launchdarkly/observability/internal/OtelManager.java @@ -17,6 +17,7 @@ import io.opentelemetry.api.metrics.LongUpDownCounter; import io.opentelemetry.api.metrics.Meter; import io.opentelemetry.api.metrics.MeterProvider; +import io.opentelemetry.api.trace.Span; import io.opentelemetry.api.trace.Tracer; import io.opentelemetry.api.trace.TracerProvider; import io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator; @@ -36,6 +37,7 @@ import io.opentelemetry.sdk.metrics.SdkMeterProvider; import io.opentelemetry.sdk.metrics.export.PeriodicMetricReader; import io.opentelemetry.sdk.resources.Resource; +import io.opentelemetry.sdk.trace.ReadableSpan; import io.opentelemetry.sdk.trace.SdkTracerProvider; import io.opentelemetry.sdk.trace.export.BatchSpanProcessor; import io.opentelemetry.sdk.trace.samplers.Sampler; @@ -78,6 +80,7 @@ public final class OtelManager { private final SdkLoggerProvider loggerProvider; private final SdkMeterProvider meterProvider; private final OpenTelemetrySdk openTelemetrySdk; + private final Resource resource; private final Tracer tracer; private final Logger logger; private final Meter meter; @@ -95,12 +98,14 @@ private OtelManager( SdkLoggerProvider loggerProvider, SdkMeterProvider meterProvider, OpenTelemetrySdk openTelemetrySdk, + Resource resource, CustomSampler customSampler ) { this.tracerProvider = tracerProvider; this.loggerProvider = loggerProvider; this.meterProvider = meterProvider; this.openTelemetrySdk = openTelemetrySdk; + this.resource = resource; this.customSampler = customSampler; this.tracer = openTelemetrySdk.getTracer( @@ -315,7 +320,7 @@ private static OtelManager create(String sdkKey, ObservabilityOptions options) { } OtelManager manager = new OtelManager( - tracerProvider, loggerProvider, meterProvider, sdk, customSampler); + tracerProvider, loggerProvider, meterProvider, sdk, resource, customSampler); // One line at startup, like the LaunchDarkly SDK's own, so a user // can see where telemetry goes and under which service name. @@ -444,6 +449,20 @@ public static Tracer getTracer(String instrumentationScopeName) { return OpenTelemetry.noop().getTracer(instrumentationScopeName); } + /** + * Whether the span was started by the plugin's own tracer provider, so + * it is exported to LaunchDarkly. A span from the Java agent or the + * application's own SDK is not: anything recorded on it goes to that + * provider's exporter instead. + */ + public static boolean ownsSpan(Span span) { + OtelManager manager = INSTANCE.get(); + // Spans share their provider's Resource instance. + return manager != null + && span instanceof ReadableSpan + && ((ReadableSpan) span).toSpanData().getResource() == manager.resource; + } + public static Logger getLogger() { OtelManager manager = INSTANCE.get(); if (manager != null) { diff --git a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java index 7942104253..7c01717ac8 100644 --- a/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java +++ b/sdk/@launchdarkly/observability-java/lib/src/test/java/com/launchdarkly/observability/internal/PluginUserFlowTest.java @@ -219,6 +219,63 @@ void flagEvaluationExportsWhenGlobalWasClaimedFirst() throws Exception { } } + @Test + void recordErrorInsidePluginSpanAddsExceptionToThatSpan() throws Exception { + startCollector(); + LDObserve.start("sdk-test", options(true)); + + Span request = LDObserve.startSpan("GET /checkout", Attributes.empty()); + try (Scope ignored = request.makeCurrent()) { + LDObserve.recordError(new IllegalStateException("payment declined"), + Attributes.of(AttributeKey.stringKey("order.id"), "order-42")); + } finally { + request.end(); + } + LDObserve.flush(); + + assertTrue(payloadContains(traces, "GET /checkout"), "request span was not exported: " + summarize(traces)); + assertTrue(payloadContains(traces, "payment declined"), "exception was not recorded: " + summarize(traces)); + assertTrue(payloadContains(traces, "order-42"), "attributes were not recorded on the exception event"); + assertFalse(payloadContains(traces, Constants.ERROR_SPAN_NAME), + "recordError started a separate error span instead of using the current span"); + } + + @Test + void recordErrorInsideForeignSpanExportsErrorSpanInSameTrace() throws Exception { + // The application (or the OpenTelemetry Java agent) owns the current + // span; an exception recorded on it would never reach LaunchDarkly. + InMemorySpanExporter appExporter = InMemorySpanExporter.create(); + SdkTracerProvider appTracerProvider = SdkTracerProvider.builder() + .addSpanProcessor(SimpleSpanProcessor.create(appExporter)) + .build(); + OpenTelemetrySdk appSdk = OpenTelemetrySdk.builder() + .setTracerProvider(appTracerProvider) + .buildAndRegisterGlobal(); + + startCollector(); + LDObserve.start("sdk-test", options(true)); + + try { + Span request = appSdk.getTracer("app").spanBuilder("GET /checkout").startSpan(); + try (Scope ignored = request.makeCurrent()) { + LDObserve.recordError(new IllegalStateException("payment declined"), Attributes.empty()); + } finally { + request.end(); + } + LDObserve.flush(); + + assertTrue(payloadContains(traces, Constants.ERROR_SPAN_NAME), + "error span was not exported to LaunchDarkly: " + summarize(traces)); + assertTrue(payloadContains(traces, "payment declined")); + assertTrue(rawPayloadContains(rawTraces, request.getSpanContext().getTraceIdBytes()), + "error span is not in the application's trace"); + assertTrue(appExporter.getFinishedSpanItems().get(0).getEvents().isEmpty(), + "the exception went to the application's span instead of LaunchDarkly"); + } finally { + appTracerProvider.shutdown(); + } + } + @Test void flagEvaluationExportsUnderApplicationOwnedGlobal() throws Exception { // The application (or the OpenTelemetry Java agent) owns the global. From 59f581f4fae1e1fc23220a44f25de72c574638c5 Mon Sep 17 00:00:00 2001 From: Vadim Korolik Date: Tue, 27 Oct 2026 17:57:11 +0000 Subject: [PATCH 47/47] build: compile with options.release instead of source/target compatibility --release checks API use against the target JDK, so a build on JDK 17 or 21 cannot call an API that Java 11 lacks. The published module metadata still declares Java 11. Co-Authored-By: Claude Opus 5.5 Generated-by: termag --- e2e/java-plugin-spring-boot/build.gradle | 7 +++---- e2e/java-plugin/build.gradle | 5 ++--- sdk/@launchdarkly/observability-java/lib/build.gradle | 8 ++++++-- 3 files changed, 11 insertions(+), 9 deletions(-) diff --git a/e2e/java-plugin-spring-boot/build.gradle b/e2e/java-plugin-spring-boot/build.gradle index 0a6cc7fa09..d71c265e06 100644 --- a/e2e/java-plugin-spring-boot/build.gradle +++ b/e2e/java-plugin-spring-boot/build.gradle @@ -13,10 +13,9 @@ repositories { mavenCentral() } -java { - // Spring Boot 3 needs Java 17. The plugin itself targets Java 11. - sourceCompatibility = JavaVersion.VERSION_17 - targetCompatibility = JavaVersion.VERSION_17 +// Spring Boot 3 needs Java 17. The plugin itself targets Java 11. +tasks.withType(JavaCompile).configureEach { + options.release = 17 } // The plugin version comes from the SDK's gradle.properties, which diff --git a/e2e/java-plugin/build.gradle b/e2e/java-plugin/build.gradle index 06d077c171..b7e29447e0 100644 --- a/e2e/java-plugin/build.gradle +++ b/e2e/java-plugin/build.gradle @@ -11,9 +11,8 @@ repositories { mavenCentral() } -java { - sourceCompatibility = JavaVersion.VERSION_11 - targetCompatibility = JavaVersion.VERSION_11 +tasks.withType(JavaCompile).configureEach { + options.release = 11 } // The plugin version comes from the SDK's gradle.properties, which diff --git a/sdk/@launchdarkly/observability-java/lib/build.gradle b/sdk/@launchdarkly/observability-java/lib/build.gradle index cec2ffcb43..4fc25a0fb6 100644 --- a/sdk/@launchdarkly/observability-java/lib/build.gradle +++ b/sdk/@launchdarkly/observability-java/lib/build.gradle @@ -9,12 +9,16 @@ repositories { } java { - sourceCompatibility = JavaVersion.VERSION_11 - targetCompatibility = JavaVersion.VERSION_11 withJavadocJar() withSourcesJar() } +// --release compiles against the Java 11 API, not just Java 11 bytecode, so +// a build on JDK 17 or 21 cannot call an API that Java 11 lacks. +tasks.withType(JavaCompile).configureEach { + options.release = 11 +} + // Name the jars after the Maven artifactId, so the provenance subjects // match the files on Maven Central. base {