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test(cloudflare): Add e2e test for the Cloudflare trace id without tracing - #25643

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jp/cloudflare-native-trace-id-eventsfrom
jp/cloudflare-without-tracing-e2e
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JPeer264 wants to merge 4 commits into
jp/cloudflare-native-trace-id-eventsfrom
jp/cloudflare-without-tracing-e2e

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This adds the e2e app cloudflare-workers-without-tracing-send-to-sentry. It deploys a real Worker with tracesSampleRate: 0 and Cloudflare traces on, and checks that an error in Sentry has the Cloudflare trace id and the Cloudflare request span as its parent. More tests without tracing can go into this app.

Why

The integration tests of #25613 run on a local workerd. This test checks the fix on Cloudflare, against the span that Workers Observability stores for the request.

Sentry traces

With #25613, the error is in the Cloudflare trace: https://sentry-sdks.sentry.io/explore/traces/trace/666e09b1979b18724b8fd77faed99e1b/?project=4510555608449024&statsPeriod=14d

Without #25613, the error has its own trace: https://sentry-sdks.sentry.io/explore/traces/trace/bc56b593dcf941c7b21af6216f215dff/?project=4510555608449024&statsPeriod=14d

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github-actions Bot commented Oct 22, 2026 •

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size-limit report 📦

Compared: 6352e60 (PR test merge using develop at 2c3a3b2)

Against: b722d3c (develop) · base run #64026

⚠️ Baseline mismatch: 4 develop commit(s) in the PR build are missing from the baseline. Their size changes also affect this comparison. Compare commits. Re-run once develop's baseline build for 2c3a3b2 finishes.

Path Size % Change Change
@sentry/browser 30.39 kB - -
@sentry/browser - with treeshaking flags 28.5 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 28.4 kB - -
@sentry/browser (incl. Tracing) 52.66 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 52.66 kB - -
@sentry/browser (incl. Tracing, Profiling) 55.59 kB - -
@sentry/browser (incl. Tracing, Replay) 92.89 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 81.5 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 97.63 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 110.6 kB - -
@sentry/browser (incl. Feedback) 47.95 kB - -
@sentry/browser (incl. sendFeedback) 35.47 kB - -
@sentry/browser (incl. FeedbackAsync) 40.57 kB - -
@sentry/browser (incl. Metrics) 31.4 kB - -
@sentry/browser (incl. Logs) 31.68 kB - -
@sentry/browser (incl. Metrics & Logs) 32.36 kB - -
@sentry/react 32.2 kB - -
@sentry/react (incl. Tracing) 54.94 kB - -
@sentry/vue 38.67 kB - -
@sentry/vue (incl. Tracing) 55.55 kB - -
@sentry/svelte 30.42 kB - -
@sentry/remix (Remix 3 client bundle) 57.71 kB - -
CDN Bundle 32.11 kB - -
CDN Bundle (incl. Tracing) 53.14 kB - -
CDN Bundle (incl. Logs, Metrics) 34.31 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 55.09 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 75.76 kB - -
CDN Bundle (incl. Tracing, Replay) 91.3 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 93.26 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 97.44 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 99.44 kB - -
CDN Bundle - uncompressed 94.47 kB - -
CDN Bundle (incl. Tracing) - uncompressed 157.46 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 101.02 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 163.43 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 232.57 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 279.15 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 285.1 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 292.85 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 298.79 kB - -
@sentry/nextjs (client) 57.79 kB - -
@sentry/sveltekit (client) 53.11 kB - -
@sentry/core/server 44.34 kB - -
@sentry/core/browser 13.95 kB - -
@sentry/node 155.09 kB +0.01% +15 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection) 81.67 kB -0.01% -2 B 🔽
@sentry/node - without tracing 95.84 kB +0.03% +24 B 🔺
@sentry/node - without channel injection 135.73 kB +0.02% +22 B 🔺
@sentry/aws-serverless 104.01 kB +0.03% +25 B 🔺
@sentry/cloudflare (withSentry) - minified 198.52 kB +0.22% +424 B 🔺
@sentry/cloudflare (withSentry) 493.18 kB +0.22% +1.07 kB 🔺
@sentry/nextjs/cloudflare (withSentry) - minified 219.1 kB +0.2% +424 B 🔺

View base workflow run

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github-actions Bot commented Oct 22, 2026 •

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Optional E2E tests

Some optional checks were not successful. They do not block the merge. 1 not successful, 67 successful. See the run.

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❌ CI: Optional E2E Tests / E2E node-anthropic-send-to-sentry (latest) Test (optional) Failing after 3m Details
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✅ CI: Optional E2E Tests / E2E deno (latest) Test (optional) Successful in 47s Details
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✅ CI: Optional E2E Tests / E2E node-openai-decisions-send-to-sentry Test (optional) Successful in 1m Details
✅ CI: Optional E2E Tests / E2E cloudflare-think (ai v6) Test (optional) Successful in 50s Details
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@JPeer264
JPeer264 added this pull request to stack #25674 October 23, 2026 06:16
@JPeer264
JPeer264 force-pushed the jp/cloudflare-without-tracing-e2e branch 4 times, most recently from d17e4c0 to 56b314e Compare October 25, 2026 11:39
The SDK now reads `ctx.tracing.getActiveSpan().spanContext()` and sets
the propagation context to the Cloudflare trace id and span id. Errors,
logs and spans then use the same trace id as the spans that Cloudflare
exports, also when `tracesSampleRate` is 0. An incoming `sentry-trace`
header keeps precedence. Runtimes without `spanContext()` and invocations
that Cloudflare does not trace keep the current behavior.

`spanContext()` ships in workerd 1.20261009.1, so only the optional CI
job with the latest wrangler runs the new code path. The integration
tests select the expected values of each runtime with
`supports({ minWorkerd })`. The latest wrangler traces every local
invocation, so a root span can have the Cloudflare span as parent, and
the tests find the child segment by its parent instead.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@JPeer264
JPeer264 force-pushed the jp/cloudflare-without-tracing-e2e branch from 56b314e to a338f2a Compare October 27, 2026 15:52
@JPeer264
JPeer264 force-pushed the jp/cloudflare-without-tracing-e2e branch from a338f2a to 18e73f2 Compare October 27, 2026 16:35
JPeer264 and others added 2 commits October 28, 2026 17:06
…acing

The new `cloudflare-workers-without-tracing-send-to-sentry` app deploys a real
Worker with `tracesSampleRate: 0` and Cloudflare traces on. Its test checks that
an error in Sentry has the trace id of the Cloudflare trace and the Cloudflare
request span as its parent.

The test finds the Cloudflare request span in Workers Logs by the `cf-ray` of the
request, with the new `fetchWorkersLogsEvents` helper. The query endpoint needs a
`CLOUDFLARE_API_TOKEN` with "Workers Observability: Edit".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@JPeer264
JPeer264 force-pushed the jp/cloudflare-without-tracing-e2e branch from 18e73f2 to 2968e79 Compare October 28, 2026 23:25
@JPeer264

JPeer264 commented Nov 9, 2026

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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@JPeer264
JPeer264 marked this pull request as ready for review November 9, 2026 12:03
@JPeer264
JPeer264 requested review from a team as code owners November 9, 2026 12:03
@JPeer264
JPeer264 requested review from Lms24, andreiborza, chargome, isaacs and msonnb and removed request for a team November 9, 2026 12:03
@JPeer264
JPeer264 requested review from nicohrubec and removed request for Lms24, chargome, isaacs and msonnb November 9, 2026 12:03
@JPeer264 JPeer264 self-assigned this Nov 9, 2026
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does it provide any benefit for us to actually send this to sentry instead of just checking the data that leaves the sdk as we do with other e2e tests? this introduces risk of flakiness and we also moved away from this again for the ai tests

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