Fix #36178: show node name in admin panel

Author: LEDfan

src/main/java/eu/openanalytics/containerproxy/backend/docker/DockerSwarmBackend.java

@@ -32,6 +32,7 @@
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.BackendContainerNameKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.ContainerImageKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.InstanceIdKey;
+import eu.openanalytics.containerproxy.model.runtime.runtimevalues.NodeNameKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.RuntimeValue;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.RuntimeValueKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.UserIdKey;
@@ -220,6 +221,7 @@ public Proxy startContainer(Authentication user, Container initialContainer, Con
                     .stream().findAny().orElseThrow(() -> new IllegalStateException("Swarm service has no tasks"));
                 if (serviceTask.status().containerStatus() != null && serviceTask.status().state().equals("running")) {
                     rContainerBuilder.id(serviceTask.status().containerStatus().containerId());
+                    rContainerBuilder.addRuntimeValue(new RuntimeValue(NodeNameKey.inst, serviceTask.nodeId()), false);
                     return Retrying.SUCCESS;
                 } else if (!STARTING_STATES.contains(serviceTask.status().state())) {
                     slog.warn(proxy, "Docker Swarm container failed: container not running, state reported by docker: " + toJson(serviceTask.status()));

src/main/java/eu/openanalytics/containerproxy/backend/kubernetes/KubernetesBackend.java

@@ -38,6 +38,7 @@
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.ContainerImageKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.ContainerIndexKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.InstanceIdKey;
+import eu.openanalytics.containerproxy.model.runtime.runtimevalues.NodeNameKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.ProxiedAppKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.ProxyIdKey;
 import eu.openanalytics.containerproxy.model.runtime.runtimevalues.RuntimeValue;
@@ -398,6 +399,7 @@ public Proxy startContainer(Authentication user, Container initialContainer, Con
             Pod pod = kubeClient.resource(startedPod).get();
 
             parseKubernetesEvents(spec.getIndex(), pod, proxyStartupLogBuilder);
+            rContainerBuilder.addRuntimeValue(new RuntimeValue(NodeNameKey.inst, pod.getSpec().getNodeName()), false);
 
             Service service;
             Map<Integer, Integer> portBindings = new HashMap<>();

src/main/java/eu/openanalytics/containerproxy/model/runtime/runtimevalues/NodeNameKey.java

@@ -0,0 +1,49 @@
+/*
+ * ContainerProxy
+ *
+ * Copyright (C) 2016-2026 Open Analytics
+ *
+ * ===========================================================================
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the Apache License as published by
+ * The Apache Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * Apache License for more details.
+ *
+ * You should have received a copy of the Apache License
+ * along with this program.  If not, see <http://www.apache.org/licenses/>
+ */
+package eu.openanalytics.containerproxy.model.runtime.runtimevalues;
+
+public class NodeNameKey extends RuntimeValueKey<String> {
+
+    public final static NodeNameKey inst = new NodeNameKey();
+
+    private NodeNameKey() {
+        super("openanalytics.eu/sp-node-name",
+            "SHINYPROXY_NODE_NAME",
+            false,
+            false,
+            false,
+            false, // important: may not be exposed in API for security
+            false,
+            true,
+            String.class);
+    }
+
+    @Override
+    public String deserializeFromString(String value) {
+        return value;
+    }
+
+    @Override
+    public String serializeToString(String value) {
+        return value;
+    }
+
+}

src/main/java/eu/openanalytics/containerproxy/model/runtime/runtimevalues/RuntimeValueKeyRegistry.java

@@ -54,6 +54,7 @@ public class RuntimeValueKeyRegistry {
         addRuntimeValueKey(TargetIdKey.inst);
         addRuntimeValueKey(CacheHeadersModeKey.inst);
         addRuntimeValueKey(LanguageKey.inst);
+        addRuntimeValueKey(NodeNameKey.inst);
     }
 
     public static void addRuntimeValueKey(RuntimeValueKey<?> key) {