test

Author: hmottestad

.github/actions/thread-dump-post/action.yml

@@ -0,0 +1,7 @@
+name: Thread dump on cancellation
+description: Capture JVM thread dumps after a job is cancelled.
+runs:
+  using: node20
+  main: main.js
+  post: post.js
+  post-if: cancelled()

.github/actions/thread-dump-post/main.js

@@ -0,0 +1 @@
+console.log("Thread dump post-step registered.");

.github/actions/thread-dump-post/post.js

@@ -0,0 +1,40 @@
+const { execSync } = require("child_process");
+
+function run(command) {
+  execSync(command, { stdio: "inherit", shell: "/bin/bash" });
+}
+
+function dumpThreads() {
+  run('echo "== Cancellation detected: capturing JVM thread dumps =="');
+  run(
+    [
+      "set -euo pipefail",
+      "pids=$(pgrep -f '[j]ava' || true)",
+      'if [[ -z "${pids}" ]]; then echo "No Java processes found."; exit 0; fi',
+      "if command -v jcmd >/dev/null 2>&1; then",
+      "  for pid in ${pids}; do",
+      '    echo "-- jcmd Thread.print for PID ${pid} --"',
+      "    jcmd \"${pid}\" Thread.print || true",
+      "  done",
+      "  exit 0",
+      "fi",
+      "if command -v jstack >/dev/null 2>&1; then",
+      "  for pid in ${pids}; do",
+      '    echo "-- jstack for PID ${pid} --"',
+      "    jstack \"${pid}\" || true",
+      "  done",
+      "  exit 0",
+      "fi",
+      "for pid in ${pids}; do",
+      '  echo "-- kill -QUIT ${pid} (no jcmd/jstack available) --"',
+      "  kill -QUIT \"${pid}\" || true",
+      "done",
+    ].join("\n")
+  );
+}
+
+try {
+  dumpThreads();
+} catch (error) {
+  console.error("Thread dump post-step failed:", error);
+}

.github/workflows/pr-verify.yml

@@ -16,6 +16,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -34,6 +36,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -53,6 +57,8 @@ jobs:
         jdk: [ 11, 25 ]
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -75,6 +81,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -96,6 +104,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -117,6 +127,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -134,6 +146,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
@@ -154,5 +168,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Register JVM thread dump on cancel
+        uses: ./.github/actions/thread-dump-post
       - name: check copyright header present
         run: scripts/checkCopyrightPresent.sh