inspector: supported NodeRuntime domain in worker

NodeRuntime domain was introduced to give inspector client way to
fetch captured information before Node process is gone. We need
similar capability for work.

With current protocol inspector client can force worker to wait
on start by passing waitForDebuggerOnStart flag to NodeWorker.enable
method. So client has some time to setup environment, e.g. start
profiler. At the same time there is no way to prevent worker from
being terminated. So we can start capturing profile but we can not
reliably get captured data back.

This PR implemented NodeRuntime.notifyWhenWaitingForDisconnect
method for worker. When NodeRuntime.waitingForDisconnect notification
is enabled, worker will wait for explicit NodeWorker.detach call.

With this PR worker tooling story is nicely aligned with main thread
tooling story. The only difference is that main thread by default is
waiting for disconnect but worker thread is not waiting.

Issue: https://github.com/nodejs/node/issues/27677

PR-URL: https://github.com/nodejs/node/pull/27706
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/test/parallel/test-worker-debug.js b/test/parallel/test-worker-debug.js
index 8726d2a031..4906f623e8 100644
--- a/test/parallel/test-worker-debug.js
+++ b/test/parallel/test-worker-debug.js
@@ -206,6 +206,52 @@ async function testTwoWorkers(session, post) {
   await Promise.all([worker1Exited, worker2Exited]);
 }
 
+async function testWaitForDisconnectInWorker(session, post) {
+  console.log('Test NodeRuntime.waitForDisconnect in worker');
+
+  const sessionWithoutWaiting = new Session();
+  sessionWithoutWaiting.connect();
+  const sessionWithoutWaitingPost = doPost.bind(null, sessionWithoutWaiting);
+
+  await sessionWithoutWaitingPost('NodeWorker.enable', {
+    waitForDebuggerOnStart: true
+  });
+  await post('NodeWorker.enable', { waitForDebuggerOnStart: true });
+
+  const attached = [
+    waitForWorkerAttach(session),
+    waitForWorkerAttach(sessionWithoutWaiting)
+  ];
+
+  let worker = null;
+  const exitPromise = runWorker(2, (w) => worker = w);
+
+  const [{ sessionId: sessionId1 }, { sessionId: sessionId2 }] =
+      await Promise.all(attached);
+
+  const workerSession1 = new WorkerSession(session, sessionId1);
+  const workerSession2 = new WorkerSession(sessionWithoutWaiting, sessionId2);
+
+  await workerSession2.post('Runtime.enable');
+  await workerSession1.post('Runtime.enable');
+  await workerSession1.post('NodeRuntime.notifyWhenWaitingForDisconnect', {
+    enabled: true
+  });
+  await workerSession1.post('Runtime.runIfWaitingForDebugger');
+
+  worker.postMessage('resume');
+
+  await waitForEvent(workerSession1, 'NodeRuntime.waitingForDisconnect');
+  post('NodeWorker.detach', { sessionId: sessionId1 });
+  await waitForEvent(workerSession2, 'Runtime.executionContextDestroyed');
+
+  await exitPromise;
+
+  await post('NodeWorker.disable');
+  await sessionWithoutWaitingPost('NodeWorker.disable');
+  sessionWithoutWaiting.disconnect();
+}
+
 async function test() {
   const session = new Session();
   session.connect();
@@ -219,6 +265,7 @@ async function test() {
 
   await testNoWaitOnStart(session, post);
   await testTwoWorkers(session, post);
+  await testWaitForDisconnectInWorker(session, post);
 
   session.disconnect();
   console.log('Test done');