build: cleanup eslint configuration

[e-mobility-charging-stations-simulator.git] / src / worker / WorkerSet.ts

diff --git a/src/worker/WorkerSet.ts b/src/worker/WorkerSet.ts
index 7f140527d365bf12dd5b985e3d8c2c583a10de3f..17b5b6dde201c85f4c0af0cbaf3574d33968fb03 100644 (file)
--- a/src/worker/WorkerSet.ts
+++ b/src/worker/WorkerSet.ts
@@ -1,6 +1,6 @@
 // Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
 
-import { EventEmitter } from 'node:events';
+import { EventEmitterAsyncResource } from 'node:events';
 import { SHARE_ENV, Worker } from 'node:worker_threads';
 
 import { WorkerAbstract } from './WorkerAbstract';
@@ -17,7 +17,7 @@ import {
 import { randomizeDelay, sleep } from './WorkerUtils';
 
 export class WorkerSet extends WorkerAbstract<WorkerData> {
-  public readonly emitter!: EventEmitter;
+  public readonly emitter: EventEmitterAsyncResource | undefined;
   private readonly workerSet: Set<WorkerSetElement>;
   private started: boolean;
   private workerStartup: boolean;
@@ -44,7 +44,7 @@ export class WorkerSet extends WorkerAbstract<WorkerData> {
     }
     this.workerSet = new Set<WorkerSetElement>();
     if (this.workerOptions.poolOptions?.enableEvents) {
-      this.emitter = new EventEmitter();
+      this.emitter = new EventEmitterAsyncResource({ name: 'workerset' });
     }
     this.started = false;
     this.workerStartup = false;
@@ -78,6 +78,7 @@ export class WorkerSet extends WorkerAbstract<WorkerData> {
     // Add worker set element sequentially to optimize memory at startup
     this.workerOptions.workerStartDelay! > 0 &&
       (await sleep(randomizeDelay(this.workerOptions.workerStartDelay!)));
+    this.emitter?.emit(WorkerSetEvents.started, this.info);
     this.started = true;
   }
 
@@ -92,6 +93,9 @@ export class WorkerSet extends WorkerAbstract<WorkerData> {
       });
       await worker.terminate();
       await waitWorkerExit;
+      this.emitter?.emit(WorkerSetEvents.stopped, this.info);
+      this.emitter?.emitDestroy();
+      this.emitter?.removeAllListeners();
       this.started = false;
     }
   }
@@ -101,7 +105,7 @@ export class WorkerSet extends WorkerAbstract<WorkerData> {
     if (!this.started) {
       throw new Error('Cannot add a WorkerSet element: not started');
     }
-    if (!this.workerSet) {
+    if (this.workerSet == null) {
       throw new Error("Cannot add a WorkerSet element: 'workerSet' property does not exist");
     }
     const workerSetElement = await this.getWorkerSetElement();