Display worker process mode at startup.

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

diff --git a/src/worker/WorkerSet.ts b/src/worker/WorkerSet.ts
index a8aa8a37cf5820a5097689ef36b7d58ae59f9ed6..2151eff9ceb51db91d6662957694f09b1c81c921 100644 (file)
--- a/src/worker/WorkerSet.ts
+++ b/src/worker/WorkerSet.ts
@@ -1,13 +1,13 @@
+import { Worker, threadId } from 'worker_threads';
+import { WorkerData, WorkerEvents, WorkerSetElement } from '../types/Worker';
+
 import Constants from '../utils/Constants';
 import Utils from '../utils/Utils';
-import { Worker } from 'worker_threads';
-import WorkerData from '../types/WorkerData';
-import Wrk from './Worker';
+import Wrk from './Wrk';
 
 export default class WorkerSet extends Wrk {
   public maxElementsPerWorker: number;
-  private workers: Set<Worker>;
-  private lastWorkerNumberOfElements: number;
+  private workers: Set<WorkerSetElement>;
 
   /**
    * Create a new `WorkerSet`.
@@ -17,9 +17,8 @@ export default class WorkerSet extends Wrk {
    */
   constructor(workerScript: string, maxElementsPerWorker = 1) {
     super(workerScript);
-    this.workers = new Set<Worker>();
+    this.workers = new Set<WorkerSetElement>();
     this.maxElementsPerWorker = maxElementsPerWorker;
-    this.lastWorkerNumberOfElements = 0;
   }
 
   get size(): number {
@@ -33,16 +32,15 @@ export default class WorkerSet extends Wrk {
    */
   public async addElement(elementData: WorkerData): Promise<void> {
     if (!this.workers) {
-      throw Error('Cannot add a WorkerSet element: workers set does not exist');
+      throw Error('Cannot add a WorkerSet element: workers\' set does not exist');
     }
-    if (this.lastWorkerNumberOfElements >= this.maxElementsPerWorker) {
-      void this.startWorker();
-      this.lastWorkerNumberOfElements = 0;
+    if (this.getLastWorkerSetElement().numberOfWorkerElements >= this.maxElementsPerWorker) {
+      this.startWorker();
       // Start worker sequentially to optimize memory at startup
-      void Utils.sleep(Constants.START_WORKER_DELAY);
+      await Utils.sleep(Constants.START_WORKER_DELAY);
     }
-    this.getLastWorker().postMessage({ id: Constants.START_WORKER_ELEMENT, workerData: elementData });
-    this.lastWorkerNumberOfElements++;
+    this.getLastWorker().postMessage({ id: WorkerEvents.START_WORKER_ELEMENT, workerData: elementData });
+    this.getLastWorkerSetElement().numberOfWorkerElements++;
   }
 
   /**
@@ -51,7 +49,7 @@ export default class WorkerSet extends Wrk {
    * @public
    */
   public async start(): Promise<void> {
-    await this.startWorker();
+    this.startWorker();
     // Start worker sequentially to optimize memory at startup
     await Utils.sleep(Constants.START_WORKER_DELAY);
   }
@@ -61,24 +59,26 @@ export default class WorkerSet extends Wrk {
    * @return {Promise}
    * @private
    */
-  private async startWorker() {
-    return new Promise((resolve, reject) => {
-      const worker = new Worker(this.workerScript);
-      worker.on('message', resolve);
-      worker.on('error', reject);
-      worker.on('exit', (code) => {
-        if (code !== 0) {
-          reject(new Error(`Worker stopped with exit code ${code}`));
-        }
-      });
-      this.workers.add(worker);
+  private startWorker(): void {
+    const worker = new Worker(this.workerScript);
+    worker.on('message', () => { });
+    worker.on('error', () => { });
+    worker.on('exit', (code) => {
+      if (code !== 0) {
+        console.error(`Worker ${threadId} stopped with exit code ${code}`);
+      }
     });
+    this.workers.add({ worker, numberOfWorkerElements: 0 });
   }
 
-  private getLastWorker(): Worker {
-    let worker: Worker;
+  private getLastWorkerSetElement(): WorkerSetElement {
+    let workerSetElement: WorkerSetElement;
     // eslint-disable-next-line no-empty
-    for (worker of this.workers) { }
-    return worker;
+    for (workerSetElement of this.workers) { }
+    return workerSetElement;
+  }
+
+  private getLastWorker(): Worker {
+    return this.getLastWorkerSetElement().worker;
   }
 }