// Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
-import { WorkerEvents, WorkerSetElement } from '../types/Worker';
+import { WorkerMessageEvents, WorkerOptions, WorkerSetElement } from '../types/Worker';
import Utils from '../utils/Utils';
import { Worker } from 'worker_threads';
import { WorkerUtils } from './WorkerUtils';
export default class WorkerSet<T> extends WorkerAbstract {
- public maxElementsPerWorker: number;
+ public readonly maxElementsPerWorker: number;
+ private readonly messageHandler: (message: unknown) => void | Promise<void>;
private workerSet: Set<WorkerSetElement>;
/**
* @param workerScript
* @param maxElementsPerWorker
* @param workerStartDelay
- * @param messageListenerCallback
+ * @param opts
*/
- constructor(workerScript: string, maxElementsPerWorker = 1, workerStartDelay?: number, messageListenerCallback: (message: any) => void = () => { /* This is intentional */ }) {
- super(workerScript, workerStartDelay, messageListenerCallback);
- this.workerSet = new Set<WorkerSetElement>();
+ constructor(workerScript: string, maxElementsPerWorker = 1, workerStartDelay?: number, opts?: WorkerOptions) {
+ super(workerScript, workerStartDelay);
this.maxElementsPerWorker = maxElementsPerWorker;
+ this.messageHandler = opts?.messageHandler ?? (() => { });
+ this.workerSet = new Set<WorkerSetElement>();
}
get size(): number {
// Start worker sequentially to optimize memory at startup
await Utils.sleep(this.workerStartDelay);
}
- this.getLastWorker().postMessage({ id: WorkerEvents.START_WORKER_ELEMENT, data: elementData });
+ this.getLastWorker().postMessage({ id: WorkerMessageEvents.START_WORKER_ELEMENT, data: elementData });
this.getLastWorkerSetElement().numberOfWorkerElements++;
}
*/
private startWorker(): void {
const worker = new Worker(this.workerScript);
- worker.on('message', this.messageListener);
+ worker.on('message', (msg) => {
+ (async () => {
+ await this.messageHandler(msg);
+ })().catch(() => {});
+ });
worker.on('error', () => { /* This is intentional */ });
worker.on('exit', (code) => {
WorkerUtils.defaultExitHandler(code);