-// Partial Copyright Jerome Benoit. 2021. All Rights Reserved.
+// Partial Copyright Jerome Benoit. 2021-2023. All Rights Reserved.
-import { Worker } from 'worker_threads';
+import { Worker } from 'node:worker_threads';
-import { WorkerData, WorkerMessageEvents, WorkerOptions, WorkerSetElement } from '../types/Worker';
-import Utils from '../utils/Utils';
-import WorkerAbstract from './WorkerAbstract';
+import { WorkerAbstract } from './WorkerAbstract';
+import { WorkerConstants } from './WorkerConstants';
+import {
+ type MessageHandler,
+ type WorkerData,
+ WorkerMessageEvents,
+ type WorkerOptions,
+ type WorkerSetElement,
+} from './WorkerTypes';
import { WorkerUtils } from './WorkerUtils';
-export default class WorkerSet extends WorkerAbstract<WorkerData> {
+export class WorkerSet extends WorkerAbstract<WorkerData> {
private readonly workerSet: Set<WorkerSetElement>;
- private readonly messageHandler: (message: unknown) => void | Promise<void>;
/**
* Create a new `WorkerSet`.
*
- * @param workerScript
- * @param workerOptions
+ * @param workerScript -
+ * @param workerOptions -
*/
constructor(workerScript: string, workerOptions?: WorkerOptions) {
super(workerScript, workerOptions);
this.workerSet = new Set<WorkerSetElement>();
- this.messageHandler =
- workerOptions?.messageHandler ??
- (() => {
- /* This is intentional */
- });
}
get size(): number {
return this.workerSet.size;
}
- get maxElementsPerWorker(): number | null {
+ get maxElementsPerWorker(): number | undefined {
return this.workerOptions.elementsPerWorker;
}
/**
*
- * @param elementData
+ * @param elementData -
* @returns
* @public
*/
await this.startWorker();
}
this.getLastWorker().postMessage({
- id: WorkerMessageEvents.START_WORKER_ELEMENT,
+ id: WorkerMessageEvents.startWorkerElement,
data: elementData,
});
this.getLastWorkerSetElement().numberOfWorkerElements++;
// Start element sequentially to optimize memory at startup
if (this.workerOptions.elementStartDelay > 0) {
- await Utils.sleep(this.workerOptions.elementStartDelay);
+ await WorkerUtils.sleep(this.workerOptions.elementStartDelay);
}
}
}
/**
- *
- * @private
+ * Start a new `Worker`.
*/
private async startWorker(): Promise<void> {
const worker = new Worker(this.workerScript);
- worker.on('message', (msg) => {
- (async () => {
- await this.messageHandler(msg);
- })().catch(() => {
- /* This is intentional */
- });
- });
- worker.on('error', () => {
- /* This is intentional */
- });
+ worker.on(
+ 'message',
+ (this.workerOptions?.messageHandler ?? WorkerConstants.EMPTY_FUNCTION).bind(
+ this
+ ) as MessageHandler<Worker>
+ );
+ worker.on('error', WorkerUtils.defaultErrorHandler.bind(this) as (err: Error) => void);
worker.on('exit', (code) => {
WorkerUtils.defaultExitHandler(code);
this.workerSet.delete(this.getWorkerSetElementByWorker(worker));
this.workerSet.add({ worker, numberOfWorkerElements: 0 });
// Start worker sequentially to optimize memory at startup
this.workerOptions.workerStartDelay > 0 &&
- (await Utils.sleep(this.workerOptions.workerStartDelay));
+ (await WorkerUtils.sleep(this.workerOptions.workerStartDelay));
}
private getLastWorkerSetElement(): WorkerSetElement {