import { FixedThreadPool, PoolOptions } from 'poolifier';
-import Constants from '../utils/Constants';
import Utils from '../utils/Utils';
import { Worker } from 'worker_threads';
import WorkerAbstract from './WorkerAbstract';
import { WorkerData } from '../types/Worker';
+import { WorkerUtils } from './WorkerUtils';
export default class WorkerStaticPool<T> extends WorkerAbstract {
- private pool: StaticPool;
+ private readonly pool: FixedThreadPool<WorkerData>;
/**
* Create a new `WorkerStaticPool`.
*
- * @param {string} workerScript
+ * @param workerScript
+ * @param numberOfThreads
+ * @param startWorkerDelay
+ * @param opts
*/
- constructor(workerScript: string, numberOfThreads: number) {
- super(workerScript);
- this.pool = StaticPool.getInstance(numberOfThreads, this.workerScript);
+ constructor(workerScript: string, numberOfThreads: number, startWorkerDelay?: number, opts?: PoolOptions<Worker>) {
+ super(workerScript, startWorkerDelay);
+ opts.exitHandler = opts?.exitHandler ?? WorkerUtils.defaultExitHandler;
+ this.pool = new FixedThreadPool(numberOfThreads, this.workerScript, opts);
}
get size(): number {
return this.pool.workers.length;
}
- get maxElementsPerWorker(): number {
+ get maxElementsPerWorker(): number | null {
return null;
}
/**
*
- * @return {Promise<void>}
+ * @returns
* @public
*/
- // eslint-disable-next-line @typescript-eslint/no-empty-function
- public async start(): Promise<void> { }
+ public async start(): Promise<void> {
+ // This is intentional
+ }
/**
*
- * @return {Promise<void>}
+ * @returns
* @public
*/
public async stop(): Promise<void> {
/**
*
- * @return {Promise<void>}
+ * @param elementData
+ * @returns
* @public
*/
public async addElement(elementData: T): Promise<void> {
await this.pool.execute(elementData);
// Start worker sequentially to optimize memory at startup
- await Utils.sleep(Constants.START_WORKER_DELAY);
- }
-}
-
-class StaticPool extends FixedThreadPool<WorkerData> {
- private static instance: StaticPool;
-
- private constructor(numberOfThreads: number, workerScript: string, opts?: PoolOptions<Worker>) {
- super(numberOfThreads, workerScript, opts);
- }
-
- public static getInstance(numberOfThreads: number, workerScript: string): StaticPool {
- if (!StaticPool.instance) {
- StaticPool.instance = new StaticPool(numberOfThreads, workerScript,
- {
- exitHandler: (code) => {
- if (code !== 0) {
- console.error(`Worker stopped with exit code ${code}`);
- }
- }
- }
- );
- }
- return StaticPool.instance;
+ await Utils.sleep(this.workerStartDelay);
}
}