-import { DynamicThreadPool, PoolOptions } from 'poolifier';
+import type { EventEmitterAsyncResource } from 'node:events'
-import Utils from '../utils/Utils';
-import { Worker } from 'worker_threads';
-import WorkerAbstract from './WorkerAbstract';
-import { WorkerData } from '../types/Worker';
-import { WorkerUtils } from './WorkerUtils';
+import { DynamicThreadPool, type PoolInfo } from 'poolifier'
-export default class WorkerDynamicPool<T> extends WorkerAbstract {
- private pool: DynamicPool;
+import { WorkerAbstract } from './WorkerAbstract.js'
+import type { WorkerData, WorkerOptions } from './WorkerTypes.js'
+import { randomizeDelay, sleep } from './WorkerUtils.js'
+
+export class WorkerDynamicPool extends WorkerAbstract<WorkerData> {
+ private readonly pool: DynamicThreadPool<WorkerData>
/**
- * Create a new `WorkerDynamicPool`.
+ * Creates a new `WorkerDynamicPool`.
*
- * @param {string} workerScript
- * @param {number} min
- * @param {number} max
- * @param {number} workerStartDelay
- * @param {PoolOptions} opts
+ * @param workerScript -
+ * @param workerOptions -
*/
- constructor(workerScript: string, min: number, max: number, workerStartDelay?: number, opts?: PoolOptions<Worker>) {
- super(workerScript, workerStartDelay);
- this.pool = DynamicPool.getInstance(min, max, this.workerScript, opts);
+ constructor (workerScript: string, workerOptions: WorkerOptions) {
+ super(workerScript, workerOptions)
+ this.pool = new DynamicThreadPool<WorkerData>(
+ this.workerOptions.poolMinSize,
+ this.workerOptions.poolMaxSize,
+ this.workerScript,
+ this.workerOptions.poolOptions
+ )
}
- get size(): number {
- return this.pool.workers.length;
+ get info (): PoolInfo {
+ return this.pool.info
}
- get maxElementsPerWorker(): number | null {
- return null;
+ get size (): number {
+ return this.pool.info.workerNodes
}
- /**
- *
- * @returns {Promise<void>}
- * @public
- */
- // eslint-disable-next-line @typescript-eslint/no-empty-function
- public async start(): Promise<void> { }
-
- /**
- *
- * @returns {Promise<void>}
- * @public
- */
- // eslint-disable-next-line @typescript-eslint/require-await
- public async stop(): Promise<void> {
- return this.pool.destroy();
+ get maxElementsPerWorker (): number | undefined {
+ return undefined
}
- /**
- *
- * @param {T} elementData
- * @returns {Promise<void>}
- * @public
- */
- public async addElement(elementData: T): Promise<void> {
- await this.pool.execute(elementData);
- // Start worker sequentially to optimize memory at startup
- await Utils.sleep(this.workerStartDelay);
+ get emitter (): EventEmitterAsyncResource | undefined {
+ return this.pool.emitter
}
-}
-class DynamicPool extends DynamicThreadPool<WorkerData> {
- private static instance: DynamicPool;
+ /** @inheritDoc */
+ public async start (): Promise<void> {
+ // This is intentional
+ }
- private constructor(min: number, max: number, workerScript: string, opts?: PoolOptions<Worker>) {
- super(min, max, workerScript, opts);
+ /** @inheritDoc */
+ public async stop (): Promise<void> {
+ await this.pool.destroy()
}
- public static getInstance(min: number, max: number, workerScript: string, opts?: PoolOptions<Worker>): DynamicPool {
- if (!DynamicPool.instance) {
- opts.exitHandler = opts?.exitHandler ?? WorkerUtils.defaultExitHandler;
- DynamicPool.instance = new DynamicPool(min, max, workerScript, opts);
- }
- return DynamicPool.instance;
+ /** @inheritDoc */
+ public async addElement (elementData: WorkerData): Promise<void> {
+ await this.pool.execute(elementData)
+ // Start element sequentially to optimize memory at startup
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ this.workerOptions.elementStartDelay! > 0 &&
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ (await sleep(randomizeDelay(this.workerOptions.elementStartDelay!)))
}
}