-import { WorkerData, WorkerStartOptions } from '../types/Worker';
+import type { EventEmitter } from 'node:events';
+import { existsSync } from 'node:fs';
-import Constants from '../utils/Constants';
+import type { PoolEmitter, PoolInfo } from 'poolifier';
-export default abstract class WorkerAbstract<T extends WorkerData> {
+import type { SetInfo, WorkerData, WorkerOptions } from './WorkerTypes';
+import { defaultErrorHandler, defaultExitHandler } from './WorkerUtils';
+
+export abstract class WorkerAbstract<T extends WorkerData> {
protected readonly workerScript: string;
- protected readonly workerStartDelay: number;
- protected readonly elementStartDelay: number;
+ protected readonly workerOptions: WorkerOptions;
+ public abstract readonly info: PoolInfo | SetInfo;
public abstract readonly size: number;
- public abstract readonly maxElementsPerWorker: number | null;
+ public abstract readonly maxElementsPerWorker: number | undefined;
+ public abstract readonly emitter: EventEmitter | PoolEmitter | undefined;
/**
* `WorkerAbstract` constructor.
*
- * @param workerScript
- * @param workerStartOptions
+ * @param workerScript -
+ * @param workerOptions -
*/
- constructor(workerScript: string, workerStartOptions: WorkerStartOptions = {
- workerStartDelay: Constants.WORKER_START_DELAY,
- elementStartDelay: Constants.ELEMENT_START_DELAY
- }) {
+ constructor(workerScript: string, workerOptions: WorkerOptions) {
+ if (workerScript === null || workerScript === undefined) {
+ throw new Error('Worker script is not defined');
+ }
+ if (typeof workerScript === 'string' && workerScript.trim().length === 0) {
+ throw new Error('Worker script is empty');
+ }
+ if (!existsSync(workerScript)) {
+ throw new Error('Worker script file does not exist');
+ }
this.workerScript = workerScript;
- this.workerStartDelay = workerStartOptions.workerStartDelay;
- this.elementStartDelay = workerStartOptions.elementStartDelay;
+ this.workerOptions = workerOptions;
+ this.workerOptions.poolOptions!.errorHandler =
+ this.workerOptions.poolOptions?.errorHandler ?? defaultErrorHandler;
+ this.workerOptions.poolOptions!.exitHandler =
+ this.workerOptions.poolOptions?.exitHandler ?? defaultExitHandler;
}
+ /**
+ * Starts the worker pool/set.
+ */
public abstract start(): Promise<void>;
+ /**
+ * Stops the worker pool/set.
+ */
public abstract stop(): Promise<void>;
+ /**
+ * Adds a task element to the worker pool/set.
+ *
+ * @param elementData -
+ */
public abstract addElement(elementData: T): Promise<void>;
}