src/worker/WorkerAbstract.ts

   1 import fs from 'node:fs';
   2
   3 import { WorkerConstants } from './WorkerConstants';
   4 import type { WorkerData, WorkerOptions } from './WorkerTypes';
   5
   6 export abstract class WorkerAbstract<T extends WorkerData> {
   7   protected readonly workerScript: string;
   8   protected readonly workerOptions: WorkerOptions;
   9   public abstract readonly size: number;
  10   public abstract readonly maxElementsPerWorker: number | undefined;
  11
  12   /**
  13    * `WorkerAbstract` constructor.
  14    *
  15    * @param workerScript -
  16    * @param workerOptions -
  17    */
  18   constructor(
  19     workerScript: string,
  20     workerOptions: WorkerOptions = {
  21       workerStartDelay: WorkerConstants.DEFAULT_WORKER_START_DELAY,
  22       elementStartDelay: WorkerConstants.DEFAULT_ELEMENT_START_DELAY,
  23       poolMinSize: WorkerConstants.DEFAULT_POOL_MIN_SIZE,
  24       poolMaxSize: WorkerConstants.DEFAULT_POOL_MAX_SIZE,
  25       elementsPerWorker: WorkerConstants.DEFAULT_ELEMENTS_PER_WORKER,
  26       poolOptions: WorkerConstants.EMPTY_OBJECT,
  27       messageHandler: WorkerConstants.EMPTY_FUNCTION,
  28     }
  29   ) {
  30     if (!workerScript) {
  31       throw new Error('Worker script is not defined');
  32     }
  33     if (!fs.existsSync(workerScript)) {
  34       throw new Error('Worker script file does not exist');
  35     }
  36     this.workerScript = workerScript;
  37     this.workerOptions = workerOptions;
  38   }
  39
  40   public abstract start(): Promise<void>;
  41   public abstract stop(): Promise<void>;
  42   public abstract addElement(elementData: T): Promise<void>;
  43 }