src/worker/WorkerFactory.ts

   1 import { WorkerOptions, WorkerProcessType } from '../types/Worker';
   2
   3 import Constants from '../utils/Constants';
   4 import WorkerAbstract from './WorkerAbstract';
   5 import WorkerDynamicPool from './WorkerDynamicPool';
   6 import WorkerSet from './WorkerSet';
   7 import WorkerStaticPool from './WorkerStaticPool';
   8 import { isMainThread } from 'worker_threads';
   9
  10 export default class WorkerFactory {
  11   // eslint-disable-next-line @typescript-eslint/no-empty-function
  12   private constructor() {}
  13
  14   public static getWorkerImplementation<T>(workerScript: string, workerProcessType: WorkerProcessType, options?: WorkerOptions): WorkerAbstract | null {
  15     if (!isMainThread) {
  16       throw new Error('Trying to get a worker implementation outside the main thread');
  17     }
  18     options = options ?? {} as WorkerOptions;
  19     options.startDelay = options.startDelay ?? Constants.WORKER_START_DELAY;
  20     let workerImplementation: WorkerAbstract = null;
  21     switch (workerProcessType) {
  22       case WorkerProcessType.WORKER_SET:
  23         options.elementsPerWorker = options.elementsPerWorker ?? Constants.DEFAULT_CHARGING_STATIONS_PER_WORKER;
  24         workerImplementation = new WorkerSet<T>(workerScript, options.elementsPerWorker, options.startDelay);
  25         break;
  26       case WorkerProcessType.STATIC_POOL:
  27         options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
  28         workerImplementation = new WorkerStaticPool<T>(workerScript, options.poolMaxSize, options.startDelay, options.poolOptions);
  29         break;
  30       case WorkerProcessType.DYNAMIC_POOL:
  31         options.poolMinSize = options.poolMinSize ?? Constants.DEFAULT_WORKER_POOL_MIN_SIZE;
  32         options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
  33         workerImplementation = new WorkerDynamicPool<T>(workerScript, options.poolMinSize, options.poolMaxSize, options.startDelay, options.poolOptions);
  34         break;
  35     }
  36     return workerImplementation;
  37   }
  38 }