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   public static getWorkerImplementation<T>(workerScript: string, workerProcessType: WorkerProcessType, options?: WorkerOptions): WorkerAbstract | null {
  12     if (!isMainThread) {
  13       throw new Error('Trying to get a worker implementation outside the main thread');
  14     }
  15     options = options ?? {} as WorkerOptions;
  16     options.startDelay = options.startDelay ?? Constants.WORKER_START_DELAY;
  17     switch (workerProcessType) {
  18       case WorkerProcessType.WORKER_SET:
  19         options.elementsPerWorker = options.elementsPerWorker ?? Constants.DEFAULT_CHARGING_STATIONS_PER_WORKER;
  20         return new WorkerSet<T>(workerScript, options.elementsPerWorker, options.startDelay);
  21       case WorkerProcessType.STATIC_POOL:
  22         options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
  23         return new WorkerStaticPool<T>(workerScript, options.poolMaxSize, options.startDelay, options.poolOptions);
  24       case WorkerProcessType.DYNAMIC_POOL:
  25         options.poolMinSize = options.poolMinSize ?? Constants.DEFAULT_WORKER_POOL_MIN_SIZE;
  26         options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
  27         return new WorkerDynamicPool<T>(workerScript, options.poolMinSize, options.poolMaxSize, options.startDelay, options.poolOptions);
  28       default:
  29         return null;
  30     }
  31   }
  32 }