-import Configuration from '../utils/Configuration';
-import WorkerPool from './WorkerPool';
+import { Worker, isMainThread } from 'worker_threads';
+import { WorkerOptions, WorkerProcessType } from '../types/Worker';
+
+import Constants from '../utils/Constants';
+import { PoolOptions } from 'poolifier';
+import WorkerAbstract from './WorkerAbstract';
+import WorkerDynamicPool from './WorkerDynamicPool';
import WorkerSet from './WorkerSet';
-import Wrk from './Wrk';
+import WorkerStaticPool from './WorkerStaticPool';
export default class WorkerFactory {
- public static getWorkerImpl(workerScript: string): Wrk {
- if (Configuration.useWorkerPool()) {
- return new WorkerPool(workerScript);
+ private constructor() {
+ // This is intentional
+ }
+
+ public static getWorkerImplementation<T>(workerScript: string, workerProcessType: WorkerProcessType, options?: WorkerOptions): WorkerAbstract | null {
+ if (!isMainThread) {
+ throw new Error('Trying to get a worker implementation outside the main thread');
+ }
+ options = options ?? {} as WorkerOptions;
+ options.startDelay = options?.startDelay ?? Constants.WORKER_START_DELAY;
+ options.poolOptions = options?.poolOptions ?? {} as PoolOptions<Worker>;
+ options?.messageHandler && (options.poolOptions.messageHandler = options.messageHandler);
+ let workerImplementation: WorkerAbstract = null;
+ switch (workerProcessType) {
+ case WorkerProcessType.WORKER_SET:
+ options.elementsPerWorker = options.elementsPerWorker ?? Constants.DEFAULT_CHARGING_STATIONS_PER_WORKER;
+ workerImplementation = new WorkerSet<T>(workerScript, options.elementsPerWorker, options.startDelay, options);
+ break;
+ case WorkerProcessType.STATIC_POOL:
+ options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
+ workerImplementation = new WorkerStaticPool<T>(workerScript, options.poolMaxSize, options.startDelay, options.poolOptions);
+ break;
+ case WorkerProcessType.DYNAMIC_POOL:
+ options.poolMinSize = options.poolMinSize ?? Constants.DEFAULT_WORKER_POOL_MIN_SIZE;
+ options.poolMaxSize = options.poolMaxSize ?? Constants.DEFAULT_WORKER_POOL_MAX_SIZE;
+ workerImplementation = new WorkerDynamicPool<T>(workerScript, options.poolMinSize, options.poolMaxSize, options.startDelay, options.poolOptions);
+ break;
+ default:
+ throw new Error(`Worker implementation type '${workerProcessType}' not found`);
}
- return new WorkerSet(workerScript, Configuration.getChargingStationsPerWorker());
+ return workerImplementation;
}
}