| 1 | import { isMainThread } from 'node:worker_threads'; |
| 2 | |
| 3 | import type { WorkerAbstract } from './WorkerAbstract'; |
| 4 | import { DEFAULT_WORKER_OPTIONS } from './WorkerConstants'; |
| 5 | import { WorkerDynamicPool } from './WorkerDynamicPool'; |
| 6 | import { WorkerFixedPool } from './WorkerFixedPool'; |
| 7 | import { WorkerSet } from './WorkerSet'; |
| 8 | import { type WorkerData, type WorkerOptions, WorkerProcessType } from './WorkerTypes'; |
| 9 | |
| 10 | export class WorkerFactory { |
| 11 | private constructor() { |
| 12 | // This is intentional |
| 13 | } |
| 14 | |
| 15 | public static getWorkerImplementation<T extends WorkerData>( |
| 16 | workerScript: string, |
| 17 | workerProcessType: WorkerProcessType, |
| 18 | workerOptions?: WorkerOptions, |
| 19 | ): WorkerAbstract<T> | undefined { |
| 20 | if (!isMainThread) { |
| 21 | throw new Error('Cannot get a worker implementation outside the main thread'); |
| 22 | } |
| 23 | workerOptions = { ...DEFAULT_WORKER_OPTIONS, ...workerOptions }; |
| 24 | let workerImplementation: WorkerAbstract<T>; |
| 25 | switch (workerProcessType) { |
| 26 | case WorkerProcessType.workerSet: |
| 27 | workerImplementation = new WorkerSet(workerScript, workerOptions); |
| 28 | break; |
| 29 | case WorkerProcessType.fixedPool: |
| 30 | workerImplementation = new WorkerFixedPool(workerScript, workerOptions); |
| 31 | break; |
| 32 | case WorkerProcessType.dynamicPool: |
| 33 | workerImplementation = new WorkerDynamicPool(workerScript, workerOptions); |
| 34 | break; |
| 35 | default: |
| 36 | // eslint-disable-next-line @typescript-eslint/restrict-template-expressions |
| 37 | throw new Error(`Worker implementation type '${workerProcessType}' not found`); |
| 38 | } |
| 39 | return workerImplementation; |
| 40 | } |
| 41 | } |