} from './WorkerTypes.js'
import { randomizeDelay, sleep } from './WorkerUtils.js'
-export class WorkerSet extends WorkerAbstract<WorkerData> {
+export class WorkerSet<D extends WorkerData, R extends WorkerData> extends WorkerAbstract<D, R> {
public readonly emitter: EventEmitterAsyncResource | undefined
private readonly workerSet: Set<WorkerSetElement>
private started: boolean
if (!Number.isSafeInteger(this.workerOptions.elementsPerWorker)) {
throw new TypeError('Elements per worker must be an integer')
}
- if (
- typeof this.workerOptions.elementsPerWorker === 'number' &&
- this.workerOptions.elementsPerWorker <= 0
- ) {
+ if (this.workerOptions.elementsPerWorker <= 0) {
throw new RangeError('Elements per worker must be greater than zero')
}
this.workerSet = new Set<WorkerSetElement>()
}
/** @inheritDoc */
- public async addElement (elementData: WorkerData): Promise<void> {
+ public async addElement (elementData: D): Promise<R> {
if (!this.started) {
throw new Error('Cannot add a WorkerSet element: not started')
}
const workerSetElement = await this.getWorkerSetElement()
+ const waitForAddedWorkerElement = new Promise<R>((resolve, reject) => {
+ const messageHandler = (message: WorkerMessage<R>): void => {
+ if (message.event === WorkerMessageEvents.addedWorkerElement) {
+ ++workerSetElement.numberOfWorkerElements
+ resolve(message.data)
+ workerSetElement.worker.off('message', messageHandler)
+ } else if (message.event === WorkerMessageEvents.workerElementError) {
+ // eslint-disable-next-line @typescript-eslint/prefer-promise-reject-errors
+ reject(message.data)
+ workerSetElement.worker.off('message', messageHandler)
+ }
+ }
+ workerSetElement.worker.on('message', messageHandler)
+ })
workerSetElement.worker.postMessage({
event: WorkerMessageEvents.addWorkerElement,
data: elementData
})
- ++workerSetElement.numberOfWorkerElements
+ const response = await waitForAddedWorkerElement
// Add element sequentially to optimize memory at startup
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
if (this.workerOptions.elementAddDelay! > 0) {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
await sleep(randomizeDelay(this.workerOptions.elementAddDelay!))
}
+ return response
}
/**
...this.workerOptions.poolOptions?.workerOptions
})
worker.on('message', this.workerOptions.poolOptions?.messageHandler ?? EMPTY_FUNCTION)
- worker.on('message', (message: WorkerMessage<WorkerData>) => {
+ worker.on('message', (message: WorkerMessage<R>) => {
if (message.event === WorkerMessageEvents.addedWorkerElement) {
this.emitter?.emit(WorkerSetEvents.elementAdded, this.info)
} else if (message.event === WorkerMessageEvents.workerElementError) {