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be0676b3 APA |
1 | import type { |
2 | MessageValue, | |
3 | PromiseWorkerResponseWrapper | |
4 | } from '../utility-types' | |
ed6dd37f | 5 | import { EMPTY_FUNCTION } from '../utils' |
34a0cfab | 6 | import { KillBehaviors, isKillBehavior } from '../worker/worker-options' |
bdaf31cd | 7 | import type { PoolOptions } from './pool' |
b4904890 | 8 | import { PoolEmitter } from './pool' |
ffcbbad8 | 9 | import type { IPoolInternal, TasksUsage, WorkerType } from './pool-internal' |
b4904890 | 10 | import { PoolType } from './pool-internal' |
ea7a90d3 | 11 | import type { IPoolWorker } from './pool-worker' |
a35560ba S |
12 | import { |
13 | WorkerChoiceStrategies, | |
63220255 | 14 | type WorkerChoiceStrategy |
bdaf31cd JB |
15 | } from './selection-strategies/selection-strategies-types' |
16 | import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context' | |
c97c7edb | 17 | |
729c563d | 18 | /** |
ea7a90d3 | 19 | * Base class that implements some shared logic for all poolifier pools. |
729c563d | 20 | * |
38e795c1 JB |
21 | * @typeParam Worker - Type of worker which manages this pool. |
22 | * @typeParam Data - Type of data sent to the worker. This can only be serializable data. | |
23 | * @typeParam Response - Type of response of execution. This can only be serializable data. | |
729c563d | 24 | */ |
c97c7edb | 25 | export abstract class AbstractPool< |
ea7a90d3 | 26 | Worker extends IPoolWorker, |
d3c8a1a8 S |
27 | Data = unknown, |
28 | Response = unknown | |
9b2fdd9f | 29 | > implements IPoolInternal<Worker, Data, Response> { |
38e795c1 | 30 | /** {@inheritDoc} */ |
ffcbbad8 JB |
31 | public readonly workers: Map<number, WorkerType<Worker>> = new Map< |
32 | number, | |
33 | WorkerType<Worker> | |
bf9549ae | 34 | >() |
4a6952ff | 35 | |
38e795c1 | 36 | /** {@inheritDoc} */ |
7c0ba920 JB |
37 | public readonly emitter?: PoolEmitter |
38 | ||
ffcbbad8 JB |
39 | /** |
40 | * Id of the next worker. | |
41 | */ | |
42 | protected nextWorkerId: number = 0 | |
43 | ||
be0676b3 APA |
44 | /** |
45 | * The promise map. | |
46 | * | |
ffcbbad8 | 47 | * - `key`: This is the message id of each submitted task. |
be0676b3 APA |
48 | * - `value`: An object that contains the worker, the resolve function and the reject function. |
49 | * | |
50 | * When we receive a message from the worker we get a map entry and resolve/reject the promise based on the message. | |
51 | */ | |
52 | protected promiseMap: Map< | |
78cea37e JB |
53 | number, |
54 | PromiseWorkerResponseWrapper<Worker, Response> | |
be0676b3 APA |
55 | > = new Map<number, PromiseWorkerResponseWrapper<Worker, Response>>() |
56 | ||
729c563d | 57 | /** |
e088a00c | 58 | * Id of the next message. |
729c563d | 59 | */ |
280c2a77 | 60 | protected nextMessageId: number = 0 |
c97c7edb | 61 | |
a35560ba S |
62 | /** |
63 | * Worker choice strategy instance implementing the worker choice algorithm. | |
64 | * | |
65 | * Default to a strategy implementing a round robin algorithm. | |
66 | */ | |
67 | protected workerChoiceStrategyContext: WorkerChoiceStrategyContext< | |
78cea37e JB |
68 | Worker, |
69 | Data, | |
70 | Response | |
a35560ba S |
71 | > |
72 | ||
729c563d S |
73 | /** |
74 | * Constructs a new poolifier pool. | |
75 | * | |
38e795c1 JB |
76 | * @param numberOfWorkers - Number of workers that this pool should manage. |
77 | * @param filePath - Path to the worker-file. | |
78 | * @param opts - Options for the pool. | |
729c563d | 79 | */ |
c97c7edb | 80 | public constructor ( |
5c5a1fb7 | 81 | public readonly numberOfWorkers: number, |
c97c7edb | 82 | public readonly filePath: string, |
1927ee67 | 83 | public readonly opts: PoolOptions<Worker> |
c97c7edb | 84 | ) { |
78cea37e | 85 | if (!this.isMain()) { |
c97c7edb S |
86 | throw new Error('Cannot start a pool from a worker!') |
87 | } | |
8d3782fa | 88 | this.checkNumberOfWorkers(this.numberOfWorkers) |
c510fea7 | 89 | this.checkFilePath(this.filePath) |
7c0ba920 | 90 | this.checkPoolOptions(this.opts) |
c97c7edb S |
91 | this.setupHook() |
92 | ||
5c5a1fb7 | 93 | for (let i = 1; i <= this.numberOfWorkers; i++) { |
280c2a77 | 94 | this.createAndSetupWorker() |
c97c7edb S |
95 | } |
96 | ||
6bd72cd0 | 97 | if (this.opts.enableEvents === true) { |
7c0ba920 JB |
98 | this.emitter = new PoolEmitter() |
99 | } | |
a35560ba S |
100 | this.workerChoiceStrategyContext = new WorkerChoiceStrategyContext( |
101 | this, | |
4a6952ff JB |
102 | () => { |
103 | const workerCreated = this.createAndSetupWorker() | |
f3636726 | 104 | this.registerWorkerMessageListener(workerCreated, message => { |
4a6952ff JB |
105 | if ( |
106 | isKillBehavior(KillBehaviors.HARD, message.kill) || | |
bdaf31cd | 107 | this.getWorkerRunningTasks(workerCreated) === 0 |
4a6952ff JB |
108 | ) { |
109 | // Kill received from the worker, means that no new tasks are submitted to that worker for a while ( > maxInactiveTime) | |
a9d9ea34 | 110 | void this.destroyWorker(workerCreated) |
4a6952ff JB |
111 | } |
112 | }) | |
113 | return workerCreated | |
114 | }, | |
e843b904 | 115 | this.opts.workerChoiceStrategy |
a35560ba | 116 | ) |
c97c7edb S |
117 | } |
118 | ||
a35560ba | 119 | private checkFilePath (filePath: string): void { |
ffcbbad8 JB |
120 | if ( |
121 | filePath == null || | |
122 | (typeof filePath === 'string' && filePath.trim().length === 0) | |
123 | ) { | |
c510fea7 APA |
124 | throw new Error('Please specify a file with a worker implementation') |
125 | } | |
126 | } | |
127 | ||
8d3782fa JB |
128 | private checkNumberOfWorkers (numberOfWorkers: number): void { |
129 | if (numberOfWorkers == null) { | |
130 | throw new Error( | |
131 | 'Cannot instantiate a pool without specifying the number of workers' | |
132 | ) | |
78cea37e | 133 | } else if (!Number.isSafeInteger(numberOfWorkers)) { |
473c717a | 134 | throw new TypeError( |
8d3782fa JB |
135 | 'Cannot instantiate a pool with a non integer number of workers' |
136 | ) | |
137 | } else if (numberOfWorkers < 0) { | |
473c717a | 138 | throw new RangeError( |
8d3782fa JB |
139 | 'Cannot instantiate a pool with a negative number of workers' |
140 | ) | |
7c0ba920 | 141 | } else if (this.type === PoolType.FIXED && numberOfWorkers === 0) { |
8d3782fa JB |
142 | throw new Error('Cannot instantiate a fixed pool with no worker') |
143 | } | |
144 | } | |
145 | ||
7c0ba920 | 146 | private checkPoolOptions (opts: PoolOptions<Worker>): void { |
e843b904 JB |
147 | this.opts.workerChoiceStrategy = |
148 | opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN | |
7c0ba920 JB |
149 | this.opts.enableEvents = opts.enableEvents ?? true |
150 | } | |
151 | ||
38e795c1 | 152 | /** {@inheritDoc} */ |
7c0ba920 JB |
153 | public abstract get type (): PoolType |
154 | ||
38e795c1 | 155 | /** {@inheritDoc} */ |
7c0ba920 JB |
156 | public get numberOfRunningTasks (): number { |
157 | return this.promiseMap.size | |
a35560ba S |
158 | } |
159 | ||
ffcbbad8 JB |
160 | /** |
161 | * Gets worker key. | |
162 | * | |
163 | * @param worker - The worker. | |
164 | * @returns The worker key. | |
165 | */ | |
166 | private getWorkerKey (worker: Worker): number | undefined { | |
167 | return [...this.workers].find(([, value]) => value.worker === worker)?.[0] | |
bf9549ae JB |
168 | } |
169 | ||
38e795c1 | 170 | /** {@inheritDoc} */ |
bdaf31cd | 171 | public getWorkerRunningTasks (worker: Worker): number | undefined { |
ffcbbad8 JB |
172 | return this.workers.get(this.getWorkerKey(worker) as number)?.tasksUsage |
173 | ?.running | |
bdaf31cd JB |
174 | } |
175 | ||
38e795c1 | 176 | /** {@inheritDoc} */ |
bf9549ae | 177 | public getWorkerAverageTasksRunTime (worker: Worker): number | undefined { |
ffcbbad8 JB |
178 | return this.workers.get(this.getWorkerKey(worker) as number)?.tasksUsage |
179 | ?.avgRunTime | |
bdaf31cd JB |
180 | } |
181 | ||
38e795c1 | 182 | /** {@inheritDoc} */ |
a35560ba S |
183 | public setWorkerChoiceStrategy ( |
184 | workerChoiceStrategy: WorkerChoiceStrategy | |
185 | ): void { | |
b98ec2e6 | 186 | this.opts.workerChoiceStrategy = workerChoiceStrategy |
ffcbbad8 JB |
187 | for (const [key, value] of this.workers) { |
188 | this.setWorker(key, value.worker, { | |
189 | run: 0, | |
190 | running: 0, | |
191 | runTime: 0, | |
192 | avgRunTime: 0 | |
193 | }) | |
ea7a90d3 | 194 | } |
a35560ba S |
195 | this.workerChoiceStrategyContext.setWorkerChoiceStrategy( |
196 | workerChoiceStrategy | |
197 | ) | |
198 | } | |
199 | ||
38e795c1 | 200 | /** {@inheritDoc} */ |
7c0ba920 JB |
201 | public abstract get busy (): boolean |
202 | ||
203 | protected internalGetBusyStatus (): boolean { | |
204 | return ( | |
205 | this.numberOfRunningTasks >= this.numberOfWorkers && | |
bdaf31cd | 206 | this.findFreeWorker() === false |
7c0ba920 JB |
207 | ) |
208 | } | |
209 | ||
38e795c1 | 210 | /** {@inheritDoc} */ |
bdaf31cd | 211 | public findFreeWorker (): Worker | false { |
ffcbbad8 JB |
212 | for (const value of this.workers.values()) { |
213 | if (value.tasksUsage.running === 0) { | |
bdaf31cd | 214 | // A worker is free, return the matching worker |
ffcbbad8 | 215 | return value.worker |
7c0ba920 JB |
216 | } |
217 | } | |
218 | return false | |
219 | } | |
220 | ||
38e795c1 | 221 | /** {@inheritDoc} */ |
78cea37e | 222 | public async execute (data: Data): Promise<Response> { |
280c2a77 S |
223 | // Configure worker to handle message with the specified task |
224 | const worker = this.chooseWorker() | |
a05c10de | 225 | const res = this.internalExecute(worker, this.nextMessageId) |
14916bf9 | 226 | this.checkAndEmitBusy() |
a05c10de | 227 | this.sendToWorker(worker, { |
e5a5c0fc JB |
228 | // eslint-disable-next-line @typescript-eslint/consistent-type-assertions |
229 | data: data ?? ({} as Data), | |
a05c10de JB |
230 | id: this.nextMessageId |
231 | }) | |
232 | ++this.nextMessageId | |
78cea37e | 233 | // eslint-disable-next-line @typescript-eslint/return-await |
280c2a77 S |
234 | return res |
235 | } | |
c97c7edb | 236 | |
38e795c1 | 237 | /** {@inheritDoc} */ |
c97c7edb | 238 | public async destroy (): Promise<void> { |
1fbcaa7c | 239 | await Promise.all( |
ffcbbad8 JB |
240 | [...this.workers].map(async ([, value]) => { |
241 | await this.destroyWorker(value.worker) | |
1fbcaa7c JB |
242 | }) |
243 | ) | |
c97c7edb S |
244 | } |
245 | ||
4a6952ff | 246 | /** |
675bb809 | 247 | * Shutdowns given worker. |
4a6952ff | 248 | * |
38e795c1 | 249 | * @param worker - A worker within `workers`. |
4a6952ff JB |
250 | */ |
251 | protected abstract destroyWorker (worker: Worker): void | Promise<void> | |
c97c7edb | 252 | |
729c563d | 253 | /** |
280c2a77 S |
254 | * Setup hook that can be overridden by a Poolifier pool implementation |
255 | * to run code before workers are created in the abstract constructor. | |
729c563d | 256 | */ |
280c2a77 S |
257 | protected setupHook (): void { |
258 | // Can be overridden | |
259 | } | |
c97c7edb | 260 | |
729c563d | 261 | /** |
280c2a77 S |
262 | * Should return whether the worker is the main worker or not. |
263 | */ | |
264 | protected abstract isMain (): boolean | |
265 | ||
266 | /** | |
bf9549ae JB |
267 | * Hook executed before the worker task promise resolution. |
268 | * Can be overridden. | |
729c563d | 269 | * |
38e795c1 | 270 | * @param worker - The worker. |
729c563d | 271 | */ |
bf9549ae JB |
272 | protected beforePromiseWorkerResponseHook (worker: Worker): void { |
273 | this.increaseWorkerRunningTasks(worker) | |
c97c7edb S |
274 | } |
275 | ||
c01733f1 | 276 | /** |
bf9549ae JB |
277 | * Hook executed after the worker task promise resolution. |
278 | * Can be overridden. | |
c01733f1 | 279 | * |
38e795c1 JB |
280 | * @param message - The received message. |
281 | * @param promise - The Promise response. | |
c01733f1 | 282 | */ |
bf9549ae JB |
283 | protected afterPromiseWorkerResponseHook ( |
284 | message: MessageValue<Response>, | |
285 | promise: PromiseWorkerResponseWrapper<Worker, Response> | |
286 | ): void { | |
287 | this.decreaseWorkerRunningTasks(promise.worker) | |
288 | this.stepWorkerRunTasks(promise.worker, 1) | |
289 | this.updateWorkerTasksRunTime(promise.worker, message.taskRunTime) | |
c01733f1 | 290 | } |
291 | ||
729c563d S |
292 | /** |
293 | * Removes the given worker from the pool. | |
294 | * | |
38e795c1 | 295 | * @param worker - The worker that will be removed. |
729c563d | 296 | */ |
f2fdaa86 | 297 | protected removeWorker (worker: Worker): void { |
ffcbbad8 JB |
298 | this.workers.delete(this.getWorkerKey(worker) as number) |
299 | --this.nextWorkerId | |
f2fdaa86 JB |
300 | } |
301 | ||
280c2a77 | 302 | /** |
675bb809 | 303 | * Chooses a worker for the next task. |
280c2a77 S |
304 | * |
305 | * The default implementation uses a round robin algorithm to distribute the load. | |
306 | * | |
307 | * @returns Worker. | |
308 | */ | |
309 | protected chooseWorker (): Worker { | |
a35560ba | 310 | return this.workerChoiceStrategyContext.execute() |
c97c7edb S |
311 | } |
312 | ||
280c2a77 | 313 | /** |
675bb809 | 314 | * Sends a message to the given worker. |
280c2a77 | 315 | * |
38e795c1 JB |
316 | * @param worker - The worker which should receive the message. |
317 | * @param message - The message. | |
280c2a77 S |
318 | */ |
319 | protected abstract sendToWorker ( | |
320 | worker: Worker, | |
321 | message: MessageValue<Data> | |
322 | ): void | |
323 | ||
4a6952ff | 324 | /** |
bdede008 | 325 | * Registers a listener callback on a given worker. |
4a6952ff | 326 | * |
38e795c1 JB |
327 | * @param worker - The worker which should register a listener. |
328 | * @param listener - The message listener callback. | |
4a6952ff JB |
329 | */ |
330 | protected abstract registerWorkerMessageListener< | |
4f7fa42a | 331 | Message extends Data | Response |
78cea37e | 332 | >(worker: Worker, listener: (message: MessageValue<Message>) => void): void |
c97c7edb | 333 | |
729c563d S |
334 | /** |
335 | * Returns a newly created worker. | |
336 | */ | |
280c2a77 | 337 | protected abstract createWorker (): Worker |
c97c7edb | 338 | |
729c563d S |
339 | /** |
340 | * Function that can be hooked up when a worker has been newly created and moved to the workers registry. | |
341 | * | |
38e795c1 | 342 | * Can be used to update the `maxListeners` or binding the `main-worker`\<-\>`worker` connection if not bind by default. |
729c563d | 343 | * |
38e795c1 | 344 | * @param worker - The newly created worker. |
729c563d | 345 | */ |
280c2a77 | 346 | protected abstract afterWorkerSetup (worker: Worker): void |
c97c7edb | 347 | |
4a6952ff JB |
348 | /** |
349 | * Creates a new worker for this pool and sets it up completely. | |
350 | * | |
351 | * @returns New, completely set up worker. | |
352 | */ | |
353 | protected createAndSetupWorker (): Worker { | |
bdacc2d2 | 354 | const worker = this.createWorker() |
280c2a77 | 355 | |
35cf1c03 | 356 | worker.on('message', this.opts.messageHandler ?? EMPTY_FUNCTION) |
a35560ba S |
357 | worker.on('error', this.opts.errorHandler ?? EMPTY_FUNCTION) |
358 | worker.on('online', this.opts.onlineHandler ?? EMPTY_FUNCTION) | |
359 | worker.on('exit', this.opts.exitHandler ?? EMPTY_FUNCTION) | |
a974afa6 JB |
360 | worker.once('exit', () => { |
361 | this.removeWorker(worker) | |
362 | }) | |
280c2a77 | 363 | |
ffcbbad8 JB |
364 | this.setWorker(this.nextWorkerId, worker, { |
365 | run: 0, | |
366 | running: 0, | |
367 | runTime: 0, | |
368 | avgRunTime: 0 | |
369 | }) | |
370 | ++this.nextWorkerId | |
280c2a77 S |
371 | |
372 | this.afterWorkerSetup(worker) | |
373 | ||
c97c7edb S |
374 | return worker |
375 | } | |
be0676b3 APA |
376 | |
377 | /** | |
378 | * This function is the listener registered for each worker. | |
379 | * | |
bdacc2d2 | 380 | * @returns The listener function to execute when a message is received from a worker. |
be0676b3 APA |
381 | */ |
382 | protected workerListener (): (message: MessageValue<Response>) => void { | |
4a6952ff | 383 | return message => { |
bdacc2d2 JB |
384 | if (message.id !== undefined) { |
385 | const promise = this.promiseMap.get(message.id) | |
386 | if (promise !== undefined) { | |
78cea37e | 387 | if (message.error != null) { |
a05c10de JB |
388 | promise.reject(message.error) |
389 | } else { | |
390 | promise.resolve(message.data as Response) | |
391 | } | |
bf9549ae | 392 | this.afterPromiseWorkerResponseHook(message, promise) |
be0676b3 APA |
393 | this.promiseMap.delete(message.id) |
394 | } | |
395 | } | |
396 | } | |
be0676b3 | 397 | } |
7c0ba920 | 398 | |
78cea37e JB |
399 | private async internalExecute ( |
400 | worker: Worker, | |
401 | messageId: number | |
402 | ): Promise<Response> { | |
403 | this.beforePromiseWorkerResponseHook(worker) | |
404 | return await new Promise<Response>((resolve, reject) => { | |
405 | this.promiseMap.set(messageId, { resolve, reject, worker }) | |
406 | }) | |
407 | } | |
408 | ||
7c0ba920 | 409 | private checkAndEmitBusy (): void { |
78cea37e | 410 | if (this.opts.enableEvents === true && this.busy) { |
7c0ba920 JB |
411 | this.emitter?.emit('busy') |
412 | } | |
413 | } | |
bf9549ae JB |
414 | |
415 | /** | |
10fcfaf4 | 416 | * Increases the number of tasks that the given worker has applied. |
bf9549ae | 417 | * |
38e795c1 | 418 | * @param worker - Worker which running tasks is increased. |
bf9549ae JB |
419 | */ |
420 | private increaseWorkerRunningTasks (worker: Worker): void { | |
421 | this.stepWorkerRunningTasks(worker, 1) | |
422 | } | |
423 | ||
424 | /** | |
10fcfaf4 | 425 | * Decreases the number of tasks that the given worker has applied. |
bf9549ae | 426 | * |
38e795c1 | 427 | * @param worker - Worker which running tasks is decreased. |
bf9549ae JB |
428 | */ |
429 | private decreaseWorkerRunningTasks (worker: Worker): void { | |
430 | this.stepWorkerRunningTasks(worker, -1) | |
431 | } | |
432 | ||
ffcbbad8 JB |
433 | /** |
434 | * Get tasks usage of the given worker. | |
435 | * | |
436 | * @param worker - Worker which tasks usage is returned. | |
437 | */ | |
438 | private getWorkerTasksUsage (worker: Worker): TasksUsage | undefined { | |
439 | if (this.checkWorker(worker)) { | |
440 | const workerKey = this.getWorkerKey(worker) as number | |
441 | const workerEntry = this.workers.get(workerKey) as WorkerType<Worker> | |
442 | return workerEntry.tasksUsage | |
443 | } | |
444 | } | |
445 | ||
bf9549ae | 446 | /** |
10fcfaf4 | 447 | * Steps the number of tasks that the given worker has applied. |
bf9549ae | 448 | * |
38e795c1 JB |
449 | * @param worker - Worker which running tasks are stepped. |
450 | * @param step - Number of running tasks step. | |
bf9549ae JB |
451 | */ |
452 | private stepWorkerRunningTasks (worker: Worker, step: number): void { | |
ffcbbad8 JB |
453 | // prettier-ignore |
454 | (this.getWorkerTasksUsage(worker) as TasksUsage).running += step | |
bf9549ae JB |
455 | } |
456 | ||
457 | /** | |
10fcfaf4 | 458 | * Steps the number of tasks that the given worker has run. |
bf9549ae | 459 | * |
38e795c1 JB |
460 | * @param worker - Worker which has run tasks. |
461 | * @param step - Number of run tasks step. | |
bf9549ae | 462 | */ |
10fcfaf4 | 463 | private stepWorkerRunTasks (worker: Worker, step: number): void { |
ffcbbad8 JB |
464 | // prettier-ignore |
465 | (this.getWorkerTasksUsage(worker) as TasksUsage).run += step | |
bf9549ae JB |
466 | } |
467 | ||
468 | /** | |
23135a89 | 469 | * Updates tasks runtime for the given worker. |
bf9549ae | 470 | * |
38e795c1 JB |
471 | * @param worker - Worker which run the task. |
472 | * @param taskRunTime - Worker task runtime. | |
bf9549ae JB |
473 | */ |
474 | private updateWorkerTasksRunTime ( | |
475 | worker: Worker, | |
476 | taskRunTime: number | undefined | |
10fcfaf4 JB |
477 | ): void { |
478 | if ( | |
479 | this.workerChoiceStrategyContext.getWorkerChoiceStrategy() | |
ffcbbad8 | 480 | .requiredStatistics.runTime |
10fcfaf4 | 481 | ) { |
ffcbbad8 JB |
482 | const workerTasksUsage = this.getWorkerTasksUsage(worker) as TasksUsage |
483 | workerTasksUsage.runTime += taskRunTime ?? 0 | |
484 | if (workerTasksUsage.run !== 0) { | |
485 | workerTasksUsage.avgRunTime = | |
486 | workerTasksUsage.runTime / workerTasksUsage.run | |
10fcfaf4 | 487 | } |
a05c10de JB |
488 | } |
489 | } | |
490 | ||
491 | /** | |
ffcbbad8 | 492 | * Sets the given worker. |
ea7a90d3 | 493 | * |
ffcbbad8 | 494 | * @param workerKey - The worker key. |
38e795c1 | 495 | * @param worker - The worker. |
ffcbbad8 | 496 | * @param tasksUsage - The worker tasks usage. |
ea7a90d3 | 497 | */ |
ffcbbad8 JB |
498 | private setWorker ( |
499 | workerKey: number, | |
500 | worker: Worker, | |
501 | tasksUsage: TasksUsage | |
502 | ): void { | |
503 | this.workers.set(workerKey, { | |
504 | worker, | |
505 | tasksUsage | |
ea7a90d3 JB |
506 | }) |
507 | } | |
508 | ||
bf9549ae | 509 | /** |
ffcbbad8 | 510 | * Checks if the given worker is registered in the pool. |
ea7a90d3 | 511 | * |
ffcbbad8 JB |
512 | * @param worker - Worker to check. |
513 | * @returns `true` if the worker is registered in the pool. | |
ea7a90d3 | 514 | */ |
ffcbbad8 JB |
515 | private checkWorker (worker: Worker): boolean { |
516 | if (this.getWorkerKey(worker) == null) { | |
517 | throw new Error('Worker could not be found in the pool') | |
518 | } | |
519 | return true | |
ea7a90d3 | 520 | } |
c97c7edb | 521 | } |