Commit | Line | Data |
---|---|---|
2845f2a5 | 1 | import { randomUUID } from 'node:crypto' |
62c15a68 | 2 | import { performance } from 'node:perf_hooks' |
ef083f7b | 3 | import type { TransferListItem } from 'node:worker_threads' |
f80125ca | 4 | import { EventEmitterAsyncResource } from 'node:events' |
f18fd12b | 5 | import { AsyncResource } from 'node:async_hooks' |
5c4d16da JB |
6 | import type { |
7 | MessageValue, | |
8 | PromiseResponseWrapper, | |
76d91ea0 | 9 | Task |
5c4d16da | 10 | } from '../utility-types' |
bbeadd16 | 11 | import { |
ff128cc9 | 12 | DEFAULT_TASK_NAME, |
bbeadd16 JB |
13 | DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, |
14 | EMPTY_FUNCTION, | |
dc021bcc | 15 | average, |
463226a4 | 16 | exponentialDelay, |
59317253 | 17 | isKillBehavior, |
0d80593b | 18 | isPlainObject, |
90d6701c | 19 | max, |
afe0d5bf | 20 | median, |
90d6701c | 21 | min, |
463226a4 JB |
22 | round, |
23 | sleep | |
bbeadd16 | 24 | } from '../utils' |
59317253 | 25 | import { KillBehaviors } from '../worker/worker-options' |
6703b9f4 | 26 | import type { TaskFunction } from '../worker/task-functions' |
c4855468 | 27 | import { |
65d7a1c9 | 28 | type IPool, |
c4855468 | 29 | PoolEvents, |
6b27d407 | 30 | type PoolInfo, |
c4855468 | 31 | type PoolOptions, |
6b27d407 JB |
32 | type PoolType, |
33 | PoolTypes, | |
4b628b48 | 34 | type TasksQueueOptions |
c4855468 | 35 | } from './pool' |
4d159167 JB |
36 | import type { |
37 | IWorker, | |
38 | IWorkerNode, | |
f1f77f45 | 39 | TaskStatistics, |
4d159167 | 40 | WorkerInfo, |
9f95d5eb | 41 | WorkerNodeEventDetail, |
4d159167 JB |
42 | WorkerType, |
43 | WorkerUsage | |
e102732c | 44 | } from './worker' |
a35560ba | 45 | import { |
008512c7 | 46 | type MeasurementStatisticsRequirements, |
f0d7f803 | 47 | Measurements, |
a35560ba | 48 | WorkerChoiceStrategies, |
a20f0ba5 JB |
49 | type WorkerChoiceStrategy, |
50 | type WorkerChoiceStrategyOptions | |
bdaf31cd JB |
51 | } from './selection-strategies/selection-strategies-types' |
52 | import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context' | |
92b1feaa | 53 | import { version } from './version' |
4b628b48 | 54 | import { WorkerNode } from './worker-node' |
bde6b5d7 JB |
55 | import { |
56 | checkFilePath, | |
57 | checkValidTasksQueueOptions, | |
bfc75cca JB |
58 | checkValidWorkerChoiceStrategy, |
59 | updateMeasurementStatistics | |
bde6b5d7 | 60 | } from './utils' |
23ccf9d7 | 61 | |
729c563d | 62 | /** |
ea7a90d3 | 63 | * Base class that implements some shared logic for all poolifier pools. |
729c563d | 64 | * |
38e795c1 | 65 | * @typeParam Worker - Type of worker which manages this pool. |
e102732c JB |
66 | * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data. |
67 | * @typeParam Response - Type of execution response. This can only be structured-cloneable data. | |
729c563d | 68 | */ |
c97c7edb | 69 | export abstract class AbstractPool< |
f06e48d8 | 70 | Worker extends IWorker, |
d3c8a1a8 S |
71 | Data = unknown, |
72 | Response = unknown | |
c4855468 | 73 | > implements IPool<Worker, Data, Response> { |
afc003b2 | 74 | /** @inheritDoc */ |
4b628b48 | 75 | public readonly workerNodes: Array<IWorkerNode<Worker, Data>> = [] |
4a6952ff | 76 | |
afc003b2 | 77 | /** @inheritDoc */ |
f80125ca | 78 | public emitter?: EventEmitterAsyncResource |
7c0ba920 | 79 | |
fcd39179 JB |
80 | /** |
81 | * Dynamic pool maximum size property placeholder. | |
82 | */ | |
83 | protected readonly max?: number | |
84 | ||
be0676b3 | 85 | /** |
419e8121 | 86 | * The task execution response promise map: |
2740a743 | 87 | * - `key`: The message id of each submitted task. |
a3445496 | 88 | * - `value`: An object that contains the worker, the execution response promise resolve and reject callbacks. |
be0676b3 | 89 | * |
a3445496 | 90 | * When we receive a message from the worker, we get a map entry with the promise resolve/reject bound to the message id. |
be0676b3 | 91 | */ |
501aea93 JB |
92 | protected promiseResponseMap: Map<string, PromiseResponseWrapper<Response>> = |
93 | new Map<string, PromiseResponseWrapper<Response>>() | |
c97c7edb | 94 | |
a35560ba | 95 | /** |
51fe3d3c | 96 | * Worker choice strategy context referencing a worker choice algorithm implementation. |
a35560ba S |
97 | */ |
98 | protected workerChoiceStrategyContext: WorkerChoiceStrategyContext< | |
78cea37e JB |
99 | Worker, |
100 | Data, | |
101 | Response | |
a35560ba S |
102 | > |
103 | ||
72ae84a2 JB |
104 | /** |
105 | * The task functions added at runtime map: | |
106 | * - `key`: The task function name. | |
107 | * - `value`: The task function itself. | |
108 | */ | |
109 | private readonly taskFunctions: Map<string, TaskFunction<Data, Response>> | |
110 | ||
15b176e0 JB |
111 | /** |
112 | * Whether the pool is started or not. | |
113 | */ | |
114 | private started: boolean | |
47352846 JB |
115 | /** |
116 | * Whether the pool is starting or not. | |
117 | */ | |
118 | private starting: boolean | |
711623b8 JB |
119 | /** |
120 | * Whether the pool is destroying or not. | |
121 | */ | |
122 | private destroying: boolean | |
55082af9 JB |
123 | /** |
124 | * Whether the pool ready event has been emitted or not. | |
125 | */ | |
126 | private readyEventEmitted: boolean | |
afe0d5bf JB |
127 | /** |
128 | * The start timestamp of the pool. | |
129 | */ | |
130 | private readonly startTimestamp | |
131 | ||
729c563d S |
132 | /** |
133 | * Constructs a new poolifier pool. | |
134 | * | |
38e795c1 | 135 | * @param numberOfWorkers - Number of workers that this pool should manage. |
029715f0 | 136 | * @param filePath - Path to the worker file. |
38e795c1 | 137 | * @param opts - Options for the pool. |
729c563d | 138 | */ |
c97c7edb | 139 | public constructor ( |
b4213b7f JB |
140 | protected readonly numberOfWorkers: number, |
141 | protected readonly filePath: string, | |
142 | protected readonly opts: PoolOptions<Worker> | |
c97c7edb | 143 | ) { |
78cea37e | 144 | if (!this.isMain()) { |
04f45163 | 145 | throw new Error( |
8c6d4acf | 146 | 'Cannot start a pool from a worker with the same type as the pool' |
04f45163 | 147 | ) |
c97c7edb | 148 | } |
bde6b5d7 | 149 | checkFilePath(this.filePath) |
8003c026 | 150 | this.checkNumberOfWorkers(this.numberOfWorkers) |
7c0ba920 | 151 | this.checkPoolOptions(this.opts) |
1086026a | 152 | |
7254e419 JB |
153 | this.chooseWorkerNode = this.chooseWorkerNode.bind(this) |
154 | this.executeTask = this.executeTask.bind(this) | |
155 | this.enqueueTask = this.enqueueTask.bind(this) | |
1086026a | 156 | |
6bd72cd0 | 157 | if (this.opts.enableEvents === true) { |
b5604034 | 158 | this.initializeEventEmitter() |
7c0ba920 | 159 | } |
d59df138 JB |
160 | this.workerChoiceStrategyContext = new WorkerChoiceStrategyContext< |
161 | Worker, | |
162 | Data, | |
163 | Response | |
da309861 JB |
164 | >( |
165 | this, | |
166 | this.opts.workerChoiceStrategy, | |
167 | this.opts.workerChoiceStrategyOptions | |
168 | ) | |
b6b32453 JB |
169 | |
170 | this.setupHook() | |
171 | ||
72ae84a2 JB |
172 | this.taskFunctions = new Map<string, TaskFunction<Data, Response>>() |
173 | ||
47352846 | 174 | this.started = false |
075e51d1 | 175 | this.starting = false |
711623b8 | 176 | this.destroying = false |
55082af9 | 177 | this.readyEventEmitted = false |
47352846 JB |
178 | if (this.opts.startWorkers === true) { |
179 | this.start() | |
180 | } | |
afe0d5bf JB |
181 | |
182 | this.startTimestamp = performance.now() | |
c97c7edb S |
183 | } |
184 | ||
8d3782fa JB |
185 | private checkNumberOfWorkers (numberOfWorkers: number): void { |
186 | if (numberOfWorkers == null) { | |
187 | throw new Error( | |
188 | 'Cannot instantiate a pool without specifying the number of workers' | |
189 | ) | |
78cea37e | 190 | } else if (!Number.isSafeInteger(numberOfWorkers)) { |
473c717a | 191 | throw new TypeError( |
0d80593b | 192 | 'Cannot instantiate a pool with a non safe integer number of workers' |
8d3782fa JB |
193 | ) |
194 | } else if (numberOfWorkers < 0) { | |
473c717a | 195 | throw new RangeError( |
8d3782fa JB |
196 | 'Cannot instantiate a pool with a negative number of workers' |
197 | ) | |
6b27d407 | 198 | } else if (this.type === PoolTypes.fixed && numberOfWorkers === 0) { |
2431bdb4 JB |
199 | throw new RangeError('Cannot instantiate a fixed pool with zero worker') |
200 | } | |
201 | } | |
202 | ||
7c0ba920 | 203 | private checkPoolOptions (opts: PoolOptions<Worker>): void { |
0d80593b | 204 | if (isPlainObject(opts)) { |
47352846 | 205 | this.opts.startWorkers = opts.startWorkers ?? true |
bde6b5d7 | 206 | checkValidWorkerChoiceStrategy( |
2324f8c9 JB |
207 | opts.workerChoiceStrategy as WorkerChoiceStrategy |
208 | ) | |
0d80593b JB |
209 | this.opts.workerChoiceStrategy = |
210 | opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN | |
2324f8c9 JB |
211 | this.checkValidWorkerChoiceStrategyOptions( |
212 | opts.workerChoiceStrategyOptions as WorkerChoiceStrategyOptions | |
213 | ) | |
8990357d JB |
214 | this.opts.workerChoiceStrategyOptions = { |
215 | ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, | |
216 | ...opts.workerChoiceStrategyOptions | |
217 | } | |
1f68cede | 218 | this.opts.restartWorkerOnError = opts.restartWorkerOnError ?? true |
0d80593b JB |
219 | this.opts.enableEvents = opts.enableEvents ?? true |
220 | this.opts.enableTasksQueue = opts.enableTasksQueue ?? false | |
221 | if (this.opts.enableTasksQueue) { | |
bde6b5d7 | 222 | checkValidTasksQueueOptions(opts.tasksQueueOptions as TasksQueueOptions) |
0d80593b JB |
223 | this.opts.tasksQueueOptions = this.buildTasksQueueOptions( |
224 | opts.tasksQueueOptions as TasksQueueOptions | |
225 | ) | |
226 | } | |
227 | } else { | |
228 | throw new TypeError('Invalid pool options: must be a plain object') | |
7171d33f | 229 | } |
aee46736 JB |
230 | } |
231 | ||
0d80593b JB |
232 | private checkValidWorkerChoiceStrategyOptions ( |
233 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | |
234 | ): void { | |
2324f8c9 JB |
235 | if ( |
236 | workerChoiceStrategyOptions != null && | |
237 | !isPlainObject(workerChoiceStrategyOptions) | |
238 | ) { | |
0d80593b JB |
239 | throw new TypeError( |
240 | 'Invalid worker choice strategy options: must be a plain object' | |
241 | ) | |
242 | } | |
8990357d | 243 | if ( |
2324f8c9 | 244 | workerChoiceStrategyOptions?.retries != null && |
8c0b113f | 245 | !Number.isSafeInteger(workerChoiceStrategyOptions.retries) |
8990357d JB |
246 | ) { |
247 | throw new TypeError( | |
8c0b113f | 248 | 'Invalid worker choice strategy options: retries must be an integer' |
8990357d JB |
249 | ) |
250 | } | |
251 | if ( | |
2324f8c9 | 252 | workerChoiceStrategyOptions?.retries != null && |
8c0b113f | 253 | workerChoiceStrategyOptions.retries < 0 |
8990357d JB |
254 | ) { |
255 | throw new RangeError( | |
8c0b113f | 256 | `Invalid worker choice strategy options: retries '${workerChoiceStrategyOptions.retries}' must be greater or equal than zero` |
8990357d JB |
257 | ) |
258 | } | |
49be33fe | 259 | if ( |
2324f8c9 | 260 | workerChoiceStrategyOptions?.weights != null && |
6b27d407 | 261 | Object.keys(workerChoiceStrategyOptions.weights).length !== this.maxSize |
49be33fe JB |
262 | ) { |
263 | throw new Error( | |
264 | 'Invalid worker choice strategy options: must have a weight for each worker node' | |
265 | ) | |
266 | } | |
f0d7f803 | 267 | if ( |
2324f8c9 | 268 | workerChoiceStrategyOptions?.measurement != null && |
f0d7f803 JB |
269 | !Object.values(Measurements).includes( |
270 | workerChoiceStrategyOptions.measurement | |
271 | ) | |
272 | ) { | |
273 | throw new Error( | |
274 | `Invalid worker choice strategy options: invalid measurement '${workerChoiceStrategyOptions.measurement}'` | |
275 | ) | |
276 | } | |
0d80593b JB |
277 | } |
278 | ||
b5604034 | 279 | private initializeEventEmitter (): void { |
5b7d00b4 | 280 | this.emitter = new EventEmitterAsyncResource({ |
b5604034 JB |
281 | name: `poolifier:${this.type}-${this.worker}-pool` |
282 | }) | |
283 | } | |
284 | ||
08f3f44c | 285 | /** @inheritDoc */ |
6b27d407 JB |
286 | public get info (): PoolInfo { |
287 | return { | |
23ccf9d7 | 288 | version, |
6b27d407 | 289 | type: this.type, |
184855e6 | 290 | worker: this.worker, |
47352846 | 291 | started: this.started, |
2431bdb4 JB |
292 | ready: this.ready, |
293 | strategy: this.opts.workerChoiceStrategy as WorkerChoiceStrategy, | |
6b27d407 JB |
294 | minSize: this.minSize, |
295 | maxSize: this.maxSize, | |
c05f0d50 JB |
296 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
297 | .runTime.aggregate && | |
1305e9a8 JB |
298 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
299 | .waitTime.aggregate && { utilization: round(this.utilization) }), | |
6b27d407 JB |
300 | workerNodes: this.workerNodes.length, |
301 | idleWorkerNodes: this.workerNodes.reduce( | |
302 | (accumulator, workerNode) => | |
f59e1027 | 303 | workerNode.usage.tasks.executing === 0 |
a4e07f72 JB |
304 | ? accumulator + 1 |
305 | : accumulator, | |
6b27d407 JB |
306 | 0 |
307 | ), | |
308 | busyWorkerNodes: this.workerNodes.reduce( | |
42c677c1 JB |
309 | (accumulator, _workerNode, workerNodeKey) => |
310 | this.isWorkerNodeBusy(workerNodeKey) ? accumulator + 1 : accumulator, | |
6b27d407 JB |
311 | 0 |
312 | ), | |
a4e07f72 | 313 | executedTasks: this.workerNodes.reduce( |
6b27d407 | 314 | (accumulator, workerNode) => |
f59e1027 | 315 | accumulator + workerNode.usage.tasks.executed, |
a4e07f72 JB |
316 | 0 |
317 | ), | |
318 | executingTasks: this.workerNodes.reduce( | |
319 | (accumulator, workerNode) => | |
f59e1027 | 320 | accumulator + workerNode.usage.tasks.executing, |
6b27d407 JB |
321 | 0 |
322 | ), | |
daf86646 JB |
323 | ...(this.opts.enableTasksQueue === true && { |
324 | queuedTasks: this.workerNodes.reduce( | |
325 | (accumulator, workerNode) => | |
326 | accumulator + workerNode.usage.tasks.queued, | |
327 | 0 | |
328 | ) | |
329 | }), | |
330 | ...(this.opts.enableTasksQueue === true && { | |
331 | maxQueuedTasks: this.workerNodes.reduce( | |
332 | (accumulator, workerNode) => | |
333 | accumulator + (workerNode.usage.tasks?.maxQueued ?? 0), | |
334 | 0 | |
335 | ) | |
336 | }), | |
a1763c54 JB |
337 | ...(this.opts.enableTasksQueue === true && { |
338 | backPressure: this.hasBackPressure() | |
339 | }), | |
68cbdc84 JB |
340 | ...(this.opts.enableTasksQueue === true && { |
341 | stolenTasks: this.workerNodes.reduce( | |
342 | (accumulator, workerNode) => | |
343 | accumulator + workerNode.usage.tasks.stolen, | |
344 | 0 | |
345 | ) | |
346 | }), | |
a4e07f72 JB |
347 | failedTasks: this.workerNodes.reduce( |
348 | (accumulator, workerNode) => | |
f59e1027 | 349 | accumulator + workerNode.usage.tasks.failed, |
a4e07f72 | 350 | 0 |
1dcf8b7b JB |
351 | ), |
352 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
353 | .runTime.aggregate && { | |
354 | runTime: { | |
98e72cda | 355 | minimum: round( |
90d6701c | 356 | min( |
98e72cda | 357 | ...this.workerNodes.map( |
041dc05b | 358 | workerNode => workerNode.usage.runTime?.minimum ?? Infinity |
98e72cda | 359 | ) |
1dcf8b7b JB |
360 | ) |
361 | ), | |
98e72cda | 362 | maximum: round( |
90d6701c | 363 | max( |
98e72cda | 364 | ...this.workerNodes.map( |
041dc05b | 365 | workerNode => workerNode.usage.runTime?.maximum ?? -Infinity |
98e72cda | 366 | ) |
1dcf8b7b | 367 | ) |
98e72cda | 368 | ), |
3baa0837 JB |
369 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
370 | .runTime.average && { | |
371 | average: round( | |
372 | average( | |
373 | this.workerNodes.reduce<number[]>( | |
374 | (accumulator, workerNode) => | |
375 | accumulator.concat(workerNode.usage.runTime.history), | |
376 | [] | |
377 | ) | |
98e72cda | 378 | ) |
dc021bcc | 379 | ) |
3baa0837 | 380 | }), |
98e72cda JB |
381 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
382 | .runTime.median && { | |
383 | median: round( | |
384 | median( | |
3baa0837 JB |
385 | this.workerNodes.reduce<number[]>( |
386 | (accumulator, workerNode) => | |
387 | accumulator.concat(workerNode.usage.runTime.history), | |
388 | [] | |
98e72cda JB |
389 | ) |
390 | ) | |
391 | ) | |
392 | }) | |
1dcf8b7b JB |
393 | } |
394 | }), | |
395 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
396 | .waitTime.aggregate && { | |
397 | waitTime: { | |
98e72cda | 398 | minimum: round( |
90d6701c | 399 | min( |
98e72cda | 400 | ...this.workerNodes.map( |
041dc05b | 401 | workerNode => workerNode.usage.waitTime?.minimum ?? Infinity |
98e72cda | 402 | ) |
1dcf8b7b JB |
403 | ) |
404 | ), | |
98e72cda | 405 | maximum: round( |
90d6701c | 406 | max( |
98e72cda | 407 | ...this.workerNodes.map( |
041dc05b | 408 | workerNode => workerNode.usage.waitTime?.maximum ?? -Infinity |
98e72cda | 409 | ) |
1dcf8b7b | 410 | ) |
98e72cda | 411 | ), |
3baa0837 JB |
412 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
413 | .waitTime.average && { | |
414 | average: round( | |
415 | average( | |
416 | this.workerNodes.reduce<number[]>( | |
417 | (accumulator, workerNode) => | |
418 | accumulator.concat(workerNode.usage.waitTime.history), | |
419 | [] | |
420 | ) | |
98e72cda | 421 | ) |
dc021bcc | 422 | ) |
3baa0837 | 423 | }), |
98e72cda JB |
424 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
425 | .waitTime.median && { | |
426 | median: round( | |
427 | median( | |
3baa0837 JB |
428 | this.workerNodes.reduce<number[]>( |
429 | (accumulator, workerNode) => | |
430 | accumulator.concat(workerNode.usage.waitTime.history), | |
431 | [] | |
98e72cda JB |
432 | ) |
433 | ) | |
434 | ) | |
435 | }) | |
1dcf8b7b JB |
436 | } |
437 | }) | |
6b27d407 JB |
438 | } |
439 | } | |
08f3f44c | 440 | |
aa9eede8 JB |
441 | /** |
442 | * The pool readiness boolean status. | |
443 | */ | |
2431bdb4 JB |
444 | private get ready (): boolean { |
445 | return ( | |
b97d82d8 JB |
446 | this.workerNodes.reduce( |
447 | (accumulator, workerNode) => | |
448 | !workerNode.info.dynamic && workerNode.info.ready | |
449 | ? accumulator + 1 | |
450 | : accumulator, | |
451 | 0 | |
452 | ) >= this.minSize | |
2431bdb4 JB |
453 | ) |
454 | } | |
455 | ||
afe0d5bf | 456 | /** |
aa9eede8 | 457 | * The approximate pool utilization. |
afe0d5bf JB |
458 | * |
459 | * @returns The pool utilization. | |
460 | */ | |
461 | private get utilization (): number { | |
8e5ca040 | 462 | const poolTimeCapacity = |
fe7d90db | 463 | (performance.now() - this.startTimestamp) * this.maxSize |
afe0d5bf JB |
464 | const totalTasksRunTime = this.workerNodes.reduce( |
465 | (accumulator, workerNode) => | |
71514351 | 466 | accumulator + (workerNode.usage.runTime?.aggregate ?? 0), |
afe0d5bf JB |
467 | 0 |
468 | ) | |
469 | const totalTasksWaitTime = this.workerNodes.reduce( | |
470 | (accumulator, workerNode) => | |
71514351 | 471 | accumulator + (workerNode.usage.waitTime?.aggregate ?? 0), |
afe0d5bf JB |
472 | 0 |
473 | ) | |
8e5ca040 | 474 | return (totalTasksRunTime + totalTasksWaitTime) / poolTimeCapacity |
afe0d5bf JB |
475 | } |
476 | ||
8881ae32 | 477 | /** |
aa9eede8 | 478 | * The pool type. |
8881ae32 JB |
479 | * |
480 | * If it is `'dynamic'`, it provides the `max` property. | |
481 | */ | |
482 | protected abstract get type (): PoolType | |
483 | ||
184855e6 | 484 | /** |
aa9eede8 | 485 | * The worker type. |
184855e6 JB |
486 | */ |
487 | protected abstract get worker (): WorkerType | |
488 | ||
c2ade475 | 489 | /** |
aa9eede8 | 490 | * The pool minimum size. |
c2ade475 | 491 | */ |
8735b4e5 JB |
492 | protected get minSize (): number { |
493 | return this.numberOfWorkers | |
494 | } | |
ff733df7 JB |
495 | |
496 | /** | |
aa9eede8 | 497 | * The pool maximum size. |
ff733df7 | 498 | */ |
8735b4e5 JB |
499 | protected get maxSize (): number { |
500 | return this.max ?? this.numberOfWorkers | |
501 | } | |
a35560ba | 502 | |
6b813701 JB |
503 | /** |
504 | * Checks if the worker id sent in the received message from a worker is valid. | |
505 | * | |
506 | * @param message - The received message. | |
507 | * @throws {@link https://nodejs.org/api/errors.html#class-error} If the worker id is invalid. | |
508 | */ | |
4d159167 | 509 | private checkMessageWorkerId (message: MessageValue<Data | Response>): void { |
310de0aa JB |
510 | if (message.workerId == null) { |
511 | throw new Error('Worker message received without worker id') | |
8e5a7cf9 | 512 | } else if (this.getWorkerNodeKeyByWorkerId(message.workerId) === -1) { |
21f710aa JB |
513 | throw new Error( |
514 | `Worker message received from unknown worker '${message.workerId}'` | |
515 | ) | |
516 | } | |
517 | } | |
518 | ||
ffcbbad8 | 519 | /** |
f06e48d8 | 520 | * Gets the given worker its worker node key. |
ffcbbad8 JB |
521 | * |
522 | * @param worker - The worker. | |
f59e1027 | 523 | * @returns The worker node key if found in the pool worker nodes, `-1` otherwise. |
ffcbbad8 | 524 | */ |
aad6fb64 | 525 | private getWorkerNodeKeyByWorker (worker: Worker): number { |
f06e48d8 | 526 | return this.workerNodes.findIndex( |
041dc05b | 527 | workerNode => workerNode.worker === worker |
f06e48d8 | 528 | ) |
bf9549ae JB |
529 | } |
530 | ||
aa9eede8 JB |
531 | /** |
532 | * Gets the worker node key given its worker id. | |
533 | * | |
534 | * @param workerId - The worker id. | |
aad6fb64 | 535 | * @returns The worker node key if the worker id is found in the pool worker nodes, `-1` otherwise. |
aa9eede8 | 536 | */ |
72ae84a2 | 537 | private getWorkerNodeKeyByWorkerId (workerId: number | undefined): number { |
aad6fb64 | 538 | return this.workerNodes.findIndex( |
041dc05b | 539 | workerNode => workerNode.info.id === workerId |
aad6fb64 | 540 | ) |
aa9eede8 JB |
541 | } |
542 | ||
afc003b2 | 543 | /** @inheritDoc */ |
a35560ba | 544 | public setWorkerChoiceStrategy ( |
59219cbb JB |
545 | workerChoiceStrategy: WorkerChoiceStrategy, |
546 | workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions | |
a35560ba | 547 | ): void { |
bde6b5d7 | 548 | checkValidWorkerChoiceStrategy(workerChoiceStrategy) |
b98ec2e6 | 549 | this.opts.workerChoiceStrategy = workerChoiceStrategy |
b6b32453 JB |
550 | this.workerChoiceStrategyContext.setWorkerChoiceStrategy( |
551 | this.opts.workerChoiceStrategy | |
552 | ) | |
553 | if (workerChoiceStrategyOptions != null) { | |
554 | this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) | |
555 | } | |
aa9eede8 | 556 | for (const [workerNodeKey, workerNode] of this.workerNodes.entries()) { |
4b628b48 | 557 | workerNode.resetUsage() |
9edb9717 | 558 | this.sendStatisticsMessageToWorker(workerNodeKey) |
59219cbb | 559 | } |
a20f0ba5 JB |
560 | } |
561 | ||
562 | /** @inheritDoc */ | |
563 | public setWorkerChoiceStrategyOptions ( | |
564 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | |
565 | ): void { | |
0d80593b | 566 | this.checkValidWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) |
8990357d JB |
567 | this.opts.workerChoiceStrategyOptions = { |
568 | ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, | |
569 | ...workerChoiceStrategyOptions | |
570 | } | |
a20f0ba5 JB |
571 | this.workerChoiceStrategyContext.setOptions( |
572 | this.opts.workerChoiceStrategyOptions | |
a35560ba S |
573 | ) |
574 | } | |
575 | ||
a20f0ba5 | 576 | /** @inheritDoc */ |
8f52842f JB |
577 | public enableTasksQueue ( |
578 | enable: boolean, | |
579 | tasksQueueOptions?: TasksQueueOptions | |
580 | ): void { | |
a20f0ba5 | 581 | if (this.opts.enableTasksQueue === true && !enable) { |
d6ca1416 JB |
582 | this.unsetTaskStealing() |
583 | this.unsetTasksStealingOnBackPressure() | |
ef41a6e6 | 584 | this.flushTasksQueues() |
a20f0ba5 JB |
585 | } |
586 | this.opts.enableTasksQueue = enable | |
8f52842f | 587 | this.setTasksQueueOptions(tasksQueueOptions as TasksQueueOptions) |
a20f0ba5 JB |
588 | } |
589 | ||
590 | /** @inheritDoc */ | |
8f52842f | 591 | public setTasksQueueOptions (tasksQueueOptions: TasksQueueOptions): void { |
a20f0ba5 | 592 | if (this.opts.enableTasksQueue === true) { |
bde6b5d7 | 593 | checkValidTasksQueueOptions(tasksQueueOptions) |
8f52842f JB |
594 | this.opts.tasksQueueOptions = |
595 | this.buildTasksQueueOptions(tasksQueueOptions) | |
5b49e864 | 596 | this.setTasksQueueSize(this.opts.tasksQueueOptions.size as number) |
d6ca1416 | 597 | if (this.opts.tasksQueueOptions.taskStealing === true) { |
9f99eb9b | 598 | this.unsetTaskStealing() |
d6ca1416 JB |
599 | this.setTaskStealing() |
600 | } else { | |
601 | this.unsetTaskStealing() | |
602 | } | |
603 | if (this.opts.tasksQueueOptions.tasksStealingOnBackPressure === true) { | |
9f99eb9b | 604 | this.unsetTasksStealingOnBackPressure() |
d6ca1416 JB |
605 | this.setTasksStealingOnBackPressure() |
606 | } else { | |
607 | this.unsetTasksStealingOnBackPressure() | |
608 | } | |
5baee0d7 | 609 | } else if (this.opts.tasksQueueOptions != null) { |
a20f0ba5 JB |
610 | delete this.opts.tasksQueueOptions |
611 | } | |
612 | } | |
613 | ||
9b38ab2d JB |
614 | private buildTasksQueueOptions ( |
615 | tasksQueueOptions: TasksQueueOptions | |
616 | ): TasksQueueOptions { | |
617 | return { | |
618 | ...{ | |
619 | size: Math.pow(this.maxSize, 2), | |
620 | concurrency: 1, | |
621 | taskStealing: true, | |
622 | tasksStealingOnBackPressure: true | |
623 | }, | |
624 | ...tasksQueueOptions | |
625 | } | |
626 | } | |
627 | ||
5b49e864 | 628 | private setTasksQueueSize (size: number): void { |
20c6f652 | 629 | for (const workerNode of this.workerNodes) { |
ff3f866a | 630 | workerNode.tasksQueueBackPressureSize = size |
20c6f652 JB |
631 | } |
632 | } | |
633 | ||
d6ca1416 JB |
634 | private setTaskStealing (): void { |
635 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 636 | this.workerNodes[workerNodeKey].on( |
65542a35 | 637 | 'idleWorkerNode', |
e1c2dba7 | 638 | this.handleIdleWorkerNodeEvent |
9f95d5eb | 639 | ) |
d6ca1416 JB |
640 | } |
641 | } | |
642 | ||
643 | private unsetTaskStealing (): void { | |
644 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 645 | this.workerNodes[workerNodeKey].off( |
65542a35 | 646 | 'idleWorkerNode', |
e1c2dba7 | 647 | this.handleIdleWorkerNodeEvent |
9f95d5eb | 648 | ) |
d6ca1416 JB |
649 | } |
650 | } | |
651 | ||
652 | private setTasksStealingOnBackPressure (): void { | |
653 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 654 | this.workerNodes[workerNodeKey].on( |
b5e75be8 | 655 | 'backPressure', |
e1c2dba7 | 656 | this.handleBackPressureEvent |
9f95d5eb | 657 | ) |
d6ca1416 JB |
658 | } |
659 | } | |
660 | ||
661 | private unsetTasksStealingOnBackPressure (): void { | |
662 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 663 | this.workerNodes[workerNodeKey].off( |
b5e75be8 | 664 | 'backPressure', |
e1c2dba7 | 665 | this.handleBackPressureEvent |
9f95d5eb | 666 | ) |
d6ca1416 JB |
667 | } |
668 | } | |
669 | ||
c319c66b JB |
670 | /** |
671 | * Whether the pool is full or not. | |
672 | * | |
673 | * The pool filling boolean status. | |
674 | */ | |
dea903a8 JB |
675 | protected get full (): boolean { |
676 | return this.workerNodes.length >= this.maxSize | |
677 | } | |
c2ade475 | 678 | |
c319c66b JB |
679 | /** |
680 | * Whether the pool is busy or not. | |
681 | * | |
682 | * The pool busyness boolean status. | |
683 | */ | |
684 | protected abstract get busy (): boolean | |
7c0ba920 | 685 | |
6c6afb84 | 686 | /** |
3d76750a | 687 | * Whether worker nodes are executing concurrently their tasks quota or not. |
6c6afb84 JB |
688 | * |
689 | * @returns Worker nodes busyness boolean status. | |
690 | */ | |
c2ade475 | 691 | protected internalBusy (): boolean { |
3d76750a JB |
692 | if (this.opts.enableTasksQueue === true) { |
693 | return ( | |
694 | this.workerNodes.findIndex( | |
041dc05b | 695 | workerNode => |
3d76750a JB |
696 | workerNode.info.ready && |
697 | workerNode.usage.tasks.executing < | |
698 | (this.opts.tasksQueueOptions?.concurrency as number) | |
699 | ) === -1 | |
700 | ) | |
3d76750a | 701 | } |
419e8121 JB |
702 | return ( |
703 | this.workerNodes.findIndex( | |
704 | workerNode => | |
705 | workerNode.info.ready && workerNode.usage.tasks.executing === 0 | |
706 | ) === -1 | |
707 | ) | |
cb70b19d JB |
708 | } |
709 | ||
42c677c1 JB |
710 | private isWorkerNodeBusy (workerNodeKey: number): boolean { |
711 | if (this.opts.enableTasksQueue === true) { | |
712 | return ( | |
713 | this.workerNodes[workerNodeKey].usage.tasks.executing >= | |
714 | (this.opts.tasksQueueOptions?.concurrency as number) | |
715 | ) | |
716 | } | |
717 | return this.workerNodes[workerNodeKey].usage.tasks.executing > 0 | |
718 | } | |
719 | ||
e81c38f2 | 720 | private async sendTaskFunctionOperationToWorker ( |
72ae84a2 JB |
721 | workerNodeKey: number, |
722 | message: MessageValue<Data> | |
723 | ): Promise<boolean> { | |
72ae84a2 | 724 | return await new Promise<boolean>((resolve, reject) => { |
ae036c3e JB |
725 | const taskFunctionOperationListener = ( |
726 | message: MessageValue<Response> | |
727 | ): void => { | |
728 | this.checkMessageWorkerId(message) | |
729 | const workerId = this.getWorkerInfo(workerNodeKey).id as number | |
72ae84a2 | 730 | if ( |
ae036c3e JB |
731 | message.taskFunctionOperationStatus != null && |
732 | message.workerId === workerId | |
72ae84a2 | 733 | ) { |
ae036c3e JB |
734 | if (message.taskFunctionOperationStatus) { |
735 | resolve(true) | |
736 | } else if (!message.taskFunctionOperationStatus) { | |
737 | reject( | |
738 | new Error( | |
739 | `Task function operation '${ | |
740 | message.taskFunctionOperation as string | |
741 | }' failed on worker ${message.workerId} with error: '${ | |
742 | message.workerError?.message as string | |
743 | }'` | |
744 | ) | |
72ae84a2 | 745 | ) |
ae036c3e JB |
746 | } |
747 | this.deregisterWorkerMessageListener( | |
748 | this.getWorkerNodeKeyByWorkerId(message.workerId), | |
749 | taskFunctionOperationListener | |
72ae84a2 JB |
750 | ) |
751 | } | |
ae036c3e JB |
752 | } |
753 | this.registerWorkerMessageListener( | |
754 | workerNodeKey, | |
755 | taskFunctionOperationListener | |
756 | ) | |
72ae84a2 JB |
757 | this.sendToWorker(workerNodeKey, message) |
758 | }) | |
759 | } | |
760 | ||
761 | private async sendTaskFunctionOperationToWorkers ( | |
adee6053 | 762 | message: MessageValue<Data> |
e81c38f2 JB |
763 | ): Promise<boolean> { |
764 | return await new Promise<boolean>((resolve, reject) => { | |
ae036c3e JB |
765 | const responsesReceived = new Array<MessageValue<Response>>() |
766 | const taskFunctionOperationsListener = ( | |
767 | message: MessageValue<Response> | |
768 | ): void => { | |
769 | this.checkMessageWorkerId(message) | |
770 | if (message.taskFunctionOperationStatus != null) { | |
771 | responsesReceived.push(message) | |
772 | if (responsesReceived.length === this.workerNodes.length) { | |
e81c38f2 | 773 | if ( |
e81c38f2 JB |
774 | responsesReceived.every( |
775 | message => message.taskFunctionOperationStatus === true | |
776 | ) | |
777 | ) { | |
778 | resolve(true) | |
779 | } else if ( | |
e81c38f2 JB |
780 | responsesReceived.some( |
781 | message => message.taskFunctionOperationStatus === false | |
782 | ) | |
783 | ) { | |
b0b55f57 JB |
784 | const errorResponse = responsesReceived.find( |
785 | response => response.taskFunctionOperationStatus === false | |
786 | ) | |
e81c38f2 JB |
787 | reject( |
788 | new Error( | |
b0b55f57 | 789 | `Task function operation '${ |
e81c38f2 | 790 | message.taskFunctionOperation as string |
b0b55f57 JB |
791 | }' failed on worker ${ |
792 | errorResponse?.workerId as number | |
793 | } with error: '${ | |
794 | errorResponse?.workerError?.message as string | |
795 | }'` | |
e81c38f2 JB |
796 | ) |
797 | ) | |
798 | } | |
ae036c3e JB |
799 | this.deregisterWorkerMessageListener( |
800 | this.getWorkerNodeKeyByWorkerId(message.workerId), | |
801 | taskFunctionOperationsListener | |
802 | ) | |
e81c38f2 | 803 | } |
ae036c3e JB |
804 | } |
805 | } | |
806 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
807 | this.registerWorkerMessageListener( | |
808 | workerNodeKey, | |
809 | taskFunctionOperationsListener | |
810 | ) | |
72ae84a2 | 811 | this.sendToWorker(workerNodeKey, message) |
e81c38f2 JB |
812 | } |
813 | }) | |
6703b9f4 JB |
814 | } |
815 | ||
816 | /** @inheritDoc */ | |
817 | public hasTaskFunction (name: string): boolean { | |
edbc15c6 JB |
818 | for (const workerNode of this.workerNodes) { |
819 | if ( | |
820 | Array.isArray(workerNode.info.taskFunctionNames) && | |
821 | workerNode.info.taskFunctionNames.includes(name) | |
822 | ) { | |
823 | return true | |
824 | } | |
825 | } | |
826 | return false | |
6703b9f4 JB |
827 | } |
828 | ||
829 | /** @inheritDoc */ | |
e81c38f2 JB |
830 | public async addTaskFunction ( |
831 | name: string, | |
3feeab69 | 832 | fn: TaskFunction<Data, Response> |
e81c38f2 | 833 | ): Promise<boolean> { |
3feeab69 JB |
834 | if (typeof name !== 'string') { |
835 | throw new TypeError('name argument must be a string') | |
836 | } | |
837 | if (typeof name === 'string' && name.trim().length === 0) { | |
838 | throw new TypeError('name argument must not be an empty string') | |
839 | } | |
840 | if (typeof fn !== 'function') { | |
841 | throw new TypeError('fn argument must be a function') | |
842 | } | |
adee6053 | 843 | const opResult = await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
844 | taskFunctionOperation: 'add', |
845 | taskFunctionName: name, | |
3feeab69 | 846 | taskFunction: fn.toString() |
6703b9f4 | 847 | }) |
adee6053 JB |
848 | this.taskFunctions.set(name, fn) |
849 | return opResult | |
6703b9f4 JB |
850 | } |
851 | ||
852 | /** @inheritDoc */ | |
e81c38f2 | 853 | public async removeTaskFunction (name: string): Promise<boolean> { |
9eae3c69 JB |
854 | if (!this.taskFunctions.has(name)) { |
855 | throw new Error( | |
16248b23 | 856 | 'Cannot remove a task function not handled on the pool side' |
9eae3c69 JB |
857 | ) |
858 | } | |
adee6053 | 859 | const opResult = await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
860 | taskFunctionOperation: 'remove', |
861 | taskFunctionName: name | |
862 | }) | |
adee6053 JB |
863 | this.deleteTaskFunctionWorkerUsages(name) |
864 | this.taskFunctions.delete(name) | |
865 | return opResult | |
6703b9f4 JB |
866 | } |
867 | ||
90d7d101 | 868 | /** @inheritDoc */ |
6703b9f4 | 869 | public listTaskFunctionNames (): string[] { |
f2dbbf95 JB |
870 | for (const workerNode of this.workerNodes) { |
871 | if ( | |
6703b9f4 JB |
872 | Array.isArray(workerNode.info.taskFunctionNames) && |
873 | workerNode.info.taskFunctionNames.length > 0 | |
f2dbbf95 | 874 | ) { |
6703b9f4 | 875 | return workerNode.info.taskFunctionNames |
f2dbbf95 | 876 | } |
90d7d101 | 877 | } |
f2dbbf95 | 878 | return [] |
90d7d101 JB |
879 | } |
880 | ||
6703b9f4 | 881 | /** @inheritDoc */ |
e81c38f2 | 882 | public async setDefaultTaskFunction (name: string): Promise<boolean> { |
72ae84a2 | 883 | return await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
884 | taskFunctionOperation: 'default', |
885 | taskFunctionName: name | |
886 | }) | |
6703b9f4 JB |
887 | } |
888 | ||
adee6053 JB |
889 | private deleteTaskFunctionWorkerUsages (name: string): void { |
890 | for (const workerNode of this.workerNodes) { | |
891 | workerNode.deleteTaskFunctionWorkerUsage(name) | |
892 | } | |
893 | } | |
894 | ||
375f7504 JB |
895 | private shallExecuteTask (workerNodeKey: number): boolean { |
896 | return ( | |
897 | this.tasksQueueSize(workerNodeKey) === 0 && | |
898 | this.workerNodes[workerNodeKey].usage.tasks.executing < | |
899 | (this.opts.tasksQueueOptions?.concurrency as number) | |
900 | ) | |
901 | } | |
902 | ||
afc003b2 | 903 | /** @inheritDoc */ |
7d91a8cd JB |
904 | public async execute ( |
905 | data?: Data, | |
906 | name?: string, | |
907 | transferList?: TransferListItem[] | |
908 | ): Promise<Response> { | |
52b71763 | 909 | return await new Promise<Response>((resolve, reject) => { |
15b176e0 | 910 | if (!this.started) { |
47352846 | 911 | reject(new Error('Cannot execute a task on not started pool')) |
9d2d0da1 | 912 | return |
15b176e0 | 913 | } |
711623b8 JB |
914 | if (this.destroying) { |
915 | reject(new Error('Cannot execute a task on destroying pool')) | |
916 | return | |
917 | } | |
7d91a8cd JB |
918 | if (name != null && typeof name !== 'string') { |
919 | reject(new TypeError('name argument must be a string')) | |
9d2d0da1 | 920 | return |
7d91a8cd | 921 | } |
90d7d101 JB |
922 | if ( |
923 | name != null && | |
924 | typeof name === 'string' && | |
925 | name.trim().length === 0 | |
926 | ) { | |
f58b60b9 | 927 | reject(new TypeError('name argument must not be an empty string')) |
9d2d0da1 | 928 | return |
90d7d101 | 929 | } |
b558f6b5 JB |
930 | if (transferList != null && !Array.isArray(transferList)) { |
931 | reject(new TypeError('transferList argument must be an array')) | |
9d2d0da1 | 932 | return |
b558f6b5 JB |
933 | } |
934 | const timestamp = performance.now() | |
935 | const workerNodeKey = this.chooseWorkerNode() | |
501aea93 | 936 | const task: Task<Data> = { |
52b71763 JB |
937 | name: name ?? DEFAULT_TASK_NAME, |
938 | // eslint-disable-next-line @typescript-eslint/consistent-type-assertions | |
939 | data: data ?? ({} as Data), | |
7d91a8cd | 940 | transferList, |
52b71763 | 941 | timestamp, |
7629bdf1 | 942 | taskId: randomUUID() |
52b71763 | 943 | } |
7629bdf1 | 944 | this.promiseResponseMap.set(task.taskId as string, { |
2e81254d JB |
945 | resolve, |
946 | reject, | |
f18fd12b JB |
947 | workerNodeKey, |
948 | ...(this.emitter != null && { | |
949 | asyncResource: new AsyncResource('poolifier:task', { | |
950 | triggerAsyncId: this.emitter.asyncId, | |
951 | requireManualDestroy: true | |
952 | }) | |
953 | }) | |
2e81254d | 954 | }) |
52b71763 | 955 | if ( |
4e377863 JB |
956 | this.opts.enableTasksQueue === false || |
957 | (this.opts.enableTasksQueue === true && | |
375f7504 | 958 | this.shallExecuteTask(workerNodeKey)) |
52b71763 | 959 | ) { |
501aea93 | 960 | this.executeTask(workerNodeKey, task) |
4e377863 JB |
961 | } else { |
962 | this.enqueueTask(workerNodeKey, task) | |
52b71763 | 963 | } |
2e81254d | 964 | }) |
280c2a77 | 965 | } |
c97c7edb | 966 | |
47352846 JB |
967 | /** @inheritdoc */ |
968 | public start (): void { | |
711623b8 JB |
969 | if (this.started) { |
970 | throw new Error('Cannot start an already started pool') | |
971 | } | |
972 | if (this.starting) { | |
973 | throw new Error('Cannot start an already starting pool') | |
974 | } | |
975 | if (this.destroying) { | |
976 | throw new Error('Cannot start a destroying pool') | |
977 | } | |
47352846 JB |
978 | this.starting = true |
979 | while ( | |
980 | this.workerNodes.reduce( | |
981 | (accumulator, workerNode) => | |
982 | !workerNode.info.dynamic ? accumulator + 1 : accumulator, | |
983 | 0 | |
984 | ) < this.numberOfWorkers | |
985 | ) { | |
986 | this.createAndSetupWorkerNode() | |
987 | } | |
988 | this.starting = false | |
989 | this.started = true | |
990 | } | |
991 | ||
afc003b2 | 992 | /** @inheritDoc */ |
c97c7edb | 993 | public async destroy (): Promise<void> { |
711623b8 JB |
994 | if (!this.started) { |
995 | throw new Error('Cannot destroy an already destroyed pool') | |
996 | } | |
997 | if (this.starting) { | |
998 | throw new Error('Cannot destroy an starting pool') | |
999 | } | |
1000 | if (this.destroying) { | |
1001 | throw new Error('Cannot destroy an already destroying pool') | |
1002 | } | |
1003 | this.destroying = true | |
1fbcaa7c | 1004 | await Promise.all( |
14c39df1 | 1005 | this.workerNodes.map(async (_workerNode, workerNodeKey) => { |
aa9eede8 | 1006 | await this.destroyWorkerNode(workerNodeKey) |
1fbcaa7c JB |
1007 | }) |
1008 | ) | |
33e6bb4c | 1009 | this.emitter?.emit(PoolEvents.destroy, this.info) |
f80125ca | 1010 | this.emitter?.emitDestroy() |
78f60f82 | 1011 | this.emitter?.removeAllListeners() |
55082af9 | 1012 | this.readyEventEmitted = false |
711623b8 | 1013 | this.destroying = false |
15b176e0 | 1014 | this.started = false |
c97c7edb S |
1015 | } |
1016 | ||
1e3214b6 | 1017 | protected async sendKillMessageToWorker ( |
72ae84a2 | 1018 | workerNodeKey: number |
1e3214b6 | 1019 | ): Promise<void> { |
9edb9717 | 1020 | await new Promise<void>((resolve, reject) => { |
ae036c3e JB |
1021 | const killMessageListener = (message: MessageValue<Response>): void => { |
1022 | this.checkMessageWorkerId(message) | |
1e3214b6 JB |
1023 | if (message.kill === 'success') { |
1024 | resolve() | |
1025 | } else if (message.kill === 'failure') { | |
72ae84a2 JB |
1026 | reject( |
1027 | new Error( | |
ae036c3e | 1028 | `Kill message handling failed on worker ${ |
72ae84a2 | 1029 | message.workerId as number |
ae036c3e | 1030 | }` |
72ae84a2 JB |
1031 | ) |
1032 | ) | |
1e3214b6 | 1033 | } |
ae036c3e | 1034 | } |
51d9cfbd | 1035 | // FIXME: should be registered only once |
ae036c3e | 1036 | this.registerWorkerMessageListener(workerNodeKey, killMessageListener) |
72ae84a2 | 1037 | this.sendToWorker(workerNodeKey, { kill: true }) |
1e3214b6 | 1038 | }) |
1e3214b6 JB |
1039 | } |
1040 | ||
4a6952ff | 1041 | /** |
aa9eede8 | 1042 | * Terminates the worker node given its worker node key. |
4a6952ff | 1043 | * |
aa9eede8 | 1044 | * @param workerNodeKey - The worker node key. |
4a6952ff | 1045 | */ |
81c02522 | 1046 | protected abstract destroyWorkerNode (workerNodeKey: number): Promise<void> |
c97c7edb | 1047 | |
729c563d | 1048 | /** |
6677a3d3 JB |
1049 | * Setup hook to execute code before worker nodes are created in the abstract constructor. |
1050 | * Can be overridden. | |
afc003b2 JB |
1051 | * |
1052 | * @virtual | |
729c563d | 1053 | */ |
280c2a77 | 1054 | protected setupHook (): void { |
965df41c | 1055 | /* Intentionally empty */ |
280c2a77 | 1056 | } |
c97c7edb | 1057 | |
729c563d | 1058 | /** |
280c2a77 S |
1059 | * Should return whether the worker is the main worker or not. |
1060 | */ | |
1061 | protected abstract isMain (): boolean | |
1062 | ||
1063 | /** | |
2e81254d | 1064 | * Hook executed before the worker task execution. |
bf9549ae | 1065 | * Can be overridden. |
729c563d | 1066 | * |
f06e48d8 | 1067 | * @param workerNodeKey - The worker node key. |
1c6fe997 | 1068 | * @param task - The task to execute. |
729c563d | 1069 | */ |
1c6fe997 JB |
1070 | protected beforeTaskExecutionHook ( |
1071 | workerNodeKey: number, | |
1072 | task: Task<Data> | |
1073 | ): void { | |
94407def JB |
1074 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
1075 | const workerUsage = this.workerNodes[workerNodeKey].usage | |
1076 | ++workerUsage.tasks.executing | |
1077 | this.updateWaitTimeWorkerUsage(workerUsage, task) | |
1078 | } | |
1079 | if ( | |
1080 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1081 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage( | |
1082 | task.name as string | |
1083 | ) != null | |
1084 | ) { | |
db0e38ee | 1085 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 1086 | workerNodeKey |
db0e38ee | 1087 | ].getTaskFunctionWorkerUsage(task.name as string) as WorkerUsage |
5623b8d5 JB |
1088 | ++taskFunctionWorkerUsage.tasks.executing |
1089 | this.updateWaitTimeWorkerUsage(taskFunctionWorkerUsage, task) | |
b558f6b5 | 1090 | } |
c97c7edb S |
1091 | } |
1092 | ||
c01733f1 | 1093 | /** |
2e81254d | 1094 | * Hook executed after the worker task execution. |
bf9549ae | 1095 | * Can be overridden. |
c01733f1 | 1096 | * |
501aea93 | 1097 | * @param workerNodeKey - The worker node key. |
38e795c1 | 1098 | * @param message - The received message. |
c01733f1 | 1099 | */ |
2e81254d | 1100 | protected afterTaskExecutionHook ( |
501aea93 | 1101 | workerNodeKey: number, |
2740a743 | 1102 | message: MessageValue<Response> |
bf9549ae | 1103 | ): void { |
94407def JB |
1104 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
1105 | const workerUsage = this.workerNodes[workerNodeKey].usage | |
1106 | this.updateTaskStatisticsWorkerUsage(workerUsage, message) | |
1107 | this.updateRunTimeWorkerUsage(workerUsage, message) | |
1108 | this.updateEluWorkerUsage(workerUsage, message) | |
1109 | } | |
1110 | if ( | |
1111 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1112 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage( | |
5623b8d5 | 1113 | message.taskPerformance?.name as string |
94407def JB |
1114 | ) != null |
1115 | ) { | |
db0e38ee | 1116 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 1117 | workerNodeKey |
db0e38ee | 1118 | ].getTaskFunctionWorkerUsage( |
0628755c | 1119 | message.taskPerformance?.name as string |
b558f6b5 | 1120 | ) as WorkerUsage |
db0e38ee JB |
1121 | this.updateTaskStatisticsWorkerUsage(taskFunctionWorkerUsage, message) |
1122 | this.updateRunTimeWorkerUsage(taskFunctionWorkerUsage, message) | |
1123 | this.updateEluWorkerUsage(taskFunctionWorkerUsage, message) | |
b558f6b5 JB |
1124 | } |
1125 | } | |
1126 | ||
db0e38ee JB |
1127 | /** |
1128 | * Whether the worker node shall update its task function worker usage or not. | |
1129 | * | |
1130 | * @param workerNodeKey - The worker node key. | |
1131 | * @returns `true` if the worker node shall update its task function worker usage, `false` otherwise. | |
1132 | */ | |
1133 | private shallUpdateTaskFunctionWorkerUsage (workerNodeKey: number): boolean { | |
a5d15204 | 1134 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
b558f6b5 | 1135 | return ( |
94407def | 1136 | workerInfo != null && |
6703b9f4 JB |
1137 | Array.isArray(workerInfo.taskFunctionNames) && |
1138 | workerInfo.taskFunctionNames.length > 2 | |
b558f6b5 | 1139 | ) |
f1c06930 JB |
1140 | } |
1141 | ||
1142 | private updateTaskStatisticsWorkerUsage ( | |
1143 | workerUsage: WorkerUsage, | |
1144 | message: MessageValue<Response> | |
1145 | ): void { | |
a4e07f72 | 1146 | const workerTaskStatistics = workerUsage.tasks |
5bb5be17 JB |
1147 | if ( |
1148 | workerTaskStatistics.executing != null && | |
1149 | workerTaskStatistics.executing > 0 | |
1150 | ) { | |
1151 | --workerTaskStatistics.executing | |
5bb5be17 | 1152 | } |
6703b9f4 | 1153 | if (message.workerError == null) { |
98e72cda JB |
1154 | ++workerTaskStatistics.executed |
1155 | } else { | |
a4e07f72 | 1156 | ++workerTaskStatistics.failed |
2740a743 | 1157 | } |
f8eb0a2a JB |
1158 | } |
1159 | ||
a4e07f72 JB |
1160 | private updateRunTimeWorkerUsage ( |
1161 | workerUsage: WorkerUsage, | |
f8eb0a2a JB |
1162 | message: MessageValue<Response> |
1163 | ): void { | |
6703b9f4 | 1164 | if (message.workerError != null) { |
dc021bcc JB |
1165 | return |
1166 | } | |
e4f20deb JB |
1167 | updateMeasurementStatistics( |
1168 | workerUsage.runTime, | |
1169 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime, | |
dc021bcc | 1170 | message.taskPerformance?.runTime ?? 0 |
e4f20deb | 1171 | ) |
f8eb0a2a JB |
1172 | } |
1173 | ||
a4e07f72 JB |
1174 | private updateWaitTimeWorkerUsage ( |
1175 | workerUsage: WorkerUsage, | |
1c6fe997 | 1176 | task: Task<Data> |
f8eb0a2a | 1177 | ): void { |
1c6fe997 JB |
1178 | const timestamp = performance.now() |
1179 | const taskWaitTime = timestamp - (task.timestamp ?? timestamp) | |
e4f20deb JB |
1180 | updateMeasurementStatistics( |
1181 | workerUsage.waitTime, | |
1182 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime, | |
dc021bcc | 1183 | taskWaitTime |
e4f20deb | 1184 | ) |
c01733f1 | 1185 | } |
1186 | ||
a4e07f72 | 1187 | private updateEluWorkerUsage ( |
5df69fab | 1188 | workerUsage: WorkerUsage, |
62c15a68 JB |
1189 | message: MessageValue<Response> |
1190 | ): void { | |
6703b9f4 | 1191 | if (message.workerError != null) { |
dc021bcc JB |
1192 | return |
1193 | } | |
008512c7 JB |
1194 | const eluTaskStatisticsRequirements: MeasurementStatisticsRequirements = |
1195 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu | |
e4f20deb JB |
1196 | updateMeasurementStatistics( |
1197 | workerUsage.elu.active, | |
008512c7 | 1198 | eluTaskStatisticsRequirements, |
dc021bcc | 1199 | message.taskPerformance?.elu?.active ?? 0 |
e4f20deb JB |
1200 | ) |
1201 | updateMeasurementStatistics( | |
1202 | workerUsage.elu.idle, | |
008512c7 | 1203 | eluTaskStatisticsRequirements, |
dc021bcc | 1204 | message.taskPerformance?.elu?.idle ?? 0 |
e4f20deb | 1205 | ) |
008512c7 | 1206 | if (eluTaskStatisticsRequirements.aggregate) { |
f7510105 | 1207 | if (message.taskPerformance?.elu != null) { |
f7510105 JB |
1208 | if (workerUsage.elu.utilization != null) { |
1209 | workerUsage.elu.utilization = | |
1210 | (workerUsage.elu.utilization + | |
1211 | message.taskPerformance.elu.utilization) / | |
1212 | 2 | |
1213 | } else { | |
1214 | workerUsage.elu.utilization = message.taskPerformance.elu.utilization | |
1215 | } | |
62c15a68 JB |
1216 | } |
1217 | } | |
1218 | } | |
1219 | ||
280c2a77 | 1220 | /** |
f06e48d8 | 1221 | * Chooses a worker node for the next task. |
280c2a77 | 1222 | * |
6c6afb84 | 1223 | * The default worker choice strategy uses a round robin algorithm to distribute the tasks. |
280c2a77 | 1224 | * |
aa9eede8 | 1225 | * @returns The chosen worker node key |
280c2a77 | 1226 | */ |
6c6afb84 | 1227 | private chooseWorkerNode (): number { |
930dcf12 | 1228 | if (this.shallCreateDynamicWorker()) { |
aa9eede8 | 1229 | const workerNodeKey = this.createAndSetupDynamicWorkerNode() |
6c6afb84 | 1230 | if ( |
b1aae695 | 1231 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage |
6c6afb84 | 1232 | ) { |
aa9eede8 | 1233 | return workerNodeKey |
6c6afb84 | 1234 | } |
17393ac8 | 1235 | } |
930dcf12 JB |
1236 | return this.workerChoiceStrategyContext.execute() |
1237 | } | |
1238 | ||
6c6afb84 JB |
1239 | /** |
1240 | * Conditions for dynamic worker creation. | |
1241 | * | |
1242 | * @returns Whether to create a dynamic worker or not. | |
1243 | */ | |
1244 | private shallCreateDynamicWorker (): boolean { | |
930dcf12 | 1245 | return this.type === PoolTypes.dynamic && !this.full && this.internalBusy() |
c97c7edb S |
1246 | } |
1247 | ||
280c2a77 | 1248 | /** |
aa9eede8 | 1249 | * Sends a message to worker given its worker node key. |
280c2a77 | 1250 | * |
aa9eede8 | 1251 | * @param workerNodeKey - The worker node key. |
38e795c1 | 1252 | * @param message - The message. |
7d91a8cd | 1253 | * @param transferList - The optional array of transferable objects. |
280c2a77 S |
1254 | */ |
1255 | protected abstract sendToWorker ( | |
aa9eede8 | 1256 | workerNodeKey: number, |
7d91a8cd JB |
1257 | message: MessageValue<Data>, |
1258 | transferList?: TransferListItem[] | |
280c2a77 S |
1259 | ): void |
1260 | ||
729c563d | 1261 | /** |
41344292 | 1262 | * Creates a new worker. |
6c6afb84 JB |
1263 | * |
1264 | * @returns Newly created worker. | |
729c563d | 1265 | */ |
280c2a77 | 1266 | protected abstract createWorker (): Worker |
c97c7edb | 1267 | |
4a6952ff | 1268 | /** |
aa9eede8 | 1269 | * Creates a new, completely set up worker node. |
4a6952ff | 1270 | * |
aa9eede8 | 1271 | * @returns New, completely set up worker node key. |
4a6952ff | 1272 | */ |
aa9eede8 | 1273 | protected createAndSetupWorkerNode (): number { |
bdacc2d2 | 1274 | const worker = this.createWorker() |
280c2a77 | 1275 | |
fd04474e | 1276 | worker.on('online', this.opts.onlineHandler ?? EMPTY_FUNCTION) |
35cf1c03 | 1277 | worker.on('message', this.opts.messageHandler ?? EMPTY_FUNCTION) |
a35560ba | 1278 | worker.on('error', this.opts.errorHandler ?? EMPTY_FUNCTION) |
041dc05b | 1279 | worker.on('error', error => { |
aad6fb64 | 1280 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
23b11f60 | 1281 | this.flagWorkerNodeAsNotReady(workerNodeKey) |
46b0bb09 | 1282 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
2a69b8c5 | 1283 | this.emitter?.emit(PoolEvents.error, error) |
cce7d657 | 1284 | this.workerNodes[workerNodeKey].closeChannel() |
15b176e0 | 1285 | if ( |
b6bfca01 | 1286 | this.started && |
9b38ab2d | 1287 | !this.starting && |
711623b8 | 1288 | !this.destroying && |
9b38ab2d | 1289 | this.opts.restartWorkerOnError === true |
15b176e0 | 1290 | ) { |
9b106837 | 1291 | if (workerInfo.dynamic) { |
aa9eede8 | 1292 | this.createAndSetupDynamicWorkerNode() |
8a1260a3 | 1293 | } else { |
aa9eede8 | 1294 | this.createAndSetupWorkerNode() |
8a1260a3 | 1295 | } |
5baee0d7 | 1296 | } |
6d59c3a3 | 1297 | if (this.started && this.opts.enableTasksQueue === true) { |
9b106837 | 1298 | this.redistributeQueuedTasks(workerNodeKey) |
19dbc45b | 1299 | } |
5baee0d7 | 1300 | }) |
a35560ba | 1301 | worker.on('exit', this.opts.exitHandler ?? EMPTY_FUNCTION) |
a974afa6 | 1302 | worker.once('exit', () => { |
f06e48d8 | 1303 | this.removeWorkerNode(worker) |
a974afa6 | 1304 | }) |
280c2a77 | 1305 | |
aa9eede8 | 1306 | const workerNodeKey = this.addWorkerNode(worker) |
280c2a77 | 1307 | |
aa9eede8 | 1308 | this.afterWorkerNodeSetup(workerNodeKey) |
280c2a77 | 1309 | |
aa9eede8 | 1310 | return workerNodeKey |
c97c7edb | 1311 | } |
be0676b3 | 1312 | |
930dcf12 | 1313 | /** |
aa9eede8 | 1314 | * Creates a new, completely set up dynamic worker node. |
930dcf12 | 1315 | * |
aa9eede8 | 1316 | * @returns New, completely set up dynamic worker node key. |
930dcf12 | 1317 | */ |
aa9eede8 JB |
1318 | protected createAndSetupDynamicWorkerNode (): number { |
1319 | const workerNodeKey = this.createAndSetupWorkerNode() | |
041dc05b | 1320 | this.registerWorkerMessageListener(workerNodeKey, message => { |
4d159167 | 1321 | this.checkMessageWorkerId(message) |
aa9eede8 JB |
1322 | const localWorkerNodeKey = this.getWorkerNodeKeyByWorkerId( |
1323 | message.workerId | |
aad6fb64 | 1324 | ) |
aa9eede8 | 1325 | const workerUsage = this.workerNodes[localWorkerNodeKey].usage |
81c02522 | 1326 | // Kill message received from worker |
930dcf12 JB |
1327 | if ( |
1328 | isKillBehavior(KillBehaviors.HARD, message.kill) || | |
1e3214b6 | 1329 | (isKillBehavior(KillBehaviors.SOFT, message.kill) && |
7b56f532 | 1330 | ((this.opts.enableTasksQueue === false && |
aa9eede8 | 1331 | workerUsage.tasks.executing === 0) || |
7b56f532 | 1332 | (this.opts.enableTasksQueue === true && |
aa9eede8 JB |
1333 | workerUsage.tasks.executing === 0 && |
1334 | this.tasksQueueSize(localWorkerNodeKey) === 0))) | |
930dcf12 | 1335 | ) { |
f3827d5d | 1336 | // Flag the worker node as not ready immediately |
ae3ab61d | 1337 | this.flagWorkerNodeAsNotReady(localWorkerNodeKey) |
041dc05b | 1338 | this.destroyWorkerNode(localWorkerNodeKey).catch(error => { |
5270d253 JB |
1339 | this.emitter?.emit(PoolEvents.error, error) |
1340 | }) | |
930dcf12 JB |
1341 | } |
1342 | }) | |
46b0bb09 | 1343 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
aa9eede8 | 1344 | this.sendToWorker(workerNodeKey, { |
e9dd5b66 | 1345 | checkActive: true |
21f710aa | 1346 | }) |
72ae84a2 JB |
1347 | if (this.taskFunctions.size > 0) { |
1348 | for (const [taskFunctionName, taskFunction] of this.taskFunctions) { | |
1349 | this.sendTaskFunctionOperationToWorker(workerNodeKey, { | |
1350 | taskFunctionOperation: 'add', | |
1351 | taskFunctionName, | |
1352 | taskFunction: taskFunction.toString() | |
1353 | }).catch(error => { | |
1354 | this.emitter?.emit(PoolEvents.error, error) | |
1355 | }) | |
1356 | } | |
1357 | } | |
b5e113f6 | 1358 | workerInfo.dynamic = true |
b1aae695 JB |
1359 | if ( |
1360 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady || | |
1361 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage | |
1362 | ) { | |
b5e113f6 JB |
1363 | workerInfo.ready = true |
1364 | } | |
33e6bb4c | 1365 | this.checkAndEmitDynamicWorkerCreationEvents() |
aa9eede8 | 1366 | return workerNodeKey |
930dcf12 JB |
1367 | } |
1368 | ||
a2ed5053 | 1369 | /** |
aa9eede8 | 1370 | * Registers a listener callback on the worker given its worker node key. |
a2ed5053 | 1371 | * |
aa9eede8 | 1372 | * @param workerNodeKey - The worker node key. |
a2ed5053 JB |
1373 | * @param listener - The message listener callback. |
1374 | */ | |
85aeb3f3 JB |
1375 | protected abstract registerWorkerMessageListener< |
1376 | Message extends Data | Response | |
aa9eede8 JB |
1377 | >( |
1378 | workerNodeKey: number, | |
1379 | listener: (message: MessageValue<Message>) => void | |
1380 | ): void | |
a2ed5053 | 1381 | |
ae036c3e JB |
1382 | /** |
1383 | * Registers once a listener callback on the worker given its worker node key. | |
1384 | * | |
1385 | * @param workerNodeKey - The worker node key. | |
1386 | * @param listener - The message listener callback. | |
1387 | */ | |
1388 | protected abstract registerOnceWorkerMessageListener< | |
1389 | Message extends Data | Response | |
1390 | >( | |
1391 | workerNodeKey: number, | |
1392 | listener: (message: MessageValue<Message>) => void | |
1393 | ): void | |
1394 | ||
1395 | /** | |
1396 | * Deregisters a listener callback on the worker given its worker node key. | |
1397 | * | |
1398 | * @param workerNodeKey - The worker node key. | |
1399 | * @param listener - The message listener callback. | |
1400 | */ | |
1401 | protected abstract deregisterWorkerMessageListener< | |
1402 | Message extends Data | Response | |
1403 | >( | |
1404 | workerNodeKey: number, | |
1405 | listener: (message: MessageValue<Message>) => void | |
1406 | ): void | |
1407 | ||
a2ed5053 | 1408 | /** |
aa9eede8 | 1409 | * Method hooked up after a worker node has been newly created. |
a2ed5053 JB |
1410 | * Can be overridden. |
1411 | * | |
aa9eede8 | 1412 | * @param workerNodeKey - The newly created worker node key. |
a2ed5053 | 1413 | */ |
aa9eede8 | 1414 | protected afterWorkerNodeSetup (workerNodeKey: number): void { |
a2ed5053 | 1415 | // Listen to worker messages. |
fcd39179 JB |
1416 | this.registerWorkerMessageListener( |
1417 | workerNodeKey, | |
3a776b6d | 1418 | this.workerMessageListener |
fcd39179 | 1419 | ) |
85aeb3f3 | 1420 | // Send the startup message to worker. |
aa9eede8 | 1421 | this.sendStartupMessageToWorker(workerNodeKey) |
9edb9717 JB |
1422 | // Send the statistics message to worker. |
1423 | this.sendStatisticsMessageToWorker(workerNodeKey) | |
72695f86 | 1424 | if (this.opts.enableTasksQueue === true) { |
dbd73092 | 1425 | if (this.opts.tasksQueueOptions?.taskStealing === true) { |
e1c2dba7 | 1426 | this.workerNodes[workerNodeKey].on( |
65542a35 | 1427 | 'idleWorkerNode', |
e1c2dba7 | 1428 | this.handleIdleWorkerNodeEvent |
9f95d5eb | 1429 | ) |
47352846 JB |
1430 | } |
1431 | if (this.opts.tasksQueueOptions?.tasksStealingOnBackPressure === true) { | |
e1c2dba7 | 1432 | this.workerNodes[workerNodeKey].on( |
b5e75be8 | 1433 | 'backPressure', |
e1c2dba7 | 1434 | this.handleBackPressureEvent |
9f95d5eb | 1435 | ) |
47352846 | 1436 | } |
72695f86 | 1437 | } |
d2c73f82 JB |
1438 | } |
1439 | ||
85aeb3f3 | 1440 | /** |
aa9eede8 JB |
1441 | * Sends the startup message to worker given its worker node key. |
1442 | * | |
1443 | * @param workerNodeKey - The worker node key. | |
1444 | */ | |
1445 | protected abstract sendStartupMessageToWorker (workerNodeKey: number): void | |
1446 | ||
1447 | /** | |
9edb9717 | 1448 | * Sends the statistics message to worker given its worker node key. |
85aeb3f3 | 1449 | * |
aa9eede8 | 1450 | * @param workerNodeKey - The worker node key. |
85aeb3f3 | 1451 | */ |
9edb9717 | 1452 | private sendStatisticsMessageToWorker (workerNodeKey: number): void { |
aa9eede8 JB |
1453 | this.sendToWorker(workerNodeKey, { |
1454 | statistics: { | |
1455 | runTime: | |
1456 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
1457 | .runTime.aggregate, | |
1458 | elu: this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
1459 | .elu.aggregate | |
72ae84a2 | 1460 | } |
aa9eede8 JB |
1461 | }) |
1462 | } | |
a2ed5053 | 1463 | |
42c677c1 JB |
1464 | private handleTask (workerNodeKey: number, task: Task<Data>): void { |
1465 | if (this.shallExecuteTask(workerNodeKey)) { | |
1466 | this.executeTask(workerNodeKey, task) | |
1467 | } else { | |
1468 | this.enqueueTask(workerNodeKey, task) | |
1469 | } | |
1470 | } | |
1471 | ||
a2ed5053 | 1472 | private redistributeQueuedTasks (workerNodeKey: number): void { |
cb71d660 JB |
1473 | if (this.workerNodes.length <= 1) { |
1474 | return | |
1475 | } | |
a2ed5053 | 1476 | while (this.tasksQueueSize(workerNodeKey) > 0) { |
f201a0cd JB |
1477 | const destinationWorkerNodeKey = this.workerNodes.reduce( |
1478 | (minWorkerNodeKey, workerNode, workerNodeKey, workerNodes) => { | |
852ed3e4 JB |
1479 | return workerNode.info.ready && |
1480 | workerNode.usage.tasks.queued < | |
1481 | workerNodes[minWorkerNodeKey].usage.tasks.queued | |
f201a0cd JB |
1482 | ? workerNodeKey |
1483 | : minWorkerNodeKey | |
1484 | }, | |
1485 | 0 | |
1486 | ) | |
42c677c1 JB |
1487 | this.handleTask( |
1488 | destinationWorkerNodeKey, | |
1489 | this.dequeueTask(workerNodeKey) as Task<Data> | |
1490 | ) | |
dd951876 JB |
1491 | } |
1492 | } | |
1493 | ||
b1838604 JB |
1494 | private updateTaskStolenStatisticsWorkerUsage ( |
1495 | workerNodeKey: number, | |
b1838604 JB |
1496 | taskName: string |
1497 | ): void { | |
1a880eca | 1498 | const workerNode = this.workerNodes[workerNodeKey] |
b1838604 JB |
1499 | if (workerNode?.usage != null) { |
1500 | ++workerNode.usage.tasks.stolen | |
1501 | } | |
1502 | if ( | |
1503 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1504 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1505 | ) { | |
1506 | const taskFunctionWorkerUsage = workerNode.getTaskFunctionWorkerUsage( | |
1507 | taskName | |
1508 | ) as WorkerUsage | |
1509 | ++taskFunctionWorkerUsage.tasks.stolen | |
1510 | } | |
1511 | } | |
1512 | ||
463226a4 | 1513 | private updateTaskSequentiallyStolenStatisticsWorkerUsage ( |
f1f77f45 | 1514 | workerNodeKey: number |
463226a4 JB |
1515 | ): void { |
1516 | const workerNode = this.workerNodes[workerNodeKey] | |
1517 | if (workerNode?.usage != null) { | |
1518 | ++workerNode.usage.tasks.sequentiallyStolen | |
1519 | } | |
f1f77f45 JB |
1520 | } |
1521 | ||
1522 | private updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage ( | |
1523 | workerNodeKey: number, | |
1524 | taskName: string | |
1525 | ): void { | |
1526 | const workerNode = this.workerNodes[workerNodeKey] | |
463226a4 JB |
1527 | if ( |
1528 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1529 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1530 | ) { | |
1531 | const taskFunctionWorkerUsage = workerNode.getTaskFunctionWorkerUsage( | |
1532 | taskName | |
1533 | ) as WorkerUsage | |
1534 | ++taskFunctionWorkerUsage.tasks.sequentiallyStolen | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | private resetTaskSequentiallyStolenStatisticsWorkerUsage ( | |
f1f77f45 | 1539 | workerNodeKey: number |
463226a4 JB |
1540 | ): void { |
1541 | const workerNode = this.workerNodes[workerNodeKey] | |
1542 | if (workerNode?.usage != null) { | |
1543 | workerNode.usage.tasks.sequentiallyStolen = 0 | |
1544 | } | |
f1f77f45 JB |
1545 | } |
1546 | ||
1547 | private resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage ( | |
1548 | workerNodeKey: number, | |
1549 | taskName: string | |
1550 | ): void { | |
1551 | const workerNode = this.workerNodes[workerNodeKey] | |
463226a4 JB |
1552 | if ( |
1553 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1554 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1555 | ) { | |
1556 | const taskFunctionWorkerUsage = workerNode.getTaskFunctionWorkerUsage( | |
1557 | taskName | |
1558 | ) as WorkerUsage | |
1559 | taskFunctionWorkerUsage.tasks.sequentiallyStolen = 0 | |
1560 | } | |
1561 | } | |
1562 | ||
65542a35 | 1563 | private readonly handleIdleWorkerNodeEvent = ( |
e1c2dba7 | 1564 | eventDetail: WorkerNodeEventDetail, |
463226a4 | 1565 | previousStolenTask?: Task<Data> |
9f95d5eb | 1566 | ): void => { |
cb71d660 JB |
1567 | if (this.workerNodes.length <= 1) { |
1568 | return | |
1569 | } | |
e1c2dba7 | 1570 | const { workerNodeKey } = eventDetail |
463226a4 JB |
1571 | if (workerNodeKey == null) { |
1572 | throw new Error( | |
1573 | 'WorkerNode event detail workerNodeKey attribute must be defined' | |
1574 | ) | |
1575 | } | |
1576 | const workerNodeTasksUsage = this.workerNodes[workerNodeKey].usage.tasks | |
1577 | if ( | |
1578 | previousStolenTask != null && | |
1579 | workerNodeTasksUsage.sequentiallyStolen > 0 && | |
1580 | (workerNodeTasksUsage.executing > 0 || | |
1581 | this.tasksQueueSize(workerNodeKey) > 0) | |
1582 | ) { | |
f1f77f45 JB |
1583 | for (const taskName of this.workerNodes[workerNodeKey].info |
1584 | .taskFunctionNames as string[]) { | |
1585 | this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( | |
1586 | workerNodeKey, | |
1587 | taskName | |
1588 | ) | |
1589 | } | |
1590 | this.resetTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey) | |
463226a4 JB |
1591 | return |
1592 | } | |
1593 | const stolenTask = this.workerNodeStealTask(workerNodeKey) | |
f1f77f45 JB |
1594 | if ( |
1595 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1596 | stolenTask != null | |
1597 | ) { | |
1598 | const taskFunctionTasksWorkerUsage = this.workerNodes[ | |
1599 | workerNodeKey | |
1600 | ].getTaskFunctionWorkerUsage(stolenTask.name as string) | |
1601 | ?.tasks as TaskStatistics | |
1602 | if ( | |
1603 | taskFunctionTasksWorkerUsage.sequentiallyStolen === 0 || | |
1604 | (previousStolenTask != null && | |
1605 | previousStolenTask.name === stolenTask.name && | |
1606 | taskFunctionTasksWorkerUsage.sequentiallyStolen > 0) | |
1607 | ) { | |
1608 | this.updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( | |
1609 | workerNodeKey, | |
1610 | stolenTask.name as string | |
1611 | ) | |
1612 | } else { | |
1613 | this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( | |
1614 | workerNodeKey, | |
1615 | stolenTask.name as string | |
1616 | ) | |
1617 | } | |
1618 | } | |
463226a4 JB |
1619 | sleep(exponentialDelay(workerNodeTasksUsage.sequentiallyStolen)) |
1620 | .then(() => { | |
e1c2dba7 | 1621 | this.handleIdleWorkerNodeEvent(eventDetail, stolenTask) |
463226a4 JB |
1622 | return undefined |
1623 | }) | |
1624 | .catch(EMPTY_FUNCTION) | |
1625 | } | |
1626 | ||
1627 | private readonly workerNodeStealTask = ( | |
1628 | workerNodeKey: number | |
1629 | ): Task<Data> | undefined => { | |
dd951876 | 1630 | const workerNodes = this.workerNodes |
a6b3272b | 1631 | .slice() |
dd951876 JB |
1632 | .sort( |
1633 | (workerNodeA, workerNodeB) => | |
1634 | workerNodeB.usage.tasks.queued - workerNodeA.usage.tasks.queued | |
1635 | ) | |
f201a0cd | 1636 | const sourceWorkerNode = workerNodes.find( |
463226a4 JB |
1637 | (sourceWorkerNode, sourceWorkerNodeKey) => |
1638 | sourceWorkerNode.info.ready && | |
1639 | sourceWorkerNodeKey !== workerNodeKey && | |
1640 | sourceWorkerNode.usage.tasks.queued > 0 | |
f201a0cd JB |
1641 | ) |
1642 | if (sourceWorkerNode != null) { | |
72ae84a2 | 1643 | const task = sourceWorkerNode.popTask() as Task<Data> |
42c677c1 | 1644 | this.handleTask(workerNodeKey, task) |
f1f77f45 | 1645 | this.updateTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey) |
f201a0cd | 1646 | this.updateTaskStolenStatisticsWorkerUsage( |
463226a4 | 1647 | workerNodeKey, |
f201a0cd JB |
1648 | task.name as string |
1649 | ) | |
463226a4 | 1650 | return task |
72695f86 JB |
1651 | } |
1652 | } | |
1653 | ||
9f95d5eb | 1654 | private readonly handleBackPressureEvent = ( |
e1c2dba7 | 1655 | eventDetail: WorkerNodeEventDetail |
9f95d5eb | 1656 | ): void => { |
cb71d660 JB |
1657 | if (this.workerNodes.length <= 1) { |
1658 | return | |
1659 | } | |
e1c2dba7 | 1660 | const { workerId } = eventDetail |
f778c355 JB |
1661 | const sizeOffset = 1 |
1662 | if ((this.opts.tasksQueueOptions?.size as number) <= sizeOffset) { | |
68dbcdc0 JB |
1663 | return |
1664 | } | |
72695f86 | 1665 | const sourceWorkerNode = |
b5e75be8 | 1666 | this.workerNodes[this.getWorkerNodeKeyByWorkerId(workerId)] |
72695f86 | 1667 | const workerNodes = this.workerNodes |
a6b3272b | 1668 | .slice() |
72695f86 JB |
1669 | .sort( |
1670 | (workerNodeA, workerNodeB) => | |
1671 | workerNodeA.usage.tasks.queued - workerNodeB.usage.tasks.queued | |
1672 | ) | |
1673 | for (const [workerNodeKey, workerNode] of workerNodes.entries()) { | |
1674 | if ( | |
0bc68267 | 1675 | sourceWorkerNode.usage.tasks.queued > 0 && |
a6b3272b | 1676 | workerNode.info.ready && |
b5e75be8 | 1677 | workerNode.info.id !== workerId && |
0bc68267 | 1678 | workerNode.usage.tasks.queued < |
f778c355 | 1679 | (this.opts.tasksQueueOptions?.size as number) - sizeOffset |
72695f86 | 1680 | ) { |
72ae84a2 | 1681 | const task = sourceWorkerNode.popTask() as Task<Data> |
42c677c1 | 1682 | this.handleTask(workerNodeKey, task) |
b1838604 JB |
1683 | this.updateTaskStolenStatisticsWorkerUsage( |
1684 | workerNodeKey, | |
b1838604 JB |
1685 | task.name as string |
1686 | ) | |
10ecf8fd | 1687 | } |
a2ed5053 JB |
1688 | } |
1689 | } | |
1690 | ||
be0676b3 | 1691 | /** |
fcd39179 | 1692 | * This method is the message listener registered on each worker. |
be0676b3 | 1693 | */ |
3a776b6d JB |
1694 | protected readonly workerMessageListener = ( |
1695 | message: MessageValue<Response> | |
1696 | ): void => { | |
fcd39179 | 1697 | this.checkMessageWorkerId(message) |
b641345c JB |
1698 | const { workerId, ready, taskId, taskFunctionNames } = message |
1699 | if (ready != null && taskFunctionNames != null) { | |
fcd39179 JB |
1700 | // Worker ready response received from worker |
1701 | this.handleWorkerReadyResponse(message) | |
b641345c | 1702 | } else if (taskId != null) { |
fcd39179 JB |
1703 | // Task execution response received from worker |
1704 | this.handleTaskExecutionResponse(message) | |
b641345c | 1705 | } else if (taskFunctionNames != null) { |
fcd39179 JB |
1706 | // Task function names message received from worker |
1707 | this.getWorkerInfo( | |
b641345c JB |
1708 | this.getWorkerNodeKeyByWorkerId(workerId) |
1709 | ).taskFunctionNames = taskFunctionNames | |
6b272951 JB |
1710 | } |
1711 | } | |
1712 | ||
10e2aa7e | 1713 | private handleWorkerReadyResponse (message: MessageValue<Response>): void { |
463226a4 JB |
1714 | const { workerId, ready, taskFunctionNames } = message |
1715 | if (ready === false) { | |
1716 | throw new Error(`Worker ${workerId as number} failed to initialize`) | |
f05ed93c | 1717 | } |
a5d15204 | 1718 | const workerInfo = this.getWorkerInfo( |
463226a4 | 1719 | this.getWorkerNodeKeyByWorkerId(workerId) |
46b0bb09 | 1720 | ) |
463226a4 JB |
1721 | workerInfo.ready = ready as boolean |
1722 | workerInfo.taskFunctionNames = taskFunctionNames | |
55082af9 JB |
1723 | if (!this.readyEventEmitted && this.ready) { |
1724 | this.readyEventEmitted = true | |
1725 | this.emitter?.emit(PoolEvents.ready, this.info) | |
2431bdb4 | 1726 | } |
6b272951 JB |
1727 | } |
1728 | ||
1729 | private handleTaskExecutionResponse (message: MessageValue<Response>): void { | |
463226a4 | 1730 | const { workerId, taskId, workerError, data } = message |
5441aea6 | 1731 | const promiseResponse = this.promiseResponseMap.get(taskId as string) |
6b272951 | 1732 | if (promiseResponse != null) { |
f18fd12b | 1733 | const { resolve, reject, workerNodeKey, asyncResource } = promiseResponse |
6703b9f4 JB |
1734 | if (workerError != null) { |
1735 | this.emitter?.emit(PoolEvents.taskError, workerError) | |
f18fd12b JB |
1736 | asyncResource != null |
1737 | ? asyncResource.runInAsyncScope( | |
1738 | reject, | |
1739 | this.emitter, | |
1740 | workerError.message | |
1741 | ) | |
1742 | : reject(workerError.message) | |
6b272951 | 1743 | } else { |
f18fd12b JB |
1744 | asyncResource != null |
1745 | ? asyncResource.runInAsyncScope(resolve, this.emitter, data) | |
1746 | : resolve(data as Response) | |
6b272951 | 1747 | } |
f18fd12b | 1748 | asyncResource?.emitDestroy() |
501aea93 | 1749 | this.afterTaskExecutionHook(workerNodeKey, message) |
f3a91bac | 1750 | this.workerChoiceStrategyContext.update(workerNodeKey) |
5441aea6 | 1751 | this.promiseResponseMap.delete(taskId as string) |
463226a4 JB |
1752 | if (this.opts.enableTasksQueue === true) { |
1753 | const workerNodeTasksUsage = this.workerNodes[workerNodeKey].usage.tasks | |
1754 | if ( | |
1755 | this.tasksQueueSize(workerNodeKey) > 0 && | |
1756 | workerNodeTasksUsage.executing < | |
1757 | (this.opts.tasksQueueOptions?.concurrency as number) | |
1758 | ) { | |
1759 | this.executeTask( | |
1760 | workerNodeKey, | |
1761 | this.dequeueTask(workerNodeKey) as Task<Data> | |
1762 | ) | |
1763 | } | |
1764 | if ( | |
1765 | workerNodeTasksUsage.executing === 0 && | |
1766 | this.tasksQueueSize(workerNodeKey) === 0 && | |
1767 | workerNodeTasksUsage.sequentiallyStolen === 0 | |
1768 | ) { | |
e1c2dba7 JB |
1769 | this.workerNodes[workerNodeKey].emit('idleWorkerNode', { |
1770 | workerId: workerId as number, | |
1771 | workerNodeKey | |
1772 | }) | |
463226a4 | 1773 | } |
be0676b3 APA |
1774 | } |
1775 | } | |
be0676b3 | 1776 | } |
7c0ba920 | 1777 | |
a1763c54 | 1778 | private checkAndEmitTaskExecutionEvents (): void { |
33e6bb4c JB |
1779 | if (this.busy) { |
1780 | this.emitter?.emit(PoolEvents.busy, this.info) | |
a1763c54 JB |
1781 | } |
1782 | } | |
1783 | ||
1784 | private checkAndEmitTaskQueuingEvents (): void { | |
1785 | if (this.hasBackPressure()) { | |
1786 | this.emitter?.emit(PoolEvents.backPressure, this.info) | |
164d950a JB |
1787 | } |
1788 | } | |
1789 | ||
33e6bb4c JB |
1790 | private checkAndEmitDynamicWorkerCreationEvents (): void { |
1791 | if (this.type === PoolTypes.dynamic) { | |
1792 | if (this.full) { | |
1793 | this.emitter?.emit(PoolEvents.full, this.info) | |
1794 | } | |
1795 | } | |
1796 | } | |
1797 | ||
8a1260a3 | 1798 | /** |
aa9eede8 | 1799 | * Gets the worker information given its worker node key. |
8a1260a3 JB |
1800 | * |
1801 | * @param workerNodeKey - The worker node key. | |
3f09ed9f | 1802 | * @returns The worker information. |
8a1260a3 | 1803 | */ |
46b0bb09 | 1804 | protected getWorkerInfo (workerNodeKey: number): WorkerInfo { |
dbfa7948 | 1805 | return this.workerNodes[workerNodeKey]?.info |
e221309a JB |
1806 | } |
1807 | ||
a05c10de | 1808 | /** |
b0a4db63 | 1809 | * Adds the given worker in the pool worker nodes. |
ea7a90d3 | 1810 | * |
38e795c1 | 1811 | * @param worker - The worker. |
aa9eede8 JB |
1812 | * @returns The added worker node key. |
1813 | * @throws {@link https://nodejs.org/api/errors.html#class-error} If the added worker node is not found. | |
ea7a90d3 | 1814 | */ |
b0a4db63 | 1815 | private addWorkerNode (worker: Worker): number { |
671d5154 JB |
1816 | const workerNode = new WorkerNode<Worker, Data>( |
1817 | worker, | |
ff3f866a | 1818 | this.opts.tasksQueueOptions?.size ?? Math.pow(this.maxSize, 2) |
671d5154 | 1819 | ) |
b97d82d8 | 1820 | // Flag the worker node as ready at pool startup. |
d2c73f82 JB |
1821 | if (this.starting) { |
1822 | workerNode.info.ready = true | |
1823 | } | |
aa9eede8 | 1824 | this.workerNodes.push(workerNode) |
aad6fb64 | 1825 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
aa9eede8 | 1826 | if (workerNodeKey === -1) { |
86ed0598 | 1827 | throw new Error('Worker added not found in worker nodes') |
aa9eede8 JB |
1828 | } |
1829 | return workerNodeKey | |
ea7a90d3 | 1830 | } |
c923ce56 | 1831 | |
51fe3d3c | 1832 | /** |
f06e48d8 | 1833 | * Removes the given worker from the pool worker nodes. |
51fe3d3c | 1834 | * |
f06e48d8 | 1835 | * @param worker - The worker. |
51fe3d3c | 1836 | */ |
416fd65c | 1837 | private removeWorkerNode (worker: Worker): void { |
aad6fb64 | 1838 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
1f68cede JB |
1839 | if (workerNodeKey !== -1) { |
1840 | this.workerNodes.splice(workerNodeKey, 1) | |
1841 | this.workerChoiceStrategyContext.remove(workerNodeKey) | |
1842 | } | |
51fe3d3c | 1843 | } |
adc3c320 | 1844 | |
ae3ab61d JB |
1845 | protected flagWorkerNodeAsNotReady (workerNodeKey: number): void { |
1846 | this.getWorkerInfo(workerNodeKey).ready = false | |
1847 | } | |
1848 | ||
e2b31e32 JB |
1849 | /** @inheritDoc */ |
1850 | public hasWorkerNodeBackPressure (workerNodeKey: number): boolean { | |
9e844245 | 1851 | return ( |
e2b31e32 JB |
1852 | this.opts.enableTasksQueue === true && |
1853 | this.workerNodes[workerNodeKey].hasBackPressure() | |
9e844245 JB |
1854 | ) |
1855 | } | |
1856 | ||
1857 | private hasBackPressure (): boolean { | |
1858 | return ( | |
1859 | this.opts.enableTasksQueue === true && | |
1860 | this.workerNodes.findIndex( | |
041dc05b | 1861 | workerNode => !workerNode.hasBackPressure() |
a1763c54 | 1862 | ) === -1 |
9e844245 | 1863 | ) |
e2b31e32 JB |
1864 | } |
1865 | ||
b0a4db63 | 1866 | /** |
aa9eede8 | 1867 | * Executes the given task on the worker given its worker node key. |
b0a4db63 | 1868 | * |
aa9eede8 | 1869 | * @param workerNodeKey - The worker node key. |
b0a4db63 JB |
1870 | * @param task - The task to execute. |
1871 | */ | |
2e81254d | 1872 | private executeTask (workerNodeKey: number, task: Task<Data>): void { |
1c6fe997 | 1873 | this.beforeTaskExecutionHook(workerNodeKey, task) |
bbfa38a2 | 1874 | this.sendToWorker(workerNodeKey, task, task.transferList) |
a1763c54 | 1875 | this.checkAndEmitTaskExecutionEvents() |
2e81254d JB |
1876 | } |
1877 | ||
f9f00b5f | 1878 | private enqueueTask (workerNodeKey: number, task: Task<Data>): number { |
a1763c54 JB |
1879 | const tasksQueueSize = this.workerNodes[workerNodeKey].enqueueTask(task) |
1880 | this.checkAndEmitTaskQueuingEvents() | |
1881 | return tasksQueueSize | |
adc3c320 JB |
1882 | } |
1883 | ||
416fd65c | 1884 | private dequeueTask (workerNodeKey: number): Task<Data> | undefined { |
4b628b48 | 1885 | return this.workerNodes[workerNodeKey].dequeueTask() |
adc3c320 JB |
1886 | } |
1887 | ||
416fd65c | 1888 | private tasksQueueSize (workerNodeKey: number): number { |
4b628b48 | 1889 | return this.workerNodes[workerNodeKey].tasksQueueSize() |
df593701 JB |
1890 | } |
1891 | ||
81c02522 | 1892 | protected flushTasksQueue (workerNodeKey: number): void { |
920278a2 JB |
1893 | while (this.tasksQueueSize(workerNodeKey) > 0) { |
1894 | this.executeTask( | |
1895 | workerNodeKey, | |
1896 | this.dequeueTask(workerNodeKey) as Task<Data> | |
1897 | ) | |
ff733df7 | 1898 | } |
4b628b48 | 1899 | this.workerNodes[workerNodeKey].clearTasksQueue() |
ff733df7 JB |
1900 | } |
1901 | ||
ef41a6e6 JB |
1902 | private flushTasksQueues (): void { |
1903 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
1904 | this.flushTasksQueue(workerNodeKey) | |
1905 | } | |
1906 | } | |
c97c7edb | 1907 | } |