Commit | Line | Data |
---|---|---|
ded253e2 | 1 | import { AsyncResource } from 'node:async_hooks' |
2845f2a5 | 2 | import { randomUUID } from 'node:crypto' |
ded253e2 | 3 | import { EventEmitterAsyncResource } from 'node:events' |
62c15a68 | 4 | import { performance } from 'node:perf_hooks' |
ef083f7b | 5 | import type { TransferListItem } from 'node:worker_threads' |
ded253e2 | 6 | |
5c4d16da JB |
7 | import type { |
8 | MessageValue, | |
9 | PromiseResponseWrapper, | |
76d91ea0 | 10 | Task |
d35e5717 | 11 | } from '../utility-types.js' |
bbeadd16 | 12 | import { |
ded253e2 | 13 | average, |
ff128cc9 | 14 | DEFAULT_TASK_NAME, |
bbeadd16 | 15 | EMPTY_FUNCTION, |
463226a4 | 16 | exponentialDelay, |
59317253 | 17 | isKillBehavior, |
0d80593b | 18 | isPlainObject, |
90d6701c | 19 | max, |
afe0d5bf | 20 | median, |
90d6701c | 21 | min, |
463226a4 JB |
22 | round, |
23 | sleep | |
d35e5717 | 24 | } from '../utils.js' |
d35e5717 | 25 | import type { TaskFunction } from '../worker/task-functions.js' |
ded253e2 | 26 | import { KillBehaviors } from '../worker/worker-options.js' |
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 |
d35e5717 | 35 | } from './pool.js' |
a35560ba | 36 | import { |
f0d7f803 | 37 | Measurements, |
a35560ba | 38 | WorkerChoiceStrategies, |
a20f0ba5 JB |
39 | type WorkerChoiceStrategy, |
40 | type WorkerChoiceStrategyOptions | |
d35e5717 JB |
41 | } from './selection-strategies/selection-strategies-types.js' |
42 | import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context.js' | |
bde6b5d7 JB |
43 | import { |
44 | checkFilePath, | |
45 | checkValidTasksQueueOptions, | |
bfc75cca | 46 | checkValidWorkerChoiceStrategy, |
32b141fd | 47 | getDefaultTasksQueueOptions, |
c329fd41 JB |
48 | updateEluWorkerUsage, |
49 | updateRunTimeWorkerUsage, | |
50 | updateTaskStatisticsWorkerUsage, | |
51 | updateWaitTimeWorkerUsage, | |
87347ea8 | 52 | waitWorkerNodeEvents |
d35e5717 | 53 | } from './utils.js' |
ded253e2 JB |
54 | import { version } from './version.js' |
55 | import type { | |
56 | IWorker, | |
57 | IWorkerNode, | |
58 | WorkerInfo, | |
59 | WorkerNodeEventDetail, | |
60 | WorkerType | |
61 | } from './worker.js' | |
62 | import { WorkerNode } from './worker-node.js' | |
23ccf9d7 | 63 | |
729c563d | 64 | /** |
ea7a90d3 | 65 | * Base class that implements some shared logic for all poolifier pools. |
729c563d | 66 | * |
38e795c1 | 67 | * @typeParam Worker - Type of worker which manages this pool. |
e102732c JB |
68 | * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data. |
69 | * @typeParam Response - Type of execution response. This can only be structured-cloneable data. | |
729c563d | 70 | */ |
c97c7edb | 71 | export abstract class AbstractPool< |
f06e48d8 | 72 | Worker extends IWorker, |
d3c8a1a8 S |
73 | Data = unknown, |
74 | Response = unknown | |
c4855468 | 75 | > implements IPool<Worker, Data, Response> { |
afc003b2 | 76 | /** @inheritDoc */ |
4b628b48 | 77 | public readonly workerNodes: Array<IWorkerNode<Worker, Data>> = [] |
4a6952ff | 78 | |
afc003b2 | 79 | /** @inheritDoc */ |
f80125ca | 80 | public emitter?: EventEmitterAsyncResource |
7c0ba920 | 81 | |
be0676b3 | 82 | /** |
419e8121 | 83 | * The task execution response promise map: |
2740a743 | 84 | * - `key`: The message id of each submitted task. |
a3445496 | 85 | * - `value`: An object that contains the worker, the execution response promise resolve and reject callbacks. |
be0676b3 | 86 | * |
a3445496 | 87 | * When we receive a message from the worker, we get a map entry with the promise resolve/reject bound to the message id. |
be0676b3 | 88 | */ |
501aea93 JB |
89 | protected promiseResponseMap: Map<string, PromiseResponseWrapper<Response>> = |
90 | new Map<string, PromiseResponseWrapper<Response>>() | |
c97c7edb | 91 | |
a35560ba | 92 | /** |
51fe3d3c | 93 | * Worker choice strategy context referencing a worker choice algorithm implementation. |
a35560ba | 94 | */ |
c63a35a0 | 95 | protected workerChoiceStrategyContext?: WorkerChoiceStrategyContext< |
78cea37e JB |
96 | Worker, |
97 | Data, | |
98 | Response | |
a35560ba S |
99 | > |
100 | ||
72ae84a2 JB |
101 | /** |
102 | * The task functions added at runtime map: | |
103 | * - `key`: The task function name. | |
104 | * - `value`: The task function itself. | |
105 | */ | |
106 | private readonly taskFunctions: Map<string, TaskFunction<Data, Response>> | |
107 | ||
15b176e0 JB |
108 | /** |
109 | * Whether the pool is started or not. | |
110 | */ | |
111 | private started: boolean | |
47352846 JB |
112 | /** |
113 | * Whether the pool is starting or not. | |
114 | */ | |
115 | private starting: boolean | |
711623b8 JB |
116 | /** |
117 | * Whether the pool is destroying or not. | |
118 | */ | |
119 | private destroying: boolean | |
55082af9 JB |
120 | /** |
121 | * Whether the pool ready event has been emitted or not. | |
122 | */ | |
123 | private readyEventEmitted: boolean | |
afe0d5bf JB |
124 | /** |
125 | * The start timestamp of the pool. | |
126 | */ | |
127 | private readonly startTimestamp | |
128 | ||
729c563d S |
129 | /** |
130 | * Constructs a new poolifier pool. | |
131 | * | |
00e1bdeb | 132 | * @param minimumNumberOfWorkers - Minimum number of workers that this pool manages. |
029715f0 | 133 | * @param filePath - Path to the worker file. |
38e795c1 | 134 | * @param opts - Options for the pool. |
00e1bdeb | 135 | * @param maximumNumberOfWorkers - Maximum number of workers that this pool manages. |
729c563d | 136 | */ |
c97c7edb | 137 | public constructor ( |
26ce26ca | 138 | protected readonly minimumNumberOfWorkers: number, |
b4213b7f | 139 | protected readonly filePath: string, |
26ce26ca JB |
140 | protected readonly opts: PoolOptions<Worker>, |
141 | protected readonly maximumNumberOfWorkers?: number | |
c97c7edb | 142 | ) { |
78cea37e | 143 | if (!this.isMain()) { |
04f45163 | 144 | throw new Error( |
8c6d4acf | 145 | 'Cannot start a pool from a worker with the same type as the pool' |
04f45163 | 146 | ) |
c97c7edb | 147 | } |
26ce26ca | 148 | this.checkPoolType() |
bde6b5d7 | 149 | checkFilePath(this.filePath) |
26ce26ca | 150 | this.checkMinimumNumberOfWorkers(this.minimumNumberOfWorkers) |
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 | ||
26ce26ca JB |
185 | private checkPoolType (): void { |
186 | if (this.type === PoolTypes.fixed && this.maximumNumberOfWorkers != null) { | |
187 | throw new Error( | |
188 | 'Cannot instantiate a fixed pool with a maximum number of workers specified at initialization' | |
189 | ) | |
190 | } | |
191 | } | |
192 | ||
c63a35a0 JB |
193 | private checkMinimumNumberOfWorkers ( |
194 | minimumNumberOfWorkers: number | undefined | |
195 | ): void { | |
af7f2788 | 196 | if (minimumNumberOfWorkers == null) { |
8d3782fa JB |
197 | throw new Error( |
198 | 'Cannot instantiate a pool without specifying the number of workers' | |
199 | ) | |
af7f2788 | 200 | } else if (!Number.isSafeInteger(minimumNumberOfWorkers)) { |
473c717a | 201 | throw new TypeError( |
0d80593b | 202 | 'Cannot instantiate a pool with a non safe integer number of workers' |
8d3782fa | 203 | ) |
af7f2788 | 204 | } else if (minimumNumberOfWorkers < 0) { |
473c717a | 205 | throw new RangeError( |
8d3782fa JB |
206 | 'Cannot instantiate a pool with a negative number of workers' |
207 | ) | |
af7f2788 | 208 | } else if (this.type === PoolTypes.fixed && minimumNumberOfWorkers === 0) { |
2431bdb4 JB |
209 | throw new RangeError('Cannot instantiate a fixed pool with zero worker') |
210 | } | |
211 | } | |
212 | ||
7c0ba920 | 213 | private checkPoolOptions (opts: PoolOptions<Worker>): void { |
0d80593b | 214 | if (isPlainObject(opts)) { |
47352846 | 215 | this.opts.startWorkers = opts.startWorkers ?? true |
c63a35a0 | 216 | checkValidWorkerChoiceStrategy(opts.workerChoiceStrategy) |
0d80593b JB |
217 | this.opts.workerChoiceStrategy = |
218 | opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN | |
2324f8c9 | 219 | this.checkValidWorkerChoiceStrategyOptions( |
c63a35a0 | 220 | opts.workerChoiceStrategyOptions |
2324f8c9 | 221 | ) |
26ce26ca JB |
222 | if (opts.workerChoiceStrategyOptions != null) { |
223 | this.opts.workerChoiceStrategyOptions = opts.workerChoiceStrategyOptions | |
8990357d | 224 | } |
1f68cede | 225 | this.opts.restartWorkerOnError = opts.restartWorkerOnError ?? true |
0d80593b JB |
226 | this.opts.enableEvents = opts.enableEvents ?? true |
227 | this.opts.enableTasksQueue = opts.enableTasksQueue ?? false | |
228 | if (this.opts.enableTasksQueue) { | |
c63a35a0 | 229 | checkValidTasksQueueOptions(opts.tasksQueueOptions) |
0d80593b | 230 | this.opts.tasksQueueOptions = this.buildTasksQueueOptions( |
c63a35a0 | 231 | opts.tasksQueueOptions |
0d80593b JB |
232 | ) |
233 | } | |
234 | } else { | |
235 | throw new TypeError('Invalid pool options: must be a plain object') | |
7171d33f | 236 | } |
aee46736 JB |
237 | } |
238 | ||
0d80593b | 239 | private checkValidWorkerChoiceStrategyOptions ( |
c63a35a0 | 240 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | undefined |
0d80593b | 241 | ): void { |
2324f8c9 JB |
242 | if ( |
243 | workerChoiceStrategyOptions != null && | |
244 | !isPlainObject(workerChoiceStrategyOptions) | |
245 | ) { | |
0d80593b JB |
246 | throw new TypeError( |
247 | 'Invalid worker choice strategy options: must be a plain object' | |
248 | ) | |
249 | } | |
49be33fe | 250 | if ( |
2324f8c9 | 251 | workerChoiceStrategyOptions?.weights != null && |
26ce26ca JB |
252 | Object.keys(workerChoiceStrategyOptions.weights).length !== |
253 | (this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers) | |
49be33fe JB |
254 | ) { |
255 | throw new Error( | |
256 | 'Invalid worker choice strategy options: must have a weight for each worker node' | |
257 | ) | |
258 | } | |
f0d7f803 | 259 | if ( |
2324f8c9 | 260 | workerChoiceStrategyOptions?.measurement != null && |
f0d7f803 JB |
261 | !Object.values(Measurements).includes( |
262 | workerChoiceStrategyOptions.measurement | |
263 | ) | |
264 | ) { | |
265 | throw new Error( | |
266 | `Invalid worker choice strategy options: invalid measurement '${workerChoiceStrategyOptions.measurement}'` | |
267 | ) | |
268 | } | |
0d80593b JB |
269 | } |
270 | ||
b5604034 | 271 | private initializeEventEmitter (): void { |
5b7d00b4 | 272 | this.emitter = new EventEmitterAsyncResource({ |
b5604034 JB |
273 | name: `poolifier:${this.type}-${this.worker}-pool` |
274 | }) | |
275 | } | |
276 | ||
08f3f44c | 277 | /** @inheritDoc */ |
6b27d407 JB |
278 | public get info (): PoolInfo { |
279 | return { | |
23ccf9d7 | 280 | version, |
6b27d407 | 281 | type: this.type, |
184855e6 | 282 | worker: this.worker, |
47352846 | 283 | started: this.started, |
2431bdb4 | 284 | ready: this.ready, |
67f3f2d6 JB |
285 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
286 | strategy: this.opts.workerChoiceStrategy!, | |
0e8587d2 | 287 | strategyRetries: this.workerChoiceStrategyContext?.retriesCount ?? 0, |
26ce26ca JB |
288 | minSize: this.minimumNumberOfWorkers, |
289 | maxSize: this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers, | |
290 | ...(this.workerChoiceStrategyContext?.getTaskStatisticsRequirements() | |
f4d0a470 | 291 | .runTime.aggregate === true && |
c63a35a0 JB |
292 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
293 | .waitTime.aggregate && { | |
294 | utilization: round(this.utilization) | |
295 | }), | |
6b27d407 JB |
296 | workerNodes: this.workerNodes.length, |
297 | idleWorkerNodes: this.workerNodes.reduce( | |
298 | (accumulator, workerNode) => | |
f59e1027 | 299 | workerNode.usage.tasks.executing === 0 |
a4e07f72 JB |
300 | ? accumulator + 1 |
301 | : accumulator, | |
6b27d407 JB |
302 | 0 |
303 | ), | |
5eb72b9e JB |
304 | ...(this.opts.enableTasksQueue === true && { |
305 | stealingWorkerNodes: this.workerNodes.reduce( | |
306 | (accumulator, workerNode) => | |
307 | workerNode.info.stealing ? accumulator + 1 : accumulator, | |
308 | 0 | |
309 | ) | |
310 | }), | |
6b27d407 | 311 | busyWorkerNodes: this.workerNodes.reduce( |
42c677c1 JB |
312 | (accumulator, _workerNode, workerNodeKey) => |
313 | this.isWorkerNodeBusy(workerNodeKey) ? accumulator + 1 : accumulator, | |
6b27d407 JB |
314 | 0 |
315 | ), | |
a4e07f72 | 316 | executedTasks: this.workerNodes.reduce( |
6b27d407 | 317 | (accumulator, workerNode) => |
f59e1027 | 318 | accumulator + workerNode.usage.tasks.executed, |
a4e07f72 JB |
319 | 0 |
320 | ), | |
321 | executingTasks: this.workerNodes.reduce( | |
322 | (accumulator, workerNode) => | |
f59e1027 | 323 | accumulator + workerNode.usage.tasks.executing, |
6b27d407 JB |
324 | 0 |
325 | ), | |
daf86646 JB |
326 | ...(this.opts.enableTasksQueue === true && { |
327 | queuedTasks: this.workerNodes.reduce( | |
328 | (accumulator, workerNode) => | |
329 | accumulator + workerNode.usage.tasks.queued, | |
330 | 0 | |
331 | ) | |
332 | }), | |
333 | ...(this.opts.enableTasksQueue === true && { | |
334 | maxQueuedTasks: this.workerNodes.reduce( | |
335 | (accumulator, workerNode) => | |
c63a35a0 | 336 | accumulator + (workerNode.usage.tasks.maxQueued ?? 0), |
daf86646 JB |
337 | 0 |
338 | ) | |
339 | }), | |
a1763c54 JB |
340 | ...(this.opts.enableTasksQueue === true && { |
341 | backPressure: this.hasBackPressure() | |
342 | }), | |
68cbdc84 JB |
343 | ...(this.opts.enableTasksQueue === true && { |
344 | stolenTasks: this.workerNodes.reduce( | |
345 | (accumulator, workerNode) => | |
346 | accumulator + workerNode.usage.tasks.stolen, | |
347 | 0 | |
348 | ) | |
349 | }), | |
a4e07f72 JB |
350 | failedTasks: this.workerNodes.reduce( |
351 | (accumulator, workerNode) => | |
f59e1027 | 352 | accumulator + workerNode.usage.tasks.failed, |
a4e07f72 | 353 | 0 |
1dcf8b7b | 354 | ), |
26ce26ca | 355 | ...(this.workerChoiceStrategyContext?.getTaskStatisticsRequirements() |
f4d0a470 | 356 | .runTime.aggregate === true && { |
1dcf8b7b | 357 | runTime: { |
98e72cda | 358 | minimum: round( |
90d6701c | 359 | min( |
98e72cda | 360 | ...this.workerNodes.map( |
c63a35a0 | 361 | workerNode => workerNode.usage.runTime.minimum ?? Infinity |
98e72cda | 362 | ) |
1dcf8b7b JB |
363 | ) |
364 | ), | |
98e72cda | 365 | maximum: round( |
90d6701c | 366 | max( |
98e72cda | 367 | ...this.workerNodes.map( |
c63a35a0 | 368 | workerNode => workerNode.usage.runTime.maximum ?? -Infinity |
98e72cda | 369 | ) |
1dcf8b7b | 370 | ) |
98e72cda | 371 | ), |
c63a35a0 | 372 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
3baa0837 JB |
373 | .runTime.average && { |
374 | average: round( | |
375 | average( | |
376 | this.workerNodes.reduce<number[]>( | |
377 | (accumulator, workerNode) => | |
378 | accumulator.concat(workerNode.usage.runTime.history), | |
379 | [] | |
380 | ) | |
98e72cda | 381 | ) |
dc021bcc | 382 | ) |
3baa0837 | 383 | }), |
c63a35a0 | 384 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
98e72cda JB |
385 | .runTime.median && { |
386 | median: round( | |
387 | median( | |
3baa0837 JB |
388 | this.workerNodes.reduce<number[]>( |
389 | (accumulator, workerNode) => | |
390 | accumulator.concat(workerNode.usage.runTime.history), | |
391 | [] | |
98e72cda JB |
392 | ) |
393 | ) | |
394 | ) | |
395 | }) | |
1dcf8b7b JB |
396 | } |
397 | }), | |
26ce26ca | 398 | ...(this.workerChoiceStrategyContext?.getTaskStatisticsRequirements() |
f4d0a470 | 399 | .waitTime.aggregate === true && { |
1dcf8b7b | 400 | waitTime: { |
98e72cda | 401 | minimum: round( |
90d6701c | 402 | min( |
98e72cda | 403 | ...this.workerNodes.map( |
c63a35a0 | 404 | workerNode => workerNode.usage.waitTime.minimum ?? Infinity |
98e72cda | 405 | ) |
1dcf8b7b JB |
406 | ) |
407 | ), | |
98e72cda | 408 | maximum: round( |
90d6701c | 409 | max( |
98e72cda | 410 | ...this.workerNodes.map( |
c63a35a0 | 411 | workerNode => workerNode.usage.waitTime.maximum ?? -Infinity |
98e72cda | 412 | ) |
1dcf8b7b | 413 | ) |
98e72cda | 414 | ), |
c63a35a0 | 415 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
3baa0837 JB |
416 | .waitTime.average && { |
417 | average: round( | |
418 | average( | |
419 | this.workerNodes.reduce<number[]>( | |
420 | (accumulator, workerNode) => | |
421 | accumulator.concat(workerNode.usage.waitTime.history), | |
422 | [] | |
423 | ) | |
98e72cda | 424 | ) |
dc021bcc | 425 | ) |
3baa0837 | 426 | }), |
c63a35a0 | 427 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
98e72cda JB |
428 | .waitTime.median && { |
429 | median: round( | |
430 | median( | |
3baa0837 JB |
431 | this.workerNodes.reduce<number[]>( |
432 | (accumulator, workerNode) => | |
433 | accumulator.concat(workerNode.usage.waitTime.history), | |
434 | [] | |
98e72cda JB |
435 | ) |
436 | ) | |
437 | ) | |
438 | }) | |
1dcf8b7b JB |
439 | } |
440 | }) | |
6b27d407 JB |
441 | } |
442 | } | |
08f3f44c | 443 | |
aa9eede8 JB |
444 | /** |
445 | * The pool readiness boolean status. | |
446 | */ | |
2431bdb4 | 447 | private get ready (): boolean { |
8e8d9101 JB |
448 | if (this.empty) { |
449 | return false | |
450 | } | |
2431bdb4 | 451 | return ( |
b97d82d8 JB |
452 | this.workerNodes.reduce( |
453 | (accumulator, workerNode) => | |
454 | !workerNode.info.dynamic && workerNode.info.ready | |
455 | ? accumulator + 1 | |
456 | : accumulator, | |
457 | 0 | |
26ce26ca | 458 | ) >= this.minimumNumberOfWorkers |
2431bdb4 JB |
459 | ) |
460 | } | |
461 | ||
8e8d9101 JB |
462 | /** |
463 | * The pool emptiness boolean status. | |
464 | */ | |
465 | protected get empty (): boolean { | |
fb43035c | 466 | return this.minimumNumberOfWorkers === 0 && this.workerNodes.length === 0 |
8e8d9101 JB |
467 | } |
468 | ||
afe0d5bf | 469 | /** |
aa9eede8 | 470 | * The approximate pool utilization. |
afe0d5bf JB |
471 | * |
472 | * @returns The pool utilization. | |
473 | */ | |
474 | private get utilization (): number { | |
8e5ca040 | 475 | const poolTimeCapacity = |
26ce26ca JB |
476 | (performance.now() - this.startTimestamp) * |
477 | (this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers) | |
afe0d5bf JB |
478 | const totalTasksRunTime = this.workerNodes.reduce( |
479 | (accumulator, workerNode) => | |
c63a35a0 | 480 | accumulator + (workerNode.usage.runTime.aggregate ?? 0), |
afe0d5bf JB |
481 | 0 |
482 | ) | |
483 | const totalTasksWaitTime = this.workerNodes.reduce( | |
484 | (accumulator, workerNode) => | |
c63a35a0 | 485 | accumulator + (workerNode.usage.waitTime.aggregate ?? 0), |
afe0d5bf JB |
486 | 0 |
487 | ) | |
8e5ca040 | 488 | return (totalTasksRunTime + totalTasksWaitTime) / poolTimeCapacity |
afe0d5bf JB |
489 | } |
490 | ||
8881ae32 | 491 | /** |
aa9eede8 | 492 | * The pool type. |
8881ae32 JB |
493 | * |
494 | * If it is `'dynamic'`, it provides the `max` property. | |
495 | */ | |
496 | protected abstract get type (): PoolType | |
497 | ||
184855e6 | 498 | /** |
aa9eede8 | 499 | * The worker type. |
184855e6 JB |
500 | */ |
501 | protected abstract get worker (): WorkerType | |
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 | ||
aa9eede8 JB |
519 | /** |
520 | * Gets the worker node key given its worker id. | |
521 | * | |
522 | * @param workerId - The worker id. | |
aad6fb64 | 523 | * @returns The worker node key if the worker id is found in the pool worker nodes, `-1` otherwise. |
aa9eede8 | 524 | */ |
72ae84a2 | 525 | private getWorkerNodeKeyByWorkerId (workerId: number | undefined): number { |
aad6fb64 | 526 | return this.workerNodes.findIndex( |
041dc05b | 527 | workerNode => workerNode.info.id === workerId |
aad6fb64 | 528 | ) |
aa9eede8 JB |
529 | } |
530 | ||
afc003b2 | 531 | /** @inheritDoc */ |
a35560ba | 532 | public setWorkerChoiceStrategy ( |
59219cbb JB |
533 | workerChoiceStrategy: WorkerChoiceStrategy, |
534 | workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions | |
a35560ba | 535 | ): void { |
bde6b5d7 | 536 | checkValidWorkerChoiceStrategy(workerChoiceStrategy) |
b98ec2e6 | 537 | this.opts.workerChoiceStrategy = workerChoiceStrategy |
c63a35a0 | 538 | this.workerChoiceStrategyContext?.setWorkerChoiceStrategy( |
b6b32453 JB |
539 | this.opts.workerChoiceStrategy |
540 | ) | |
541 | if (workerChoiceStrategyOptions != null) { | |
542 | this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) | |
543 | } | |
aa9eede8 | 544 | for (const [workerNodeKey, workerNode] of this.workerNodes.entries()) { |
4b628b48 | 545 | workerNode.resetUsage() |
9edb9717 | 546 | this.sendStatisticsMessageToWorker(workerNodeKey) |
59219cbb | 547 | } |
a20f0ba5 JB |
548 | } |
549 | ||
550 | /** @inheritDoc */ | |
551 | public setWorkerChoiceStrategyOptions ( | |
c63a35a0 | 552 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | undefined |
a20f0ba5 | 553 | ): void { |
0d80593b | 554 | this.checkValidWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) |
26ce26ca JB |
555 | if (workerChoiceStrategyOptions != null) { |
556 | this.opts.workerChoiceStrategyOptions = workerChoiceStrategyOptions | |
8990357d | 557 | } |
c63a35a0 | 558 | this.workerChoiceStrategyContext?.setOptions( |
a20f0ba5 | 559 | this.opts.workerChoiceStrategyOptions |
a35560ba S |
560 | ) |
561 | } | |
562 | ||
a20f0ba5 | 563 | /** @inheritDoc */ |
8f52842f JB |
564 | public enableTasksQueue ( |
565 | enable: boolean, | |
566 | tasksQueueOptions?: TasksQueueOptions | |
567 | ): void { | |
a20f0ba5 | 568 | if (this.opts.enableTasksQueue === true && !enable) { |
d6ca1416 JB |
569 | this.unsetTaskStealing() |
570 | this.unsetTasksStealingOnBackPressure() | |
ef41a6e6 | 571 | this.flushTasksQueues() |
a20f0ba5 JB |
572 | } |
573 | this.opts.enableTasksQueue = enable | |
c63a35a0 | 574 | this.setTasksQueueOptions(tasksQueueOptions) |
a20f0ba5 JB |
575 | } |
576 | ||
577 | /** @inheritDoc */ | |
c63a35a0 JB |
578 | public setTasksQueueOptions ( |
579 | tasksQueueOptions: TasksQueueOptions | undefined | |
580 | ): void { | |
a20f0ba5 | 581 | if (this.opts.enableTasksQueue === true) { |
bde6b5d7 | 582 | checkValidTasksQueueOptions(tasksQueueOptions) |
8f52842f JB |
583 | this.opts.tasksQueueOptions = |
584 | this.buildTasksQueueOptions(tasksQueueOptions) | |
67f3f2d6 JB |
585 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
586 | this.setTasksQueueSize(this.opts.tasksQueueOptions.size!) | |
d6ca1416 | 587 | if (this.opts.tasksQueueOptions.taskStealing === true) { |
9f99eb9b | 588 | this.unsetTaskStealing() |
d6ca1416 JB |
589 | this.setTaskStealing() |
590 | } else { | |
591 | this.unsetTaskStealing() | |
592 | } | |
593 | if (this.opts.tasksQueueOptions.tasksStealingOnBackPressure === true) { | |
9f99eb9b | 594 | this.unsetTasksStealingOnBackPressure() |
d6ca1416 JB |
595 | this.setTasksStealingOnBackPressure() |
596 | } else { | |
597 | this.unsetTasksStealingOnBackPressure() | |
598 | } | |
5baee0d7 | 599 | } else if (this.opts.tasksQueueOptions != null) { |
a20f0ba5 JB |
600 | delete this.opts.tasksQueueOptions |
601 | } | |
602 | } | |
603 | ||
9b38ab2d | 604 | private buildTasksQueueOptions ( |
c63a35a0 | 605 | tasksQueueOptions: TasksQueueOptions | undefined |
9b38ab2d JB |
606 | ): TasksQueueOptions { |
607 | return { | |
26ce26ca JB |
608 | ...getDefaultTasksQueueOptions( |
609 | this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers | |
610 | ), | |
9b38ab2d JB |
611 | ...tasksQueueOptions |
612 | } | |
613 | } | |
614 | ||
5b49e864 | 615 | private setTasksQueueSize (size: number): void { |
20c6f652 | 616 | for (const workerNode of this.workerNodes) { |
ff3f866a | 617 | workerNode.tasksQueueBackPressureSize = size |
20c6f652 JB |
618 | } |
619 | } | |
620 | ||
d6ca1416 JB |
621 | private setTaskStealing (): void { |
622 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e44639e9 | 623 | this.workerNodes[workerNodeKey].on('idle', this.handleWorkerNodeIdleEvent) |
d6ca1416 JB |
624 | } |
625 | } | |
626 | ||
627 | private unsetTaskStealing (): void { | |
628 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 629 | this.workerNodes[workerNodeKey].off( |
e44639e9 JB |
630 | 'idle', |
631 | this.handleWorkerNodeIdleEvent | |
9f95d5eb | 632 | ) |
d6ca1416 JB |
633 | } |
634 | } | |
635 | ||
636 | private setTasksStealingOnBackPressure (): void { | |
637 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 638 | this.workerNodes[workerNodeKey].on( |
b5e75be8 | 639 | 'backPressure', |
e44639e9 | 640 | this.handleWorkerNodeBackPressureEvent |
9f95d5eb | 641 | ) |
d6ca1416 JB |
642 | } |
643 | } | |
644 | ||
645 | private unsetTasksStealingOnBackPressure (): void { | |
646 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
e1c2dba7 | 647 | this.workerNodes[workerNodeKey].off( |
b5e75be8 | 648 | 'backPressure', |
e44639e9 | 649 | this.handleWorkerNodeBackPressureEvent |
9f95d5eb | 650 | ) |
d6ca1416 JB |
651 | } |
652 | } | |
653 | ||
c319c66b JB |
654 | /** |
655 | * Whether the pool is full or not. | |
656 | * | |
657 | * The pool filling boolean status. | |
658 | */ | |
dea903a8 | 659 | protected get full (): boolean { |
26ce26ca JB |
660 | return ( |
661 | this.workerNodes.length >= | |
662 | (this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers) | |
663 | ) | |
dea903a8 | 664 | } |
c2ade475 | 665 | |
c319c66b JB |
666 | /** |
667 | * Whether the pool is busy or not. | |
668 | * | |
669 | * The pool busyness boolean status. | |
670 | */ | |
671 | protected abstract get busy (): boolean | |
7c0ba920 | 672 | |
6c6afb84 | 673 | /** |
3d76750a | 674 | * Whether worker nodes are executing concurrently their tasks quota or not. |
6c6afb84 JB |
675 | * |
676 | * @returns Worker nodes busyness boolean status. | |
677 | */ | |
c2ade475 | 678 | protected internalBusy (): boolean { |
3d76750a JB |
679 | if (this.opts.enableTasksQueue === true) { |
680 | return ( | |
681 | this.workerNodes.findIndex( | |
041dc05b | 682 | workerNode => |
3d76750a JB |
683 | workerNode.info.ready && |
684 | workerNode.usage.tasks.executing < | |
67f3f2d6 JB |
685 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
686 | this.opts.tasksQueueOptions!.concurrency! | |
3d76750a JB |
687 | ) === -1 |
688 | ) | |
3d76750a | 689 | } |
419e8121 JB |
690 | return ( |
691 | this.workerNodes.findIndex( | |
692 | workerNode => | |
693 | workerNode.info.ready && workerNode.usage.tasks.executing === 0 | |
694 | ) === -1 | |
695 | ) | |
cb70b19d JB |
696 | } |
697 | ||
42c677c1 JB |
698 | private isWorkerNodeBusy (workerNodeKey: number): boolean { |
699 | if (this.opts.enableTasksQueue === true) { | |
700 | return ( | |
701 | this.workerNodes[workerNodeKey].usage.tasks.executing >= | |
67f3f2d6 JB |
702 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
703 | this.opts.tasksQueueOptions!.concurrency! | |
42c677c1 JB |
704 | ) |
705 | } | |
706 | return this.workerNodes[workerNodeKey].usage.tasks.executing > 0 | |
707 | } | |
708 | ||
e81c38f2 | 709 | private async sendTaskFunctionOperationToWorker ( |
72ae84a2 JB |
710 | workerNodeKey: number, |
711 | message: MessageValue<Data> | |
712 | ): Promise<boolean> { | |
72ae84a2 | 713 | return await new Promise<boolean>((resolve, reject) => { |
ae036c3e JB |
714 | const taskFunctionOperationListener = ( |
715 | message: MessageValue<Response> | |
716 | ): void => { | |
717 | this.checkMessageWorkerId(message) | |
1851fed0 | 718 | const workerId = this.getWorkerInfo(workerNodeKey)?.id |
72ae84a2 | 719 | if ( |
ae036c3e JB |
720 | message.taskFunctionOperationStatus != null && |
721 | message.workerId === workerId | |
72ae84a2 | 722 | ) { |
ae036c3e JB |
723 | if (message.taskFunctionOperationStatus) { |
724 | resolve(true) | |
c63a35a0 | 725 | } else { |
ae036c3e JB |
726 | reject( |
727 | new Error( | |
c63a35a0 | 728 | `Task function operation '${message.taskFunctionOperation}' failed on worker ${message.workerId} with error: '${message.workerError?.message}'` |
ae036c3e | 729 | ) |
72ae84a2 | 730 | ) |
ae036c3e JB |
731 | } |
732 | this.deregisterWorkerMessageListener( | |
733 | this.getWorkerNodeKeyByWorkerId(message.workerId), | |
734 | taskFunctionOperationListener | |
72ae84a2 JB |
735 | ) |
736 | } | |
ae036c3e JB |
737 | } |
738 | this.registerWorkerMessageListener( | |
739 | workerNodeKey, | |
740 | taskFunctionOperationListener | |
741 | ) | |
72ae84a2 JB |
742 | this.sendToWorker(workerNodeKey, message) |
743 | }) | |
744 | } | |
745 | ||
746 | private async sendTaskFunctionOperationToWorkers ( | |
adee6053 | 747 | message: MessageValue<Data> |
e81c38f2 JB |
748 | ): Promise<boolean> { |
749 | return await new Promise<boolean>((resolve, reject) => { | |
ae036c3e JB |
750 | const responsesReceived = new Array<MessageValue<Response>>() |
751 | const taskFunctionOperationsListener = ( | |
752 | message: MessageValue<Response> | |
753 | ): void => { | |
754 | this.checkMessageWorkerId(message) | |
755 | if (message.taskFunctionOperationStatus != null) { | |
756 | responsesReceived.push(message) | |
757 | if (responsesReceived.length === this.workerNodes.length) { | |
e81c38f2 | 758 | if ( |
e81c38f2 JB |
759 | responsesReceived.every( |
760 | message => message.taskFunctionOperationStatus === true | |
761 | ) | |
762 | ) { | |
763 | resolve(true) | |
764 | } else if ( | |
e81c38f2 JB |
765 | responsesReceived.some( |
766 | message => message.taskFunctionOperationStatus === false | |
767 | ) | |
768 | ) { | |
b0b55f57 JB |
769 | const errorResponse = responsesReceived.find( |
770 | response => response.taskFunctionOperationStatus === false | |
771 | ) | |
e81c38f2 JB |
772 | reject( |
773 | new Error( | |
b0b55f57 | 774 | `Task function operation '${ |
e81c38f2 | 775 | message.taskFunctionOperation as string |
c63a35a0 JB |
776 | }' failed on worker ${errorResponse?.workerId} with error: '${ |
777 | errorResponse?.workerError?.message | |
b0b55f57 | 778 | }'` |
e81c38f2 JB |
779 | ) |
780 | ) | |
781 | } | |
ae036c3e JB |
782 | this.deregisterWorkerMessageListener( |
783 | this.getWorkerNodeKeyByWorkerId(message.workerId), | |
784 | taskFunctionOperationsListener | |
785 | ) | |
e81c38f2 | 786 | } |
ae036c3e JB |
787 | } |
788 | } | |
789 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
790 | this.registerWorkerMessageListener( | |
791 | workerNodeKey, | |
792 | taskFunctionOperationsListener | |
793 | ) | |
72ae84a2 | 794 | this.sendToWorker(workerNodeKey, message) |
e81c38f2 JB |
795 | } |
796 | }) | |
6703b9f4 JB |
797 | } |
798 | ||
799 | /** @inheritDoc */ | |
800 | public hasTaskFunction (name: string): boolean { | |
edbc15c6 JB |
801 | for (const workerNode of this.workerNodes) { |
802 | if ( | |
803 | Array.isArray(workerNode.info.taskFunctionNames) && | |
804 | workerNode.info.taskFunctionNames.includes(name) | |
805 | ) { | |
806 | return true | |
807 | } | |
808 | } | |
809 | return false | |
6703b9f4 JB |
810 | } |
811 | ||
812 | /** @inheritDoc */ | |
e81c38f2 JB |
813 | public async addTaskFunction ( |
814 | name: string, | |
3feeab69 | 815 | fn: TaskFunction<Data, Response> |
e81c38f2 | 816 | ): Promise<boolean> { |
3feeab69 JB |
817 | if (typeof name !== 'string') { |
818 | throw new TypeError('name argument must be a string') | |
819 | } | |
820 | if (typeof name === 'string' && name.trim().length === 0) { | |
821 | throw new TypeError('name argument must not be an empty string') | |
822 | } | |
823 | if (typeof fn !== 'function') { | |
824 | throw new TypeError('fn argument must be a function') | |
825 | } | |
adee6053 | 826 | const opResult = await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
827 | taskFunctionOperation: 'add', |
828 | taskFunctionName: name, | |
3feeab69 | 829 | taskFunction: fn.toString() |
6703b9f4 | 830 | }) |
adee6053 JB |
831 | this.taskFunctions.set(name, fn) |
832 | return opResult | |
6703b9f4 JB |
833 | } |
834 | ||
835 | /** @inheritDoc */ | |
e81c38f2 | 836 | public async removeTaskFunction (name: string): Promise<boolean> { |
9eae3c69 JB |
837 | if (!this.taskFunctions.has(name)) { |
838 | throw new Error( | |
16248b23 | 839 | 'Cannot remove a task function not handled on the pool side' |
9eae3c69 JB |
840 | ) |
841 | } | |
adee6053 | 842 | const opResult = await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
843 | taskFunctionOperation: 'remove', |
844 | taskFunctionName: name | |
845 | }) | |
adee6053 JB |
846 | this.deleteTaskFunctionWorkerUsages(name) |
847 | this.taskFunctions.delete(name) | |
848 | return opResult | |
6703b9f4 JB |
849 | } |
850 | ||
90d7d101 | 851 | /** @inheritDoc */ |
6703b9f4 | 852 | public listTaskFunctionNames (): string[] { |
f2dbbf95 JB |
853 | for (const workerNode of this.workerNodes) { |
854 | if ( | |
6703b9f4 JB |
855 | Array.isArray(workerNode.info.taskFunctionNames) && |
856 | workerNode.info.taskFunctionNames.length > 0 | |
f2dbbf95 | 857 | ) { |
6703b9f4 | 858 | return workerNode.info.taskFunctionNames |
f2dbbf95 | 859 | } |
90d7d101 | 860 | } |
f2dbbf95 | 861 | return [] |
90d7d101 JB |
862 | } |
863 | ||
6703b9f4 | 864 | /** @inheritDoc */ |
e81c38f2 | 865 | public async setDefaultTaskFunction (name: string): Promise<boolean> { |
72ae84a2 | 866 | return await this.sendTaskFunctionOperationToWorkers({ |
6703b9f4 JB |
867 | taskFunctionOperation: 'default', |
868 | taskFunctionName: name | |
869 | }) | |
6703b9f4 JB |
870 | } |
871 | ||
adee6053 JB |
872 | private deleteTaskFunctionWorkerUsages (name: string): void { |
873 | for (const workerNode of this.workerNodes) { | |
874 | workerNode.deleteTaskFunctionWorkerUsage(name) | |
875 | } | |
876 | } | |
877 | ||
375f7504 JB |
878 | private shallExecuteTask (workerNodeKey: number): boolean { |
879 | return ( | |
880 | this.tasksQueueSize(workerNodeKey) === 0 && | |
881 | this.workerNodes[workerNodeKey].usage.tasks.executing < | |
67f3f2d6 JB |
882 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
883 | this.opts.tasksQueueOptions!.concurrency! | |
375f7504 JB |
884 | ) |
885 | } | |
886 | ||
afc003b2 | 887 | /** @inheritDoc */ |
7d91a8cd JB |
888 | public async execute ( |
889 | data?: Data, | |
890 | name?: string, | |
891 | transferList?: TransferListItem[] | |
892 | ): Promise<Response> { | |
52b71763 | 893 | return await new Promise<Response>((resolve, reject) => { |
15b176e0 | 894 | if (!this.started) { |
47352846 | 895 | reject(new Error('Cannot execute a task on not started pool')) |
9d2d0da1 | 896 | return |
15b176e0 | 897 | } |
711623b8 JB |
898 | if (this.destroying) { |
899 | reject(new Error('Cannot execute a task on destroying pool')) | |
900 | return | |
901 | } | |
7d91a8cd JB |
902 | if (name != null && typeof name !== 'string') { |
903 | reject(new TypeError('name argument must be a string')) | |
9d2d0da1 | 904 | return |
7d91a8cd | 905 | } |
90d7d101 JB |
906 | if ( |
907 | name != null && | |
908 | typeof name === 'string' && | |
909 | name.trim().length === 0 | |
910 | ) { | |
f58b60b9 | 911 | reject(new TypeError('name argument must not be an empty string')) |
9d2d0da1 | 912 | return |
90d7d101 | 913 | } |
b558f6b5 JB |
914 | if (transferList != null && !Array.isArray(transferList)) { |
915 | reject(new TypeError('transferList argument must be an array')) | |
9d2d0da1 | 916 | return |
b558f6b5 JB |
917 | } |
918 | const timestamp = performance.now() | |
919 | const workerNodeKey = this.chooseWorkerNode() | |
501aea93 | 920 | const task: Task<Data> = { |
52b71763 JB |
921 | name: name ?? DEFAULT_TASK_NAME, |
922 | // eslint-disable-next-line @typescript-eslint/consistent-type-assertions | |
923 | data: data ?? ({} as Data), | |
7d91a8cd | 924 | transferList, |
52b71763 | 925 | timestamp, |
7629bdf1 | 926 | taskId: randomUUID() |
52b71763 | 927 | } |
67f3f2d6 JB |
928 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
929 | this.promiseResponseMap.set(task.taskId!, { | |
2e81254d JB |
930 | resolve, |
931 | reject, | |
f18fd12b JB |
932 | workerNodeKey, |
933 | ...(this.emitter != null && { | |
934 | asyncResource: new AsyncResource('poolifier:task', { | |
935 | triggerAsyncId: this.emitter.asyncId, | |
936 | requireManualDestroy: true | |
937 | }) | |
938 | }) | |
2e81254d | 939 | }) |
52b71763 | 940 | if ( |
4e377863 JB |
941 | this.opts.enableTasksQueue === false || |
942 | (this.opts.enableTasksQueue === true && | |
375f7504 | 943 | this.shallExecuteTask(workerNodeKey)) |
52b71763 | 944 | ) { |
501aea93 | 945 | this.executeTask(workerNodeKey, task) |
4e377863 JB |
946 | } else { |
947 | this.enqueueTask(workerNodeKey, task) | |
52b71763 | 948 | } |
2e81254d | 949 | }) |
280c2a77 | 950 | } |
c97c7edb | 951 | |
47352846 JB |
952 | /** @inheritdoc */ |
953 | public start (): void { | |
711623b8 JB |
954 | if (this.started) { |
955 | throw new Error('Cannot start an already started pool') | |
956 | } | |
957 | if (this.starting) { | |
958 | throw new Error('Cannot start an already starting pool') | |
959 | } | |
960 | if (this.destroying) { | |
961 | throw new Error('Cannot start a destroying pool') | |
962 | } | |
47352846 JB |
963 | this.starting = true |
964 | while ( | |
965 | this.workerNodes.reduce( | |
966 | (accumulator, workerNode) => | |
967 | !workerNode.info.dynamic ? accumulator + 1 : accumulator, | |
968 | 0 | |
26ce26ca | 969 | ) < this.minimumNumberOfWorkers |
47352846 JB |
970 | ) { |
971 | this.createAndSetupWorkerNode() | |
972 | } | |
973 | this.starting = false | |
974 | this.started = true | |
975 | } | |
976 | ||
afc003b2 | 977 | /** @inheritDoc */ |
c97c7edb | 978 | public async destroy (): Promise<void> { |
711623b8 JB |
979 | if (!this.started) { |
980 | throw new Error('Cannot destroy an already destroyed pool') | |
981 | } | |
982 | if (this.starting) { | |
983 | throw new Error('Cannot destroy an starting pool') | |
984 | } | |
985 | if (this.destroying) { | |
986 | throw new Error('Cannot destroy an already destroying pool') | |
987 | } | |
988 | this.destroying = true | |
1fbcaa7c | 989 | await Promise.all( |
14c39df1 | 990 | this.workerNodes.map(async (_workerNode, workerNodeKey) => { |
aa9eede8 | 991 | await this.destroyWorkerNode(workerNodeKey) |
1fbcaa7c JB |
992 | }) |
993 | ) | |
33e6bb4c | 994 | this.emitter?.emit(PoolEvents.destroy, this.info) |
f80125ca | 995 | this.emitter?.emitDestroy() |
78f60f82 | 996 | this.emitter?.removeAllListeners() |
55082af9 | 997 | this.readyEventEmitted = false |
711623b8 | 998 | this.destroying = false |
15b176e0 | 999 | this.started = false |
c97c7edb S |
1000 | } |
1001 | ||
26ce26ca | 1002 | private async sendKillMessageToWorker (workerNodeKey: number): Promise<void> { |
9edb9717 | 1003 | await new Promise<void>((resolve, reject) => { |
c63a35a0 JB |
1004 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
1005 | if (this.workerNodes[workerNodeKey] == null) { | |
ad3836ed | 1006 | resolve() |
85b2561d JB |
1007 | return |
1008 | } | |
ae036c3e JB |
1009 | const killMessageListener = (message: MessageValue<Response>): void => { |
1010 | this.checkMessageWorkerId(message) | |
1e3214b6 JB |
1011 | if (message.kill === 'success') { |
1012 | resolve() | |
1013 | } else if (message.kill === 'failure') { | |
72ae84a2 JB |
1014 | reject( |
1015 | new Error( | |
c63a35a0 | 1016 | `Kill message handling failed on worker ${message.workerId}` |
72ae84a2 JB |
1017 | ) |
1018 | ) | |
1e3214b6 | 1019 | } |
ae036c3e | 1020 | } |
51d9cfbd | 1021 | // FIXME: should be registered only once |
ae036c3e | 1022 | this.registerWorkerMessageListener(workerNodeKey, killMessageListener) |
72ae84a2 | 1023 | this.sendToWorker(workerNodeKey, { kill: true }) |
1e3214b6 | 1024 | }) |
1e3214b6 JB |
1025 | } |
1026 | ||
4a6952ff | 1027 | /** |
aa9eede8 | 1028 | * Terminates the worker node given its worker node key. |
4a6952ff | 1029 | * |
aa9eede8 | 1030 | * @param workerNodeKey - The worker node key. |
4a6952ff | 1031 | */ |
07e0c9e5 JB |
1032 | protected async destroyWorkerNode (workerNodeKey: number): Promise<void> { |
1033 | this.flagWorkerNodeAsNotReady(workerNodeKey) | |
87347ea8 | 1034 | const flushedTasks = this.flushTasksQueue(workerNodeKey) |
07e0c9e5 | 1035 | const workerNode = this.workerNodes[workerNodeKey] |
32b141fd JB |
1036 | await waitWorkerNodeEvents( |
1037 | workerNode, | |
1038 | 'taskFinished', | |
1039 | flushedTasks, | |
1040 | this.opts.tasksQueueOptions?.tasksFinishedTimeout ?? | |
26ce26ca JB |
1041 | getDefaultTasksQueueOptions( |
1042 | this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers | |
1043 | ).tasksFinishedTimeout | |
32b141fd | 1044 | ) |
07e0c9e5 JB |
1045 | await this.sendKillMessageToWorker(workerNodeKey) |
1046 | await workerNode.terminate() | |
1047 | } | |
c97c7edb | 1048 | |
729c563d | 1049 | /** |
6677a3d3 JB |
1050 | * Setup hook to execute code before worker nodes are created in the abstract constructor. |
1051 | * Can be overridden. | |
afc003b2 JB |
1052 | * |
1053 | * @virtual | |
729c563d | 1054 | */ |
280c2a77 | 1055 | protected setupHook (): void { |
965df41c | 1056 | /* Intentionally empty */ |
280c2a77 | 1057 | } |
c97c7edb | 1058 | |
729c563d | 1059 | /** |
280c2a77 S |
1060 | * Should return whether the worker is the main worker or not. |
1061 | */ | |
1062 | protected abstract isMain (): boolean | |
1063 | ||
1064 | /** | |
2e81254d | 1065 | * Hook executed before the worker task execution. |
bf9549ae | 1066 | * Can be overridden. |
729c563d | 1067 | * |
f06e48d8 | 1068 | * @param workerNodeKey - The worker node key. |
1c6fe997 | 1069 | * @param task - The task to execute. |
729c563d | 1070 | */ |
1c6fe997 JB |
1071 | protected beforeTaskExecutionHook ( |
1072 | workerNodeKey: number, | |
1073 | task: Task<Data> | |
1074 | ): void { | |
c63a35a0 | 1075 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
efabc98d | 1076 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
94407def JB |
1077 | const workerUsage = this.workerNodes[workerNodeKey].usage |
1078 | ++workerUsage.tasks.executing | |
c329fd41 JB |
1079 | updateWaitTimeWorkerUsage( |
1080 | this.workerChoiceStrategyContext, | |
1081 | workerUsage, | |
1082 | task | |
1083 | ) | |
94407def JB |
1084 | } |
1085 | if ( | |
1086 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
67f3f2d6 JB |
1087 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1088 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage(task.name!) != | |
1089 | null | |
94407def | 1090 | ) { |
67f3f2d6 | 1091 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
db0e38ee | 1092 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 1093 | workerNodeKey |
67f3f2d6 JB |
1094 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1095 | ].getTaskFunctionWorkerUsage(task.name!)! | |
5623b8d5 | 1096 | ++taskFunctionWorkerUsage.tasks.executing |
c329fd41 JB |
1097 | updateWaitTimeWorkerUsage( |
1098 | this.workerChoiceStrategyContext, | |
1099 | taskFunctionWorkerUsage, | |
1100 | task | |
1101 | ) | |
b558f6b5 | 1102 | } |
c97c7edb S |
1103 | } |
1104 | ||
c01733f1 | 1105 | /** |
2e81254d | 1106 | * Hook executed after the worker task execution. |
bf9549ae | 1107 | * Can be overridden. |
c01733f1 | 1108 | * |
501aea93 | 1109 | * @param workerNodeKey - The worker node key. |
38e795c1 | 1110 | * @param message - The received message. |
c01733f1 | 1111 | */ |
2e81254d | 1112 | protected afterTaskExecutionHook ( |
501aea93 | 1113 | workerNodeKey: number, |
2740a743 | 1114 | message: MessageValue<Response> |
bf9549ae | 1115 | ): void { |
c329fd41 | 1116 | let needWorkerChoiceStrategyUpdate = false |
c63a35a0 | 1117 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
efabc98d | 1118 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
94407def | 1119 | const workerUsage = this.workerNodes[workerNodeKey].usage |
c329fd41 JB |
1120 | updateTaskStatisticsWorkerUsage(workerUsage, message) |
1121 | updateRunTimeWorkerUsage( | |
1122 | this.workerChoiceStrategyContext, | |
1123 | workerUsage, | |
1124 | message | |
1125 | ) | |
1126 | updateEluWorkerUsage( | |
1127 | this.workerChoiceStrategyContext, | |
1128 | workerUsage, | |
1129 | message | |
1130 | ) | |
1131 | needWorkerChoiceStrategyUpdate = true | |
94407def JB |
1132 | } |
1133 | if ( | |
1134 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1135 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage( | |
67f3f2d6 JB |
1136 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1137 | message.taskPerformance!.name | |
94407def JB |
1138 | ) != null |
1139 | ) { | |
67f3f2d6 | 1140 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
db0e38ee | 1141 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 1142 | workerNodeKey |
67f3f2d6 JB |
1143 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1144 | ].getTaskFunctionWorkerUsage(message.taskPerformance!.name)! | |
c329fd41 JB |
1145 | updateTaskStatisticsWorkerUsage(taskFunctionWorkerUsage, message) |
1146 | updateRunTimeWorkerUsage( | |
1147 | this.workerChoiceStrategyContext, | |
1148 | taskFunctionWorkerUsage, | |
1149 | message | |
1150 | ) | |
1151 | updateEluWorkerUsage( | |
1152 | this.workerChoiceStrategyContext, | |
1153 | taskFunctionWorkerUsage, | |
1154 | message | |
1155 | ) | |
1156 | needWorkerChoiceStrategyUpdate = true | |
1157 | } | |
1158 | if (needWorkerChoiceStrategyUpdate) { | |
c63a35a0 | 1159 | this.workerChoiceStrategyContext?.update(workerNodeKey) |
b558f6b5 JB |
1160 | } |
1161 | } | |
1162 | ||
db0e38ee JB |
1163 | /** |
1164 | * Whether the worker node shall update its task function worker usage or not. | |
1165 | * | |
1166 | * @param workerNodeKey - The worker node key. | |
1167 | * @returns `true` if the worker node shall update its task function worker usage, `false` otherwise. | |
1168 | */ | |
1169 | private shallUpdateTaskFunctionWorkerUsage (workerNodeKey: number): boolean { | |
a5d15204 | 1170 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
b558f6b5 | 1171 | return ( |
1851fed0 | 1172 | workerInfo != null && |
6703b9f4 JB |
1173 | Array.isArray(workerInfo.taskFunctionNames) && |
1174 | workerInfo.taskFunctionNames.length > 2 | |
b558f6b5 | 1175 | ) |
f1c06930 JB |
1176 | } |
1177 | ||
280c2a77 | 1178 | /** |
f06e48d8 | 1179 | * Chooses a worker node for the next task. |
280c2a77 | 1180 | * |
6c6afb84 | 1181 | * The default worker choice strategy uses a round robin algorithm to distribute the tasks. |
280c2a77 | 1182 | * |
aa9eede8 | 1183 | * @returns The chosen worker node key |
280c2a77 | 1184 | */ |
6c6afb84 | 1185 | private chooseWorkerNode (): number { |
930dcf12 | 1186 | if (this.shallCreateDynamicWorker()) { |
aa9eede8 | 1187 | const workerNodeKey = this.createAndSetupDynamicWorkerNode() |
6c6afb84 | 1188 | if ( |
c63a35a0 JB |
1189 | this.workerChoiceStrategyContext?.getStrategyPolicy() |
1190 | .dynamicWorkerUsage === true | |
6c6afb84 | 1191 | ) { |
aa9eede8 | 1192 | return workerNodeKey |
6c6afb84 | 1193 | } |
17393ac8 | 1194 | } |
c63a35a0 | 1195 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
5d240702 | 1196 | return this.workerChoiceStrategyContext!.execute() |
930dcf12 JB |
1197 | } |
1198 | ||
6c6afb84 JB |
1199 | /** |
1200 | * Conditions for dynamic worker creation. | |
1201 | * | |
1202 | * @returns Whether to create a dynamic worker or not. | |
1203 | */ | |
9d9fb7b6 | 1204 | protected abstract shallCreateDynamicWorker (): boolean |
c97c7edb | 1205 | |
280c2a77 | 1206 | /** |
aa9eede8 | 1207 | * Sends a message to worker given its worker node key. |
280c2a77 | 1208 | * |
aa9eede8 | 1209 | * @param workerNodeKey - The worker node key. |
38e795c1 | 1210 | * @param message - The message. |
7d91a8cd | 1211 | * @param transferList - The optional array of transferable objects. |
280c2a77 S |
1212 | */ |
1213 | protected abstract sendToWorker ( | |
aa9eede8 | 1214 | workerNodeKey: number, |
7d91a8cd JB |
1215 | message: MessageValue<Data>, |
1216 | transferList?: TransferListItem[] | |
280c2a77 S |
1217 | ): void |
1218 | ||
4a6952ff | 1219 | /** |
aa9eede8 | 1220 | * Creates a new, completely set up worker node. |
4a6952ff | 1221 | * |
aa9eede8 | 1222 | * @returns New, completely set up worker node key. |
4a6952ff | 1223 | */ |
aa9eede8 | 1224 | protected createAndSetupWorkerNode (): number { |
c3719753 JB |
1225 | const workerNode = this.createWorkerNode() |
1226 | workerNode.registerWorkerEventHandler( | |
1227 | 'online', | |
1228 | this.opts.onlineHandler ?? EMPTY_FUNCTION | |
1229 | ) | |
1230 | workerNode.registerWorkerEventHandler( | |
1231 | 'message', | |
1232 | this.opts.messageHandler ?? EMPTY_FUNCTION | |
1233 | ) | |
1234 | workerNode.registerWorkerEventHandler( | |
1235 | 'error', | |
1236 | this.opts.errorHandler ?? EMPTY_FUNCTION | |
1237 | ) | |
1238 | workerNode.registerWorkerEventHandler('error', (error: Error) => { | |
07e0c9e5 | 1239 | workerNode.info.ready = false |
2a69b8c5 | 1240 | this.emitter?.emit(PoolEvents.error, error) |
15b176e0 | 1241 | if ( |
b6bfca01 | 1242 | this.started && |
711623b8 | 1243 | !this.destroying && |
9b38ab2d | 1244 | this.opts.restartWorkerOnError === true |
15b176e0 | 1245 | ) { |
07e0c9e5 | 1246 | if (workerNode.info.dynamic) { |
aa9eede8 | 1247 | this.createAndSetupDynamicWorkerNode() |
8a1260a3 | 1248 | } else { |
aa9eede8 | 1249 | this.createAndSetupWorkerNode() |
8a1260a3 | 1250 | } |
5baee0d7 | 1251 | } |
3c9123c7 JB |
1252 | if ( |
1253 | this.started && | |
1254 | !this.destroying && | |
1255 | this.opts.enableTasksQueue === true | |
1256 | ) { | |
9974369e | 1257 | this.redistributeQueuedTasks(this.workerNodes.indexOf(workerNode)) |
19dbc45b | 1258 | } |
b4f8aca8 JB |
1259 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
1260 | workerNode?.terminate().catch(error => { | |
07e0c9e5 JB |
1261 | this.emitter?.emit(PoolEvents.error, error) |
1262 | }) | |
5baee0d7 | 1263 | }) |
c3719753 JB |
1264 | workerNode.registerWorkerEventHandler( |
1265 | 'exit', | |
1266 | this.opts.exitHandler ?? EMPTY_FUNCTION | |
1267 | ) | |
1268 | workerNode.registerOnceWorkerEventHandler('exit', () => { | |
9974369e | 1269 | this.removeWorkerNode(workerNode) |
a974afa6 | 1270 | }) |
c3719753 | 1271 | const workerNodeKey = this.addWorkerNode(workerNode) |
aa9eede8 | 1272 | this.afterWorkerNodeSetup(workerNodeKey) |
aa9eede8 | 1273 | return workerNodeKey |
c97c7edb | 1274 | } |
be0676b3 | 1275 | |
930dcf12 | 1276 | /** |
aa9eede8 | 1277 | * Creates a new, completely set up dynamic worker node. |
930dcf12 | 1278 | * |
aa9eede8 | 1279 | * @returns New, completely set up dynamic worker node key. |
930dcf12 | 1280 | */ |
aa9eede8 JB |
1281 | protected createAndSetupDynamicWorkerNode (): number { |
1282 | const workerNodeKey = this.createAndSetupWorkerNode() | |
041dc05b | 1283 | this.registerWorkerMessageListener(workerNodeKey, message => { |
4d159167 | 1284 | this.checkMessageWorkerId(message) |
aa9eede8 JB |
1285 | const localWorkerNodeKey = this.getWorkerNodeKeyByWorkerId( |
1286 | message.workerId | |
aad6fb64 | 1287 | ) |
2b6b412f | 1288 | const workerUsage = this.workerNodes[localWorkerNodeKey]?.usage |
81c02522 | 1289 | // Kill message received from worker |
930dcf12 JB |
1290 | if ( |
1291 | isKillBehavior(KillBehaviors.HARD, message.kill) || | |
1e3214b6 | 1292 | (isKillBehavior(KillBehaviors.SOFT, message.kill) && |
7b56f532 | 1293 | ((this.opts.enableTasksQueue === false && |
aa9eede8 | 1294 | workerUsage.tasks.executing === 0) || |
7b56f532 | 1295 | (this.opts.enableTasksQueue === true && |
aa9eede8 JB |
1296 | workerUsage.tasks.executing === 0 && |
1297 | this.tasksQueueSize(localWorkerNodeKey) === 0))) | |
930dcf12 | 1298 | ) { |
f3827d5d | 1299 | // Flag the worker node as not ready immediately |
ae3ab61d | 1300 | this.flagWorkerNodeAsNotReady(localWorkerNodeKey) |
041dc05b | 1301 | this.destroyWorkerNode(localWorkerNodeKey).catch(error => { |
5270d253 JB |
1302 | this.emitter?.emit(PoolEvents.error, error) |
1303 | }) | |
930dcf12 JB |
1304 | } |
1305 | }) | |
aa9eede8 | 1306 | this.sendToWorker(workerNodeKey, { |
e9dd5b66 | 1307 | checkActive: true |
21f710aa | 1308 | }) |
72ae84a2 JB |
1309 | if (this.taskFunctions.size > 0) { |
1310 | for (const [taskFunctionName, taskFunction] of this.taskFunctions) { | |
1311 | this.sendTaskFunctionOperationToWorker(workerNodeKey, { | |
1312 | taskFunctionOperation: 'add', | |
1313 | taskFunctionName, | |
1314 | taskFunction: taskFunction.toString() | |
1315 | }).catch(error => { | |
1316 | this.emitter?.emit(PoolEvents.error, error) | |
1317 | }) | |
1318 | } | |
1319 | } | |
e44639e9 JB |
1320 | const workerNode = this.workerNodes[workerNodeKey] |
1321 | workerNode.info.dynamic = true | |
b1aae695 | 1322 | if ( |
c63a35a0 JB |
1323 | this.workerChoiceStrategyContext?.getStrategyPolicy() |
1324 | .dynamicWorkerReady === true || | |
1325 | this.workerChoiceStrategyContext?.getStrategyPolicy() | |
1326 | .dynamicWorkerUsage === true | |
b1aae695 | 1327 | ) { |
e44639e9 | 1328 | workerNode.info.ready = true |
b5e113f6 | 1329 | } |
33e6bb4c | 1330 | this.checkAndEmitDynamicWorkerCreationEvents() |
aa9eede8 | 1331 | return workerNodeKey |
930dcf12 JB |
1332 | } |
1333 | ||
a2ed5053 | 1334 | /** |
aa9eede8 | 1335 | * Registers a listener callback on the worker given its worker node key. |
a2ed5053 | 1336 | * |
aa9eede8 | 1337 | * @param workerNodeKey - The worker node key. |
a2ed5053 JB |
1338 | * @param listener - The message listener callback. |
1339 | */ | |
85aeb3f3 JB |
1340 | protected abstract registerWorkerMessageListener< |
1341 | Message extends Data | Response | |
aa9eede8 JB |
1342 | >( |
1343 | workerNodeKey: number, | |
1344 | listener: (message: MessageValue<Message>) => void | |
1345 | ): void | |
a2ed5053 | 1346 | |
ae036c3e JB |
1347 | /** |
1348 | * Registers once a listener callback on the worker given its worker node key. | |
1349 | * | |
1350 | * @param workerNodeKey - The worker node key. | |
1351 | * @param listener - The message listener callback. | |
1352 | */ | |
1353 | protected abstract registerOnceWorkerMessageListener< | |
1354 | Message extends Data | Response | |
1355 | >( | |
1356 | workerNodeKey: number, | |
1357 | listener: (message: MessageValue<Message>) => void | |
1358 | ): void | |
1359 | ||
1360 | /** | |
1361 | * Deregisters a listener callback on the worker given its worker node key. | |
1362 | * | |
1363 | * @param workerNodeKey - The worker node key. | |
1364 | * @param listener - The message listener callback. | |
1365 | */ | |
1366 | protected abstract deregisterWorkerMessageListener< | |
1367 | Message extends Data | Response | |
1368 | >( | |
1369 | workerNodeKey: number, | |
1370 | listener: (message: MessageValue<Message>) => void | |
1371 | ): void | |
1372 | ||
a2ed5053 | 1373 | /** |
aa9eede8 | 1374 | * Method hooked up after a worker node has been newly created. |
a2ed5053 JB |
1375 | * Can be overridden. |
1376 | * | |
aa9eede8 | 1377 | * @param workerNodeKey - The newly created worker node key. |
a2ed5053 | 1378 | */ |
aa9eede8 | 1379 | protected afterWorkerNodeSetup (workerNodeKey: number): void { |
a2ed5053 | 1380 | // Listen to worker messages. |
fcd39179 JB |
1381 | this.registerWorkerMessageListener( |
1382 | workerNodeKey, | |
3a776b6d | 1383 | this.workerMessageListener |
fcd39179 | 1384 | ) |
85aeb3f3 | 1385 | // Send the startup message to worker. |
aa9eede8 | 1386 | this.sendStartupMessageToWorker(workerNodeKey) |
9edb9717 JB |
1387 | // Send the statistics message to worker. |
1388 | this.sendStatisticsMessageToWorker(workerNodeKey) | |
72695f86 | 1389 | if (this.opts.enableTasksQueue === true) { |
dbd73092 | 1390 | if (this.opts.tasksQueueOptions?.taskStealing === true) { |
e1c2dba7 | 1391 | this.workerNodes[workerNodeKey].on( |
e44639e9 JB |
1392 | 'idle', |
1393 | this.handleWorkerNodeIdleEvent | |
9f95d5eb | 1394 | ) |
47352846 JB |
1395 | } |
1396 | if (this.opts.tasksQueueOptions?.tasksStealingOnBackPressure === true) { | |
e1c2dba7 | 1397 | this.workerNodes[workerNodeKey].on( |
b5e75be8 | 1398 | 'backPressure', |
e44639e9 | 1399 | this.handleWorkerNodeBackPressureEvent |
9f95d5eb | 1400 | ) |
47352846 | 1401 | } |
72695f86 | 1402 | } |
d2c73f82 JB |
1403 | } |
1404 | ||
85aeb3f3 | 1405 | /** |
aa9eede8 JB |
1406 | * Sends the startup message to worker given its worker node key. |
1407 | * | |
1408 | * @param workerNodeKey - The worker node key. | |
1409 | */ | |
1410 | protected abstract sendStartupMessageToWorker (workerNodeKey: number): void | |
1411 | ||
1412 | /** | |
9edb9717 | 1413 | * Sends the statistics message to worker given its worker node key. |
85aeb3f3 | 1414 | * |
aa9eede8 | 1415 | * @param workerNodeKey - The worker node key. |
85aeb3f3 | 1416 | */ |
9edb9717 | 1417 | private sendStatisticsMessageToWorker (workerNodeKey: number): void { |
aa9eede8 JB |
1418 | this.sendToWorker(workerNodeKey, { |
1419 | statistics: { | |
1420 | runTime: | |
c63a35a0 | 1421 | this.workerChoiceStrategyContext?.getTaskStatisticsRequirements() |
f4d0a470 | 1422 | .runTime.aggregate ?? false, |
c63a35a0 | 1423 | elu: |
f4d0a470 | 1424 | this.workerChoiceStrategyContext?.getTaskStatisticsRequirements().elu |
c63a35a0 | 1425 | .aggregate ?? false |
72ae84a2 | 1426 | } |
aa9eede8 JB |
1427 | }) |
1428 | } | |
a2ed5053 | 1429 | |
5eb72b9e JB |
1430 | private cannotStealTask (): boolean { |
1431 | return this.workerNodes.length <= 1 || this.info.queuedTasks === 0 | |
1432 | } | |
1433 | ||
42c677c1 JB |
1434 | private handleTask (workerNodeKey: number, task: Task<Data>): void { |
1435 | if (this.shallExecuteTask(workerNodeKey)) { | |
1436 | this.executeTask(workerNodeKey, task) | |
1437 | } else { | |
1438 | this.enqueueTask(workerNodeKey, task) | |
1439 | } | |
1440 | } | |
1441 | ||
a2ed5053 | 1442 | private redistributeQueuedTasks (workerNodeKey: number): void { |
0d033538 | 1443 | if (workerNodeKey === -1 || this.cannotStealTask()) { |
cb71d660 JB |
1444 | return |
1445 | } | |
a2ed5053 | 1446 | while (this.tasksQueueSize(workerNodeKey) > 0) { |
f201a0cd JB |
1447 | const destinationWorkerNodeKey = this.workerNodes.reduce( |
1448 | (minWorkerNodeKey, workerNode, workerNodeKey, workerNodes) => { | |
852ed3e4 JB |
1449 | return workerNode.info.ready && |
1450 | workerNode.usage.tasks.queued < | |
1451 | workerNodes[minWorkerNodeKey].usage.tasks.queued | |
f201a0cd JB |
1452 | ? workerNodeKey |
1453 | : minWorkerNodeKey | |
1454 | }, | |
1455 | 0 | |
1456 | ) | |
42c677c1 JB |
1457 | this.handleTask( |
1458 | destinationWorkerNodeKey, | |
67f3f2d6 JB |
1459 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1460 | this.dequeueTask(workerNodeKey)! | |
42c677c1 | 1461 | ) |
dd951876 JB |
1462 | } |
1463 | } | |
1464 | ||
b1838604 JB |
1465 | private updateTaskStolenStatisticsWorkerUsage ( |
1466 | workerNodeKey: number, | |
b1838604 JB |
1467 | taskName: string |
1468 | ): void { | |
1a880eca | 1469 | const workerNode = this.workerNodes[workerNodeKey] |
c63a35a0 | 1470 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
efabc98d | 1471 | if (workerNode?.usage != null) { |
b1838604 JB |
1472 | ++workerNode.usage.tasks.stolen |
1473 | } | |
1474 | if ( | |
1475 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1476 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1477 | ) { | |
67f3f2d6 JB |
1478 | const taskFunctionWorkerUsage = |
1479 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion | |
1480 | workerNode.getTaskFunctionWorkerUsage(taskName)! | |
b1838604 JB |
1481 | ++taskFunctionWorkerUsage.tasks.stolen |
1482 | } | |
1483 | } | |
1484 | ||
463226a4 | 1485 | private updateTaskSequentiallyStolenStatisticsWorkerUsage ( |
f1f77f45 | 1486 | workerNodeKey: number |
463226a4 JB |
1487 | ): void { |
1488 | const workerNode = this.workerNodes[workerNodeKey] | |
c63a35a0 | 1489 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
efabc98d | 1490 | if (workerNode?.usage != null) { |
463226a4 JB |
1491 | ++workerNode.usage.tasks.sequentiallyStolen |
1492 | } | |
f1f77f45 JB |
1493 | } |
1494 | ||
1495 | private updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage ( | |
1496 | workerNodeKey: number, | |
1497 | taskName: string | |
1498 | ): void { | |
1499 | const workerNode = this.workerNodes[workerNodeKey] | |
463226a4 JB |
1500 | if ( |
1501 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1502 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1503 | ) { | |
67f3f2d6 JB |
1504 | const taskFunctionWorkerUsage = |
1505 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion | |
1506 | workerNode.getTaskFunctionWorkerUsage(taskName)! | |
463226a4 JB |
1507 | ++taskFunctionWorkerUsage.tasks.sequentiallyStolen |
1508 | } | |
1509 | } | |
1510 | ||
1511 | private resetTaskSequentiallyStolenStatisticsWorkerUsage ( | |
f1f77f45 | 1512 | workerNodeKey: number |
463226a4 JB |
1513 | ): void { |
1514 | const workerNode = this.workerNodes[workerNodeKey] | |
c63a35a0 | 1515 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
efabc98d | 1516 | if (workerNode?.usage != null) { |
463226a4 JB |
1517 | workerNode.usage.tasks.sequentiallyStolen = 0 |
1518 | } | |
f1f77f45 JB |
1519 | } |
1520 | ||
1521 | private resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage ( | |
1522 | workerNodeKey: number, | |
1523 | taskName: string | |
1524 | ): void { | |
1525 | const workerNode = this.workerNodes[workerNodeKey] | |
463226a4 JB |
1526 | if ( |
1527 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1528 | workerNode.getTaskFunctionWorkerUsage(taskName) != null | |
1529 | ) { | |
67f3f2d6 JB |
1530 | const taskFunctionWorkerUsage = |
1531 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion | |
1532 | workerNode.getTaskFunctionWorkerUsage(taskName)! | |
463226a4 JB |
1533 | taskFunctionWorkerUsage.tasks.sequentiallyStolen = 0 |
1534 | } | |
1535 | } | |
1536 | ||
e44639e9 | 1537 | private readonly handleWorkerNodeIdleEvent = ( |
e1c2dba7 | 1538 | eventDetail: WorkerNodeEventDetail, |
463226a4 | 1539 | previousStolenTask?: Task<Data> |
9f95d5eb | 1540 | ): void => { |
e1c2dba7 | 1541 | const { workerNodeKey } = eventDetail |
463226a4 JB |
1542 | if (workerNodeKey == null) { |
1543 | throw new Error( | |
c63a35a0 | 1544 | "WorkerNode event detail 'workerNodeKey' property must be defined" |
463226a4 JB |
1545 | ) |
1546 | } | |
c63a35a0 | 1547 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
5eb72b9e JB |
1548 | if ( |
1549 | this.cannotStealTask() || | |
c63a35a0 JB |
1550 | (this.info.stealingWorkerNodes ?? 0) > |
1551 | Math.floor(this.workerNodes.length / 2) | |
5eb72b9e | 1552 | ) { |
1851fed0 | 1553 | if (workerInfo != null && previousStolenTask != null) { |
c63a35a0 | 1554 | workerInfo.stealing = false |
5eb72b9e JB |
1555 | } |
1556 | return | |
1557 | } | |
463226a4 JB |
1558 | const workerNodeTasksUsage = this.workerNodes[workerNodeKey].usage.tasks |
1559 | if ( | |
1851fed0 | 1560 | workerInfo != null && |
463226a4 JB |
1561 | previousStolenTask != null && |
1562 | workerNodeTasksUsage.sequentiallyStolen > 0 && | |
1563 | (workerNodeTasksUsage.executing > 0 || | |
1564 | this.tasksQueueSize(workerNodeKey) > 0) | |
1565 | ) { | |
c63a35a0 | 1566 | workerInfo.stealing = false |
67f3f2d6 | 1567 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
369179f6 | 1568 | for (const taskName of workerInfo.taskFunctionNames!) { |
f1f77f45 JB |
1569 | this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( |
1570 | workerNodeKey, | |
1571 | taskName | |
1572 | ) | |
1573 | } | |
1574 | this.resetTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey) | |
463226a4 JB |
1575 | return |
1576 | } | |
1851fed0 JB |
1577 | if (workerInfo == null) { |
1578 | throw new Error( | |
1579 | `Worker node with key '${workerNodeKey}' not found in pool` | |
1580 | ) | |
1581 | } | |
c63a35a0 | 1582 | workerInfo.stealing = true |
463226a4 | 1583 | const stolenTask = this.workerNodeStealTask(workerNodeKey) |
f1f77f45 JB |
1584 | if ( |
1585 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
1586 | stolenTask != null | |
1587 | ) { | |
67f3f2d6 | 1588 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
f1f77f45 JB |
1589 | const taskFunctionTasksWorkerUsage = this.workerNodes[ |
1590 | workerNodeKey | |
67f3f2d6 JB |
1591 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1592 | ].getTaskFunctionWorkerUsage(stolenTask.name!)!.tasks | |
f1f77f45 JB |
1593 | if ( |
1594 | taskFunctionTasksWorkerUsage.sequentiallyStolen === 0 || | |
1595 | (previousStolenTask != null && | |
1596 | previousStolenTask.name === stolenTask.name && | |
1597 | taskFunctionTasksWorkerUsage.sequentiallyStolen > 0) | |
1598 | ) { | |
1599 | this.updateTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( | |
1600 | workerNodeKey, | |
67f3f2d6 JB |
1601 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1602 | stolenTask.name! | |
f1f77f45 JB |
1603 | ) |
1604 | } else { | |
1605 | this.resetTaskSequentiallyStolenStatisticsTaskFunctionWorkerUsage( | |
1606 | workerNodeKey, | |
67f3f2d6 JB |
1607 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1608 | stolenTask.name! | |
f1f77f45 JB |
1609 | ) |
1610 | } | |
1611 | } | |
463226a4 JB |
1612 | sleep(exponentialDelay(workerNodeTasksUsage.sequentiallyStolen)) |
1613 | .then(() => { | |
e44639e9 | 1614 | this.handleWorkerNodeIdleEvent(eventDetail, stolenTask) |
463226a4 JB |
1615 | return undefined |
1616 | }) | |
2e8cfbb7 JB |
1617 | .catch(error => { |
1618 | this.emitter?.emit(PoolEvents.error, error) | |
1619 | }) | |
463226a4 JB |
1620 | } |
1621 | ||
1622 | private readonly workerNodeStealTask = ( | |
1623 | workerNodeKey: number | |
1624 | ): Task<Data> | undefined => { | |
dd951876 | 1625 | const workerNodes = this.workerNodes |
a6b3272b | 1626 | .slice() |
dd951876 JB |
1627 | .sort( |
1628 | (workerNodeA, workerNodeB) => | |
1629 | workerNodeB.usage.tasks.queued - workerNodeA.usage.tasks.queued | |
1630 | ) | |
f201a0cd | 1631 | const sourceWorkerNode = workerNodes.find( |
463226a4 JB |
1632 | (sourceWorkerNode, sourceWorkerNodeKey) => |
1633 | sourceWorkerNode.info.ready && | |
5eb72b9e | 1634 | !sourceWorkerNode.info.stealing && |
463226a4 JB |
1635 | sourceWorkerNodeKey !== workerNodeKey && |
1636 | sourceWorkerNode.usage.tasks.queued > 0 | |
f201a0cd JB |
1637 | ) |
1638 | if (sourceWorkerNode != null) { | |
67f3f2d6 JB |
1639 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1640 | const task = sourceWorkerNode.popTask()! | |
42c677c1 | 1641 | this.handleTask(workerNodeKey, task) |
f1f77f45 | 1642 | this.updateTaskSequentiallyStolenStatisticsWorkerUsage(workerNodeKey) |
67f3f2d6 JB |
1643 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1644 | this.updateTaskStolenStatisticsWorkerUsage(workerNodeKey, task.name!) | |
463226a4 | 1645 | return task |
72695f86 JB |
1646 | } |
1647 | } | |
1648 | ||
e44639e9 | 1649 | private readonly handleWorkerNodeBackPressureEvent = ( |
e1c2dba7 | 1650 | eventDetail: WorkerNodeEventDetail |
9f95d5eb | 1651 | ): void => { |
5eb72b9e JB |
1652 | if ( |
1653 | this.cannotStealTask() || | |
c63a35a0 JB |
1654 | (this.info.stealingWorkerNodes ?? 0) > |
1655 | Math.floor(this.workerNodes.length / 2) | |
5eb72b9e | 1656 | ) { |
cb71d660 JB |
1657 | return |
1658 | } | |
e1c2dba7 | 1659 | const { workerId } = eventDetail |
f778c355 | 1660 | const sizeOffset = 1 |
67f3f2d6 JB |
1661 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1662 | if (this.opts.tasksQueueOptions!.size! <= 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 && |
5eb72b9e | 1677 | !workerNode.info.stealing && |
b5e75be8 | 1678 | workerNode.info.id !== workerId && |
0bc68267 | 1679 | workerNode.usage.tasks.queued < |
67f3f2d6 JB |
1680 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1681 | this.opts.tasksQueueOptions!.size! - sizeOffset | |
72695f86 | 1682 | ) { |
c63a35a0 | 1683 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
1851fed0 JB |
1684 | if (workerInfo == null) { |
1685 | throw new Error( | |
1686 | `Worker node with key '${workerNodeKey}' not found in pool` | |
1687 | ) | |
1688 | } | |
c63a35a0 | 1689 | workerInfo.stealing = true |
67f3f2d6 JB |
1690 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1691 | const task = sourceWorkerNode.popTask()! | |
42c677c1 | 1692 | this.handleTask(workerNodeKey, task) |
67f3f2d6 JB |
1693 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1694 | this.updateTaskStolenStatisticsWorkerUsage(workerNodeKey, task.name!) | |
c63a35a0 | 1695 | workerInfo.stealing = false |
10ecf8fd | 1696 | } |
a2ed5053 JB |
1697 | } |
1698 | } | |
1699 | ||
be0676b3 | 1700 | /** |
fcd39179 | 1701 | * This method is the message listener registered on each worker. |
be0676b3 | 1702 | */ |
3a776b6d JB |
1703 | protected readonly workerMessageListener = ( |
1704 | message: MessageValue<Response> | |
1705 | ): void => { | |
fcd39179 | 1706 | this.checkMessageWorkerId(message) |
b641345c JB |
1707 | const { workerId, ready, taskId, taskFunctionNames } = message |
1708 | if (ready != null && taskFunctionNames != null) { | |
fcd39179 JB |
1709 | // Worker ready response received from worker |
1710 | this.handleWorkerReadyResponse(message) | |
b641345c | 1711 | } else if (taskId != null) { |
fcd39179 JB |
1712 | // Task execution response received from worker |
1713 | this.handleTaskExecutionResponse(message) | |
b641345c | 1714 | } else if (taskFunctionNames != null) { |
fcd39179 | 1715 | // Task function names message received from worker |
1851fed0 | 1716 | const workerInfo = this.getWorkerInfo( |
b641345c | 1717 | this.getWorkerNodeKeyByWorkerId(workerId) |
1851fed0 JB |
1718 | ) |
1719 | if (workerInfo != null) { | |
1720 | workerInfo.taskFunctionNames = taskFunctionNames | |
1721 | } | |
6b272951 JB |
1722 | } |
1723 | } | |
1724 | ||
8e8d9101 JB |
1725 | private checkAndEmitReadyEvent (): void { |
1726 | if (!this.readyEventEmitted && this.ready) { | |
1727 | this.emitter?.emit(PoolEvents.ready, this.info) | |
1728 | this.readyEventEmitted = true | |
1729 | } | |
1730 | } | |
1731 | ||
10e2aa7e | 1732 | private handleWorkerReadyResponse (message: MessageValue<Response>): void { |
463226a4 | 1733 | const { workerId, ready, taskFunctionNames } = message |
e44639e9 | 1734 | if (ready == null || !ready) { |
c63a35a0 | 1735 | throw new Error(`Worker ${workerId} failed to initialize`) |
f05ed93c | 1736 | } |
e44639e9 JB |
1737 | const workerNode = |
1738 | this.workerNodes[this.getWorkerNodeKeyByWorkerId(workerId)] | |
1739 | workerNode.info.ready = ready | |
1740 | workerNode.info.taskFunctionNames = taskFunctionNames | |
8e8d9101 | 1741 | this.checkAndEmitReadyEvent() |
6b272951 JB |
1742 | } |
1743 | ||
1744 | private handleTaskExecutionResponse (message: MessageValue<Response>): void { | |
463226a4 | 1745 | const { workerId, taskId, workerError, data } = message |
67f3f2d6 JB |
1746 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1747 | const promiseResponse = this.promiseResponseMap.get(taskId!) | |
6b272951 | 1748 | if (promiseResponse != null) { |
f18fd12b | 1749 | const { resolve, reject, workerNodeKey, asyncResource } = promiseResponse |
9b358e72 | 1750 | const workerNode = this.workerNodes[workerNodeKey] |
6703b9f4 JB |
1751 | if (workerError != null) { |
1752 | this.emitter?.emit(PoolEvents.taskError, workerError) | |
f18fd12b JB |
1753 | asyncResource != null |
1754 | ? asyncResource.runInAsyncScope( | |
1755 | reject, | |
1756 | this.emitter, | |
1757 | workerError.message | |
1758 | ) | |
1759 | : reject(workerError.message) | |
6b272951 | 1760 | } else { |
f18fd12b JB |
1761 | asyncResource != null |
1762 | ? asyncResource.runInAsyncScope(resolve, this.emitter, data) | |
1763 | : resolve(data as Response) | |
6b272951 | 1764 | } |
f18fd12b | 1765 | asyncResource?.emitDestroy() |
501aea93 | 1766 | this.afterTaskExecutionHook(workerNodeKey, message) |
67f3f2d6 JB |
1767 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1768 | this.promiseResponseMap.delete(taskId!) | |
cdaecaee JB |
1769 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition |
1770 | workerNode?.emit('taskFinished', taskId) | |
16d7e943 JB |
1771 | if ( |
1772 | this.opts.enableTasksQueue === true && | |
1773 | !this.destroying && | |
1774 | // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition | |
1775 | workerNode != null | |
1776 | ) { | |
9b358e72 | 1777 | const workerNodeTasksUsage = workerNode.usage.tasks |
463226a4 JB |
1778 | if ( |
1779 | this.tasksQueueSize(workerNodeKey) > 0 && | |
1780 | workerNodeTasksUsage.executing < | |
67f3f2d6 JB |
1781 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1782 | this.opts.tasksQueueOptions!.concurrency! | |
463226a4 | 1783 | ) { |
67f3f2d6 JB |
1784 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1785 | this.executeTask(workerNodeKey, this.dequeueTask(workerNodeKey)!) | |
463226a4 JB |
1786 | } |
1787 | if ( | |
1788 | workerNodeTasksUsage.executing === 0 && | |
1789 | this.tasksQueueSize(workerNodeKey) === 0 && | |
1790 | workerNodeTasksUsage.sequentiallyStolen === 0 | |
1791 | ) { | |
e44639e9 | 1792 | workerNode.emit('idle', { |
7f0e1334 | 1793 | workerId, |
e1c2dba7 JB |
1794 | workerNodeKey |
1795 | }) | |
463226a4 | 1796 | } |
be0676b3 APA |
1797 | } |
1798 | } | |
be0676b3 | 1799 | } |
7c0ba920 | 1800 | |
a1763c54 | 1801 | private checkAndEmitTaskExecutionEvents (): void { |
33e6bb4c JB |
1802 | if (this.busy) { |
1803 | this.emitter?.emit(PoolEvents.busy, this.info) | |
a1763c54 JB |
1804 | } |
1805 | } | |
1806 | ||
1807 | private checkAndEmitTaskQueuingEvents (): void { | |
1808 | if (this.hasBackPressure()) { | |
1809 | this.emitter?.emit(PoolEvents.backPressure, this.info) | |
164d950a JB |
1810 | } |
1811 | } | |
1812 | ||
d0878034 JB |
1813 | /** |
1814 | * Emits dynamic worker creation events. | |
1815 | */ | |
1816 | protected abstract checkAndEmitDynamicWorkerCreationEvents (): void | |
33e6bb4c | 1817 | |
8a1260a3 | 1818 | /** |
aa9eede8 | 1819 | * Gets the worker information given its worker node key. |
8a1260a3 JB |
1820 | * |
1821 | * @param workerNodeKey - The worker node key. | |
3f09ed9f | 1822 | * @returns The worker information. |
8a1260a3 | 1823 | */ |
1851fed0 JB |
1824 | protected getWorkerInfo (workerNodeKey: number): WorkerInfo | undefined { |
1825 | return this.workerNodes[workerNodeKey]?.info | |
e221309a JB |
1826 | } |
1827 | ||
a05c10de | 1828 | /** |
c3719753 | 1829 | * Creates a worker node. |
ea7a90d3 | 1830 | * |
c3719753 | 1831 | * @returns The created worker node. |
ea7a90d3 | 1832 | */ |
c3719753 | 1833 | private createWorkerNode (): IWorkerNode<Worker, Data> { |
671d5154 | 1834 | const workerNode = new WorkerNode<Worker, Data>( |
c3719753 JB |
1835 | this.worker, |
1836 | this.filePath, | |
1837 | { | |
1838 | env: this.opts.env, | |
1839 | workerOptions: this.opts.workerOptions, | |
1840 | tasksQueueBackPressureSize: | |
32b141fd | 1841 | this.opts.tasksQueueOptions?.size ?? |
26ce26ca JB |
1842 | getDefaultTasksQueueOptions( |
1843 | this.maximumNumberOfWorkers ?? this.minimumNumberOfWorkers | |
1844 | ).size | |
c3719753 | 1845 | } |
671d5154 | 1846 | ) |
b97d82d8 | 1847 | // Flag the worker node as ready at pool startup. |
d2c73f82 JB |
1848 | if (this.starting) { |
1849 | workerNode.info.ready = true | |
1850 | } | |
c3719753 JB |
1851 | return workerNode |
1852 | } | |
1853 | ||
1854 | /** | |
1855 | * Adds the given worker node in the pool worker nodes. | |
1856 | * | |
1857 | * @param workerNode - The worker node. | |
1858 | * @returns The added worker node key. | |
1859 | * @throws {@link https://nodejs.org/api/errors.html#class-error} If the added worker node is not found. | |
1860 | */ | |
1861 | private addWorkerNode (workerNode: IWorkerNode<Worker, Data>): number { | |
aa9eede8 | 1862 | this.workerNodes.push(workerNode) |
c3719753 | 1863 | const workerNodeKey = this.workerNodes.indexOf(workerNode) |
aa9eede8 | 1864 | if (workerNodeKey === -1) { |
86ed0598 | 1865 | throw new Error('Worker added not found in worker nodes') |
aa9eede8 JB |
1866 | } |
1867 | return workerNodeKey | |
ea7a90d3 | 1868 | } |
c923ce56 | 1869 | |
8e8d9101 JB |
1870 | private checkAndEmitEmptyEvent (): void { |
1871 | if (this.empty) { | |
1872 | this.emitter?.emit(PoolEvents.empty, this.info) | |
1873 | this.readyEventEmitted = false | |
1874 | } | |
1875 | } | |
1876 | ||
51fe3d3c | 1877 | /** |
9974369e | 1878 | * Removes the worker node from the pool worker nodes. |
51fe3d3c | 1879 | * |
9974369e | 1880 | * @param workerNode - The worker node. |
51fe3d3c | 1881 | */ |
9974369e JB |
1882 | private removeWorkerNode (workerNode: IWorkerNode<Worker, Data>): void { |
1883 | const workerNodeKey = this.workerNodes.indexOf(workerNode) | |
1f68cede JB |
1884 | if (workerNodeKey !== -1) { |
1885 | this.workerNodes.splice(workerNodeKey, 1) | |
c63a35a0 | 1886 | this.workerChoiceStrategyContext?.remove(workerNodeKey) |
1f68cede | 1887 | } |
8e8d9101 | 1888 | this.checkAndEmitEmptyEvent() |
51fe3d3c | 1889 | } |
adc3c320 | 1890 | |
ae3ab61d | 1891 | protected flagWorkerNodeAsNotReady (workerNodeKey: number): void { |
1851fed0 JB |
1892 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
1893 | if (workerInfo != null) { | |
1894 | workerInfo.ready = false | |
1895 | } | |
ae3ab61d JB |
1896 | } |
1897 | ||
9e844245 JB |
1898 | private hasBackPressure (): boolean { |
1899 | return ( | |
1900 | this.opts.enableTasksQueue === true && | |
1901 | this.workerNodes.findIndex( | |
041dc05b | 1902 | workerNode => !workerNode.hasBackPressure() |
a1763c54 | 1903 | ) === -1 |
9e844245 | 1904 | ) |
e2b31e32 JB |
1905 | } |
1906 | ||
b0a4db63 | 1907 | /** |
aa9eede8 | 1908 | * Executes the given task on the worker given its worker node key. |
b0a4db63 | 1909 | * |
aa9eede8 | 1910 | * @param workerNodeKey - The worker node key. |
b0a4db63 JB |
1911 | * @param task - The task to execute. |
1912 | */ | |
2e81254d | 1913 | private executeTask (workerNodeKey: number, task: Task<Data>): void { |
1c6fe997 | 1914 | this.beforeTaskExecutionHook(workerNodeKey, task) |
bbfa38a2 | 1915 | this.sendToWorker(workerNodeKey, task, task.transferList) |
a1763c54 | 1916 | this.checkAndEmitTaskExecutionEvents() |
2e81254d JB |
1917 | } |
1918 | ||
f9f00b5f | 1919 | private enqueueTask (workerNodeKey: number, task: Task<Data>): number { |
a1763c54 JB |
1920 | const tasksQueueSize = this.workerNodes[workerNodeKey].enqueueTask(task) |
1921 | this.checkAndEmitTaskQueuingEvents() | |
1922 | return tasksQueueSize | |
adc3c320 JB |
1923 | } |
1924 | ||
416fd65c | 1925 | private dequeueTask (workerNodeKey: number): Task<Data> | undefined { |
4b628b48 | 1926 | return this.workerNodes[workerNodeKey].dequeueTask() |
adc3c320 JB |
1927 | } |
1928 | ||
416fd65c | 1929 | private tasksQueueSize (workerNodeKey: number): number { |
4b628b48 | 1930 | return this.workerNodes[workerNodeKey].tasksQueueSize() |
df593701 JB |
1931 | } |
1932 | ||
87347ea8 JB |
1933 | protected flushTasksQueue (workerNodeKey: number): number { |
1934 | let flushedTasks = 0 | |
920278a2 | 1935 | while (this.tasksQueueSize(workerNodeKey) > 0) { |
67f3f2d6 JB |
1936 | // eslint-disable-next-line @typescript-eslint/no-non-null-assertion |
1937 | this.executeTask(workerNodeKey, this.dequeueTask(workerNodeKey)!) | |
87347ea8 | 1938 | ++flushedTasks |
ff733df7 | 1939 | } |
4b628b48 | 1940 | this.workerNodes[workerNodeKey].clearTasksQueue() |
87347ea8 | 1941 | return flushedTasks |
ff733df7 JB |
1942 | } |
1943 | ||
ef41a6e6 JB |
1944 | private flushTasksQueues (): void { |
1945 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
1946 | this.flushTasksQueue(workerNodeKey) | |
1947 | } | |
1948 | } | |
c97c7edb | 1949 | } |