Commit | Line | Data |
---|---|---|
2845f2a5 | 1 | import { randomUUID } from 'node:crypto' |
62c15a68 | 2 | import { performance } from 'node:perf_hooks' |
3d6dd312 | 3 | import { existsSync } from 'node:fs' |
7d91a8cd | 4 | import { type TransferListItem } from 'node:worker_threads' |
5c4d16da JB |
5 | import type { |
6 | MessageValue, | |
7 | PromiseResponseWrapper, | |
ff3f866a JB |
8 | Task, |
9 | Writable | |
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, |
59317253 | 16 | isKillBehavior, |
0d80593b | 17 | isPlainObject, |
afe0d5bf | 18 | median, |
e4f20deb JB |
19 | round, |
20 | updateMeasurementStatistics | |
bbeadd16 | 21 | } from '../utils' |
59317253 | 22 | import { KillBehaviors } from '../worker/worker-options' |
c4855468 | 23 | import { |
65d7a1c9 | 24 | type IPool, |
7c5a1080 | 25 | PoolEmitter, |
c4855468 | 26 | PoolEvents, |
6b27d407 | 27 | type PoolInfo, |
c4855468 | 28 | type PoolOptions, |
6b27d407 JB |
29 | type PoolType, |
30 | PoolTypes, | |
4b628b48 | 31 | type TasksQueueOptions |
c4855468 | 32 | } from './pool' |
bbfa38a2 JB |
33 | import type { |
34 | IWorker, | |
35 | IWorkerNode, | |
36 | WorkerInfo, | |
37 | WorkerType, | |
38 | WorkerUsage | |
e102732c | 39 | } from './worker' |
a35560ba | 40 | import { |
008512c7 | 41 | type MeasurementStatisticsRequirements, |
f0d7f803 | 42 | Measurements, |
a35560ba | 43 | WorkerChoiceStrategies, |
a20f0ba5 JB |
44 | type WorkerChoiceStrategy, |
45 | type WorkerChoiceStrategyOptions | |
bdaf31cd JB |
46 | } from './selection-strategies/selection-strategies-types' |
47 | import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context' | |
92b1feaa | 48 | import { version } from './version' |
4b628b48 | 49 | import { WorkerNode } from './worker-node' |
23ccf9d7 | 50 | |
729c563d | 51 | /** |
ea7a90d3 | 52 | * Base class that implements some shared logic for all poolifier pools. |
729c563d | 53 | * |
38e795c1 | 54 | * @typeParam Worker - Type of worker which manages this pool. |
e102732c JB |
55 | * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data. |
56 | * @typeParam Response - Type of execution response. This can only be structured-cloneable data. | |
729c563d | 57 | */ |
c97c7edb | 58 | export abstract class AbstractPool< |
f06e48d8 | 59 | Worker extends IWorker, |
d3c8a1a8 S |
60 | Data = unknown, |
61 | Response = unknown | |
c4855468 | 62 | > implements IPool<Worker, Data, Response> { |
afc003b2 | 63 | /** @inheritDoc */ |
4b628b48 | 64 | public readonly workerNodes: Array<IWorkerNode<Worker, Data>> = [] |
4a6952ff | 65 | |
afc003b2 | 66 | /** @inheritDoc */ |
7c0ba920 JB |
67 | public readonly emitter?: PoolEmitter |
68 | ||
be0676b3 | 69 | /** |
52b71763 | 70 | * The task execution response promise map. |
be0676b3 | 71 | * |
2740a743 | 72 | * - `key`: The message id of each submitted task. |
a3445496 | 73 | * - `value`: An object that contains the worker, the execution response promise resolve and reject callbacks. |
be0676b3 | 74 | * |
a3445496 | 75 | * When we receive a message from the worker, we get a map entry with the promise resolve/reject bound to the message id. |
be0676b3 | 76 | */ |
501aea93 JB |
77 | protected promiseResponseMap: Map<string, PromiseResponseWrapper<Response>> = |
78 | new Map<string, PromiseResponseWrapper<Response>>() | |
c97c7edb | 79 | |
a35560ba | 80 | /** |
51fe3d3c | 81 | * Worker choice strategy context referencing a worker choice algorithm implementation. |
a35560ba S |
82 | */ |
83 | protected workerChoiceStrategyContext: WorkerChoiceStrategyContext< | |
78cea37e JB |
84 | Worker, |
85 | Data, | |
86 | Response | |
a35560ba S |
87 | > |
88 | ||
8735b4e5 JB |
89 | /** |
90 | * Dynamic pool maximum size property placeholder. | |
91 | */ | |
92 | protected readonly max?: number | |
93 | ||
075e51d1 | 94 | /** |
adc9cc64 | 95 | * Whether the pool is starting or not. |
075e51d1 JB |
96 | */ |
97 | private readonly starting: boolean | |
15b176e0 JB |
98 | /** |
99 | * Whether the pool is started or not. | |
100 | */ | |
101 | private started: boolean | |
afe0d5bf JB |
102 | /** |
103 | * The start timestamp of the pool. | |
104 | */ | |
105 | private readonly startTimestamp | |
106 | ||
729c563d S |
107 | /** |
108 | * Constructs a new poolifier pool. | |
109 | * | |
38e795c1 | 110 | * @param numberOfWorkers - Number of workers that this pool should manage. |
029715f0 | 111 | * @param filePath - Path to the worker file. |
38e795c1 | 112 | * @param opts - Options for the pool. |
729c563d | 113 | */ |
c97c7edb | 114 | public constructor ( |
b4213b7f JB |
115 | protected readonly numberOfWorkers: number, |
116 | protected readonly filePath: string, | |
117 | protected readonly opts: PoolOptions<Worker> | |
c97c7edb | 118 | ) { |
78cea37e | 119 | if (!this.isMain()) { |
04f45163 | 120 | throw new Error( |
8c6d4acf | 121 | 'Cannot start a pool from a worker with the same type as the pool' |
04f45163 | 122 | ) |
c97c7edb | 123 | } |
8d3782fa | 124 | this.checkNumberOfWorkers(this.numberOfWorkers) |
c510fea7 | 125 | this.checkFilePath(this.filePath) |
7c0ba920 | 126 | this.checkPoolOptions(this.opts) |
1086026a | 127 | |
7254e419 JB |
128 | this.chooseWorkerNode = this.chooseWorkerNode.bind(this) |
129 | this.executeTask = this.executeTask.bind(this) | |
130 | this.enqueueTask = this.enqueueTask.bind(this) | |
1086026a | 131 | |
6bd72cd0 | 132 | if (this.opts.enableEvents === true) { |
7c0ba920 JB |
133 | this.emitter = new PoolEmitter() |
134 | } | |
d59df138 JB |
135 | this.workerChoiceStrategyContext = new WorkerChoiceStrategyContext< |
136 | Worker, | |
137 | Data, | |
138 | Response | |
da309861 JB |
139 | >( |
140 | this, | |
141 | this.opts.workerChoiceStrategy, | |
142 | this.opts.workerChoiceStrategyOptions | |
143 | ) | |
b6b32453 JB |
144 | |
145 | this.setupHook() | |
146 | ||
075e51d1 | 147 | this.starting = true |
e761c033 | 148 | this.startPool() |
075e51d1 | 149 | this.starting = false |
15b176e0 | 150 | this.started = true |
afe0d5bf JB |
151 | |
152 | this.startTimestamp = performance.now() | |
c97c7edb S |
153 | } |
154 | ||
a35560ba | 155 | private checkFilePath (filePath: string): void { |
ffcbbad8 JB |
156 | if ( |
157 | filePath == null || | |
3d6dd312 | 158 | typeof filePath !== 'string' || |
ffcbbad8 JB |
159 | (typeof filePath === 'string' && filePath.trim().length === 0) |
160 | ) { | |
c510fea7 APA |
161 | throw new Error('Please specify a file with a worker implementation') |
162 | } | |
3d6dd312 JB |
163 | if (!existsSync(filePath)) { |
164 | throw new Error(`Cannot find the worker file '${filePath}'`) | |
165 | } | |
c510fea7 APA |
166 | } |
167 | ||
8d3782fa JB |
168 | private checkNumberOfWorkers (numberOfWorkers: number): void { |
169 | if (numberOfWorkers == null) { | |
170 | throw new Error( | |
171 | 'Cannot instantiate a pool without specifying the number of workers' | |
172 | ) | |
78cea37e | 173 | } else if (!Number.isSafeInteger(numberOfWorkers)) { |
473c717a | 174 | throw new TypeError( |
0d80593b | 175 | 'Cannot instantiate a pool with a non safe integer number of workers' |
8d3782fa JB |
176 | ) |
177 | } else if (numberOfWorkers < 0) { | |
473c717a | 178 | throw new RangeError( |
8d3782fa JB |
179 | 'Cannot instantiate a pool with a negative number of workers' |
180 | ) | |
6b27d407 | 181 | } else if (this.type === PoolTypes.fixed && numberOfWorkers === 0) { |
2431bdb4 JB |
182 | throw new RangeError('Cannot instantiate a fixed pool with zero worker') |
183 | } | |
184 | } | |
185 | ||
186 | protected checkDynamicPoolSize (min: number, max: number): void { | |
079de991 | 187 | if (this.type === PoolTypes.dynamic) { |
a5ed75b7 | 188 | if (max == null) { |
e695d66f | 189 | throw new TypeError( |
a5ed75b7 JB |
190 | 'Cannot instantiate a dynamic pool without specifying the maximum pool size' |
191 | ) | |
192 | } else if (!Number.isSafeInteger(max)) { | |
2761efb4 JB |
193 | throw new TypeError( |
194 | 'Cannot instantiate a dynamic pool with a non safe integer maximum pool size' | |
195 | ) | |
196 | } else if (min > max) { | |
079de991 JB |
197 | throw new RangeError( |
198 | 'Cannot instantiate a dynamic pool with a maximum pool size inferior to the minimum pool size' | |
199 | ) | |
b97d82d8 | 200 | } else if (max === 0) { |
079de991 | 201 | throw new RangeError( |
d640b48b | 202 | 'Cannot instantiate a dynamic pool with a maximum pool size equal to zero' |
079de991 JB |
203 | ) |
204 | } else if (min === max) { | |
205 | throw new RangeError( | |
206 | 'Cannot instantiate a dynamic pool with a minimum pool size equal to the maximum pool size. Use a fixed pool instead' | |
207 | ) | |
208 | } | |
8d3782fa JB |
209 | } |
210 | } | |
211 | ||
7c0ba920 | 212 | private checkPoolOptions (opts: PoolOptions<Worker>): void { |
0d80593b JB |
213 | if (isPlainObject(opts)) { |
214 | this.opts.workerChoiceStrategy = | |
215 | opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN | |
216 | this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy) | |
8990357d JB |
217 | this.opts.workerChoiceStrategyOptions = { |
218 | ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, | |
219 | ...opts.workerChoiceStrategyOptions | |
220 | } | |
49be33fe JB |
221 | this.checkValidWorkerChoiceStrategyOptions( |
222 | this.opts.workerChoiceStrategyOptions | |
223 | ) | |
1f68cede | 224 | this.opts.restartWorkerOnError = opts.restartWorkerOnError ?? true |
0d80593b JB |
225 | this.opts.enableEvents = opts.enableEvents ?? true |
226 | this.opts.enableTasksQueue = opts.enableTasksQueue ?? false | |
227 | if (this.opts.enableTasksQueue) { | |
228 | this.checkValidTasksQueueOptions( | |
229 | opts.tasksQueueOptions as TasksQueueOptions | |
230 | ) | |
231 | this.opts.tasksQueueOptions = this.buildTasksQueueOptions( | |
232 | opts.tasksQueueOptions as TasksQueueOptions | |
233 | ) | |
234 | } | |
235 | } else { | |
236 | throw new TypeError('Invalid pool options: must be a plain object') | |
7171d33f | 237 | } |
aee46736 JB |
238 | } |
239 | ||
240 | private checkValidWorkerChoiceStrategy ( | |
241 | workerChoiceStrategy: WorkerChoiceStrategy | |
242 | ): void { | |
243 | if (!Object.values(WorkerChoiceStrategies).includes(workerChoiceStrategy)) { | |
b529c323 | 244 | throw new Error( |
aee46736 | 245 | `Invalid worker choice strategy '${workerChoiceStrategy}'` |
b529c323 JB |
246 | ) |
247 | } | |
7c0ba920 JB |
248 | } |
249 | ||
0d80593b JB |
250 | private checkValidWorkerChoiceStrategyOptions ( |
251 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | |
252 | ): void { | |
253 | if (!isPlainObject(workerChoiceStrategyOptions)) { | |
254 | throw new TypeError( | |
255 | 'Invalid worker choice strategy options: must be a plain object' | |
256 | ) | |
257 | } | |
8990357d JB |
258 | if ( |
259 | workerChoiceStrategyOptions.choiceRetries != null && | |
260 | !Number.isSafeInteger(workerChoiceStrategyOptions.choiceRetries) | |
261 | ) { | |
262 | throw new TypeError( | |
263 | 'Invalid worker choice strategy options: choice retries must be an integer' | |
264 | ) | |
265 | } | |
266 | if ( | |
267 | workerChoiceStrategyOptions.choiceRetries != null && | |
268 | workerChoiceStrategyOptions.choiceRetries <= 0 | |
269 | ) { | |
270 | throw new RangeError( | |
271 | `Invalid worker choice strategy options: choice retries '${workerChoiceStrategyOptions.choiceRetries}' must be greater than zero` | |
272 | ) | |
273 | } | |
49be33fe JB |
274 | if ( |
275 | workerChoiceStrategyOptions.weights != null && | |
6b27d407 | 276 | Object.keys(workerChoiceStrategyOptions.weights).length !== this.maxSize |
49be33fe JB |
277 | ) { |
278 | throw new Error( | |
279 | 'Invalid worker choice strategy options: must have a weight for each worker node' | |
280 | ) | |
281 | } | |
f0d7f803 JB |
282 | if ( |
283 | workerChoiceStrategyOptions.measurement != null && | |
284 | !Object.values(Measurements).includes( | |
285 | workerChoiceStrategyOptions.measurement | |
286 | ) | |
287 | ) { | |
288 | throw new Error( | |
289 | `Invalid worker choice strategy options: invalid measurement '${workerChoiceStrategyOptions.measurement}'` | |
290 | ) | |
291 | } | |
0d80593b JB |
292 | } |
293 | ||
a20f0ba5 | 294 | private checkValidTasksQueueOptions ( |
ff3f866a | 295 | tasksQueueOptions: Writable<TasksQueueOptions> |
a20f0ba5 | 296 | ): void { |
0d80593b JB |
297 | if (tasksQueueOptions != null && !isPlainObject(tasksQueueOptions)) { |
298 | throw new TypeError('Invalid tasks queue options: must be a plain object') | |
299 | } | |
f0d7f803 JB |
300 | if ( |
301 | tasksQueueOptions?.concurrency != null && | |
302 | !Number.isSafeInteger(tasksQueueOptions.concurrency) | |
303 | ) { | |
304 | throw new TypeError( | |
20c6f652 | 305 | 'Invalid worker node tasks concurrency: must be an integer' |
f0d7f803 JB |
306 | ) |
307 | } | |
308 | if ( | |
309 | tasksQueueOptions?.concurrency != null && | |
310 | tasksQueueOptions.concurrency <= 0 | |
311 | ) { | |
e695d66f | 312 | throw new RangeError( |
20c6f652 JB |
313 | `Invalid worker node tasks concurrency: ${tasksQueueOptions.concurrency} is a negative integer or zero` |
314 | ) | |
315 | } | |
316 | if ( | |
317 | tasksQueueOptions?.queueMaxSize != null && | |
ff3f866a | 318 | tasksQueueOptions?.size != null |
20c6f652 | 319 | ) { |
ff3f866a JB |
320 | throw new Error( |
321 | 'Invalid tasks queue options: cannot specify both queueMaxSize and size' | |
20c6f652 JB |
322 | ) |
323 | } | |
ff3f866a JB |
324 | if (tasksQueueOptions?.queueMaxSize != null) { |
325 | tasksQueueOptions.size = tasksQueueOptions.queueMaxSize | |
326 | } | |
20c6f652 | 327 | if ( |
ff3f866a JB |
328 | tasksQueueOptions?.size != null && |
329 | !Number.isSafeInteger(tasksQueueOptions.size) | |
20c6f652 | 330 | ) { |
ff3f866a JB |
331 | throw new TypeError( |
332 | 'Invalid worker node tasks queue max size: must be an integer' | |
333 | ) | |
334 | } | |
335 | if (tasksQueueOptions?.size != null && tasksQueueOptions.size <= 0) { | |
20c6f652 | 336 | throw new RangeError( |
ff3f866a | 337 | `Invalid worker node tasks queue max size: ${tasksQueueOptions.size} is a negative integer or zero` |
a20f0ba5 JB |
338 | ) |
339 | } | |
340 | } | |
341 | ||
e761c033 JB |
342 | private startPool (): void { |
343 | while ( | |
344 | this.workerNodes.reduce( | |
345 | (accumulator, workerNode) => | |
346 | !workerNode.info.dynamic ? accumulator + 1 : accumulator, | |
347 | 0 | |
348 | ) < this.numberOfWorkers | |
349 | ) { | |
aa9eede8 | 350 | this.createAndSetupWorkerNode() |
e761c033 JB |
351 | } |
352 | } | |
353 | ||
08f3f44c | 354 | /** @inheritDoc */ |
6b27d407 JB |
355 | public get info (): PoolInfo { |
356 | return { | |
23ccf9d7 | 357 | version, |
6b27d407 | 358 | type: this.type, |
184855e6 | 359 | worker: this.worker, |
2431bdb4 JB |
360 | ready: this.ready, |
361 | strategy: this.opts.workerChoiceStrategy as WorkerChoiceStrategy, | |
6b27d407 JB |
362 | minSize: this.minSize, |
363 | maxSize: this.maxSize, | |
c05f0d50 JB |
364 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
365 | .runTime.aggregate && | |
1305e9a8 JB |
366 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
367 | .waitTime.aggregate && { utilization: round(this.utilization) }), | |
6b27d407 JB |
368 | workerNodes: this.workerNodes.length, |
369 | idleWorkerNodes: this.workerNodes.reduce( | |
370 | (accumulator, workerNode) => | |
f59e1027 | 371 | workerNode.usage.tasks.executing === 0 |
a4e07f72 JB |
372 | ? accumulator + 1 |
373 | : accumulator, | |
6b27d407 JB |
374 | 0 |
375 | ), | |
376 | busyWorkerNodes: this.workerNodes.reduce( | |
377 | (accumulator, workerNode) => | |
f59e1027 | 378 | workerNode.usage.tasks.executing > 0 ? accumulator + 1 : accumulator, |
6b27d407 JB |
379 | 0 |
380 | ), | |
a4e07f72 | 381 | executedTasks: this.workerNodes.reduce( |
6b27d407 | 382 | (accumulator, workerNode) => |
f59e1027 | 383 | accumulator + workerNode.usage.tasks.executed, |
a4e07f72 JB |
384 | 0 |
385 | ), | |
386 | executingTasks: this.workerNodes.reduce( | |
387 | (accumulator, workerNode) => | |
f59e1027 | 388 | accumulator + workerNode.usage.tasks.executing, |
6b27d407 JB |
389 | 0 |
390 | ), | |
daf86646 JB |
391 | ...(this.opts.enableTasksQueue === true && { |
392 | queuedTasks: this.workerNodes.reduce( | |
393 | (accumulator, workerNode) => | |
394 | accumulator + workerNode.usage.tasks.queued, | |
395 | 0 | |
396 | ) | |
397 | }), | |
398 | ...(this.opts.enableTasksQueue === true && { | |
399 | maxQueuedTasks: this.workerNodes.reduce( | |
400 | (accumulator, workerNode) => | |
401 | accumulator + (workerNode.usage.tasks?.maxQueued ?? 0), | |
402 | 0 | |
403 | ) | |
404 | }), | |
a1763c54 JB |
405 | ...(this.opts.enableTasksQueue === true && { |
406 | backPressure: this.hasBackPressure() | |
407 | }), | |
a4e07f72 JB |
408 | failedTasks: this.workerNodes.reduce( |
409 | (accumulator, workerNode) => | |
f59e1027 | 410 | accumulator + workerNode.usage.tasks.failed, |
a4e07f72 | 411 | 0 |
1dcf8b7b JB |
412 | ), |
413 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
414 | .runTime.aggregate && { | |
415 | runTime: { | |
98e72cda JB |
416 | minimum: round( |
417 | Math.min( | |
418 | ...this.workerNodes.map( | |
8ebe6c30 | 419 | (workerNode) => workerNode.usage.runTime?.minimum ?? Infinity |
98e72cda | 420 | ) |
1dcf8b7b JB |
421 | ) |
422 | ), | |
98e72cda JB |
423 | maximum: round( |
424 | Math.max( | |
425 | ...this.workerNodes.map( | |
8ebe6c30 | 426 | (workerNode) => workerNode.usage.runTime?.maximum ?? -Infinity |
98e72cda | 427 | ) |
1dcf8b7b | 428 | ) |
98e72cda | 429 | ), |
3baa0837 JB |
430 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
431 | .runTime.average && { | |
432 | average: round( | |
433 | average( | |
434 | this.workerNodes.reduce<number[]>( | |
435 | (accumulator, workerNode) => | |
436 | accumulator.concat(workerNode.usage.runTime.history), | |
437 | [] | |
438 | ) | |
98e72cda | 439 | ) |
dc021bcc | 440 | ) |
3baa0837 | 441 | }), |
98e72cda JB |
442 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
443 | .runTime.median && { | |
444 | median: round( | |
445 | median( | |
3baa0837 JB |
446 | this.workerNodes.reduce<number[]>( |
447 | (accumulator, workerNode) => | |
448 | accumulator.concat(workerNode.usage.runTime.history), | |
449 | [] | |
98e72cda JB |
450 | ) |
451 | ) | |
452 | ) | |
453 | }) | |
1dcf8b7b JB |
454 | } |
455 | }), | |
456 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
457 | .waitTime.aggregate && { | |
458 | waitTime: { | |
98e72cda JB |
459 | minimum: round( |
460 | Math.min( | |
461 | ...this.workerNodes.map( | |
8ebe6c30 | 462 | (workerNode) => workerNode.usage.waitTime?.minimum ?? Infinity |
98e72cda | 463 | ) |
1dcf8b7b JB |
464 | ) |
465 | ), | |
98e72cda JB |
466 | maximum: round( |
467 | Math.max( | |
468 | ...this.workerNodes.map( | |
8ebe6c30 | 469 | (workerNode) => workerNode.usage.waitTime?.maximum ?? -Infinity |
98e72cda | 470 | ) |
1dcf8b7b | 471 | ) |
98e72cda | 472 | ), |
3baa0837 JB |
473 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
474 | .waitTime.average && { | |
475 | average: round( | |
476 | average( | |
477 | this.workerNodes.reduce<number[]>( | |
478 | (accumulator, workerNode) => | |
479 | accumulator.concat(workerNode.usage.waitTime.history), | |
480 | [] | |
481 | ) | |
98e72cda | 482 | ) |
dc021bcc | 483 | ) |
3baa0837 | 484 | }), |
98e72cda JB |
485 | ...(this.workerChoiceStrategyContext.getTaskStatisticsRequirements() |
486 | .waitTime.median && { | |
487 | median: round( | |
488 | median( | |
3baa0837 JB |
489 | this.workerNodes.reduce<number[]>( |
490 | (accumulator, workerNode) => | |
491 | accumulator.concat(workerNode.usage.waitTime.history), | |
492 | [] | |
98e72cda JB |
493 | ) |
494 | ) | |
495 | ) | |
496 | }) | |
1dcf8b7b JB |
497 | } |
498 | }) | |
6b27d407 JB |
499 | } |
500 | } | |
08f3f44c | 501 | |
aa9eede8 JB |
502 | /** |
503 | * The pool readiness boolean status. | |
504 | */ | |
2431bdb4 JB |
505 | private get ready (): boolean { |
506 | return ( | |
b97d82d8 JB |
507 | this.workerNodes.reduce( |
508 | (accumulator, workerNode) => | |
509 | !workerNode.info.dynamic && workerNode.info.ready | |
510 | ? accumulator + 1 | |
511 | : accumulator, | |
512 | 0 | |
513 | ) >= this.minSize | |
2431bdb4 JB |
514 | ) |
515 | } | |
516 | ||
afe0d5bf | 517 | /** |
aa9eede8 | 518 | * The approximate pool utilization. |
afe0d5bf JB |
519 | * |
520 | * @returns The pool utilization. | |
521 | */ | |
522 | private get utilization (): number { | |
8e5ca040 | 523 | const poolTimeCapacity = |
fe7d90db | 524 | (performance.now() - this.startTimestamp) * this.maxSize |
afe0d5bf JB |
525 | const totalTasksRunTime = this.workerNodes.reduce( |
526 | (accumulator, workerNode) => | |
71514351 | 527 | accumulator + (workerNode.usage.runTime?.aggregate ?? 0), |
afe0d5bf JB |
528 | 0 |
529 | ) | |
530 | const totalTasksWaitTime = this.workerNodes.reduce( | |
531 | (accumulator, workerNode) => | |
71514351 | 532 | accumulator + (workerNode.usage.waitTime?.aggregate ?? 0), |
afe0d5bf JB |
533 | 0 |
534 | ) | |
8e5ca040 | 535 | return (totalTasksRunTime + totalTasksWaitTime) / poolTimeCapacity |
afe0d5bf JB |
536 | } |
537 | ||
8881ae32 | 538 | /** |
aa9eede8 | 539 | * The pool type. |
8881ae32 JB |
540 | * |
541 | * If it is `'dynamic'`, it provides the `max` property. | |
542 | */ | |
543 | protected abstract get type (): PoolType | |
544 | ||
184855e6 | 545 | /** |
aa9eede8 | 546 | * The worker type. |
184855e6 JB |
547 | */ |
548 | protected abstract get worker (): WorkerType | |
549 | ||
c2ade475 | 550 | /** |
aa9eede8 | 551 | * The pool minimum size. |
c2ade475 | 552 | */ |
8735b4e5 JB |
553 | protected get minSize (): number { |
554 | return this.numberOfWorkers | |
555 | } | |
ff733df7 JB |
556 | |
557 | /** | |
aa9eede8 | 558 | * The pool maximum size. |
ff733df7 | 559 | */ |
8735b4e5 JB |
560 | protected get maxSize (): number { |
561 | return this.max ?? this.numberOfWorkers | |
562 | } | |
a35560ba | 563 | |
6b813701 JB |
564 | /** |
565 | * Checks if the worker id sent in the received message from a worker is valid. | |
566 | * | |
567 | * @param message - The received message. | |
568 | * @throws {@link https://nodejs.org/api/errors.html#class-error} If the worker id is invalid. | |
569 | */ | |
21f710aa | 570 | private checkMessageWorkerId (message: MessageValue<Response>): void { |
310de0aa JB |
571 | if (message.workerId == null) { |
572 | throw new Error('Worker message received without worker id') | |
573 | } else if ( | |
21f710aa | 574 | message.workerId != null && |
aad6fb64 | 575 | this.getWorkerNodeKeyByWorkerId(message.workerId) === -1 |
21f710aa JB |
576 | ) { |
577 | throw new Error( | |
578 | `Worker message received from unknown worker '${message.workerId}'` | |
579 | ) | |
580 | } | |
581 | } | |
582 | ||
ffcbbad8 | 583 | /** |
f06e48d8 | 584 | * Gets the given worker its worker node key. |
ffcbbad8 JB |
585 | * |
586 | * @param worker - The worker. | |
f59e1027 | 587 | * @returns The worker node key if found in the pool worker nodes, `-1` otherwise. |
ffcbbad8 | 588 | */ |
aad6fb64 | 589 | private getWorkerNodeKeyByWorker (worker: Worker): number { |
f06e48d8 | 590 | return this.workerNodes.findIndex( |
8ebe6c30 | 591 | (workerNode) => workerNode.worker === worker |
f06e48d8 | 592 | ) |
bf9549ae JB |
593 | } |
594 | ||
aa9eede8 JB |
595 | /** |
596 | * Gets the worker node key given its worker id. | |
597 | * | |
598 | * @param workerId - The worker id. | |
aad6fb64 | 599 | * @returns The worker node key if the worker id is found in the pool worker nodes, `-1` otherwise. |
aa9eede8 | 600 | */ |
aad6fb64 JB |
601 | private getWorkerNodeKeyByWorkerId (workerId: number): number { |
602 | return this.workerNodes.findIndex( | |
8ebe6c30 | 603 | (workerNode) => workerNode.info.id === workerId |
aad6fb64 | 604 | ) |
aa9eede8 JB |
605 | } |
606 | ||
afc003b2 | 607 | /** @inheritDoc */ |
a35560ba | 608 | public setWorkerChoiceStrategy ( |
59219cbb JB |
609 | workerChoiceStrategy: WorkerChoiceStrategy, |
610 | workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions | |
a35560ba | 611 | ): void { |
aee46736 | 612 | this.checkValidWorkerChoiceStrategy(workerChoiceStrategy) |
b98ec2e6 | 613 | this.opts.workerChoiceStrategy = workerChoiceStrategy |
b6b32453 JB |
614 | this.workerChoiceStrategyContext.setWorkerChoiceStrategy( |
615 | this.opts.workerChoiceStrategy | |
616 | ) | |
617 | if (workerChoiceStrategyOptions != null) { | |
618 | this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) | |
619 | } | |
aa9eede8 | 620 | for (const [workerNodeKey, workerNode] of this.workerNodes.entries()) { |
4b628b48 | 621 | workerNode.resetUsage() |
9edb9717 | 622 | this.sendStatisticsMessageToWorker(workerNodeKey) |
59219cbb | 623 | } |
a20f0ba5 JB |
624 | } |
625 | ||
626 | /** @inheritDoc */ | |
627 | public setWorkerChoiceStrategyOptions ( | |
628 | workerChoiceStrategyOptions: WorkerChoiceStrategyOptions | |
629 | ): void { | |
0d80593b | 630 | this.checkValidWorkerChoiceStrategyOptions(workerChoiceStrategyOptions) |
8990357d JB |
631 | this.opts.workerChoiceStrategyOptions = { |
632 | ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, | |
633 | ...workerChoiceStrategyOptions | |
634 | } | |
a20f0ba5 JB |
635 | this.workerChoiceStrategyContext.setOptions( |
636 | this.opts.workerChoiceStrategyOptions | |
a35560ba S |
637 | ) |
638 | } | |
639 | ||
a20f0ba5 | 640 | /** @inheritDoc */ |
8f52842f JB |
641 | public enableTasksQueue ( |
642 | enable: boolean, | |
643 | tasksQueueOptions?: TasksQueueOptions | |
644 | ): void { | |
a20f0ba5 | 645 | if (this.opts.enableTasksQueue === true && !enable) { |
ef41a6e6 | 646 | this.flushTasksQueues() |
a20f0ba5 JB |
647 | } |
648 | this.opts.enableTasksQueue = enable | |
8f52842f | 649 | this.setTasksQueueOptions(tasksQueueOptions as TasksQueueOptions) |
a20f0ba5 JB |
650 | } |
651 | ||
652 | /** @inheritDoc */ | |
8f52842f | 653 | public setTasksQueueOptions (tasksQueueOptions: TasksQueueOptions): void { |
a20f0ba5 | 654 | if (this.opts.enableTasksQueue === true) { |
8f52842f JB |
655 | this.checkValidTasksQueueOptions(tasksQueueOptions) |
656 | this.opts.tasksQueueOptions = | |
657 | this.buildTasksQueueOptions(tasksQueueOptions) | |
ff3f866a | 658 | this.setTasksQueueMaxSize(this.opts.tasksQueueOptions.size as number) |
5baee0d7 | 659 | } else if (this.opts.tasksQueueOptions != null) { |
a20f0ba5 JB |
660 | delete this.opts.tasksQueueOptions |
661 | } | |
662 | } | |
663 | ||
ff3f866a | 664 | private setTasksQueueMaxSize (size: number): void { |
20c6f652 | 665 | for (const workerNode of this.workerNodes) { |
ff3f866a | 666 | workerNode.tasksQueueBackPressureSize = size |
20c6f652 JB |
667 | } |
668 | } | |
669 | ||
a20f0ba5 JB |
670 | private buildTasksQueueOptions ( |
671 | tasksQueueOptions: TasksQueueOptions | |
672 | ): TasksQueueOptions { | |
673 | return { | |
20c6f652 | 674 | ...{ |
ff3f866a | 675 | size: Math.pow(this.maxSize, 2), |
20c6f652 JB |
676 | concurrency: 1 |
677 | }, | |
678 | ...tasksQueueOptions | |
a20f0ba5 JB |
679 | } |
680 | } | |
681 | ||
c319c66b JB |
682 | /** |
683 | * Whether the pool is full or not. | |
684 | * | |
685 | * The pool filling boolean status. | |
686 | */ | |
dea903a8 JB |
687 | protected get full (): boolean { |
688 | return this.workerNodes.length >= this.maxSize | |
689 | } | |
c2ade475 | 690 | |
c319c66b JB |
691 | /** |
692 | * Whether the pool is busy or not. | |
693 | * | |
694 | * The pool busyness boolean status. | |
695 | */ | |
696 | protected abstract get busy (): boolean | |
7c0ba920 | 697 | |
6c6afb84 | 698 | /** |
3d76750a | 699 | * Whether worker nodes are executing concurrently their tasks quota or not. |
6c6afb84 JB |
700 | * |
701 | * @returns Worker nodes busyness boolean status. | |
702 | */ | |
c2ade475 | 703 | protected internalBusy (): boolean { |
3d76750a JB |
704 | if (this.opts.enableTasksQueue === true) { |
705 | return ( | |
706 | this.workerNodes.findIndex( | |
8ebe6c30 | 707 | (workerNode) => |
3d76750a JB |
708 | workerNode.info.ready && |
709 | workerNode.usage.tasks.executing < | |
710 | (this.opts.tasksQueueOptions?.concurrency as number) | |
711 | ) === -1 | |
712 | ) | |
713 | } else { | |
714 | return ( | |
715 | this.workerNodes.findIndex( | |
8ebe6c30 | 716 | (workerNode) => |
3d76750a JB |
717 | workerNode.info.ready && workerNode.usage.tasks.executing === 0 |
718 | ) === -1 | |
719 | ) | |
720 | } | |
cb70b19d JB |
721 | } |
722 | ||
90d7d101 JB |
723 | /** @inheritDoc */ |
724 | public listTaskFunctions (): string[] { | |
f2dbbf95 JB |
725 | for (const workerNode of this.workerNodes) { |
726 | if ( | |
727 | Array.isArray(workerNode.info.taskFunctions) && | |
728 | workerNode.info.taskFunctions.length > 0 | |
729 | ) { | |
730 | return workerNode.info.taskFunctions | |
731 | } | |
90d7d101 | 732 | } |
f2dbbf95 | 733 | return [] |
90d7d101 JB |
734 | } |
735 | ||
afc003b2 | 736 | /** @inheritDoc */ |
7d91a8cd JB |
737 | public async execute ( |
738 | data?: Data, | |
739 | name?: string, | |
740 | transferList?: TransferListItem[] | |
741 | ): Promise<Response> { | |
52b71763 | 742 | return await new Promise<Response>((resolve, reject) => { |
15b176e0 JB |
743 | if (!this.started) { |
744 | reject(new Error('Cannot execute a task on destroyed pool')) | |
745 | } | |
7d91a8cd JB |
746 | if (name != null && typeof name !== 'string') { |
747 | reject(new TypeError('name argument must be a string')) | |
748 | } | |
90d7d101 JB |
749 | if ( |
750 | name != null && | |
751 | typeof name === 'string' && | |
752 | name.trim().length === 0 | |
753 | ) { | |
f58b60b9 | 754 | reject(new TypeError('name argument must not be an empty string')) |
90d7d101 | 755 | } |
b558f6b5 JB |
756 | if (transferList != null && !Array.isArray(transferList)) { |
757 | reject(new TypeError('transferList argument must be an array')) | |
758 | } | |
759 | const timestamp = performance.now() | |
760 | const workerNodeKey = this.chooseWorkerNode() | |
94407def | 761 | const workerInfo = this.getWorkerInfo(workerNodeKey) as WorkerInfo |
cea399c8 JB |
762 | if ( |
763 | name != null && | |
a5d15204 JB |
764 | Array.isArray(workerInfo.taskFunctions) && |
765 | !workerInfo.taskFunctions.includes(name) | |
cea399c8 | 766 | ) { |
90d7d101 JB |
767 | reject( |
768 | new Error(`Task function '${name}' is not registered in the pool`) | |
769 | ) | |
770 | } | |
501aea93 | 771 | const task: Task<Data> = { |
52b71763 JB |
772 | name: name ?? DEFAULT_TASK_NAME, |
773 | // eslint-disable-next-line @typescript-eslint/consistent-type-assertions | |
774 | data: data ?? ({} as Data), | |
7d91a8cd | 775 | transferList, |
52b71763 | 776 | timestamp, |
a5d15204 | 777 | workerId: workerInfo.id as number, |
7629bdf1 | 778 | taskId: randomUUID() |
52b71763 | 779 | } |
7629bdf1 | 780 | this.promiseResponseMap.set(task.taskId as string, { |
2e81254d JB |
781 | resolve, |
782 | reject, | |
501aea93 | 783 | workerNodeKey |
2e81254d | 784 | }) |
52b71763 | 785 | if ( |
4e377863 JB |
786 | this.opts.enableTasksQueue === false || |
787 | (this.opts.enableTasksQueue === true && | |
788 | this.workerNodes[workerNodeKey].usage.tasks.executing < | |
b5e113f6 | 789 | (this.opts.tasksQueueOptions?.concurrency as number)) |
52b71763 | 790 | ) { |
501aea93 | 791 | this.executeTask(workerNodeKey, task) |
4e377863 JB |
792 | } else { |
793 | this.enqueueTask(workerNodeKey, task) | |
52b71763 | 794 | } |
2e81254d | 795 | }) |
280c2a77 | 796 | } |
c97c7edb | 797 | |
afc003b2 | 798 | /** @inheritDoc */ |
c97c7edb | 799 | public async destroy (): Promise<void> { |
1fbcaa7c | 800 | await Promise.all( |
81c02522 | 801 | this.workerNodes.map(async (_, workerNodeKey) => { |
aa9eede8 | 802 | await this.destroyWorkerNode(workerNodeKey) |
1fbcaa7c JB |
803 | }) |
804 | ) | |
33e6bb4c | 805 | this.emitter?.emit(PoolEvents.destroy, this.info) |
15b176e0 | 806 | this.started = false |
c97c7edb S |
807 | } |
808 | ||
1e3214b6 JB |
809 | protected async sendKillMessageToWorker ( |
810 | workerNodeKey: number, | |
811 | workerId: number | |
812 | ): Promise<void> { | |
9edb9717 | 813 | await new Promise<void>((resolve, reject) => { |
1e3214b6 JB |
814 | this.registerWorkerMessageListener(workerNodeKey, (message) => { |
815 | if (message.kill === 'success') { | |
816 | resolve() | |
817 | } else if (message.kill === 'failure') { | |
e1af34e6 | 818 | reject(new Error(`Worker ${workerId} kill message handling failed`)) |
1e3214b6 JB |
819 | } |
820 | }) | |
9edb9717 | 821 | this.sendToWorker(workerNodeKey, { kill: true, workerId }) |
1e3214b6 | 822 | }) |
1e3214b6 JB |
823 | } |
824 | ||
4a6952ff | 825 | /** |
aa9eede8 | 826 | * Terminates the worker node given its worker node key. |
4a6952ff | 827 | * |
aa9eede8 | 828 | * @param workerNodeKey - The worker node key. |
4a6952ff | 829 | */ |
81c02522 | 830 | protected abstract destroyWorkerNode (workerNodeKey: number): Promise<void> |
c97c7edb | 831 | |
729c563d | 832 | /** |
6677a3d3 JB |
833 | * Setup hook to execute code before worker nodes are created in the abstract constructor. |
834 | * Can be overridden. | |
afc003b2 JB |
835 | * |
836 | * @virtual | |
729c563d | 837 | */ |
280c2a77 | 838 | protected setupHook (): void { |
d99ba5a8 | 839 | // Intentionally empty |
280c2a77 | 840 | } |
c97c7edb | 841 | |
729c563d | 842 | /** |
280c2a77 S |
843 | * Should return whether the worker is the main worker or not. |
844 | */ | |
845 | protected abstract isMain (): boolean | |
846 | ||
847 | /** | |
2e81254d | 848 | * Hook executed before the worker task execution. |
bf9549ae | 849 | * Can be overridden. |
729c563d | 850 | * |
f06e48d8 | 851 | * @param workerNodeKey - The worker node key. |
1c6fe997 | 852 | * @param task - The task to execute. |
729c563d | 853 | */ |
1c6fe997 JB |
854 | protected beforeTaskExecutionHook ( |
855 | workerNodeKey: number, | |
856 | task: Task<Data> | |
857 | ): void { | |
94407def JB |
858 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
859 | const workerUsage = this.workerNodes[workerNodeKey].usage | |
860 | ++workerUsage.tasks.executing | |
861 | this.updateWaitTimeWorkerUsage(workerUsage, task) | |
862 | } | |
863 | if ( | |
864 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
865 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage( | |
866 | task.name as string | |
867 | ) != null | |
868 | ) { | |
db0e38ee | 869 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 870 | workerNodeKey |
db0e38ee | 871 | ].getTaskFunctionWorkerUsage(task.name as string) as WorkerUsage |
5623b8d5 JB |
872 | ++taskFunctionWorkerUsage.tasks.executing |
873 | this.updateWaitTimeWorkerUsage(taskFunctionWorkerUsage, task) | |
b558f6b5 | 874 | } |
c97c7edb S |
875 | } |
876 | ||
c01733f1 | 877 | /** |
2e81254d | 878 | * Hook executed after the worker task execution. |
bf9549ae | 879 | * Can be overridden. |
c01733f1 | 880 | * |
501aea93 | 881 | * @param workerNodeKey - The worker node key. |
38e795c1 | 882 | * @param message - The received message. |
c01733f1 | 883 | */ |
2e81254d | 884 | protected afterTaskExecutionHook ( |
501aea93 | 885 | workerNodeKey: number, |
2740a743 | 886 | message: MessageValue<Response> |
bf9549ae | 887 | ): void { |
94407def JB |
888 | if (this.workerNodes[workerNodeKey]?.usage != null) { |
889 | const workerUsage = this.workerNodes[workerNodeKey].usage | |
890 | this.updateTaskStatisticsWorkerUsage(workerUsage, message) | |
891 | this.updateRunTimeWorkerUsage(workerUsage, message) | |
892 | this.updateEluWorkerUsage(workerUsage, message) | |
893 | } | |
894 | if ( | |
895 | this.shallUpdateTaskFunctionWorkerUsage(workerNodeKey) && | |
896 | this.workerNodes[workerNodeKey].getTaskFunctionWorkerUsage( | |
5623b8d5 | 897 | message.taskPerformance?.name as string |
94407def JB |
898 | ) != null |
899 | ) { | |
db0e38ee | 900 | const taskFunctionWorkerUsage = this.workerNodes[ |
b558f6b5 | 901 | workerNodeKey |
db0e38ee | 902 | ].getTaskFunctionWorkerUsage( |
0628755c | 903 | message.taskPerformance?.name as string |
b558f6b5 | 904 | ) as WorkerUsage |
db0e38ee JB |
905 | this.updateTaskStatisticsWorkerUsage(taskFunctionWorkerUsage, message) |
906 | this.updateRunTimeWorkerUsage(taskFunctionWorkerUsage, message) | |
907 | this.updateEluWorkerUsage(taskFunctionWorkerUsage, message) | |
b558f6b5 JB |
908 | } |
909 | } | |
910 | ||
db0e38ee JB |
911 | /** |
912 | * Whether the worker node shall update its task function worker usage or not. | |
913 | * | |
914 | * @param workerNodeKey - The worker node key. | |
915 | * @returns `true` if the worker node shall update its task function worker usage, `false` otherwise. | |
916 | */ | |
917 | private shallUpdateTaskFunctionWorkerUsage (workerNodeKey: number): boolean { | |
a5d15204 | 918 | const workerInfo = this.getWorkerInfo(workerNodeKey) |
b558f6b5 | 919 | return ( |
94407def | 920 | workerInfo != null && |
a5d15204 | 921 | Array.isArray(workerInfo.taskFunctions) && |
db0e38ee | 922 | workerInfo.taskFunctions.length > 2 |
b558f6b5 | 923 | ) |
f1c06930 JB |
924 | } |
925 | ||
926 | private updateTaskStatisticsWorkerUsage ( | |
927 | workerUsage: WorkerUsage, | |
928 | message: MessageValue<Response> | |
929 | ): void { | |
a4e07f72 | 930 | const workerTaskStatistics = workerUsage.tasks |
5bb5be17 JB |
931 | if ( |
932 | workerTaskStatistics.executing != null && | |
933 | workerTaskStatistics.executing > 0 | |
934 | ) { | |
935 | --workerTaskStatistics.executing | |
5bb5be17 | 936 | } |
98e72cda JB |
937 | if (message.taskError == null) { |
938 | ++workerTaskStatistics.executed | |
939 | } else { | |
a4e07f72 | 940 | ++workerTaskStatistics.failed |
2740a743 | 941 | } |
f8eb0a2a JB |
942 | } |
943 | ||
a4e07f72 JB |
944 | private updateRunTimeWorkerUsage ( |
945 | workerUsage: WorkerUsage, | |
f8eb0a2a JB |
946 | message: MessageValue<Response> |
947 | ): void { | |
dc021bcc JB |
948 | if (message.taskError != null) { |
949 | return | |
950 | } | |
e4f20deb JB |
951 | updateMeasurementStatistics( |
952 | workerUsage.runTime, | |
953 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime, | |
dc021bcc | 954 | message.taskPerformance?.runTime ?? 0 |
e4f20deb | 955 | ) |
f8eb0a2a JB |
956 | } |
957 | ||
a4e07f72 JB |
958 | private updateWaitTimeWorkerUsage ( |
959 | workerUsage: WorkerUsage, | |
1c6fe997 | 960 | task: Task<Data> |
f8eb0a2a | 961 | ): void { |
1c6fe997 JB |
962 | const timestamp = performance.now() |
963 | const taskWaitTime = timestamp - (task.timestamp ?? timestamp) | |
e4f20deb JB |
964 | updateMeasurementStatistics( |
965 | workerUsage.waitTime, | |
966 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime, | |
dc021bcc | 967 | taskWaitTime |
e4f20deb | 968 | ) |
c01733f1 | 969 | } |
970 | ||
a4e07f72 | 971 | private updateEluWorkerUsage ( |
5df69fab | 972 | workerUsage: WorkerUsage, |
62c15a68 JB |
973 | message: MessageValue<Response> |
974 | ): void { | |
dc021bcc JB |
975 | if (message.taskError != null) { |
976 | return | |
977 | } | |
008512c7 JB |
978 | const eluTaskStatisticsRequirements: MeasurementStatisticsRequirements = |
979 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu | |
e4f20deb JB |
980 | updateMeasurementStatistics( |
981 | workerUsage.elu.active, | |
008512c7 | 982 | eluTaskStatisticsRequirements, |
dc021bcc | 983 | message.taskPerformance?.elu?.active ?? 0 |
e4f20deb JB |
984 | ) |
985 | updateMeasurementStatistics( | |
986 | workerUsage.elu.idle, | |
008512c7 | 987 | eluTaskStatisticsRequirements, |
dc021bcc | 988 | message.taskPerformance?.elu?.idle ?? 0 |
e4f20deb | 989 | ) |
008512c7 | 990 | if (eluTaskStatisticsRequirements.aggregate) { |
f7510105 | 991 | if (message.taskPerformance?.elu != null) { |
f7510105 JB |
992 | if (workerUsage.elu.utilization != null) { |
993 | workerUsage.elu.utilization = | |
994 | (workerUsage.elu.utilization + | |
995 | message.taskPerformance.elu.utilization) / | |
996 | 2 | |
997 | } else { | |
998 | workerUsage.elu.utilization = message.taskPerformance.elu.utilization | |
999 | } | |
62c15a68 JB |
1000 | } |
1001 | } | |
1002 | } | |
1003 | ||
280c2a77 | 1004 | /** |
f06e48d8 | 1005 | * Chooses a worker node for the next task. |
280c2a77 | 1006 | * |
6c6afb84 | 1007 | * The default worker choice strategy uses a round robin algorithm to distribute the tasks. |
280c2a77 | 1008 | * |
aa9eede8 | 1009 | * @returns The chosen worker node key |
280c2a77 | 1010 | */ |
6c6afb84 | 1011 | private chooseWorkerNode (): number { |
930dcf12 | 1012 | if (this.shallCreateDynamicWorker()) { |
aa9eede8 | 1013 | const workerNodeKey = this.createAndSetupDynamicWorkerNode() |
6c6afb84 | 1014 | if ( |
b1aae695 | 1015 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage |
6c6afb84 | 1016 | ) { |
aa9eede8 | 1017 | return workerNodeKey |
6c6afb84 | 1018 | } |
17393ac8 | 1019 | } |
930dcf12 JB |
1020 | return this.workerChoiceStrategyContext.execute() |
1021 | } | |
1022 | ||
6c6afb84 JB |
1023 | /** |
1024 | * Conditions for dynamic worker creation. | |
1025 | * | |
1026 | * @returns Whether to create a dynamic worker or not. | |
1027 | */ | |
1028 | private shallCreateDynamicWorker (): boolean { | |
930dcf12 | 1029 | return this.type === PoolTypes.dynamic && !this.full && this.internalBusy() |
c97c7edb S |
1030 | } |
1031 | ||
280c2a77 | 1032 | /** |
aa9eede8 | 1033 | * Sends a message to worker given its worker node key. |
280c2a77 | 1034 | * |
aa9eede8 | 1035 | * @param workerNodeKey - The worker node key. |
38e795c1 | 1036 | * @param message - The message. |
7d91a8cd | 1037 | * @param transferList - The optional array of transferable objects. |
280c2a77 S |
1038 | */ |
1039 | protected abstract sendToWorker ( | |
aa9eede8 | 1040 | workerNodeKey: number, |
7d91a8cd JB |
1041 | message: MessageValue<Data>, |
1042 | transferList?: TransferListItem[] | |
280c2a77 S |
1043 | ): void |
1044 | ||
729c563d | 1045 | /** |
41344292 | 1046 | * Creates a new worker. |
6c6afb84 JB |
1047 | * |
1048 | * @returns Newly created worker. | |
729c563d | 1049 | */ |
280c2a77 | 1050 | protected abstract createWorker (): Worker |
c97c7edb | 1051 | |
4a6952ff | 1052 | /** |
aa9eede8 | 1053 | * Creates a new, completely set up worker node. |
4a6952ff | 1054 | * |
aa9eede8 | 1055 | * @returns New, completely set up worker node key. |
4a6952ff | 1056 | */ |
aa9eede8 | 1057 | protected createAndSetupWorkerNode (): number { |
bdacc2d2 | 1058 | const worker = this.createWorker() |
280c2a77 | 1059 | |
fd04474e | 1060 | worker.on('online', this.opts.onlineHandler ?? EMPTY_FUNCTION) |
35cf1c03 | 1061 | worker.on('message', this.opts.messageHandler ?? EMPTY_FUNCTION) |
a35560ba | 1062 | worker.on('error', this.opts.errorHandler ?? EMPTY_FUNCTION) |
8ebe6c30 | 1063 | worker.on('error', (error) => { |
aad6fb64 | 1064 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
94407def | 1065 | const workerInfo = this.getWorkerInfo(workerNodeKey) as WorkerInfo |
9b106837 | 1066 | workerInfo.ready = false |
0dc838e3 | 1067 | this.workerNodes[workerNodeKey].closeChannel() |
2a69b8c5 | 1068 | this.emitter?.emit(PoolEvents.error, error) |
15b176e0 JB |
1069 | if ( |
1070 | this.opts.restartWorkerOnError === true && | |
1071 | !this.starting && | |
1072 | this.started | |
1073 | ) { | |
9b106837 | 1074 | if (workerInfo.dynamic) { |
aa9eede8 | 1075 | this.createAndSetupDynamicWorkerNode() |
8a1260a3 | 1076 | } else { |
aa9eede8 | 1077 | this.createAndSetupWorkerNode() |
8a1260a3 | 1078 | } |
5baee0d7 | 1079 | } |
19dbc45b | 1080 | if (this.opts.enableTasksQueue === true) { |
9b106837 | 1081 | this.redistributeQueuedTasks(workerNodeKey) |
19dbc45b | 1082 | } |
5baee0d7 | 1083 | }) |
a35560ba | 1084 | worker.on('exit', this.opts.exitHandler ?? EMPTY_FUNCTION) |
a974afa6 | 1085 | worker.once('exit', () => { |
f06e48d8 | 1086 | this.removeWorkerNode(worker) |
a974afa6 | 1087 | }) |
280c2a77 | 1088 | |
aa9eede8 | 1089 | const workerNodeKey = this.addWorkerNode(worker) |
280c2a77 | 1090 | |
aa9eede8 | 1091 | this.afterWorkerNodeSetup(workerNodeKey) |
280c2a77 | 1092 | |
aa9eede8 | 1093 | return workerNodeKey |
c97c7edb | 1094 | } |
be0676b3 | 1095 | |
930dcf12 | 1096 | /** |
aa9eede8 | 1097 | * Creates a new, completely set up dynamic worker node. |
930dcf12 | 1098 | * |
aa9eede8 | 1099 | * @returns New, completely set up dynamic worker node key. |
930dcf12 | 1100 | */ |
aa9eede8 JB |
1101 | protected createAndSetupDynamicWorkerNode (): number { |
1102 | const workerNodeKey = this.createAndSetupWorkerNode() | |
8ebe6c30 | 1103 | this.registerWorkerMessageListener(workerNodeKey, (message) => { |
aa9eede8 JB |
1104 | const localWorkerNodeKey = this.getWorkerNodeKeyByWorkerId( |
1105 | message.workerId | |
aad6fb64 | 1106 | ) |
aa9eede8 | 1107 | const workerUsage = this.workerNodes[localWorkerNodeKey].usage |
81c02522 | 1108 | // Kill message received from worker |
930dcf12 JB |
1109 | if ( |
1110 | isKillBehavior(KillBehaviors.HARD, message.kill) || | |
1e3214b6 | 1111 | (isKillBehavior(KillBehaviors.SOFT, message.kill) && |
7b56f532 | 1112 | ((this.opts.enableTasksQueue === false && |
aa9eede8 | 1113 | workerUsage.tasks.executing === 0) || |
7b56f532 | 1114 | (this.opts.enableTasksQueue === true && |
aa9eede8 JB |
1115 | workerUsage.tasks.executing === 0 && |
1116 | this.tasksQueueSize(localWorkerNodeKey) === 0))) | |
930dcf12 | 1117 | ) { |
5270d253 JB |
1118 | this.destroyWorkerNode(localWorkerNodeKey).catch((error) => { |
1119 | this.emitter?.emit(PoolEvents.error, error) | |
1120 | }) | |
930dcf12 JB |
1121 | } |
1122 | }) | |
94407def | 1123 | const workerInfo = this.getWorkerInfo(workerNodeKey) as WorkerInfo |
aa9eede8 | 1124 | this.sendToWorker(workerNodeKey, { |
b0a4db63 | 1125 | checkActive: true, |
21f710aa JB |
1126 | workerId: workerInfo.id as number |
1127 | }) | |
b5e113f6 | 1128 | workerInfo.dynamic = true |
b1aae695 JB |
1129 | if ( |
1130 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerReady || | |
1131 | this.workerChoiceStrategyContext.getStrategyPolicy().dynamicWorkerUsage | |
1132 | ) { | |
b5e113f6 JB |
1133 | workerInfo.ready = true |
1134 | } | |
33e6bb4c | 1135 | this.checkAndEmitDynamicWorkerCreationEvents() |
aa9eede8 | 1136 | return workerNodeKey |
930dcf12 JB |
1137 | } |
1138 | ||
a2ed5053 | 1139 | /** |
aa9eede8 | 1140 | * Registers a listener callback on the worker given its worker node key. |
a2ed5053 | 1141 | * |
aa9eede8 | 1142 | * @param workerNodeKey - The worker node key. |
a2ed5053 JB |
1143 | * @param listener - The message listener callback. |
1144 | */ | |
85aeb3f3 JB |
1145 | protected abstract registerWorkerMessageListener< |
1146 | Message extends Data | Response | |
aa9eede8 JB |
1147 | >( |
1148 | workerNodeKey: number, | |
1149 | listener: (message: MessageValue<Message>) => void | |
1150 | ): void | |
a2ed5053 JB |
1151 | |
1152 | /** | |
aa9eede8 | 1153 | * Method hooked up after a worker node has been newly created. |
a2ed5053 JB |
1154 | * Can be overridden. |
1155 | * | |
aa9eede8 | 1156 | * @param workerNodeKey - The newly created worker node key. |
a2ed5053 | 1157 | */ |
aa9eede8 | 1158 | protected afterWorkerNodeSetup (workerNodeKey: number): void { |
a2ed5053 | 1159 | // Listen to worker messages. |
aa9eede8 | 1160 | this.registerWorkerMessageListener(workerNodeKey, this.workerListener()) |
85aeb3f3 | 1161 | // Send the startup message to worker. |
aa9eede8 | 1162 | this.sendStartupMessageToWorker(workerNodeKey) |
9edb9717 JB |
1163 | // Send the statistics message to worker. |
1164 | this.sendStatisticsMessageToWorker(workerNodeKey) | |
72695f86 | 1165 | if (this.opts.enableTasksQueue === true) { |
a6b3272b JB |
1166 | this.workerNodes[workerNodeKey].onEmptyQueue = |
1167 | this.taskStealingOnEmptyQueue.bind(this) | |
72695f86 JB |
1168 | this.workerNodes[workerNodeKey].onBackPressure = |
1169 | this.tasksStealingOnBackPressure.bind(this) | |
1170 | } | |
d2c73f82 JB |
1171 | } |
1172 | ||
85aeb3f3 | 1173 | /** |
aa9eede8 JB |
1174 | * Sends the startup message to worker given its worker node key. |
1175 | * | |
1176 | * @param workerNodeKey - The worker node key. | |
1177 | */ | |
1178 | protected abstract sendStartupMessageToWorker (workerNodeKey: number): void | |
1179 | ||
1180 | /** | |
9edb9717 | 1181 | * Sends the statistics message to worker given its worker node key. |
85aeb3f3 | 1182 | * |
aa9eede8 | 1183 | * @param workerNodeKey - The worker node key. |
85aeb3f3 | 1184 | */ |
9edb9717 | 1185 | private sendStatisticsMessageToWorker (workerNodeKey: number): void { |
aa9eede8 JB |
1186 | this.sendToWorker(workerNodeKey, { |
1187 | statistics: { | |
1188 | runTime: | |
1189 | this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
1190 | .runTime.aggregate, | |
1191 | elu: this.workerChoiceStrategyContext.getTaskStatisticsRequirements() | |
1192 | .elu.aggregate | |
1193 | }, | |
94407def | 1194 | workerId: (this.getWorkerInfo(workerNodeKey) as WorkerInfo).id as number |
aa9eede8 JB |
1195 | }) |
1196 | } | |
a2ed5053 JB |
1197 | |
1198 | private redistributeQueuedTasks (workerNodeKey: number): void { | |
1199 | while (this.tasksQueueSize(workerNodeKey) > 0) { | |
0bc68267 | 1200 | let destinationWorkerNodeKey!: number |
a2ed5053 | 1201 | let minQueuedTasks = Infinity |
10ecf8fd | 1202 | let executeTask = false |
a6b3272b | 1203 | for (const [workerNodeId, workerNode] of this.workerNodes.entries()) { |
58baffd3 JB |
1204 | if (workerNode.info.ready && workerNodeId !== workerNodeKey) { |
1205 | if ( | |
1206 | workerNode.usage.tasks.executing < | |
a6b3272b | 1207 | (this.opts.tasksQueueOptions?.concurrency as number) |
58baffd3 JB |
1208 | ) { |
1209 | executeTask = true | |
1210 | } | |
1211 | if (workerNode.usage.tasks.queued === 0) { | |
1212 | destinationWorkerNodeKey = workerNodeId | |
1213 | break | |
1214 | } | |
1215 | if (workerNode.usage.tasks.queued < minQueuedTasks) { | |
1216 | minQueuedTasks = workerNode.usage.tasks.queued | |
1217 | destinationWorkerNodeKey = workerNodeId | |
1218 | } | |
a2ed5053 JB |
1219 | } |
1220 | } | |
0bc68267 JB |
1221 | if (destinationWorkerNodeKey != null) { |
1222 | const task = { | |
1223 | ...(this.dequeueTask(workerNodeKey) as Task<Data>), | |
1224 | workerId: (this.getWorkerInfo(destinationWorkerNodeKey) as WorkerInfo) | |
1225 | .id as number | |
1226 | } | |
1227 | if (executeTask) { | |
1228 | this.executeTask(destinationWorkerNodeKey, task) | |
1229 | } else { | |
1230 | this.enqueueTask(destinationWorkerNodeKey, task) | |
1231 | } | |
dd951876 JB |
1232 | } |
1233 | } | |
1234 | } | |
1235 | ||
1236 | private taskStealingOnEmptyQueue (workerId: number): void { | |
a6b3272b JB |
1237 | const destinationWorkerNodeKey = this.getWorkerNodeKeyByWorkerId(workerId) |
1238 | const destinationWorkerNode = this.workerNodes[destinationWorkerNodeKey] | |
dd951876 | 1239 | const workerNodes = this.workerNodes |
a6b3272b | 1240 | .slice() |
dd951876 JB |
1241 | .sort( |
1242 | (workerNodeA, workerNodeB) => | |
1243 | workerNodeB.usage.tasks.queued - workerNodeA.usage.tasks.queued | |
1244 | ) | |
dd951876 | 1245 | for (const sourceWorkerNode of workerNodes) { |
0bc68267 JB |
1246 | if (sourceWorkerNode.usage.tasks.queued === 0) { |
1247 | break | |
1248 | } | |
a6b3272b JB |
1249 | if ( |
1250 | sourceWorkerNode.info.ready && | |
1251 | sourceWorkerNode.info.id !== workerId && | |
1252 | sourceWorkerNode.usage.tasks.queued > 0 | |
1253 | ) { | |
1254 | const task = { | |
1255 | ...(sourceWorkerNode.popTask() as Task<Data>), | |
1256 | workerId: destinationWorkerNode.info.id as number | |
1257 | } | |
dd951876 | 1258 | if ( |
a6b3272b | 1259 | destinationWorkerNode.usage.tasks.executing < |
dd951876 JB |
1260 | (this.opts.tasksQueueOptions?.concurrency as number) |
1261 | ) { | |
dd951876 JB |
1262 | this.executeTask(destinationWorkerNodeKey, task) |
1263 | } else { | |
dd951876 JB |
1264 | this.enqueueTask(destinationWorkerNodeKey, task) |
1265 | } | |
1266 | break | |
72695f86 JB |
1267 | } |
1268 | } | |
1269 | } | |
1270 | ||
1271 | private tasksStealingOnBackPressure (workerId: number): void { | |
1272 | const sourceWorkerNode = | |
1273 | this.workerNodes[this.getWorkerNodeKeyByWorkerId(workerId)] | |
1274 | const workerNodes = this.workerNodes | |
a6b3272b | 1275 | .slice() |
72695f86 JB |
1276 | .sort( |
1277 | (workerNodeA, workerNodeB) => | |
1278 | workerNodeA.usage.tasks.queued - workerNodeB.usage.tasks.queued | |
1279 | ) | |
1280 | for (const [workerNodeKey, workerNode] of workerNodes.entries()) { | |
1281 | if ( | |
0bc68267 | 1282 | sourceWorkerNode.usage.tasks.queued > 0 && |
a6b3272b JB |
1283 | workerNode.info.ready && |
1284 | workerNode.info.id !== workerId && | |
0bc68267 JB |
1285 | workerNode.usage.tasks.queued < |
1286 | (this.opts.tasksQueueOptions?.size as number) - 1 | |
72695f86 | 1287 | ) { |
dd951876 JB |
1288 | const task = { |
1289 | ...(sourceWorkerNode.popTask() as Task<Data>), | |
1290 | workerId: workerNode.info.id as number | |
1291 | } | |
4de3d785 JB |
1292 | if ( |
1293 | workerNode.usage.tasks.executing < | |
72695f86 | 1294 | (this.opts.tasksQueueOptions?.concurrency as number) |
4de3d785 | 1295 | ) { |
dd951876 | 1296 | this.executeTask(workerNodeKey, task) |
4de3d785 | 1297 | } else { |
dd951876 | 1298 | this.enqueueTask(workerNodeKey, task) |
4de3d785 | 1299 | } |
10ecf8fd | 1300 | } |
a2ed5053 JB |
1301 | } |
1302 | } | |
1303 | ||
be0676b3 | 1304 | /** |
aa9eede8 | 1305 | * This method is the listener registered for each worker message. |
be0676b3 | 1306 | * |
bdacc2d2 | 1307 | * @returns The listener function to execute when a message is received from a worker. |
be0676b3 APA |
1308 | */ |
1309 | protected workerListener (): (message: MessageValue<Response>) => void { | |
8ebe6c30 | 1310 | return (message) => { |
21f710aa | 1311 | this.checkMessageWorkerId(message) |
a5d15204 | 1312 | if (message.ready != null && message.taskFunctions != null) { |
81c02522 | 1313 | // Worker ready response received from worker |
10e2aa7e | 1314 | this.handleWorkerReadyResponse(message) |
7629bdf1 | 1315 | } else if (message.taskId != null) { |
81c02522 | 1316 | // Task execution response received from worker |
6b272951 | 1317 | this.handleTaskExecutionResponse(message) |
90d7d101 JB |
1318 | } else if (message.taskFunctions != null) { |
1319 | // Task functions message received from worker | |
94407def JB |
1320 | ( |
1321 | this.getWorkerInfo( | |
1322 | this.getWorkerNodeKeyByWorkerId(message.workerId) | |
1323 | ) as WorkerInfo | |
b558f6b5 | 1324 | ).taskFunctions = message.taskFunctions |
6b272951 JB |
1325 | } |
1326 | } | |
1327 | } | |
1328 | ||
10e2aa7e | 1329 | private handleWorkerReadyResponse (message: MessageValue<Response>): void { |
f05ed93c JB |
1330 | if (message.ready === false) { |
1331 | throw new Error(`Worker ${message.workerId} failed to initialize`) | |
1332 | } | |
a5d15204 | 1333 | const workerInfo = this.getWorkerInfo( |
aad6fb64 | 1334 | this.getWorkerNodeKeyByWorkerId(message.workerId) |
94407def | 1335 | ) as WorkerInfo |
a5d15204 JB |
1336 | workerInfo.ready = message.ready as boolean |
1337 | workerInfo.taskFunctions = message.taskFunctions | |
2431bdb4 JB |
1338 | if (this.emitter != null && this.ready) { |
1339 | this.emitter.emit(PoolEvents.ready, this.info) | |
1340 | } | |
6b272951 JB |
1341 | } |
1342 | ||
1343 | private handleTaskExecutionResponse (message: MessageValue<Response>): void { | |
5441aea6 JB |
1344 | const { taskId, taskError, data } = message |
1345 | const promiseResponse = this.promiseResponseMap.get(taskId as string) | |
6b272951 | 1346 | if (promiseResponse != null) { |
5441aea6 JB |
1347 | if (taskError != null) { |
1348 | this.emitter?.emit(PoolEvents.taskError, taskError) | |
1349 | promiseResponse.reject(taskError.message) | |
6b272951 | 1350 | } else { |
5441aea6 | 1351 | promiseResponse.resolve(data as Response) |
6b272951 | 1352 | } |
501aea93 JB |
1353 | const workerNodeKey = promiseResponse.workerNodeKey |
1354 | this.afterTaskExecutionHook(workerNodeKey, message) | |
5441aea6 | 1355 | this.promiseResponseMap.delete(taskId as string) |
6b272951 JB |
1356 | if ( |
1357 | this.opts.enableTasksQueue === true && | |
b5e113f6 JB |
1358 | this.tasksQueueSize(workerNodeKey) > 0 && |
1359 | this.workerNodes[workerNodeKey].usage.tasks.executing < | |
1360 | (this.opts.tasksQueueOptions?.concurrency as number) | |
6b272951 JB |
1361 | ) { |
1362 | this.executeTask( | |
1363 | workerNodeKey, | |
1364 | this.dequeueTask(workerNodeKey) as Task<Data> | |
1365 | ) | |
be0676b3 | 1366 | } |
6b272951 | 1367 | this.workerChoiceStrategyContext.update(workerNodeKey) |
be0676b3 | 1368 | } |
be0676b3 | 1369 | } |
7c0ba920 | 1370 | |
a1763c54 | 1371 | private checkAndEmitTaskExecutionEvents (): void { |
33e6bb4c JB |
1372 | if (this.busy) { |
1373 | this.emitter?.emit(PoolEvents.busy, this.info) | |
a1763c54 JB |
1374 | } |
1375 | } | |
1376 | ||
1377 | private checkAndEmitTaskQueuingEvents (): void { | |
1378 | if (this.hasBackPressure()) { | |
1379 | this.emitter?.emit(PoolEvents.backPressure, this.info) | |
164d950a JB |
1380 | } |
1381 | } | |
1382 | ||
33e6bb4c JB |
1383 | private checkAndEmitDynamicWorkerCreationEvents (): void { |
1384 | if (this.type === PoolTypes.dynamic) { | |
1385 | if (this.full) { | |
1386 | this.emitter?.emit(PoolEvents.full, this.info) | |
1387 | } | |
1388 | } | |
1389 | } | |
1390 | ||
8a1260a3 | 1391 | /** |
aa9eede8 | 1392 | * Gets the worker information given its worker node key. |
8a1260a3 JB |
1393 | * |
1394 | * @param workerNodeKey - The worker node key. | |
3f09ed9f | 1395 | * @returns The worker information. |
8a1260a3 | 1396 | */ |
94407def JB |
1397 | protected getWorkerInfo (workerNodeKey: number): WorkerInfo | undefined { |
1398 | return this.workerNodes[workerNodeKey]?.info | |
e221309a JB |
1399 | } |
1400 | ||
a05c10de | 1401 | /** |
b0a4db63 | 1402 | * Adds the given worker in the pool worker nodes. |
ea7a90d3 | 1403 | * |
38e795c1 | 1404 | * @param worker - The worker. |
aa9eede8 JB |
1405 | * @returns The added worker node key. |
1406 | * @throws {@link https://nodejs.org/api/errors.html#class-error} If the added worker node is not found. | |
ea7a90d3 | 1407 | */ |
b0a4db63 | 1408 | private addWorkerNode (worker: Worker): number { |
671d5154 JB |
1409 | const workerNode = new WorkerNode<Worker, Data>( |
1410 | worker, | |
1411 | this.worker, | |
ff3f866a | 1412 | this.opts.tasksQueueOptions?.size ?? Math.pow(this.maxSize, 2) |
671d5154 | 1413 | ) |
b97d82d8 | 1414 | // Flag the worker node as ready at pool startup. |
d2c73f82 JB |
1415 | if (this.starting) { |
1416 | workerNode.info.ready = true | |
1417 | } | |
aa9eede8 | 1418 | this.workerNodes.push(workerNode) |
aad6fb64 | 1419 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
aa9eede8 | 1420 | if (workerNodeKey === -1) { |
a5d15204 | 1421 | throw new Error('Worker node added not found') |
aa9eede8 JB |
1422 | } |
1423 | return workerNodeKey | |
ea7a90d3 | 1424 | } |
c923ce56 | 1425 | |
51fe3d3c | 1426 | /** |
f06e48d8 | 1427 | * Removes the given worker from the pool worker nodes. |
51fe3d3c | 1428 | * |
f06e48d8 | 1429 | * @param worker - The worker. |
51fe3d3c | 1430 | */ |
416fd65c | 1431 | private removeWorkerNode (worker: Worker): void { |
aad6fb64 | 1432 | const workerNodeKey = this.getWorkerNodeKeyByWorker(worker) |
1f68cede JB |
1433 | if (workerNodeKey !== -1) { |
1434 | this.workerNodes.splice(workerNodeKey, 1) | |
1435 | this.workerChoiceStrategyContext.remove(workerNodeKey) | |
1436 | } | |
51fe3d3c | 1437 | } |
adc3c320 | 1438 | |
e2b31e32 JB |
1439 | /** @inheritDoc */ |
1440 | public hasWorkerNodeBackPressure (workerNodeKey: number): boolean { | |
9e844245 | 1441 | return ( |
e2b31e32 JB |
1442 | this.opts.enableTasksQueue === true && |
1443 | this.workerNodes[workerNodeKey].hasBackPressure() | |
9e844245 JB |
1444 | ) |
1445 | } | |
1446 | ||
1447 | private hasBackPressure (): boolean { | |
1448 | return ( | |
1449 | this.opts.enableTasksQueue === true && | |
1450 | this.workerNodes.findIndex( | |
1451 | (workerNode) => !workerNode.hasBackPressure() | |
a1763c54 | 1452 | ) === -1 |
9e844245 | 1453 | ) |
e2b31e32 JB |
1454 | } |
1455 | ||
b0a4db63 | 1456 | /** |
aa9eede8 | 1457 | * Executes the given task on the worker given its worker node key. |
b0a4db63 | 1458 | * |
aa9eede8 | 1459 | * @param workerNodeKey - The worker node key. |
b0a4db63 JB |
1460 | * @param task - The task to execute. |
1461 | */ | |
2e81254d | 1462 | private executeTask (workerNodeKey: number, task: Task<Data>): void { |
1c6fe997 | 1463 | this.beforeTaskExecutionHook(workerNodeKey, task) |
bbfa38a2 | 1464 | this.sendToWorker(workerNodeKey, task, task.transferList) |
a1763c54 | 1465 | this.checkAndEmitTaskExecutionEvents() |
2e81254d JB |
1466 | } |
1467 | ||
f9f00b5f | 1468 | private enqueueTask (workerNodeKey: number, task: Task<Data>): number { |
a1763c54 JB |
1469 | const tasksQueueSize = this.workerNodes[workerNodeKey].enqueueTask(task) |
1470 | this.checkAndEmitTaskQueuingEvents() | |
1471 | return tasksQueueSize | |
adc3c320 JB |
1472 | } |
1473 | ||
416fd65c | 1474 | private dequeueTask (workerNodeKey: number): Task<Data> | undefined { |
4b628b48 | 1475 | return this.workerNodes[workerNodeKey].dequeueTask() |
adc3c320 JB |
1476 | } |
1477 | ||
416fd65c | 1478 | private tasksQueueSize (workerNodeKey: number): number { |
4b628b48 | 1479 | return this.workerNodes[workerNodeKey].tasksQueueSize() |
df593701 JB |
1480 | } |
1481 | ||
81c02522 | 1482 | protected flushTasksQueue (workerNodeKey: number): void { |
920278a2 JB |
1483 | while (this.tasksQueueSize(workerNodeKey) > 0) { |
1484 | this.executeTask( | |
1485 | workerNodeKey, | |
1486 | this.dequeueTask(workerNodeKey) as Task<Data> | |
1487 | ) | |
ff733df7 | 1488 | } |
4b628b48 | 1489 | this.workerNodes[workerNodeKey].clearTasksQueue() |
ff733df7 JB |
1490 | } |
1491 | ||
ef41a6e6 JB |
1492 | private flushTasksQueues (): void { |
1493 | for (const [workerNodeKey] of this.workerNodes.entries()) { | |
1494 | this.flushTasksQueue(workerNodeKey) | |
1495 | } | |
1496 | } | |
c97c7edb | 1497 | } |