import crypto from 'node:crypto'
+import { performance } from 'node:perf_hooks'
import type { MessageValue, PromiseResponseWrapper } from '../utility-types'
import {
DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS,
* @param opts - Options for the pool.
*/
public constructor (
- public readonly numberOfWorkers: number,
- public readonly filePath: string,
- public readonly opts: PoolOptions<Worker>
+ protected readonly numberOfWorkers: number,
+ protected readonly filePath: string,
+ protected readonly opts: PoolOptions<Worker>
) {
if (!this.isMain()) {
throw new Error('Cannot start a pool from a worker!')
this.enqueueTask = this.enqueueTask.bind(this)
this.checkAndEmitEvents = this.checkAndEmitEvents.bind(this)
- this.setupHook()
-
- for (let i = 1; i <= this.numberOfWorkers; i++) {
- this.createAndSetupWorker()
- }
-
if (this.opts.enableEvents === true) {
this.emitter = new PoolEmitter()
}
this.opts.workerChoiceStrategy,
this.opts.workerChoiceStrategyOptions
)
+
+ this.setupHook()
+
+ for (let i = 1; i <= this.numberOfWorkers; i++) {
+ this.createAndSetupWorker()
+ }
}
private checkFilePath (filePath: string): void {
}
}
- /** @inheritDoc */
- public abstract get type (): PoolType
-
/** @inheritDoc */
public get info (): PoolInfo {
return {
}
}
+ /**
+ * Pool type.
+ *
+ * If it is `'dynamic'`, it provides the `max` property.
+ */
+ protected abstract get type (): PoolType
+
/**
* Gets the worker type.
*/
): void {
this.checkValidWorkerChoiceStrategy(workerChoiceStrategy)
this.opts.workerChoiceStrategy = workerChoiceStrategy
+ this.workerChoiceStrategyContext.setWorkerChoiceStrategy(
+ this.opts.workerChoiceStrategy
+ )
+ if (workerChoiceStrategyOptions != null) {
+ this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
+ }
for (const workerNode of this.workerNodes) {
this.setWorkerNodeTasksUsage(workerNode, {
- run: 0,
+ ran: 0,
running: 0,
runTime: 0,
runTimeHistory: new CircularArray(),
waitTimeHistory: new CircularArray(),
avgWaitTime: 0,
medWaitTime: 0,
- error: 0
+ error: 0,
+ elu: undefined
})
- }
- this.workerChoiceStrategyContext.setWorkerChoiceStrategy(
- this.opts.workerChoiceStrategy
- )
- if (workerChoiceStrategyOptions != null) {
- this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
+ this.setWorkerStatistics(workerNode.worker)
}
}
this.checkValidTasksQueueOptions(tasksQueueOptions)
this.opts.tasksQueueOptions =
this.buildTasksQueueOptions(tasksQueueOptions)
- } else {
+ } else if (this.opts.tasksQueueOptions != null) {
delete this.opts.tasksQueueOptions
}
}
*
* The pool filling boolean status.
*/
- protected abstract get full (): boolean
+ protected get full (): boolean {
+ return this.workerNodes.length >= this.maxSize
+ }
/**
* Whether the pool is busy or not.
/** @inheritDoc */
public async execute (data?: Data, name?: string): Promise<Response> {
- const submissionTimestamp = performance.now()
+ const timestamp = performance.now()
const workerNodeKey = this.chooseWorkerNode()
const submittedTask: Task<Data> = {
name,
// eslint-disable-next-line @typescript-eslint/consistent-type-assertions
data: data ?? ({} as Data),
- submissionTimestamp,
+ timestamp,
id: crypto.randomUUID()
}
const res = new Promise<Response>((resolve, reject) => {
await Promise.all(
this.workerNodes.map(async (workerNode, workerNodeKey) => {
this.flushTasksQueue(workerNodeKey)
+ // FIXME: wait for tasks to be finished
await this.destroyWorker(workerNode.worker)
})
)
const workerTasksUsage =
this.workerNodes[this.getWorkerNodeKey(worker)].tasksUsage
--workerTasksUsage.running
- ++workerTasksUsage.run
+ ++workerTasksUsage.ran
if (message.error != null) {
++workerTasksUsage.error
}
this.updateRunTimeTasksUsage(workerTasksUsage, message)
this.updateWaitTimeTasksUsage(workerTasksUsage, message)
+ this.updateEluTasksUsage(workerTasksUsage, message)
}
private updateRunTimeTasksUsage (
workerTasksUsage: TasksUsage,
message: MessageValue<Response>
): void {
- if (this.workerChoiceStrategyContext.getRequiredStatistics().runTime) {
+ if (this.workerChoiceStrategyContext.getTaskStatistics().runTime) {
workerTasksUsage.runTime += message.runTime ?? 0
if (
- this.workerChoiceStrategyContext.getRequiredStatistics().avgRunTime &&
- workerTasksUsage.run !== 0
+ this.workerChoiceStrategyContext.getTaskStatistics().avgRunTime &&
+ workerTasksUsage.ran !== 0
) {
workerTasksUsage.avgRunTime =
- workerTasksUsage.runTime / workerTasksUsage.run
+ workerTasksUsage.runTime / workerTasksUsage.ran
}
if (
- this.workerChoiceStrategyContext.getRequiredStatistics().medRunTime &&
+ this.workerChoiceStrategyContext.getTaskStatistics().medRunTime &&
message.runTime != null
) {
workerTasksUsage.runTimeHistory.push(message.runTime)
workerTasksUsage: TasksUsage,
message: MessageValue<Response>
): void {
- if (this.workerChoiceStrategyContext.getRequiredStatistics().waitTime) {
+ if (this.workerChoiceStrategyContext.getTaskStatistics().waitTime) {
workerTasksUsage.waitTime += message.waitTime ?? 0
if (
- this.workerChoiceStrategyContext.getRequiredStatistics().avgWaitTime &&
- workerTasksUsage.run !== 0
+ this.workerChoiceStrategyContext.getTaskStatistics().avgWaitTime &&
+ workerTasksUsage.ran !== 0
) {
workerTasksUsage.avgWaitTime =
- workerTasksUsage.waitTime / workerTasksUsage.run
+ workerTasksUsage.waitTime / workerTasksUsage.ran
}
if (
- this.workerChoiceStrategyContext.getRequiredStatistics().medWaitTime &&
+ this.workerChoiceStrategyContext.getTaskStatistics().medWaitTime &&
message.waitTime != null
) {
workerTasksUsage.waitTimeHistory.push(message.waitTime)
}
}
+ private updateEluTasksUsage (
+ workerTasksUsage: TasksUsage,
+ message: MessageValue<Response>
+ ): void {
+ if (this.workerChoiceStrategyContext.getTaskStatistics().elu) {
+ if (workerTasksUsage.elu != null && message.elu != null) {
+ workerTasksUsage.elu = {
+ idle: workerTasksUsage.elu.idle + message.elu.idle,
+ active: workerTasksUsage.elu.active + message.elu.active,
+ utilization:
+ workerTasksUsage.elu.utilization + message.elu.utilization
+ }
+ } else if (message.elu != null) {
+ workerTasksUsage.elu = message.elu
+ }
+ }
+ }
+
/**
* Chooses a worker node for the next task.
*
) {
// Kill message received from the worker: no new tasks are submitted to that worker for a while ( > maxInactiveTime)
this.flushTasksQueue(currentWorkerNodeKey)
+ // FIXME: wait for tasks to be finished
void (this.destroyWorker(workerCreated) as Promise<void>)
}
})
this.emitter.emit(PoolEvents.error, error)
}
})
- if (this.opts.restartWorkerOnError === true) {
- worker.on('error', () => {
+ worker.on('error', () => {
+ if (this.opts.restartWorkerOnError === true) {
this.createAndSetupWorker()
- })
- }
+ }
+ })
worker.on('online', this.opts.onlineHandler ?? EMPTY_FUNCTION)
worker.on('exit', this.opts.exitHandler ?? EMPTY_FUNCTION)
worker.once('exit', () => {
this.pushWorkerNode(worker)
+ this.setWorkerStatistics(worker)
+
this.afterWorkerSetup(worker)
return worker
return this.workerNodes.push({
worker,
tasksUsage: {
- run: 0,
+ ran: 0,
running: 0,
runTime: 0,
runTimeHistory: new CircularArray(),
waitTimeHistory: new CircularArray(),
avgWaitTime: 0,
medWaitTime: 0,
- error: 0
+ error: 0,
+ elu: undefined
},
tasksQueue: new Queue<Task<Data>>()
})
this.flushTasksQueue(workerNodeKey)
}
}
+
+ private setWorkerStatistics (worker: Worker): void {
+ this.sendToWorker(worker, {
+ statistics: {
+ runTime: this.workerChoiceStrategyContext.getTaskStatistics().runTime,
+ waitTime: this.workerChoiceStrategyContext.getTaskStatistics().waitTime,
+ elu: this.workerChoiceStrategyContext.getTaskStatistics().elu
+ }
+ })
+ }
}
repositories / poolifier.git / blobdiff