import crypto from 'node:crypto'
+import { performance } from 'node:perf_hooks'
import type { MessageValue, PromiseResponseWrapper } from '../utility-types'
import {
DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS,
EMPTY_FUNCTION,
+ isPlainObject,
median
} from '../utils'
import { KillBehaviors, isKillBehavior } from '../worker/worker-options'
type IPool,
PoolEmitter,
PoolEvents,
+ type PoolInfo,
type PoolOptions,
- PoolType,
- type TasksQueueOptions
+ type PoolType,
+ PoolTypes,
+ type TasksQueueOptions,
+ type WorkerType
} from './pool'
-import type { IWorker, Task, TasksUsage, WorkerNode } from './worker'
+import type {
+ IWorker,
+ Task,
+ TaskStatistics,
+ WorkerNode,
+ WorkerUsage
+} from './worker'
import {
WorkerChoiceStrategies,
type WorkerChoiceStrategy,
/**
* Worker choice strategy context referencing a worker choice algorithm implementation.
- *
- * Default to a round robin algorithm.
*/
protected workerChoiceStrategyContext: WorkerChoiceStrategyContext<
Worker,
* @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 {
)
} else if (!Number.isSafeInteger(numberOfWorkers)) {
throw new TypeError(
- 'Cannot instantiate a pool with a non integer number of workers'
+ 'Cannot instantiate a pool with a non safe integer number of workers'
)
} else if (numberOfWorkers < 0) {
throw new RangeError(
'Cannot instantiate a pool with a negative number of workers'
)
- } else if (this.type === PoolType.FIXED && numberOfWorkers === 0) {
+ } else if (this.type === PoolTypes.fixed && numberOfWorkers === 0) {
throw new Error('Cannot instantiate a fixed pool with no worker')
}
}
private checkPoolOptions (opts: PoolOptions<Worker>): void {
- this.opts.workerChoiceStrategy =
- opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN
- this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy)
- this.opts.workerChoiceStrategyOptions =
- opts.workerChoiceStrategyOptions ?? DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
- this.opts.enableEvents = opts.enableEvents ?? true
- this.opts.enableTasksQueue = opts.enableTasksQueue ?? false
- if (this.opts.enableTasksQueue) {
- this.checkValidTasksQueueOptions(
- opts.tasksQueueOptions as TasksQueueOptions
- )
- this.opts.tasksQueueOptions = this.buildTasksQueueOptions(
- opts.tasksQueueOptions as TasksQueueOptions
+ if (isPlainObject(opts)) {
+ this.opts.workerChoiceStrategy =
+ opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN
+ this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy)
+ this.opts.workerChoiceStrategyOptions =
+ opts.workerChoiceStrategyOptions ??
+ DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ this.checkValidWorkerChoiceStrategyOptions(
+ this.opts.workerChoiceStrategyOptions
)
+ this.opts.restartWorkerOnError = opts.restartWorkerOnError ?? true
+ this.opts.enableEvents = opts.enableEvents ?? true
+ this.opts.enableTasksQueue = opts.enableTasksQueue ?? false
+ if (this.opts.enableTasksQueue) {
+ this.checkValidTasksQueueOptions(
+ opts.tasksQueueOptions as TasksQueueOptions
+ )
+ this.opts.tasksQueueOptions = this.buildTasksQueueOptions(
+ opts.tasksQueueOptions as TasksQueueOptions
+ )
+ }
+ } else {
+ throw new TypeError('Invalid pool options: must be a plain object')
}
}
}
}
+ private checkValidWorkerChoiceStrategyOptions (
+ workerChoiceStrategyOptions: WorkerChoiceStrategyOptions
+ ): void {
+ if (!isPlainObject(workerChoiceStrategyOptions)) {
+ throw new TypeError(
+ 'Invalid worker choice strategy options: must be a plain object'
+ )
+ }
+ if (
+ workerChoiceStrategyOptions.weights != null &&
+ Object.keys(workerChoiceStrategyOptions.weights).length !== this.maxSize
+ ) {
+ throw new Error(
+ 'Invalid worker choice strategy options: must have a weight for each worker node'
+ )
+ }
+ }
+
private checkValidTasksQueueOptions (
tasksQueueOptions: TasksQueueOptions
): void {
+ if (tasksQueueOptions != null && !isPlainObject(tasksQueueOptions)) {
+ throw new TypeError('Invalid tasks queue options: must be a plain object')
+ }
if ((tasksQueueOptions?.concurrency as number) <= 0) {
throw new Error(
`Invalid worker tasks concurrency '${
}
/** @inheritDoc */
- public abstract get type (): PoolType
+ public get info (): PoolInfo {
+ return {
+ type: this.type,
+ worker: this.worker,
+ minSize: this.minSize,
+ maxSize: this.maxSize,
+ workerNodes: this.workerNodes.length,
+ idleWorkerNodes: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ workerNode.workerUsage.tasks.executing === 0
+ ? accumulator + 1
+ : accumulator,
+ 0
+ ),
+ busyWorkerNodes: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ workerNode.workerUsage.tasks.executing > 0
+ ? accumulator + 1
+ : accumulator,
+ 0
+ ),
+ executedTasks: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ accumulator + workerNode.workerUsage.tasks.executed,
+ 0
+ ),
+ executingTasks: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ accumulator + workerNode.workerUsage.tasks.executing,
+ 0
+ ),
+ queuedTasks: this.workerNodes.reduce(
+ (accumulator, workerNode) => accumulator + workerNode.tasksQueue.size,
+ 0
+ ),
+ maxQueuedTasks: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ accumulator + workerNode.tasksQueue.maxSize,
+ 0
+ ),
+ failedTasks: this.workerNodes.reduce(
+ (accumulator, workerNode) =>
+ accumulator + workerNode.workerUsage.tasks.failed,
+ 0
+ )
+ }
+ }
/**
- * Number of tasks running in the pool.
+ * Pool type.
+ *
+ * If it is `'dynamic'`, it provides the `max` property.
*/
- private get numberOfRunningTasks (): number {
- return this.workerNodes.reduce(
- (accumulator, workerNode) => accumulator + workerNode.tasksUsage.running,
- 0
- )
- }
+ protected abstract get type (): PoolType
/**
- * Number of tasks queued in the pool.
+ * Gets the worker type.
*/
- private get numberOfQueuedTasks (): number {
- if (this.opts.enableTasksQueue === false) {
- return 0
- }
- return this.workerNodes.reduce(
- (accumulator, workerNode) => accumulator + workerNode.tasksQueue.size,
- 0
- )
- }
+ protected abstract get worker (): WorkerType
+
+ /**
+ * Pool minimum size.
+ */
+ protected abstract get minSize (): number
+
+ /**
+ * Pool maximum size.
+ */
+ protected abstract get maxSize (): number
/**
* Gets the given worker its worker node key.
): void {
this.checkValidWorkerChoiceStrategy(workerChoiceStrategy)
this.opts.workerChoiceStrategy = workerChoiceStrategy
- for (const workerNode of this.workerNodes) {
- this.setWorkerNodeTasksUsage(workerNode, {
- run: 0,
- running: 0,
- runTime: 0,
- runTimeHistory: new CircularArray(),
- avgRunTime: 0,
- medRunTime: 0,
- error: 0
- })
- }
this.workerChoiceStrategyContext.setWorkerChoiceStrategy(
this.opts.workerChoiceStrategy
)
if (workerChoiceStrategyOptions != null) {
this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
}
+ for (const workerNode of this.workerNodes) {
+ this.setWorkerNodeTasksUsage(
+ workerNode,
+ this.getWorkerUsage(workerNode.worker)
+ )
+ this.setWorkerStatistics(workerNode.worker)
+ }
}
/** @inheritDoc */
public setWorkerChoiceStrategyOptions (
workerChoiceStrategyOptions: WorkerChoiceStrategyOptions
): void {
+ this.checkValidWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
this.opts.workerChoiceStrategyOptions = workerChoiceStrategyOptions
this.workerChoiceStrategyContext.setOptions(
this.opts.workerChoiceStrategyOptions
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.
*/
protected abstract get busy (): boolean
+ /**
+ * Whether worker nodes are executing at least one task.
+ *
+ * @returns Worker nodes busyness boolean status.
+ */
protected internalBusy (): boolean {
return (
this.workerNodes.findIndex(workerNode => {
- return workerNode.tasksUsage?.running === 0
+ return workerNode.workerUsage.tasks.executing === 0
}) === -1
)
}
/** @inheritDoc */
- public async execute (data?: Data): Promise<Response> {
- const [workerNodeKey, workerNode] = this.chooseWorkerNode()
+ public async execute (data?: Data, name?: string): Promise<Response> {
+ 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),
+ timestamp,
id: crypto.randomUUID()
}
const res = new Promise<Response>((resolve, reject) => {
this.promiseResponseMap.set(submittedTask.id as string, {
resolve,
reject,
- worker: workerNode.worker
+ worker: this.workerNodes[workerNodeKey].worker
})
})
if (
this.opts.enableTasksQueue === true &&
(this.busy ||
- this.workerNodes[workerNodeKey].tasksUsage.running >=
+ this.workerNodes[workerNodeKey].workerUsage.tasks.executing >=
((this.opts.tasksQueueOptions as TasksQueueOptions)
.concurrency as number))
) {
} else {
this.executeTask(workerNodeKey, submittedTask)
}
+ this.workerChoiceStrategyContext.update(workerNodeKey)
this.checkAndEmitEvents()
// eslint-disable-next-line @typescript-eslint/return-await
return res
await Promise.all(
this.workerNodes.map(async (workerNode, workerNodeKey) => {
this.flushTasksQueue(workerNodeKey)
+ // FIXME: wait for tasks to be finished
await this.destroyWorker(workerNode.worker)
})
)
}
/**
- * Shutdowns the given worker.
+ * Terminates the given worker.
*
* @param worker - A worker within `workerNodes`.
*/
* Can be overridden.
*
* @param workerNodeKey - The worker node key.
+ * @param task - The task to execute.
*/
- protected beforeTaskExecutionHook (workerNodeKey: number): void {
- ++this.workerNodes[workerNodeKey].tasksUsage.running
+ protected beforeTaskExecutionHook (
+ workerNodeKey: number,
+ task: Task<Data>
+ ): void {
+ const workerUsage = this.workerNodes[workerNodeKey].workerUsage
+ ++workerUsage.tasks.executing
+ this.updateWaitTimeWorkerUsage(workerUsage, task)
}
/**
worker: Worker,
message: MessageValue<Response>
): void {
- const workerTasksUsage = this.getWorkerTasksUsage(worker)
- --workerTasksUsage.running
- ++workerTasksUsage.run
- if (message.error != null) {
- ++workerTasksUsage.error
+ const workerUsage =
+ this.workerNodes[this.getWorkerNodeKey(worker)].workerUsage
+ this.updateTaskStatisticsWorkerUsage(workerUsage, message)
+ this.updateRunTimeWorkerUsage(workerUsage, message)
+ this.updateEluWorkerUsage(workerUsage, message)
+ }
+
+ private updateTaskStatisticsWorkerUsage (
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+ ): void {
+ const workerTaskStatistics = workerUsage.tasks
+ --workerTaskStatistics.executing
+ ++workerTaskStatistics.executed
+ if (message.taskError != null) {
+ ++workerTaskStatistics.failed
}
- if (this.workerChoiceStrategyContext.getRequiredStatistics().runTime) {
- workerTasksUsage.runTime += message.runTime ?? 0
+ }
+
+ private updateRunTimeWorkerUsage (
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+ ): void {
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime
+ .aggregate
+ ) {
+ workerUsage.runTime.aggregate += message.taskPerformance?.runTime ?? 0
if (
- this.workerChoiceStrategyContext.getRequiredStatistics().avgRunTime &&
- workerTasksUsage.run !== 0
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime
+ .average &&
+ workerUsage.tasks.executed !== 0
) {
- workerTasksUsage.avgRunTime =
- workerTasksUsage.runTime / workerTasksUsage.run
+ workerUsage.runTime.average =
+ workerUsage.runTime.aggregate /
+ (workerUsage.tasks.executed - workerUsage.tasks.failed)
}
- if (this.workerChoiceStrategyContext.getRequiredStatistics().medRunTime) {
- workerTasksUsage.runTimeHistory.push(message.runTime ?? 0)
- workerTasksUsage.medRunTime = median(workerTasksUsage.runTimeHistory)
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().runTime
+ .median &&
+ message.taskPerformance?.runTime != null
+ ) {
+ workerUsage.runTime.history.push(message.taskPerformance.runTime)
+ workerUsage.runTime.median = median(workerUsage.runTime.history)
+ }
+ }
+ }
+
+ private updateWaitTimeWorkerUsage (
+ workerUsage: WorkerUsage,
+ task: Task<Data>
+ ): void {
+ const timestamp = performance.now()
+ const taskWaitTime = timestamp - (task.timestamp ?? timestamp)
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().waitTime
+ .aggregate
+ ) {
+ workerUsage.waitTime.aggregate += taskWaitTime ?? 0
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements()
+ .waitTime.average &&
+ workerUsage.tasks.executed !== 0
+ ) {
+ workerUsage.waitTime.average =
+ workerUsage.waitTime.aggregate /
+ (workerUsage.tasks.executed - workerUsage.tasks.failed)
+ }
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements()
+ .waitTime.median &&
+ taskWaitTime != null
+ ) {
+ workerUsage.waitTime.history.push(taskWaitTime)
+ workerUsage.waitTime.median = median(workerUsage.waitTime.history)
+ }
+ }
+ }
+
+ private updateEluWorkerUsage (
+ workerUsage: WorkerUsage,
+ message: MessageValue<Response>
+ ): void {
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu
+ .aggregate
+ ) {
+ if (workerUsage.elu != null && message.taskPerformance?.elu != null) {
+ workerUsage.elu.idle.aggregate += message.taskPerformance.elu.idle
+ workerUsage.elu.active.aggregate += message.taskPerformance.elu.active
+ workerUsage.elu.utilization =
+ (workerUsage.elu.utilization +
+ message.taskPerformance.elu.utilization) /
+ 2
+ } else if (message.taskPerformance?.elu != null) {
+ workerUsage.elu.idle.aggregate = message.taskPerformance.elu.idle
+ workerUsage.elu.active.aggregate = message.taskPerformance.elu.active
+ workerUsage.elu.utilization = message.taskPerformance.elu.utilization
+ }
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu
+ .average &&
+ workerUsage.tasks.executed !== 0
+ ) {
+ const executedTasks =
+ workerUsage.tasks.executed - workerUsage.tasks.failed
+ workerUsage.elu.idle.average =
+ workerUsage.elu.idle.aggregate / executedTasks
+ workerUsage.elu.active.average =
+ workerUsage.elu.active.aggregate / executedTasks
+ }
+ if (
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements().elu
+ .median &&
+ message.taskPerformance?.elu != null
+ ) {
+ workerUsage.elu.idle.history.push(message.taskPerformance.elu.idle)
+ workerUsage.elu.active.history.push(message.taskPerformance.elu.active)
+ workerUsage.elu.idle.median = median(workerUsage.elu.idle.history)
+ workerUsage.elu.active.median = median(workerUsage.elu.active.history)
}
}
}
/**
* Chooses a worker node for the next task.
*
- * The default uses a round robin algorithm to distribute the load.
+ * The default worker choice strategy uses a round robin algorithm to distribute the tasks.
*
- * @returns [worker node key, worker node].
+ * @returns The worker node key
*/
- protected chooseWorkerNode (): [number, WorkerNode<Worker, Data>] {
- let workerNodeKey: number
- if (this.type === PoolType.DYNAMIC && !this.full && this.internalBusy()) {
- const workerCreated = this.createAndSetupWorker()
- this.registerWorkerMessageListener(workerCreated, message => {
- if (
- isKillBehavior(KillBehaviors.HARD, message.kill) ||
- (message.kill != null &&
- this.getWorkerTasksUsage(workerCreated)?.running === 0)
- ) {
- // Kill message received from the worker: no new tasks are submitted to that worker for a while ( > maxInactiveTime)
- this.flushTasksQueueByWorker(workerCreated)
- void (this.destroyWorker(workerCreated) as Promise<void>)
- }
- })
- workerNodeKey = this.getWorkerNodeKey(workerCreated)
- } else {
- workerNodeKey = this.workerChoiceStrategyContext.execute()
+ private chooseWorkerNode (): number {
+ if (this.shallCreateDynamicWorker()) {
+ const worker = this.createAndSetupDynamicWorker()
+ if (
+ this.workerChoiceStrategyContext.getStrategyPolicy().useDynamicWorker
+ ) {
+ return this.getWorkerNodeKey(worker)
+ }
}
- return [workerNodeKey, this.workerNodes[workerNodeKey]]
+ return this.workerChoiceStrategyContext.execute()
+ }
+
+ /**
+ * Conditions for dynamic worker creation.
+ *
+ * @returns Whether to create a dynamic worker or not.
+ */
+ private shallCreateDynamicWorker (): boolean {
+ return this.type === PoolTypes.dynamic && !this.full && this.internalBusy()
}
/**
>(worker: Worker, listener: (message: MessageValue<Message>) => void): void
/**
- * Returns a newly created worker.
+ * Creates a new worker.
+ *
+ * @returns Newly created worker.
*/
protected abstract createWorker (): Worker
worker.on('message', this.opts.messageHandler ?? EMPTY_FUNCTION)
worker.on('error', this.opts.errorHandler ?? EMPTY_FUNCTION)
+ worker.on('error', error => {
+ if (this.emitter != null) {
+ this.emitter.emit(PoolEvents.error, 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
}
+ /**
+ * Creates a new dynamic worker and sets it up completely in the pool worker nodes.
+ *
+ * @returns New, completely set up dynamic worker.
+ */
+ protected createAndSetupDynamicWorker (): Worker {
+ const worker = this.createAndSetupWorker()
+ this.registerWorkerMessageListener(worker, message => {
+ const workerNodeKey = this.getWorkerNodeKey(worker)
+ if (
+ isKillBehavior(KillBehaviors.HARD, message.kill) ||
+ (message.kill != null &&
+ ((this.opts.enableTasksQueue === false &&
+ this.workerNodes[workerNodeKey].workerUsage.tasks.executing ===
+ 0) ||
+ (this.opts.enableTasksQueue === true &&
+ this.workerNodes[workerNodeKey].workerUsage.tasks.executing ===
+ 0 &&
+ this.tasksQueueSize(workerNodeKey) === 0)))
+ ) {
+ // Kill message received from the worker: no new tasks are submitted to that worker for a while ( > maxInactiveTime)
+ void (this.destroyWorker(worker) as Promise<void>)
+ }
+ })
+ return worker
+ }
+
/**
* This function is the listener registered for each worker message.
*
// Task execution response received
const promiseResponse = this.promiseResponseMap.get(message.id)
if (promiseResponse != null) {
- if (message.error != null) {
- promiseResponse.reject(message.error)
+ if (message.taskError != null) {
+ promiseResponse.reject(message.taskError.message)
+ if (this.emitter != null) {
+ this.emitter.emit(PoolEvents.taskError, message.taskError)
+ }
} else {
promiseResponse.resolve(message.data as Response)
}
this.dequeueTask(workerNodeKey) as Task<Data>
)
}
+ this.workerChoiceStrategyContext.update(workerNodeKey)
}
}
}
}
private checkAndEmitEvents (): void {
- if (this.opts.enableEvents === true) {
+ if (this.emitter != null) {
if (this.busy) {
- this.emitter?.emit(PoolEvents.busy)
+ this.emitter?.emit(PoolEvents.busy, this.info)
}
- if (this.type === PoolType.DYNAMIC && this.full) {
- this.emitter?.emit(PoolEvents.full)
+ if (this.type === PoolTypes.dynamic && this.full) {
+ this.emitter?.emit(PoolEvents.full, this.info)
}
}
}
* Sets the given worker node its tasks usage in the pool.
*
* @param workerNode - The worker node.
- * @param tasksUsage - The worker node tasks usage.
+ * @param workerUsage - The worker usage.
*/
private setWorkerNodeTasksUsage (
workerNode: WorkerNode<Worker, Data>,
- tasksUsage: TasksUsage
+ workerUsage: WorkerUsage
): void {
- workerNode.tasksUsage = tasksUsage
- }
-
- /**
- * Gets the given worker its tasks usage in the pool.
- *
- * @param worker - The worker.
- * @throws Error if the worker is not found in the pool worker nodes.
- * @returns The worker tasks usage.
- */
- private getWorkerTasksUsage (worker: Worker): TasksUsage {
- const workerNodeKey = this.getWorkerNodeKey(worker)
- if (workerNodeKey !== -1) {
- return this.workerNodes[workerNodeKey].tasksUsage
- }
- throw new Error('Worker could not be found in the pool worker nodes')
+ workerNode.workerUsage = workerUsage
}
/**
private pushWorkerNode (worker: Worker): number {
return this.workerNodes.push({
worker,
- tasksUsage: {
- run: 0,
- running: 0,
- runTime: 0,
- runTimeHistory: new CircularArray(),
- avgRunTime: 0,
- medRunTime: 0,
- error: 0
- },
+ workerUsage: this.getWorkerUsage(worker),
tasksQueue: new Queue<Task<Data>>()
})
}
- /**
- * Sets the given worker in the pool worker nodes.
- *
- * @param workerNodeKey - The worker node key.
- * @param worker - The worker.
- * @param tasksUsage - The worker tasks usage.
- * @param tasksQueue - The worker task queue.
- */
- private setWorkerNode (
- workerNodeKey: number,
- worker: Worker,
- tasksUsage: TasksUsage,
- tasksQueue: Queue<Task<Data>>
- ): void {
- this.workerNodes[workerNodeKey] = {
- worker,
- tasksUsage,
- tasksQueue
- }
- }
+ // /**
+ // * Sets the given worker in the pool worker nodes.
+ // *
+ // * @param workerNodeKey - The worker node key.
+ // * @param worker - The worker.
+ // * @param workerUsage - The worker usage.
+ // * @param tasksQueue - The worker task queue.
+ // */
+ // private setWorkerNode (
+ // workerNodeKey: number,
+ // worker: Worker,
+ // workerUsage: WorkerUsage,
+ // tasksQueue: Queue<Task<Data>>
+ // ): void {
+ // this.workerNodes[workerNodeKey] = {
+ // worker,
+ // workerUsage,
+ // tasksQueue
+ // }
+ // }
/**
* Removes the given worker from the pool worker nodes.
*/
private removeWorkerNode (worker: Worker): void {
const workerNodeKey = this.getWorkerNodeKey(worker)
- this.workerNodes.splice(workerNodeKey, 1)
- this.workerChoiceStrategyContext.remove(workerNodeKey)
+ if (workerNodeKey !== -1) {
+ this.workerNodes.splice(workerNodeKey, 1)
+ this.workerChoiceStrategyContext.remove(workerNodeKey)
+ }
}
private executeTask (workerNodeKey: number, task: Task<Data>): void {
- this.beforeTaskExecutionHook(workerNodeKey)
+ this.beforeTaskExecutionHook(workerNodeKey, task)
this.sendToWorker(this.workerNodes[workerNodeKey].worker, task)
}
}
}
- private flushTasksQueueByWorker (worker: Worker): void {
- const workerNodeKey = this.getWorkerNodeKey(worker)
- this.flushTasksQueue(workerNodeKey)
- }
-
private flushTasksQueues (): void {
for (const [workerNodeKey] of this.workerNodes.entries()) {
this.flushTasksQueue(workerNodeKey)
}
}
+
+ private setWorkerStatistics (worker: Worker): void {
+ this.sendToWorker(worker, {
+ statistics: {
+ runTime:
+ this.workerChoiceStrategyContext.getTaskStatisticsRequirements()
+ .runTime.aggregate,
+ elu: this.workerChoiceStrategyContext.getTaskStatisticsRequirements()
+ .elu.aggregate
+ }
+ })
+ }
+
+ private getWorkerUsage (worker: Worker): WorkerUsage {
+ return {
+ tasks: this.getTaskStatistics(worker),
+ runTime: {
+ aggregate: 0,
+ average: 0,
+ median: 0,
+ history: new CircularArray()
+ },
+ waitTime: {
+ aggregate: 0,
+ average: 0,
+ median: 0,
+ history: new CircularArray()
+ },
+ elu: {
+ idle: {
+ aggregate: 0,
+ average: 0,
+ median: 0,
+ history: new CircularArray()
+ },
+ active: {
+ aggregate: 0,
+ average: 0,
+ median: 0,
+ history: new CircularArray()
+ },
+ utilization: 0
+ }
+ }
+ }
+
+ private getTaskStatistics (worker: Worker): TaskStatistics {
+ const queueSize =
+ this.workerNodes[this.getWorkerNodeKey(worker)]?.tasksQueue?.size
+ return {
+ executed: 0,
+ executing: 0,
+ get queued (): number {
+ return queueSize ?? 0
+ },
+ failed: 0
+ }
+ }
}
repositories / poolifier.git / blobdiff