import crypto from 'node:crypto'
import type { MessageValue, PromiseResponseWrapper } from '../utility-types'
-import { EMPTY_FUNCTION, median } from '../utils'
+import {
+ DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS,
+ EMPTY_FUNCTION,
+ median
+} from '../utils'
import { KillBehaviors, isKillBehavior } from '../worker/worker-options'
-import { PoolEvents, type PoolOptions } from './pool'
-import { PoolEmitter } from './pool'
-import type { IPoolInternal } from './pool-internal'
-import { PoolType } from './pool-internal'
+import { CircularArray } from '../circular-array'
+import {
+ type IPool,
+ PoolEmitter,
+ PoolEvents,
+ type PoolOptions,
+ PoolType,
+ type TasksQueueOptions
+} from './pool'
import type { IWorker, Task, TasksUsage, WorkerNode } from './worker'
import {
WorkerChoiceStrategies,
- type WorkerChoiceStrategy
+ type WorkerChoiceStrategy,
+ type WorkerChoiceStrategyOptions
} from './selection-strategies/selection-strategies-types'
import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context'
-import { CircularArray } from '../circular-array'
/**
* Base class that implements some shared logic for all poolifier pools.
*
* @typeParam Worker - Type of worker which manages this pool.
* @typeParam Data - Type of data sent to the worker. This can only be serializable data.
- * @typeParam Response - Type of response of execution. This can only be serializable data.
+ * @typeParam Response - Type of execution response. This can only be serializable data.
*/
export abstract class AbstractPool<
Worker extends IWorker,
Data = unknown,
Response = unknown
-> implements IPoolInternal<Worker, Data, Response> {
+> implements IPool<Worker, Data, Response> {
/** @inheritDoc */
public readonly workerNodes: Array<WorkerNode<Worker, Data>> = []
* Constructs a new poolifier pool.
*
* @param numberOfWorkers - Number of workers that this pool should manage.
- * @param filePath - Path to the worker-file.
+ * @param filePath - Path to the worker file.
* @param opts - Options for the pool.
*/
public constructor (
this.checkFilePath(this.filePath)
this.checkPoolOptions(this.opts)
- this.chooseWorkerNode.bind(this)
- this.executeTask.bind(this)
- this.enqueueTask.bind(this)
- this.checkAndEmitEvents.bind(this)
+ this.chooseWorkerNode = this.chooseWorkerNode.bind(this)
+ this.executeTask = this.executeTask.bind(this)
+ this.enqueueTask = this.enqueueTask.bind(this)
+ this.checkAndEmitEvents = this.checkAndEmitEvents.bind(this)
this.setupHook()
opts.workerChoiceStrategy ?? WorkerChoiceStrategies.ROUND_ROBIN
this.checkValidWorkerChoiceStrategy(this.opts.workerChoiceStrategy)
this.opts.workerChoiceStrategyOptions =
- opts.workerChoiceStrategyOptions ?? { medRunTime: false }
+ 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
+ )
+ }
}
private checkValidWorkerChoiceStrategy (
}
}
+ private checkValidTasksQueueOptions (
+ tasksQueueOptions: TasksQueueOptions
+ ): void {
+ if ((tasksQueueOptions?.concurrency as number) <= 0) {
+ throw new Error(
+ `Invalid worker tasks concurrency '${
+ tasksQueueOptions.concurrency as number
+ }'`
+ )
+ }
+ }
+
/** @inheritDoc */
public abstract get type (): PoolType
/** @inheritDoc */
public setWorkerChoiceStrategy (
- workerChoiceStrategy: WorkerChoiceStrategy
+ workerChoiceStrategy: WorkerChoiceStrategy,
+ workerChoiceStrategyOptions?: WorkerChoiceStrategyOptions
): void {
this.checkValidWorkerChoiceStrategy(workerChoiceStrategy)
this.opts.workerChoiceStrategy = workerChoiceStrategy
})
}
this.workerChoiceStrategyContext.setWorkerChoiceStrategy(
- workerChoiceStrategy
+ this.opts.workerChoiceStrategy
)
+ if (workerChoiceStrategyOptions != null) {
+ this.setWorkerChoiceStrategyOptions(workerChoiceStrategyOptions)
+ }
}
/** @inheritDoc */
- public abstract get full (): boolean
+ public setWorkerChoiceStrategyOptions (
+ workerChoiceStrategyOptions: WorkerChoiceStrategyOptions
+ ): void {
+ this.opts.workerChoiceStrategyOptions = workerChoiceStrategyOptions
+ this.workerChoiceStrategyContext.setOptions(
+ this.opts.workerChoiceStrategyOptions
+ )
+ }
/** @inheritDoc */
- public abstract get busy (): boolean
-
- protected internalBusy (): boolean {
- return this.findFreeWorkerNodeKey() === -1
+ public enableTasksQueue (
+ enable: boolean,
+ tasksQueueOptions?: TasksQueueOptions
+ ): void {
+ if (this.opts.enableTasksQueue === true && !enable) {
+ this.flushTasksQueues()
+ }
+ this.opts.enableTasksQueue = enable
+ this.setTasksQueueOptions(tasksQueueOptions as TasksQueueOptions)
}
/** @inheritDoc */
- public findFreeWorkerNodeKey (): number {
- return this.workerNodes.findIndex(workerNode => {
- return workerNode.tasksUsage?.running === 0
- })
+ public setTasksQueueOptions (tasksQueueOptions: TasksQueueOptions): void {
+ if (this.opts.enableTasksQueue === true) {
+ this.checkValidTasksQueueOptions(tasksQueueOptions)
+ this.opts.tasksQueueOptions =
+ this.buildTasksQueueOptions(tasksQueueOptions)
+ } else {
+ delete this.opts.tasksQueueOptions
+ }
+ }
+
+ private buildTasksQueueOptions (
+ tasksQueueOptions: TasksQueueOptions
+ ): TasksQueueOptions {
+ return {
+ concurrency: tasksQueueOptions?.concurrency ?? 1
+ }
+ }
+
+ /**
+ * Whether the pool is full or not.
+ *
+ * The pool filling boolean status.
+ */
+ protected abstract get full (): boolean
+
+ /**
+ * Whether the pool is busy or not.
+ *
+ * The pool busyness boolean status.
+ */
+ protected abstract get busy (): boolean
+
+ protected internalBusy (): boolean {
+ return (
+ this.workerNodes.findIndex(workerNode => {
+ return workerNode.tasksUsage?.running === 0
+ }) === -1
+ )
}
/** @inheritDoc */
- public async execute (data: Data): Promise<Response> {
+ public async execute (data?: Data): Promise<Response> {
const [workerNodeKey, workerNode] = this.chooseWorkerNode()
const submittedTask: Task<Data> = {
// eslint-disable-next-line @typescript-eslint/consistent-type-assertions
id: crypto.randomUUID()
}
const res = new Promise<Response>((resolve, reject) => {
- this.promiseResponseMap.set(submittedTask.id, {
+ this.promiseResponseMap.set(submittedTask.id as string, {
resolve,
reject,
worker: workerNode.worker
})
if (
this.opts.enableTasksQueue === true &&
- (this.busy || this.workerNodes[workerNodeKey].tasksUsage.running > 0)
+ (this.busy ||
+ this.workerNodes[workerNodeKey].tasksUsage.running >=
+ ((this.opts.tasksQueueOptions as TasksQueueOptions)
+ .concurrency as number))
) {
this.enqueueTask(workerNodeKey, submittedTask)
} else {
worker: Worker,
message: MessageValue<Response>
): void {
- const workerTasksUsage = this.getWorkerTasksUsage(worker) as TasksUsage
+ const workerTasksUsage = this.getWorkerTasksUsage(worker)
--workerTasksUsage.running
++workerTasksUsage.run
if (message.error != null) {
*/
protected chooseWorkerNode (): [number, WorkerNode<Worker, Data>] {
let workerNodeKey: number
- if (
- this.type === PoolType.DYNAMIC &&
- !this.full &&
- this.findFreeWorkerNodeKey() === -1
- ) {
+ if (this.type === PoolType.DYNAMIC && !this.full && this.internalBusy()) {
const workerCreated = this.createAndSetupWorker()
this.registerWorkerMessageListener(workerCreated, message => {
if (
) {
// 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)
+ void (this.destroyWorker(workerCreated) as Promise<void>)
}
})
workerNodeKey = this.getWorkerNodeKey(workerCreated)
* 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 | undefined {
+ private getWorkerTasksUsage (worker: Worker): TasksUsage {
const workerNodeKey = this.getWorkerNodeKey(worker)
if (workerNodeKey !== -1) {
return this.workerNodes[workerNodeKey].tasksUsage
this.sendToWorker(this.workerNodes[workerNodeKey].worker, task)
}
- private enqueueTask (workerNodeKey: number, task: Task<Data>): void {
- this.workerNodes[workerNodeKey].tasksQueue.push(task)
+ private enqueueTask (workerNodeKey: number, task: Task<Data>): number {
+ return this.workerNodes[workerNodeKey].tasksQueue.push(task)
}
private dequeueTask (workerNodeKey: number): Task<Data> | undefined {
const workerNodeKey = this.getWorkerNodeKey(worker)
this.flushTasksQueue(workerNodeKey)
}
+
+ private flushTasksQueues (): void {
+ for (const [workerNodeKey] of this.workerNodes.entries()) {
+ this.flushTasksQueue(workerNodeKey)
+ }
+ }
}
repositories / poolifier.git / blobdiff