} from '../utility-types'
import { EMPTY_FUNCTION } from '../utils'
import { isKillBehavior, KillBehaviors } from '../worker/worker-options'
-import type { AbstractPoolWorker } from './abstract-pool-worker'
import type { PoolOptions } from './pool'
+import { PoolEmitter } from './pool'
import type { IPoolInternal, TasksUsage } from './pool-internal'
-import { PoolEmitter, PoolType } from './pool-internal'
+import { PoolType } from './pool-internal'
+import type { IPoolWorker } from './pool-worker'
import {
WorkerChoiceStrategies,
WorkerChoiceStrategy
} from './selection-strategies/selection-strategies-types'
import { WorkerChoiceStrategyContext } from './selection-strategies/worker-choice-strategy-context'
-const WORKER_NOT_FOUND_TASKS_USAGE_MAP =
- 'Worker could not be found in worker tasks usage map'
-
/**
- * Base class containing some shared logic for all poolifier pools.
+ * Base class that implements some shared logic for all poolifier pools.
*
* @template Worker Type of worker which manages this pool.
* @template Data Type of data sent to the worker. This can only be serializable data.
* @template Response Type of response of execution. This can only be serializable data.
*/
export abstract class AbstractPool<
- Worker extends AbstractPoolWorker,
+ Worker extends IPoolWorker,
Data = unknown,
Response = unknown
> implements IPoolInternal<Worker, Data, Response> {
/** @inheritDoc */
public readonly workers: Worker[] = []
- /**
- * The workers tasks usage map.
- *
- * `key`: The `Worker`
- * `value`: Worker tasks usage statistics.
- */
- protected workersTasksUsage: Map<Worker, TasksUsage> = new Map<
+ /** @inheritDoc */
+ public readonly workersTasksUsage: Map<Worker, TasksUsage> = new Map<
Worker,
TasksUsage
>()
/** @inheritDoc */
public readonly emitter?: PoolEmitter
- /** @inheritDoc */
- public readonly max?: number
-
/**
* The promise map.
*
public readonly filePath: string,
public readonly opts: PoolOptions<Worker>
) {
- if (!this.isMain()) {
+ if (this.isMain() === false) {
throw new Error('Cannot start a pool from a worker!')
}
this.checkNumberOfWorkers(this.numberOfWorkers)
this.createAndSetupWorker()
}
- if (this.opts.enableEvents) {
+ if (this.opts.enableEvents === true) {
this.emitter = new PoolEmitter()
}
this.workerChoiceStrategyContext = new WorkerChoiceStrategyContext(
throw new Error(
'Cannot instantiate a pool without specifying the number of workers'
)
- } else if (!Number.isSafeInteger(numberOfWorkers)) {
- throw new Error(
+ } else if (Number.isSafeInteger(numberOfWorkers) === false) {
+ throw new TypeError(
'Cannot instantiate a pool with a non integer number of workers'
)
} else if (numberOfWorkers < 0) {
- throw new Error(
+ throw new RangeError(
'Cannot instantiate a pool with a negative number of workers'
)
} else if (this.type === PoolType.FIXED && numberOfWorkers === 0) {
workerChoiceStrategy: WorkerChoiceStrategy
): void {
this.opts.workerChoiceStrategy = workerChoiceStrategy
+ for (const worker of this.workers) {
+ this.resetWorkerTasksUsage(worker)
+ }
this.workerChoiceStrategyContext.setWorkerChoiceStrategy(
workerChoiceStrategy
)
public execute (data: Data): Promise<Response> {
// Configure worker to handle message with the specified task
const worker = this.chooseWorker()
- const messageId = ++this.nextMessageId
- const res = this.internalExecute(worker, messageId)
+ const res = this.internalExecute(worker, this.nextMessageId)
this.checkAndEmitBusy()
- data = data ?? ({} as Data)
- this.sendToWorker(worker, { data, id: messageId })
+ this.sendToWorker(worker, {
+ data: data ?? ({} as Data),
+ id: this.nextMessageId
+ })
+ ++this.nextMessageId
return res
}
}
/**
- * Shut down given worker.
+ * Shutdowns given worker.
*
* @param worker A worker within `workers`.
*/
/**
* Removes the given worker from the pool.
*
- * @param worker Worker that will be removed.
+ * @param worker The worker that will be removed.
*/
protected removeWorker (worker: Worker): void {
// Clean worker from data structure
}
/**
- * Choose a worker for the next task.
+ * Chooses a worker for the next task.
*
* The default implementation uses a round robin algorithm to distribute the load.
*
}
/**
- * Send a message to the given worker.
+ * Sends a message to the given worker.
*
* @param worker The worker which should receive the message.
* @param message The message.
): void
/**
- * Register a listener callback on a given worker.
+ * Registers a listener callback on a given worker.
*
- * @param worker A worker.
- * @param listener A message listener callback.
+ * @param worker The worker which should register a listener.
+ * @param listener The message listener callback.
*/
protected abstract registerWorkerMessageListener<
Message extends Data | Response
this.workers.push(worker)
// Init worker tasks usage map
- this.workersTasksUsage.set(worker, {
- run: 0,
- running: 0,
- runTime: 0,
- avgRunTime: 0
- })
+ this.initWorkerTasksUsage(worker)
this.afterWorkerSetup(worker)
if (message.id !== undefined) {
const promise = this.promiseMap.get(message.id)
if (promise !== undefined) {
+ if (message.error) {
+ promise.reject(message.error)
+ } else {
+ promise.resolve(message.data as Response)
+ }
this.afterPromiseWorkerResponseHook(message, promise)
- if (message.error) promise.reject(message.error)
- else promise.resolve(message.data as Response)
this.promiseMap.delete(message.id)
}
}
}
private checkAndEmitBusy (): void {
- if (this.opts.enableEvents && this.busy) {
+ if (this.opts.enableEvents === true && this.busy === true) {
this.emitter?.emit('busy')
}
}
* @param step Number of running tasks step.
*/
private stepWorkerRunningTasks (worker: Worker, step: number): void {
- const tasksUsage = this.workersTasksUsage.get(worker)
- if (tasksUsage !== undefined) {
+ if (this.checkWorkerTasksUsage(worker) === true) {
+ const tasksUsage = this.workersTasksUsage.get(worker) as TasksUsage
tasksUsage.running = tasksUsage.running + step
this.workersTasksUsage.set(worker, tasksUsage)
- } else {
- throw new Error(WORKER_NOT_FOUND_TASKS_USAGE_MAP)
}
}
* @param step Number of run tasks step.
*/
private stepWorkerRunTasks (worker: Worker, step: number): void {
- const tasksUsage = this.workersTasksUsage.get(worker)
- if (tasksUsage !== undefined) {
+ if (this.checkWorkerTasksUsage(worker) === true) {
+ const tasksUsage = this.workersTasksUsage.get(worker) as TasksUsage
tasksUsage.run = tasksUsage.run + step
this.workersTasksUsage.set(worker, tasksUsage)
- } else {
- throw new Error(WORKER_NOT_FOUND_TASKS_USAGE_MAP)
}
}
/**
- * Updates tasks run time for the given worker.
+ * Updates tasks runtime for the given worker.
*
* @param worker Worker which run the task.
- * @param taskRunTime Worker task run time.
+ * @param taskRunTime Worker task runtime.
*/
private updateWorkerTasksRunTime (
worker: Worker,
): void {
if (
this.workerChoiceStrategyContext.getWorkerChoiceStrategy()
- .requiredStatistics.runTime === true
+ .requiredStatistics.runTime === true &&
+ this.checkWorkerTasksUsage(worker) === true
) {
- const tasksUsage = this.workersTasksUsage.get(worker)
- if (tasksUsage !== undefined && tasksUsage.run !== 0) {
- tasksUsage.runTime += taskRunTime ?? 0
+ const tasksUsage = this.workersTasksUsage.get(worker) as TasksUsage
+ tasksUsage.runTime += taskRunTime ?? 0
+ if (tasksUsage.run !== 0) {
tasksUsage.avgRunTime = tasksUsage.runTime / tasksUsage.run
- this.workersTasksUsage.set(worker, tasksUsage)
- } else {
- throw new Error(WORKER_NOT_FOUND_TASKS_USAGE_MAP)
}
+ this.workersTasksUsage.set(worker, tasksUsage)
}
}
+ /**
+ * Checks if the given worker is registered in the workers tasks usage map.
+ *
+ * @param worker Worker to check.
+ * @returns `true` if the worker is registered in the workers tasks usage map. `false` otherwise.
+ */
+ private checkWorkerTasksUsage (worker: Worker): boolean {
+ const hasTasksUsage = this.workersTasksUsage.has(worker)
+ if (hasTasksUsage === false) {
+ throw new Error('Worker could not be found in workers tasks usage map')
+ }
+ return hasTasksUsage
+ }
+
+ /**
+ * Initializes tasks usage statistics.
+ *
+ * @param worker The worker.
+ */
+ private initWorkerTasksUsage (worker: Worker): void {
+ this.workersTasksUsage.set(worker, {
+ run: 0,
+ running: 0,
+ runTime: 0,
+ avgRunTime: 0
+ })
+ }
+
/**
* Removes worker tasks usage statistics.
*
private removeWorkerTasksUsage (worker: Worker): void {
this.workersTasksUsage.delete(worker)
}
+
+ /**
+ * Resets worker tasks usage statistics.
+ *
+ * @param worker The worker.
+ */
+ private resetWorkerTasksUsage (worker: Worker): void {
+ this.removeWorkerTasksUsage(worker)
+ this.initWorkerTasksUsage(worker)
+ }
}
repositories / poolifier.git / blobdiff