-import { AsyncResource } from 'node:async_hooks'
import type { Worker } from 'node:cluster'
import type { MessagePort } from 'node:worker_threads'
import { performance } from 'node:perf_hooks'
TaskFunctions,
TaskSyncFunction
} from './task-functions'
+import {
+ checkTaskFunctionName,
+ checkValidTaskFunctionEntry,
+ checkValidWorkerOptions
+} from './utils'
const DEFAULT_MAX_INACTIVE_TIME = 60000
const DEFAULT_WORKER_OPTIONS: WorkerOptions = {
MainWorker extends Worker | MessagePort,
Data = unknown,
Response = unknown
-> extends AsyncResource {
+> {
/**
* Worker id.
*/
* Handler id of the `activeInterval` worker activity check.
*/
protected activeInterval?: NodeJS.Timeout
+
/**
* Constructs a new poolifier worker.
*
- * @param type - The type of async event.
* @param isMain - Whether this is the main worker or not.
* @param mainWorker - Reference to main worker.
* @param taskFunctions - Task function(s) processed by the worker when the pool's `execution` function is invoked. The first function is the default function.
* @param opts - Options for the worker.
*/
public constructor (
- type: string,
protected readonly isMain: boolean,
private readonly mainWorker: MainWorker,
taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>,
protected opts: WorkerOptions = DEFAULT_WORKER_OPTIONS
) {
- super(type)
if (this.isMain == null) {
throw new Error('isMain parameter is mandatory')
}
this.checkTaskFunctions(taskFunctions)
this.checkWorkerOptions(this.opts)
if (!this.isMain) {
+ // Should be once() but Node.js on windows has a bug that prevents it from working
this.getMainWorker().on('message', this.handleReadyMessage.bind(this))
}
}
private checkWorkerOptions (opts: WorkerOptions): void {
- if (opts != null && !isPlainObject(opts)) {
- throw new TypeError('opts worker options parameter is not a plain object')
- }
- if (
- opts?.killBehavior != null &&
- !Object.values(KillBehaviors).includes(opts.killBehavior)
- ) {
- throw new TypeError(
- `killBehavior option '${opts.killBehavior}' is not valid`
- )
- }
- if (
- opts?.maxInactiveTime != null &&
- !Number.isSafeInteger(opts.maxInactiveTime)
- ) {
- throw new TypeError('maxInactiveTime option is not an integer')
- }
- if (opts?.maxInactiveTime != null && opts.maxInactiveTime < 5) {
- throw new TypeError(
- 'maxInactiveTime option is not a positive integer greater or equal than 5'
- )
- }
- if (opts?.killHandler != null && typeof opts.killHandler !== 'function') {
- throw new TypeError('killHandler option is not a function')
- }
- if (opts?.async != null) {
- throw new Error('async option is deprecated')
- }
+ checkValidWorkerOptions(opts)
this.opts = { ...DEFAULT_WORKER_OPTIONS, ...opts }
}
- private checkValidTaskFunctionEntry (
- name: string,
- fn: TaskFunction<Data, Response>
- ): void {
- if (typeof name !== 'string') {
- throw new TypeError(
- 'A taskFunctions parameter object key is not a string'
- )
- }
- if (typeof name === 'string' && name.trim().length === 0) {
- throw new TypeError(
- 'A taskFunctions parameter object key is an empty string'
- )
- }
- if (typeof fn !== 'function') {
- throw new TypeError(
- 'A taskFunctions parameter object value is not a function'
- )
- }
- }
-
/**
* Checks if the `taskFunctions` parameter is passed to the constructor and valid.
*
} else if (isPlainObject(taskFunctions)) {
let firstEntry = true
for (const [name, fn] of Object.entries(taskFunctions)) {
- this.checkValidTaskFunctionEntry(name, fn)
+ checkValidTaskFunctionEntry<Data, Response>(name, fn)
const boundFn = fn.bind(this)
if (firstEntry) {
this.taskFunctions.set(DEFAULT_TASK_NAME, boundFn)
*/
public hasTaskFunction (name: string): TaskFunctionOperationResult {
try {
- this.checkTaskFunctionName(name)
+ checkTaskFunctionName(name)
} catch (error) {
return { status: false, error: error as Error }
}
fn: TaskFunction<Data, Response>
): TaskFunctionOperationResult {
try {
- this.checkTaskFunctionName(name)
+ checkTaskFunctionName(name)
if (name === DEFAULT_TASK_NAME) {
throw new Error(
'Cannot add a task function with the default reserved name'
*/
public removeTaskFunction (name: string): TaskFunctionOperationResult {
try {
- this.checkTaskFunctionName(name)
+ checkTaskFunctionName(name)
if (name === DEFAULT_TASK_NAME) {
throw new Error(
'Cannot remove the task function with the default reserved name'
*/
public setDefaultTaskFunction (name: string): TaskFunctionOperationResult {
try {
- this.checkTaskFunctionName(name)
+ checkTaskFunctionName(name)
if (name === DEFAULT_TASK_NAME) {
throw new Error(
'Cannot set the default task function reserved name as the default task function'
}
}
- private checkTaskFunctionName (name: string): void {
- if (typeof name !== 'string') {
- throw new TypeError('name parameter is not a string')
- }
- if (typeof name === 'string' && name.trim().length === 0) {
- throw new TypeError('name parameter is an empty string')
- }
- }
-
/**
* Handles the ready message sent by the main worker.
*
*
* @param message - The kill message.
*/
- protected handleKillMessage (message: MessageValue<Data>): void {
+ protected handleKillMessage (_message: MessageValue<Data>): void {
this.stopCheckActive()
if (isAsyncFunction(this.opts.killHandler)) {
(this.opts.killHandler?.() as Promise<void>)
.then(() => {
this.sendToMainWorker({ kill: 'success' })
- return null
+ return undefined
})
.catch(() => {
this.sendToMainWorker({ kill: 'failure' })
})
- .finally(() => {
- this.emitDestroy()
- })
- .catch(EMPTY_FUNCTION)
} else {
try {
// eslint-disable-next-line @typescript-eslint/no-invalid-void-type
this.sendToMainWorker({ kill: 'success' })
} catch {
this.sendToMainWorker({ kill: 'failure' })
- } finally {
- this.emitDestroy()
}
}
}
private checkMessageWorkerId (message: MessageValue<Data>): void {
if (message.workerId == null) {
throw new Error('Message worker id is not set')
- } else if (message.workerId != null && message.workerId !== this.id) {
+ } else if (message.workerId !== this.id) {
throw new Error(
`Message worker id ${message.workerId} does not match the worker id ${this.id}`
)
* Runs the given task.
*
* @param task - The task to execute.
- * @throws {@link https://nodejs.org/api/errors.html#class-error} If the task function is not found.
*/
- protected run (task: Task<Data>): void {
+ protected readonly run = (task: Task<Data>): void => {
const { name, taskId, data } = task
- const fn = this.taskFunctions.get(name ?? DEFAULT_TASK_NAME)
- if (fn == null) {
+ const taskFunctionName = name ?? DEFAULT_TASK_NAME
+ if (!this.taskFunctions.has(taskFunctionName)) {
this.sendToMainWorker({
workerError: {
name: name as string,
})
return
}
+ const fn = this.taskFunctions.get(taskFunctionName)
if (isAsyncFunction(fn)) {
- this.runInAsyncScope(this.runAsync.bind(this), this, fn, task)
+ this.runAsync(fn as TaskAsyncFunction<Data, Response>, task)
} else {
- this.runInAsyncScope(this.runSync.bind(this), this, fn, task)
+ this.runSync(fn as TaskSyncFunction<Data, Response>, task)
}
}
* @param fn - Task function that will be executed.
* @param task - Input data for the task function.
*/
- protected runSync (
+ protected readonly runSync = (
fn: TaskSyncFunction<Data, Response>,
task: Task<Data>
- ): void {
+ ): void => {
const { name, taskId, data } = task
try {
let taskPerformance = this.beginTaskPerformance(name)
* @param fn - Task function that will be executed.
* @param task - Input data for the task function.
*/
- protected runAsync (
+ protected readonly runAsync = (
fn: TaskAsyncFunction<Data, Response>,
task: Task<Data>
- ): void {
+ ): void => {
const { name, taskId, data } = task
let taskPerformance = this.beginTaskPerformance(name)
fn(data)
repositories / poolifier.git / blobdiff