import { AsyncResource } from 'node:async_hooks'
import type { Worker } from 'node:cluster'
import type { MessagePort } from 'node:worker_threads'
-import {
- type MessageValue,
- type TaskFunctions,
- type WorkerAsyncFunction,
- type WorkerFunction,
- type WorkerSyncFunction
+import type {
+ MessageValue,
+ TaskFunctions,
+ WorkerAsyncFunction,
+ WorkerFunction,
+ WorkerSyncFunction
} from '../utility-types'
-import { EMPTY_FUNCTION } from '../utils'
+import { EMPTY_FUNCTION, isPlainObject } from '../utils'
import type { KillBehavior, WorkerOptions } from './worker-options'
import { KillBehaviors } from './worker-options'
*
* @param type - The type of async event.
* @param isMain - Whether this is the main worker or not.
- * @param taskFunctions - Task function(s) processed by the worker when the pool's `execution` function is invoked.
+ * @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 mainWorker - Reference to main worker.
* @param opts - Options for the worker.
*/
this.checkAlive.bind(this)()
}
- this.mainWorker?.on(
- 'message',
- (message: MessageValue<Data, MainWorker>) => {
- this.messageListener(message)
- }
- )
+ this.mainWorker?.on('message', this.messageListener.bind(this))
}
private checkWorkerOptions (opts: WorkerOptions): void {
this.opts.killBehavior = opts.killBehavior ?? DEFAULT_KILL_BEHAVIOR
this.opts.maxInactiveTime =
opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME
- this.opts.async = opts.async ?? false
+ delete this.opts.async
}
/**
* Checks if the `taskFunctions` parameter is passed to the constructor.
*
- * @param taskFunctions - The task function(s) that should be defined.
+ * @param taskFunctions - The task function(s) parameter that should be checked.
*/
private checkTaskFunctions (
taskFunctions:
if (taskFunctions == null) {
throw new Error('taskFunctions parameter is mandatory')
}
- if (
- typeof taskFunctions !== 'function' &&
- typeof taskFunctions !== 'object'
- ) {
- throw new Error('taskFunctions parameter is not a function or an object')
- }
- if (
- typeof taskFunctions === 'object' &&
- taskFunctions.constructor !== Object &&
- Object.prototype.toString.call(taskFunctions) !== '[object Object]'
- ) {
- throw new Error('taskFunctions parameter is not an object literal')
- }
this.taskFunctions = new Map<string, WorkerFunction<Data, Response>>()
- if (typeof taskFunctions !== 'function') {
+ if (typeof taskFunctions === 'function') {
+ this.taskFunctions.set(DEFAULT_FUNCTION_NAME, taskFunctions.bind(this))
+ } else if (isPlainObject(taskFunctions)) {
+ let firstEntry = true
for (const [name, fn] of Object.entries(taskFunctions)) {
if (typeof fn !== 'function') {
- throw new Error(
+ throw new TypeError(
'A taskFunctions parameter object value is not a function'
)
}
this.taskFunctions.set(name, fn.bind(this))
+ if (firstEntry) {
+ this.taskFunctions.set(DEFAULT_FUNCTION_NAME, fn.bind(this))
+ firstEntry = false
+ }
+ }
+ if (firstEntry) {
+ throw new Error('taskFunctions parameter object is empty')
}
} else {
- this.taskFunctions.set(DEFAULT_FUNCTION_NAME, taskFunctions.bind(this))
+ throw new TypeError(
+ 'taskFunctions parameter is not a function or a plain object'
+ )
}
}
): void {
try {
const startTimestamp = performance.now()
+ const waitTime = startTimestamp - (message.submissionTimestamp ?? 0)
const res = fn(message.data)
const runTime = performance.now() - startTimestamp
this.sendToMainWorker({
data: res,
id: message.id,
- runTime
+ runTime,
+ waitTime
})
} catch (e) {
const err = this.handleError(e as Error)
message: MessageValue<Data>
): void {
const startTimestamp = performance.now()
+ const waitTime = startTimestamp - (message.submissionTimestamp ?? 0)
fn(message.data)
.then(res => {
const runTime = performance.now() - startTimestamp
this.sendToMainWorker({
data: res,
id: message.id,
- runTime
+ runTime,
+ waitTime
})
return null
})
.catch(EMPTY_FUNCTION)
}
+ /**
+ * Gets the task function in the given scope.
+ *
+ * @param name - Name of the function that will be returned.
+ */
private getTaskFunction (name?: string): WorkerFunction<Data, Response> {
name = name ?? DEFAULT_FUNCTION_NAME
const fn = this.taskFunctions.get(name)
if (fn == null) {
- throw new Error(`Task function "${name}" not found`)
+ throw new Error(`Task function '${name}' not found`)
}
return fn
}