Data = unknown,
Response = unknown
> extends AsyncResource {
- /**
- * The maximum time to keep this worker alive while idle. The pool automatically checks and terminates this worker when the time expires.
- */
- protected readonly maxInactiveTime: number
- /**
- * The kill behavior set as option on the Worker constructor or a default value.
- */
- protected readonly killBehavior: KillBehavior
- /**
- * Whether the worker is working asynchronously or not.
- */
- protected readonly async: boolean
/**
* Timestamp of the last task processed by this worker.
*/
- protected lastTask: number
+ protected lastTaskTimestamp: number
/**
- * Handler ID of the `interval` alive check.
+ * Handler Id of the `aliveInterval` worker alive check.
*/
- protected readonly interval?: NodeJS.Timeout
+ protected readonly aliveInterval?: NodeJS.Timeout
/**
* Constructs a new poolifier worker.
fn: (data: Data) => Response,
protected mainWorker?: MainWorker | null,
public readonly opts: WorkerOptions = {
+ /**
+ * The kill behavior option on this Worker or its default value.
+ */
killBehavior: DEFAULT_KILL_BEHAVIOR,
+ /**
+ * The maximum time to keep this worker alive while idle.
+ * The pool automatically checks and terminates this worker when the time expires.
+ */
maxInactiveTime: DEFAULT_MAX_INACTIVE_TIME
}
) {
super(type)
- this.killBehavior = this.opts.killBehavior ?? DEFAULT_KILL_BEHAVIOR
- this.maxInactiveTime =
- this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME
- this.async = !!this.opts.async
- this.lastTask = Date.now()
this.checkFunctionInput(fn)
+ this.checkWorkerOptions(this.opts)
+ this.lastTaskTimestamp = Date.now()
// Keep the worker active
if (!isMain) {
- this.interval = setInterval(
+ this.aliveInterval = setInterval(
this.checkAlive.bind(this),
- this.maxInactiveTime / 2
+ (this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME) / 2
)
this.checkAlive.bind(this)()
}
this.mainWorker?.on('message', (value: MessageValue<Data, MainWorker>) => {
if (value?.data && value.id) {
// Here you will receive messages
- if (this.async) {
+ if (this.opts.async) {
this.runInAsyncScope(this.runAsync.bind(this), this, fn, value)
} else {
this.runInAsyncScope(this.run.bind(this), this, fn, value)
this.mainWorker = value.parent
} else if (value.kill) {
// Here is time to kill this worker, just clearing the interval
- if (this.interval) clearInterval(this.interval)
+ if (this.aliveInterval) clearInterval(this.aliveInterval)
this.emitDestroy()
}
})
}
+ private checkWorkerOptions (opts: WorkerOptions) {
+ this.opts.killBehavior = opts.killBehavior ?? DEFAULT_KILL_BEHAVIOR
+ this.opts.maxInactiveTime =
+ opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME
+ /**
+ * Whether the worker is working asynchronously or not.
+ */
+ this.opts.async = !!opts.async
+ }
+
/**
* Check if the `fn` parameter is passed to the constructor.
*
* Check to see if the worker should be terminated, because its living too long.
*/
protected checkAlive (): void {
- if (Date.now() - this.lastTask > this.maxInactiveTime) {
- this.sendToMainWorker({ kill: this.killBehavior })
+ if (
+ Date.now() - this.lastTaskTimestamp >
+ (this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME)
+ ) {
+ this.sendToMainWorker({ kill: this.opts.killBehavior })
}
}
const err = this.handleError(e)
this.sendToMainWorker({ error: err, id: value.id })
} finally {
- this.lastTask = Date.now()
+ this.lastTaskTimestamp = Date.now()
}
}
this.sendToMainWorker({ error: err, id: value.id })
})
.finally(() => {
- this.lastTask = Date.now()
+ this.lastTaskTimestamp = Date.now()
})
.catch(EMPTY_FUNCTION)
}
)
})
- it('Verify worker default values', () => {
+ it('Verify worker options default values', () => {
const worker = new ThreadWorker(() => {})
- expect(worker.maxInactiveTime).toBe(1000 * 60)
- expect(worker.killBehavior).toBe(KillBehaviors.SOFT)
- expect(worker.async).toBe(false)
+ expect(worker.opts.maxInactiveTime).toBe(1000 * 60)
+ expect(worker.opts.killBehavior).toBe(KillBehaviors.SOFT)
+ expect(worker.opts.async).toBe(false)
})
it('Verify that worker options are set at worker creation', () => {
async: true,
killBehavior: KillBehaviors.HARD
})
- expect(worker.maxInactiveTime).toBe(6000)
- expect(worker.killBehavior).toBe(KillBehaviors.HARD)
- expect(worker.async).toBe(true)
+ expect(worker.opts.maxInactiveTime).toBe(6000)
+ expect(worker.opts.killBehavior).toBe(KillBehaviors.HARD)
+ expect(worker.opts.async).toBe(true)
})
it('Verify that handleError function is working properly', () => {