refactor: cleanup worker code
[poolifier.git] / src / worker / cluster-worker.ts
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6677a3d3 1import cluster, { type Worker } from 'node:cluster'
b6b32453 2import type { MessageValue } from '../utility-types'
c97c7edb 3import { AbstractWorker } from './abstract-worker'
325f50bc 4import type { WorkerOptions } from './worker-options'
82ea6492 5import type { TaskFunction, TaskFunctions } from './task-functions'
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6
7/**
729c563d 8 * A cluster worker used by a poolifier `ClusterPool`.
325f50bc 9 *
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10 * When this worker is inactive for more than the given `maxInactiveTime`,
11 * it will send a termination request to its main worker.
12 *
13 * If you use a `DynamicClusterPool` the extra workers that were created will be terminated,
14 * but the minimum number of workers will be guaranteed.
15 *
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16 * @typeParam Data - Type of data this worker receives from pool's execution. This can only be structured-cloneable data.
17 * @typeParam Response - Type of response the worker sends back to the main worker. This can only be structured-cloneable data.
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18 * @author [Christopher Quadflieg](https://github.com/Shinigami92)
19 * @since 2.0.0
20 */
d3c8a1a8 21export class ClusterWorker<
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22 Data = unknown,
23 Response = unknown
6677a3d3 24> extends AbstractWorker<Worker, Data, Response> {
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25 /**
26 * Constructs a new poolifier cluster worker.
27 *
a86b6df1 28 * @param taskFunctions - Task function(s) processed by the worker when the pool's `execution` function is invoked.
38e795c1 29 * @param opts - Options for the worker.
729c563d 30 */
d4aeae5a 31 public constructor (
82ea6492 32 taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>,
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33 opts: WorkerOptions = {}
34 ) {
04212af7 35 super(cluster.isPrimary, cluster.worker as Worker, taskFunctions, opts)
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36 }
37
38 /** @inheritDoc */
39 protected handleReadyMessage (message: MessageValue<Data>): void {
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40 if (message.workerId === this.id && message.ready === false) {
41 try {
9d2d0da1 42 this.getMainWorker().on('message', this.messageListener.bind(this))
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43 this.sendToMainWorker({
44 ready: true,
895b5341 45 taskFunctionNames: this.listTaskFunctionNames()
a5d15204 46 })
f05ed93c 47 } catch {
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48 this.sendToMainWorker({
49 ready: false,
895b5341 50 taskFunctionNames: this.listTaskFunctionNames()
a5d15204 51 })
f05ed93c 52 }
85aeb3f3 53 }
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54 }
55
56 /** @inheritDoc */
57 protected get id (): number {
58 return this.getMainWorker().id
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59 }
60
afc003b2 61 /** @inheritDoc */
c97c7edb 62 protected sendToMainWorker (message: MessageValue<Response>): void {
895b5341 63 this.getMainWorker().send({ ...message, workerId: this.id })
325f50bc 64 }
325f50bc 65}