| 1 | import type { Worker } from 'cluster' |
| 2 | import { isMaster, worker } from 'cluster' |
| 3 | import type { JSONValue, MessageValue } from '../utility-types' |
| 4 | import { AbstractWorker } from './abstract-worker' |
| 5 | import type { WorkerOptions } from './worker-options' |
| 6 | |
| 7 | /** |
| 8 | * An example worker that will be always alive, you just need to **extend** this class if you want a static pool. |
| 9 | * |
| 10 | * When this worker is inactive for more than 1 minute, it will send this info to the main worker, |
| 11 | * if you are using DynamicClusterPool, the workers created after will be killed, the min num of worker will be guaranteed. |
| 12 | * |
| 13 | * @author [Christopher Quadflieg](https://github.com/Shinigami92) |
| 14 | * @since 2.0.0 |
| 15 | */ |
| 16 | export class ClusterWorker< |
| 17 | Data extends JSONValue = JSONValue, |
| 18 | Response extends JSONValue = JSONValue |
| 19 | > extends AbstractWorker<Worker, Data, Response> { |
| 20 | public constructor (fn: (data: Data) => Response, opts: WorkerOptions = {}) { |
| 21 | super('worker-cluster-pool:pioardi', isMaster, fn, opts) |
| 22 | |
| 23 | worker.on('message', (value: MessageValue<Data>) => { |
| 24 | if (value?.data && value.id) { |
| 25 | // here you will receive messages |
| 26 | // console.log('This is the main worker ' + isMaster) |
| 27 | if (this.async) { |
| 28 | this.runInAsyncScope(this.runAsync.bind(this), this, fn, value) |
| 29 | } else { |
| 30 | this.runInAsyncScope(this.run.bind(this), this, fn, value) |
| 31 | } |
| 32 | } else if (value.kill) { |
| 33 | // here is time to kill this worker, just clearing the interval |
| 34 | if (this.interval) clearInterval(this.interval) |
| 35 | this.emitDestroy() |
| 36 | } |
| 37 | }) |
| 38 | } |
| 39 | |
| 40 | protected getMainWorker (): Worker { |
| 41 | return worker |
| 42 | } |
| 43 | |
| 44 | protected sendToMainWorker (message: MessageValue<Response>): void { |
| 45 | this.getMainWorker().send(message) |
| 46 | } |
| 47 | |
| 48 | protected handleError (e: Error | string): string { |
| 49 | return e instanceof Error ? e.message : e |
| 50 | } |
| 51 | } |