Commit | Line | Data |
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c32882b0 | 1 | import { DynamicThreadPool, PoolOptions } from 'poolifier'; |
a4624c96 | 2 | |
a4624c96 | 3 | import Utils from '../utils/Utils'; |
c32882b0 | 4 | import { Worker } from 'worker_threads'; |
fd1fdf1b | 5 | import WorkerAbstract from './WorkerAbstract'; |
a4624c96 | 6 | import { WorkerData } from '../types/Worker'; |
7874b0b1 | 7 | import { WorkerUtils } from './WorkerUtils'; |
a4624c96 | 8 | |
fd1fdf1b | 9 | export default class WorkerDynamicPool<T> extends WorkerAbstract { |
a4624c96 JB |
10 | private pool: DynamicPool; |
11 | ||
12 | /** | |
13 | * Create a new `WorkerDynamicPool`. | |
14 | * | |
15 | * @param {string} workerScript | |
e71cccf3 JB |
16 | * @param {number} min |
17 | * @param {number} max | |
322c9192 | 18 | * @param {number} workerStartDelay |
9efbac5b | 19 | * @param {PoolOptions} opts |
a4624c96 | 20 | */ |
9efbac5b | 21 | constructor(workerScript: string, min: number, max: number, workerStartDelay?: number, opts?: PoolOptions<Worker>) { |
322c9192 | 22 | super(workerScript, workerStartDelay); |
9efbac5b | 23 | this.pool = DynamicPool.getInstance(min, max, this.workerScript, opts); |
a4624c96 JB |
24 | } |
25 | ||
26 | get size(): number { | |
27 | return this.pool.workers.length; | |
28 | } | |
29 | ||
6e0964c8 | 30 | get maxElementsPerWorker(): number | null { |
85f78bc0 | 31 | return null; |
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32 | } |
33 | ||
34 | /** | |
35 | * | |
3340259a | 36 | * @returns {Promise<void>} |
a4624c96 JB |
37 | * @public |
38 | */ | |
39 | // eslint-disable-next-line @typescript-eslint/no-empty-function | |
40 | public async start(): Promise<void> { } | |
41 | ||
ded13d97 JB |
42 | /** |
43 | * | |
3340259a | 44 | * @returns {Promise<void>} |
ded13d97 JB |
45 | * @public |
46 | */ | |
fd1fdf1b | 47 | // eslint-disable-next-line @typescript-eslint/require-await |
ded13d97 JB |
48 | public async stop(): Promise<void> { |
49 | return this.pool.destroy(); | |
50 | } | |
51 | ||
a4624c96 JB |
52 | /** |
53 | * | |
6e0964c8 | 54 | * @param {T} elementData |
3340259a | 55 | * @returns {Promise<void>} |
a4624c96 JB |
56 | * @public |
57 | */ | |
8434025b | 58 | public async addElement(elementData: T): Promise<void> { |
a4624c96 JB |
59 | await this.pool.execute(elementData); |
60 | // Start worker sequentially to optimize memory at startup | |
322c9192 | 61 | await Utils.sleep(this.workerStartDelay); |
a4624c96 JB |
62 | } |
63 | } | |
64 | ||
65 | class DynamicPool extends DynamicThreadPool<WorkerData> { | |
66 | private static instance: DynamicPool; | |
67 | ||
63b19acd JB |
68 | private constructor(min: number, max: number, workerScript: string, opts?: PoolOptions<Worker>) { |
69 | super(min, max, workerScript, opts); | |
a4624c96 JB |
70 | } |
71 | ||
9efbac5b | 72 | public static getInstance(min: number, max: number, workerScript: string, opts?: PoolOptions<Worker>): DynamicPool { |
a4624c96 | 73 | if (!DynamicPool.instance) { |
7874b0b1 | 74 | opts.exitHandler = opts?.exitHandler ?? WorkerUtils.defaultExitHandler; |
9efbac5b | 75 | DynamicPool.instance = new DynamicPool(min, max, workerScript, opts); |
a4624c96 JB |
76 | } |
77 | return DynamicPool.instance; | |
78 | } | |
79 | } |