| 1 | import type { AbstractPoolWorker } from '../abstract-pool-worker' |
| 2 | import type { IPoolInternal } from '../pool-internal' |
| 3 | import { FairShareWorkerChoiceStrategy } from './fair-share-worker-choice-strategy' |
| 4 | import { LessRecentlyUsedWorkerChoiceStrategy } from './less-recently-used-worker-choice-strategy' |
| 5 | import { RoundRobinWorkerChoiceStrategy } from './round-robin-worker-choice-strategy' |
| 6 | import type { |
| 7 | IWorkerChoiceStrategy, |
| 8 | WorkerChoiceStrategy |
| 9 | } from './selection-strategies-types' |
| 10 | import { WorkerChoiceStrategies } from './selection-strategies-types' |
| 11 | import { WeightedRoundRobinWorkerChoiceStrategy } from './weighted-round-robin-worker-choice-strategy' |
| 12 | |
| 13 | /** |
| 14 | * Worker selection strategies helpers class. |
| 15 | */ |
| 16 | export class SelectionStrategiesUtils { |
| 17 | /** |
| 18 | * Get the worker choice strategy instance. |
| 19 | * |
| 20 | * @param pool The pool instance. |
| 21 | * @param workerChoiceStrategy The worker choice strategy. |
| 22 | * @returns The worker choice strategy instance. |
| 23 | */ |
| 24 | public static getWorkerChoiceStrategy< |
| 25 | Worker extends AbstractPoolWorker, |
| 26 | Data, |
| 27 | Response |
| 28 | > ( |
| 29 | pool: IPoolInternal<Worker, Data, Response>, |
| 30 | workerChoiceStrategy: WorkerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN |
| 31 | ): IWorkerChoiceStrategy<Worker> { |
| 32 | switch (workerChoiceStrategy) { |
| 33 | case WorkerChoiceStrategies.ROUND_ROBIN: |
| 34 | return new RoundRobinWorkerChoiceStrategy(pool) |
| 35 | case WorkerChoiceStrategies.LESS_RECENTLY_USED: |
| 36 | return new LessRecentlyUsedWorkerChoiceStrategy(pool) |
| 37 | case WorkerChoiceStrategies.FAIR_SHARE: |
| 38 | return new FairShareWorkerChoiceStrategy(pool) |
| 39 | case WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN: |
| 40 | return new WeightedRoundRobinWorkerChoiceStrategy(pool) |
| 41 | default: |
| 42 | throw new Error( |
| 43 | // eslint-disable-next-line @typescript-eslint/restrict-template-expressions |
| 44 | `Worker choice strategy '${workerChoiceStrategy}' not found` |
| 45 | ) |
| 46 | } |
| 47 | } |
| 48 | } |