X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fworker-choice-strategy-context.ts;h=43bcb3adee19a9aaedf072e526f0b59235e55b40;hb=69f3db74b7903c684a5e95ef00c6ab1f6aa098f8;hp=bd616a54d666ffc3372d09e040686e3e9aa1aca2;hpb=5502c07c81463257e1dd3015ee5a828846ece0b2;p=poolifier.git diff --git a/src/pools/selection-strategies/worker-choice-strategy-context.ts b/src/pools/selection-strategies/worker-choice-strategy-context.ts index bd616a54..43bcb3ad 100644 --- a/src/pools/selection-strategies/worker-choice-strategy-context.ts +++ b/src/pools/selection-strategies/worker-choice-strategy-context.ts @@ -1,70 +1,112 @@ -import type { IPoolInternal } from '../pool-internal' -import { PoolType } from '../pool-internal' -import type { IPoolWorker } from '../pool-worker' -import { DynamicPoolWorkerChoiceStrategy } from './dynamic-pool-worker-choice-strategy' +import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils' +import type { IPool } from '../pool' +import type { IWorker } from '../worker' +import { FairShareWorkerChoiceStrategy } from './fair-share-worker-choice-strategy' +import { InterleavedWeightedRoundRobinWorkerChoiceStrategy } from './interleaved-weighted-round-robin-worker-choice-strategy' +import { LeastBusyWorkerChoiceStrategy } from './least-busy-worker-choice-strategy' +import { LeastUsedWorkerChoiceStrategy } from './least-used-worker-choice-strategy' +import { RoundRobinWorkerChoiceStrategy } from './round-robin-worker-choice-strategy' import type { IWorkerChoiceStrategy, RequiredStatistics, - WorkerChoiceStrategy + WorkerChoiceStrategy, + WorkerChoiceStrategyOptions } from './selection-strategies-types' import { WorkerChoiceStrategies } from './selection-strategies-types' -import { getWorkerChoiceStrategy } from './selection-strategies-utils' +import { WeightedRoundRobinWorkerChoiceStrategy } from './weighted-round-robin-worker-choice-strategy' /** * The worker choice strategy context. * * @typeParam Worker - Type of worker. * @typeParam Data - Type of data sent to the worker. This can only be serializable data. - * @typeParam Response - Type of response of execution. This can only be serializable data. + * @typeParam Response - Type of execution response. This can only be serializable data. */ export class WorkerChoiceStrategyContext< - Worker extends IPoolWorker, - Data, - Response + Worker extends IWorker, + Data = unknown, + Response = unknown > { - private workerChoiceStrategy!: IWorkerChoiceStrategy + private readonly workerChoiceStrategies: Map< + WorkerChoiceStrategy, + IWorkerChoiceStrategy + > /** * Worker choice strategy context constructor. * * @param pool - The pool instance. - * @param createWorkerCallback - The worker creation callback for dynamic pool. * @param workerChoiceStrategy - The worker choice strategy. + * @param opts - The worker choice strategy options. */ public constructor ( - private readonly pool: IPoolInternal, - private readonly createWorkerCallback: () => number, - workerChoiceStrategy: WorkerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN + pool: IPool, + private workerChoiceStrategy: WorkerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN, + opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS ) { - this.setWorkerChoiceStrategy(workerChoiceStrategy) + this.execute = this.execute.bind(this) + this.workerChoiceStrategies = new Map< + WorkerChoiceStrategy, + IWorkerChoiceStrategy + >([ + [ + WorkerChoiceStrategies.ROUND_ROBIN, + new (RoundRobinWorkerChoiceStrategy.bind(this))( + pool, + opts + ) + ], + [ + WorkerChoiceStrategies.LEAST_USED, + new (LeastUsedWorkerChoiceStrategy.bind(this))( + pool, + opts + ) + ], + [ + WorkerChoiceStrategies.LEAST_BUSY, + new (LeastBusyWorkerChoiceStrategy.bind(this))( + pool, + opts + ) + ], + [ + WorkerChoiceStrategies.FAIR_SHARE, + new (FairShareWorkerChoiceStrategy.bind(this))( + pool, + opts + ) + ], + [ + WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN, + new (WeightedRoundRobinWorkerChoiceStrategy.bind(this))< + Worker, + Data, + Response + >(pool, opts) + ], + [ + WorkerChoiceStrategies.INTERLEAVED_WEIGHTED_ROUND_ROBIN, + new (InterleavedWeightedRoundRobinWorkerChoiceStrategy.bind(this))< + Worker, + Data, + Response + >(pool, opts) + ] + ]) } /** - * Gets the worker choice strategy instance specific to the pool type. - * - * @param workerChoiceStrategy - The worker choice strategy. - * @returns The worker choice strategy instance for the pool type. - */ - private getPoolWorkerChoiceStrategy ( - workerChoiceStrategy: WorkerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN - ): IWorkerChoiceStrategy { - if (this.pool.type === PoolType.DYNAMIC) { - return new DynamicPoolWorkerChoiceStrategy( - this.pool, - this.createWorkerCallback, - workerChoiceStrategy - ) - } - return getWorkerChoiceStrategy(this.pool, workerChoiceStrategy) - } - - /** - * Gets the worker choice strategy required statistics. + * Gets the worker choice strategy in the context required statistics. * * @returns The required statistics. */ public getRequiredStatistics (): RequiredStatistics { - return this.workerChoiceStrategy.requiredStatistics + return ( + this.workerChoiceStrategies.get( + this.workerChoiceStrategy + ) as IWorkerChoiceStrategy + ).requiredStatistics } /** @@ -75,27 +117,65 @@ export class WorkerChoiceStrategyContext< public setWorkerChoiceStrategy ( workerChoiceStrategy: WorkerChoiceStrategy ): void { - this.workerChoiceStrategy?.reset() - this.workerChoiceStrategy = - this.getPoolWorkerChoiceStrategy(workerChoiceStrategy) + if (this.workerChoiceStrategy !== workerChoiceStrategy) { + this.workerChoiceStrategy = workerChoiceStrategy + } + this.workerChoiceStrategies.get(this.workerChoiceStrategy)?.reset() + } + + /** + * Updates the worker node key in the worker choice strategy internals in the context. + * + * @returns `true` if the update is successful, `false` otherwise. + */ + public update (workerNodeKey: number): boolean { + return ( + this.workerChoiceStrategies.get( + this.workerChoiceStrategy + ) as IWorkerChoiceStrategy + ).update(workerNodeKey) } /** - * Chooses a worker with the underlying selection strategy. + * Executes the worker choice strategy algorithm in the context. * - * @returns The key of the chosen one. + * @returns The key of the worker node. + * @throws {@link https://nodejs.org/api/errors.html#class-error} If the worker node key is null or undefined. */ public execute (): number { - return this.workerChoiceStrategy.choose() + const workerNodeKey = ( + this.workerChoiceStrategies.get( + this.workerChoiceStrategy + ) as IWorkerChoiceStrategy + ).choose() + if (workerNodeKey == null) { + throw new Error('Worker node key chosen is null or undefined') + } + return workerNodeKey } /** - * Removes a worker in the underlying selection strategy internals. + * Removes the worker node key from the worker choice strategy in the context. * - * @param workerKey - The key of the worker to remove. + * @param workerNodeKey - The key of the worker node. * @returns `true` if the removal is successful, `false` otherwise. */ - public remove (workerKey: number): boolean { - return this.workerChoiceStrategy.remove(workerKey) + public remove (workerNodeKey: number): boolean { + return ( + this.workerChoiceStrategies.get( + this.workerChoiceStrategy + ) as IWorkerChoiceStrategy + ).remove(workerNodeKey) + } + + /** + * Sets the worker choice strategies in the context options. + * + * @param opts - The worker choice strategy options. + */ + public setOptions (opts: WorkerChoiceStrategyOptions): void { + for (const workerChoiceStrategy of this.workerChoiceStrategies.values()) { + workerChoiceStrategy.setOptions(opts) + } } }