X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fround-robin-worker-choice-strategy.ts;h=55fa8ad73d4c7b7713a490cf07265e3634803779;hb=962b9863b80f507c6ce307f9b65b69fe2feb6081;hp=e265172fad11beede47047155d360b38c5cff4a0;hpb=c923ce5670eeae4194aa996d44a1071e88cb21ad;p=poolifier.git diff --git a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts index e265172f..55fa8ad7 100644 --- a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts +++ b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts @@ -1,36 +1,78 @@ -import type { IPoolWorker } from '../pool-worker' +import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils' +import type { IPool } from '../pool' +import type { IWorker } from '../worker' import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy' +import type { + IWorkerChoiceStrategy, + StrategyPolicy, + WorkerChoiceStrategyOptions +} from './selection-strategies-types' /** * Selects the next worker in a round robin fashion. * * @typeParam Worker - Type of worker which manages the strategy. - * @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 Data - Type of data sent to the worker. This can only be structured-cloneable data. + * @typeParam Response - Type of execution response. This can only be structured-cloneable data. */ export class RoundRobinWorkerChoiceStrategy< - Worker extends IPoolWorker, - Data, - Response -> extends AbstractWorkerChoiceStrategy { - /** - * Id of the next worker. - */ - private nextWorkerId: number = 0 + Worker extends IWorker, + Data = unknown, + Response = unknown + > + extends AbstractWorkerChoiceStrategy + implements IWorkerChoiceStrategy { + /** @inheritDoc */ + public readonly strategyPolicy: StrategyPolicy = { + useDynamicWorker: true + } + + /** @inheritDoc */ + public constructor ( + pool: IPool, + opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS + ) { + super(pool, opts) + this.setTaskStatisticsRequirements(this.opts) + } - /** {@inheritDoc} */ + /** @inheritDoc */ public reset (): boolean { - this.nextWorkerId = 0 + this.nextWorkerNodeKey = 0 + return true + } + + /** @inheritDoc */ + public update (): boolean { return true } - /** {@inheritDoc} */ + /** @inheritDoc */ public choose (): number { - const chosenWorkerKey = this.nextWorkerId - this.nextWorkerId = - this.nextWorkerId === this.pool.workers.length - 1 + const chosenWorkerNodeKey = this.nextWorkerNodeKey + do { + this.roundRobinNextWorkerNodeKey() + } while (!this.isWorkerNodeEligible(this.nextWorkerNodeKey)) + return chosenWorkerNodeKey + } + + /** @inheritDoc */ + public remove (workerNodeKey: number): boolean { + if (this.nextWorkerNodeKey === workerNodeKey) { + if (this.pool.workerNodes.length === 0) { + this.nextWorkerNodeKey = 0 + } else if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) { + this.nextWorkerNodeKey = this.pool.workerNodes.length - 1 + } + } + return true + } + + private roundRobinNextWorkerNodeKey (): number { + this.nextWorkerNodeKey = + this.nextWorkerNodeKey === this.pool.workerNodes.length - 1 ? 0 - : this.nextWorkerId + 1 - return chosenWorkerKey + : this.nextWorkerNodeKey + 1 + return this.nextWorkerNodeKey } }