-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,
+ WorkerChoiceStrategyOptions
+} from './selection-strategies-types'
/**
* Selects the less used worker.
*
* @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 Response - Type of execution response. This can only be serializable data.
*/
export class LessUsedWorkerChoiceStrategy<
- Worker extends IPoolWorker,
- Data,
- Response
-> extends AbstractWorkerChoiceStrategy<Worker, Data, Response> {
- /** {@inheritDoc} */
+ Worker extends IWorker,
+ Data = unknown,
+ Response = unknown
+ >
+ extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
+ implements IWorkerChoiceStrategy {
+ /** @inheritDoc */
+ public constructor (
+ pool: IPool<Worker, Data, Response>,
+ opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ ) {
+ super(pool, opts)
+ this.checkOptions(this.opts)
+ }
+
+ /** @inheritDoc */
public reset (): boolean {
return true
}
- /** {@inheritDoc} */
- public choose (): Worker {
+ /** @inheritDoc */
+ public update (): boolean {
+ return true
+ }
+
+ /** @inheritDoc */
+ public choose (): number {
+ const freeWorkerNodeKey = this.findFreeWorkerNodeKey()
+ if (freeWorkerNodeKey !== -1) {
+ return freeWorkerNodeKey
+ }
let minNumberOfTasks = Infinity
- let lessUsedWorker!: Worker
- for (const value of this.pool.workers.values()) {
- const worker = value.worker
- const tasksUsage = this.pool.getWorkerTasksUsage(worker)
- const workerTasks =
- (tasksUsage?.run as number) + (tasksUsage?.running as number)
- if (!this.isDynamicPool && workerTasks === 0) {
- return worker
+ let lessUsedWorkerNodeKey!: number
+ for (const [workerNodeKey, workerNode] of this.pool.workerNodes.entries()) {
+ const tasksUsage = workerNode.tasksUsage
+ const workerTasks = tasksUsage.run + tasksUsage.running
+ if (workerTasks === 0) {
+ return workerNodeKey
} else if (workerTasks < minNumberOfTasks) {
minNumberOfTasks = workerTasks
- lessUsedWorker = worker
+ lessUsedWorkerNodeKey = workerNodeKey
}
}
- return lessUsedWorker
+ return lessUsedWorkerNodeKey
+ }
+
+ /** @inheritDoc */
+ public remove (): boolean {
+ return true
}
}