-import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
+import {
+ DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+ DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+} from '../../utils'
import type { IPool } from '../pool'
import type { IWorker } from '../worker'
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
* Selects the worker with the least ELU.
*
* @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 execution response. 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 LeastEluWorkerChoiceStrategy<
Worker extends IWorker,
implements IWorkerChoiceStrategy {
/** @inheritDoc */
public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
- runTime: {
- aggregate: false,
- average: false,
- median: false
- },
- waitTime: {
- aggregate: false,
- average: false,
- median: false
- },
+ runTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+ waitTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
elu: {
aggregate: true,
average: false,
/** @inheritDoc */
public choose (): number {
+ return this.leastEluNextWorkerNodeKey()
+ }
+
+ /** @inheritDoc */
+ public remove (): boolean {
+ return true
+ }
+
+ private leastEluNextWorkerNodeKey (): number {
let minWorkerElu = Infinity
for (const [workerNodeKey, workerNode] of this.pool.workerNodes.entries()) {
- const workerUsage = workerNode.workerUsage
- const workerElu = workerUsage.elu?.active.aggregate ?? 0
- if (workerElu === 0) {
- this.nextWorkerNodeId = workerNodeKey
+ const workerUsage = workerNode.usage
+ const workerElu = workerUsage.elu?.active?.aggregate ?? 0
+ if (this.isWorkerNodeReady(workerNodeKey) && workerElu === 0) {
+ this.nextWorkerNodeKey = workerNodeKey
break
- } else if (workerElu < minWorkerElu) {
+ } else if (
+ this.isWorkerNodeReady(workerNodeKey) &&
+ workerElu < minWorkerElu
+ ) {
minWorkerElu = workerElu
- this.nextWorkerNodeId = workerNodeKey
+ this.nextWorkerNodeKey = workerNodeKey
}
}
- return this.nextWorkerNodeId
- }
-
- /** @inheritDoc */
- public remove (): boolean {
- return true
+ return this.nextWorkerNodeKey
}
}