1 import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
} from
'../../utils'
2 import type { IPool
} from
'../pool'
3 import type { IWorker
} from
'../worker'
4 import { AbstractWorkerChoiceStrategy
} from
'./abstract-worker-choice-strategy'
7 TaskStatisticsRequirements
,
8 WorkerChoiceStrategyOptions
9 } from
'./selection-strategies-types'
12 * Selects the worker with the least ELU.
14 * @typeParam Worker - Type of worker which manages the strategy.
15 * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
16 * @typeParam Response - Type of execution response. This can only be serializable data.
18 export class LeastEluWorkerChoiceStrategy
<
19 Worker
extends IWorker
,
23 extends AbstractWorkerChoiceStrategy
<Worker
, Data
, Response
>
24 implements IWorkerChoiceStrategy
{
26 public readonly taskStatisticsRequirements
: TaskStatisticsRequirements
= {
38 pool
: IPool
<Worker
, Data
, Response
>,
39 opts
: WorkerChoiceStrategyOptions
= DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
42 this.setTaskStatistics(this.opts
)
46 public reset (): boolean {
51 public update (): boolean {
56 public choose (): number {
57 let minWorkerElu
= Infinity
58 let leastEluWorkerNodeKey
!: number
59 for (const [workerNodeKey
, workerNode
] of this.pool
.workerNodes
.entries()) {
60 const workerUsage
= workerNode
.workerUsage
61 const workerElu
= workerUsage
.elu
?.utilization
?? 0
62 if (workerElu
=== 0) {
64 } else if (workerElu
< minWorkerElu
) {
65 minWorkerElu
= workerElu
66 leastEluWorkerNodeKey
= workerNodeKey
69 return leastEluWorkerNodeKey
73 public remove (): boolean {