-import { cpus } from 'node:os'
import type { IWorker } from '../worker'
import type { IPool } from '../pool'
import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
import type {
IWorkerChoiceStrategy,
+ StrategyPolicy,
WorkerChoiceStrategyOptions
} from './selection-strategies-types'
>
extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
implements IWorkerChoiceStrategy {
+ /** @inheritDoc */
+ public readonly strategyPolicy: StrategyPolicy = {
+ useDynamicWorker: true
+ }
+
/**
- * Worker node id where the current task will be submitted.
- */
- private currentWorkerNodeId: number = 0
- /**
- * Current round id.
+ * Round id.
* This is used to determine the current round weight.
*/
- private currentRoundId: number = 0
+ private roundId: number = 0
/**
* Round weights.
*/
opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
) {
super(pool, opts)
- this.setRequiredStatistics(this.opts)
+ this.setTaskStatisticsRequirements(this.opts)
this.defaultWorkerWeight = this.computeDefaultWorkerWeight()
this.roundWeights = this.getRoundWeights()
}
/** @inheritDoc */
public reset (): boolean {
- this.currentWorkerNodeId = 0
- this.currentRoundId = 0
+ this.nextWorkerNodeId = 0
+ this.roundId = 0
return true
}
let roundId: number | undefined
let workerNodeId: number | undefined
for (
- let roundIndex = this.currentRoundId;
+ let roundIndex = this.roundId;
roundIndex < this.roundWeights.length;
roundIndex++
) {
for (
- let workerNodeKey = this.currentWorkerNodeId;
+ let workerNodeKey = this.nextWorkerNodeId;
workerNodeKey < this.pool.workerNodes.length;
workerNodeKey++
) {
}
}
}
- this.currentRoundId = roundId ?? 0
- this.currentWorkerNodeId = workerNodeId ?? 0
- const chosenWorkerNodeKey = this.currentWorkerNodeId
- if (this.currentWorkerNodeId === this.pool.workerNodes.length - 1) {
- this.currentWorkerNodeId = 0
- this.currentRoundId =
- this.currentRoundId === this.roundWeights.length - 1
- ? 0
- : this.currentRoundId + 1
+ this.roundId = roundId ?? 0
+ this.nextWorkerNodeId = workerNodeId ?? 0
+ const chosenWorkerNodeKey = this.nextWorkerNodeId
+ if (this.nextWorkerNodeId === this.pool.workerNodes.length - 1) {
+ this.nextWorkerNodeId = 0
+ this.roundId =
+ this.roundId === this.roundWeights.length - 1 ? 0 : this.roundId + 1
} else {
- this.currentWorkerNodeId = this.currentWorkerNodeId + 1
+ this.nextWorkerNodeId = this.nextWorkerNodeId + 1
}
return chosenWorkerNodeKey
}
/** @inheritDoc */
public remove (workerNodeKey: number): boolean {
- if (this.currentWorkerNodeId === workerNodeKey) {
+ if (this.nextWorkerNodeId === workerNodeKey) {
if (this.pool.workerNodes.length === 0) {
- this.currentWorkerNodeId = 0
- } else if (this.currentWorkerNodeId > this.pool.workerNodes.length - 1) {
- this.currentWorkerNodeId = this.pool.workerNodes.length - 1
- this.currentRoundId =
- this.currentRoundId === this.roundWeights.length - 1
- ? 0
- : this.currentRoundId + 1
+ this.nextWorkerNodeId = 0
+ } else if (this.nextWorkerNodeId > this.pool.workerNodes.length - 1) {
+ this.nextWorkerNodeId = this.pool.workerNodes.length - 1
+ this.roundId =
+ this.roundId === this.roundWeights.length - 1 ? 0 : this.roundId + 1
}
}
return true
this.roundWeights = this.getRoundWeights()
}
- private computeDefaultWorkerWeight (): number {
- let cpusCycleTimeWeight = 0
- for (const cpu of cpus()) {
- // CPU estimated cycle time
- const numberOfDigits = cpu.speed.toString().length - 1
- const cpuCycleTime = 1 / (cpu.speed / Math.pow(10, numberOfDigits))
- cpusCycleTimeWeight += cpuCycleTime * Math.pow(10, numberOfDigits)
- }
- return Math.round(cpusCycleTimeWeight / cpus().length)
- }
-
private getRoundWeights (): number[] {
if (this.opts.weights == null) {
return [this.defaultWorkerWeight]