-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 { IPool } from '../pool.js'
+import { DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS } from '../utils.js'
+import type { IWorker } from '../worker.js'
+import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy.js'
import type {
IWorkerChoiceStrategy,
- StrategyPolicy,
+ TaskStatisticsRequirements,
WorkerChoiceStrategyOptions
-} from './selection-strategies-types'
+} from './selection-strategies-types.js'
/**
* Selects the next worker with an interleaved weighted round robin scheduling algorithm.
extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
implements IWorkerChoiceStrategy {
/** @inheritDoc */
- public readonly strategyPolicy: StrategyPolicy = {
- dynamicWorkerUsage: false,
- dynamicWorkerReady: true
+ public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
+ runTime: {
+ aggregate: true,
+ average: true,
+ median: false
+ },
+ waitTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+ elu: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS
}
/**
* Round id.
- * This is used to determine the current round weight.
*/
- private roundId: number = 0
+ private roundId = 0
/**
* Round weights.
*/
private roundWeights: number[]
/**
- * Default worker weight.
+ * Worker node id.
*/
- private readonly defaultWorkerWeight: number
+ private workerNodeId = 0
+ /**
+ * Worker node virtual task runtime.
+ */
+ private workerNodeVirtualTaskRunTime = 0
/** @inheritDoc */
public constructor (
pool: IPool<Worker, Data, Response>,
- opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ opts?: WorkerChoiceStrategyOptions
) {
super(pool, opts)
this.setTaskStatisticsRequirements(this.opts)
- this.defaultWorkerWeight = this.computeDefaultWorkerWeight()
this.roundWeights = this.getRoundWeights()
}
/** @inheritDoc */
public reset (): boolean {
- this.nextWorkerNodeKey = 0
+ this.resetWorkerNodeKeyProperties()
this.roundId = 0
+ this.workerNodeId = 0
+ this.workerNodeVirtualTaskRunTime = 0
return true
}
/** @inheritDoc */
public choose (): number | undefined {
- let roundId: number | undefined
- let workerNodeId: number | undefined
for (
let roundIndex = this.roundId;
roundIndex < this.roundWeights.length;
roundIndex++
) {
+ this.roundId = roundIndex
for (
- let workerNodeKey = this.nextWorkerNodeKey ?? 0;
+ let workerNodeKey = this.workerNodeId;
workerNodeKey < this.pool.workerNodes.length;
workerNodeKey++
) {
- const workerWeight =
- this.opts.weights?.[workerNodeKey] ?? this.defaultWorkerWeight
+ this.workerNodeId = workerNodeKey
if (
- this.isWorkerNodeEligible(workerNodeKey) &&
- workerWeight >= this.roundWeights[roundIndex]
+ this.workerNodeId !== this.nextWorkerNodeKey &&
+ this.workerNodeVirtualTaskRunTime !== 0
) {
- roundId = roundIndex
- workerNodeId = workerNodeKey
- break
+ this.workerNodeVirtualTaskRunTime = 0
+ }
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ const workerWeight = this.opts!.weights![workerNodeKey]
+ if (
+ this.isWorkerNodeReady(workerNodeKey) &&
+ workerWeight >= this.roundWeights[roundIndex] &&
+ this.workerNodeVirtualTaskRunTime < workerWeight
+ ) {
+ this.workerNodeVirtualTaskRunTime =
+ this.workerNodeVirtualTaskRunTime +
+ this.getWorkerNodeTaskRunTime(workerNodeKey)
+ this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey)
+ this.nextWorkerNodeKey = workerNodeKey
+ return this.nextWorkerNodeKey
}
}
}
- this.roundId = roundId as number
- this.nextWorkerNodeKey = workerNodeId
- const chosenWorkerNodeKey = this.nextWorkerNodeKey
- if (this.nextWorkerNodeKey === this.pool.workerNodes.length - 1) {
- this.nextWorkerNodeKey = 0
- this.roundId =
- this.roundId === this.roundWeights.length - 1 ? 0 : this.roundId + 1
+ this.interleavedWeightedRoundRobinNextWorkerNodeId()
+ }
+
+ private interleavedWeightedRoundRobinNextWorkerNodeId (): void {
+ if (this.pool.workerNodes.length === 0) {
+ this.workerNodeId = 0
+ } else if (
+ this.roundId === this.roundWeights.length - 1 &&
+ this.workerNodeId === this.pool.workerNodes.length - 1
+ ) {
+ this.roundId = 0
+ this.workerNodeId = 0
+ } else if (this.workerNodeId === this.pool.workerNodes.length - 1) {
+ this.roundId = this.roundId + 1
+ this.workerNodeId = 0
} else {
- this.nextWorkerNodeKey = (this.nextWorkerNodeKey ?? 0) + 1
+ this.workerNodeId = this.workerNodeId + 1
}
- 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
- this.roundId =
- this.roundId === this.roundWeights.length - 1 ? 0 : this.roundId + 1
- }
+ if (this.pool.workerNodes.length === 0) {
+ this.resetWorkerNodeKeyProperties()
+ this.workerNodeId = 0
+ this.workerNodeVirtualTaskRunTime = 0
+ return true
+ }
+ if (
+ this.workerNodeId === workerNodeKey &&
+ this.workerNodeId > this.pool.workerNodes.length - 1
+ ) {
+ this.workerNodeId = this.pool.workerNodes.length - 1
+ }
+ if (
+ this.previousWorkerNodeKey === workerNodeKey &&
+ this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+ ) {
+ this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
}
return true
}
/** @inheritDoc */
- public setOptions (opts: WorkerChoiceStrategyOptions): void {
+ public setOptions (opts: WorkerChoiceStrategyOptions | undefined): void {
super.setOptions(opts)
this.roundWeights = this.getRoundWeights()
}
private getRoundWeights (): number[] {
- if (this.opts.weights == null) {
- return [this.defaultWorkerWeight]
- }
return [
...new Set(
- Object.values(this.opts.weights)
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ Object.values(this.opts!.weights!)
.slice()
.sort((a, b) => a - b)
)
repositories / poolifier.git / blobdiff