-import { cpus } from 'node:os'
import {
DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
- DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
-} from '../../utils'
-import type { IPool } from '../pool'
-import type { IWorker } from '../worker'
+ buildWorkerChoiceStrategyOptions
+} from '../../utils.js'
+import type { IPool } from '../pool.js'
+import type { IWorker } from '../worker.js'
import type {
IWorkerChoiceStrategy,
MeasurementStatisticsRequirements,
StrategyPolicy,
TaskStatisticsRequirements,
WorkerChoiceStrategyOptions
-} from './selection-strategies-types'
+} from './selection-strategies-types.js'
/**
* Worker choice strategy abstract base class.
/**
* The next worker node key.
*/
- protected nextWorkerNodeKey: number = 0
+ protected nextWorkerNodeKey: number | undefined = 0
+
+ /**
+ * The previous worker node key.
+ */
+ protected previousWorkerNodeKey: number = 0
/** @inheritDoc */
public readonly strategyPolicy: StrategyPolicy = {
- useDynamicWorker: false
+ dynamicWorkerUsage: false,
+ dynamicWorkerReady: true
}
/** @inheritDoc */
*/
public constructor (
protected readonly pool: IPool<Worker, Data, Response>,
- protected opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ protected opts?: WorkerChoiceStrategyOptions
) {
+ this.setOptions(this.opts)
this.choose = this.choose.bind(this)
}
protected setTaskStatisticsRequirements (
- opts: WorkerChoiceStrategyOptions
+ opts: WorkerChoiceStrategyOptions | undefined
): void {
this.toggleMedianMeasurementStatisticsRequirements(
this.taskStatisticsRequirements.runTime,
- opts.runTime?.median as boolean
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ opts!.runTime!.median
)
this.toggleMedianMeasurementStatisticsRequirements(
this.taskStatisticsRequirements.waitTime,
- opts.waitTime?.median as boolean
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ opts!.waitTime!.median
)
this.toggleMedianMeasurementStatisticsRequirements(
this.taskStatisticsRequirements.elu,
- opts.elu?.median as boolean
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ opts!.elu!.median
)
}
}
}
+ protected resetWorkerNodeKeyProperties (): void {
+ this.nextWorkerNodeKey = 0
+ this.previousWorkerNodeKey = 0
+ }
+
/** @inheritDoc */
public abstract reset (): boolean
public abstract update (workerNodeKey: number): boolean
/** @inheritDoc */
- public abstract choose (): number
+ public abstract choose (): number | undefined
/** @inheritDoc */
public abstract remove (workerNodeKey: number): boolean
/** @inheritDoc */
- public setOptions (opts: WorkerChoiceStrategyOptions): void {
- this.opts = opts ?? DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ public setOptions (opts: WorkerChoiceStrategyOptions | undefined): void {
+ this.opts = buildWorkerChoiceStrategyOptions<Worker, Data, Response>(
+ this.pool,
+ opts
+ )
this.setTaskStatisticsRequirements(this.opts)
}
+ /** @inheritDoc */
+ public hasPoolWorkerNodesReady (): boolean {
+ return this.pool.workerNodes.some(workerNode => workerNode.info.ready)
+ }
+
/**
* Whether the worker node is ready or not.
*
* @returns Whether the worker node is ready or not.
*/
protected isWorkerNodeReady (workerNodeKey: number): boolean {
- return this.pool.workerNodes[workerNodeKey].info.ready
+ return this.pool.workerNodes[workerNodeKey]?.info?.ready ?? false
}
/**
- * Whether the worker node has back pressure or not (i.e. its tasks queue is full).
- *
- * @param workerNodeKey - The worker node key.
- * @returns `true` if the worker node has back pressure, `false` otherwise.
+ * Check the next worker node readiness.
*/
- protected hasWorkerNodeBackPressure (workerNodeKey: number): boolean {
- return this.pool.hasWorkerNodeBackPressure(workerNodeKey)
+ protected checkNextWorkerNodeReadiness (): void {
+ // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+ if (!this.isWorkerNodeReady(this.nextWorkerNodeKey!)) {
+ delete this.nextWorkerNodeKey
+ }
}
/**
- * Gets the worker task runtime.
+ * Gets the worker node task runtime.
* If the task statistics require the average runtime, the average runtime is returned.
* If the task statistics require the median runtime , the median runtime is returned.
*
* @param workerNodeKey - The worker node key.
- * @returns The worker task runtime.
+ * @returns The worker node task runtime.
*/
- protected getWorkerTaskRunTime (workerNodeKey: number): number {
+ protected getWorkerNodeTaskRunTime (workerNodeKey: number): number {
return this.taskStatisticsRequirements.runTime.median
- ? this.pool.workerNodes[workerNodeKey].usage.runTime?.median ?? 0
- : this.pool.workerNodes[workerNodeKey].usage.runTime?.average ?? 0
+ ? this.pool.workerNodes[workerNodeKey].usage.runTime.median ?? 0
+ : this.pool.workerNodes[workerNodeKey].usage.runTime.average ?? 0
}
/**
- * Gets the worker task wait time.
+ * Gets the worker node task wait time.
* If the task statistics require the average wait time, the average wait time is returned.
* If the task statistics require the median wait time, the median wait time is returned.
*
* @param workerNodeKey - The worker node key.
- * @returns The worker task wait time.
+ * @returns The worker node task wait time.
*/
- protected getWorkerTaskWaitTime (workerNodeKey: number): number {
+ protected getWorkerNodeTaskWaitTime (workerNodeKey: number): number {
return this.taskStatisticsRequirements.waitTime.median
- ? this.pool.workerNodes[workerNodeKey].usage.waitTime?.median ?? 0
- : this.pool.workerNodes[workerNodeKey].usage.waitTime?.average ?? 0
+ ? this.pool.workerNodes[workerNodeKey].usage.waitTime.median ?? 0
+ : this.pool.workerNodes[workerNodeKey].usage.waitTime.average ?? 0
}
/**
- * Gets the worker task ELU.
+ * Gets the worker node task ELU.
* If the task statistics require the average ELU, the average ELU is returned.
* If the task statistics require the median ELU, the median ELU is returned.
*
* @param workerNodeKey - The worker node key.
- * @returns The worker task ELU.
+ * @returns The worker node task ELU.
*/
- protected getWorkerTaskElu (workerNodeKey: number): number {
+ protected getWorkerNodeTaskElu (workerNodeKey: number): number {
return this.taskStatisticsRequirements.elu.median
- ? this.pool.workerNodes[workerNodeKey].usage.elu.active?.median ?? 0
- : this.pool.workerNodes[workerNodeKey].usage.elu.active?.average ?? 0
+ ? this.pool.workerNodes[workerNodeKey].usage.elu.active.median ?? 0
+ : this.pool.workerNodes[workerNodeKey].usage.elu.active.average ?? 0
}
- protected 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)
+ /**
+ * Sets safely the previous worker node key.
+ *
+ * @param workerNodeKey - The worker node key.
+ */
+ protected setPreviousWorkerNodeKey (workerNodeKey: number | undefined): void {
+ this.previousWorkerNodeKey = workerNodeKey ?? this.previousWorkerNodeKey
}
}
repositories / poolifier.git / blobdiff