/**
* 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 */
protected readonly pool: IPool<Worker, Data, Response>,
protected opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
) {
+ this.opts = { ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, ...opts }
this.choose = this.choose.bind(this)
}
}
}
+ 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
+ this.opts = { ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, ...opts }
this.setTaskStatisticsRequirements(this.opts)
}
* @param workerNodeKey - The worker node key.
* @returns Whether the worker node is ready or not.
*/
- protected isWorkerNodeReady (workerNodeKey: number): boolean {
+ private isWorkerNodeReady (workerNodeKey: number): boolean {
return this.pool.workerNodes[workerNodeKey].info.ready
}
* @param workerNodeKey - The worker node key.
* @returns `true` if the worker node has back pressure, `false` otherwise.
*/
- protected hasWorkerNodeBackPressure (workerNodeKey: number): boolean {
+ private hasWorkerNodeBackPressure (workerNodeKey: number): boolean {
return this.pool.hasWorkerNodeBackPressure(workerNodeKey)
}
+ /**
+ * Whether the worker node is eligible or not.
+ * A worker node is eligible if it is ready and does not have back pressure.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @returns `true` if the worker node is eligible, `false` otherwise.
+ * @see {@link isWorkerNodeReady}
+ * @see {@link hasWorkerNodeBackPressure}
+ */
+ protected isWorkerNodeEligible (workerNodeKey: number): boolean {
+ return (
+ this.isWorkerNodeReady(workerNodeKey) &&
+ !this.hasWorkerNodeBackPressure(workerNodeKey)
+ )
+ }
+
/**
* Gets the worker task runtime.
* If the task statistics require the average runtime, the average runtime is returned.
: this.pool.workerNodes[workerNodeKey].usage.elu.active?.average ?? 0
}
+ /**
+ * Assign to nextWorkerNodeKey property the chosen worker node key.
+ *
+ * @param chosenWorkerNodeKey - The chosen worker node key.
+ */
+ protected assignChosenWorkerNodeKey (
+ chosenWorkerNodeKey: number | undefined
+ ): void {
+ if (chosenWorkerNodeKey != null) {
+ this.nextWorkerNodeKey = chosenWorkerNodeKey
+ } else {
+ this.nextWorkerNodeKey = undefined
+ }
+ }
+
+ protected checkNextWorkerNodeEligibility (
+ chosenWorkerNodeKey: number | undefined
+ ): void {
+ if (!this.isWorkerNodeEligible(this.nextWorkerNodeKey as number)) {
+ this.nextWorkerNodeKey = undefined
+ this.previousWorkerNodeKey =
+ chosenWorkerNodeKey ?? this.previousWorkerNodeKey
+ }
+ }
+
protected computeDefaultWorkerWeight (): number {
let cpusCycleTimeWeight = 0
for (const cpu of cpus()) {