-import type { IPoolWorker } from '../pool-worker'
+import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
+import type { IPool } from '../pool'
+import type { IWorker } from '../worker'
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
import type {
IWorkerChoiceStrategy,
- RequiredStatistics
+ RequiredStatistics,
+ WorkerChoiceStrategyOptions
} from './selection-strategies-types'
/**
*
* @typeParam Worker - Type of worker which manages the strategy.
* @typeParam Data - Type of data sent to the worker. This can only be serializable data.
- * @typeParam Response - Type of response of execution. This can only be serializable data.
+ * @typeParam Response - Type of execution response. This can only be serializable data.
*/
export class FairShareWorkerChoiceStrategy<
- Worker extends IPoolWorker,
+ Worker extends IWorker,
Data = unknown,
Response = unknown
>
extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
- implements IWorkerChoiceStrategy<Worker, Data, Response> {
- /** {@inheritDoc} */
+ implements IWorkerChoiceStrategy {
+ /** @inheritDoc */
public readonly requiredStatistics: RequiredStatistics = {
runTime: true,
- avgRunTime: true
+ avgRunTime: true,
+ medRunTime: false
}
/**
- * Worker last virtual task execution timestamp.
+ * Worker last virtual task execution timestamp.
*/
private readonly workerLastVirtualTaskTimestamp: Map<
number,
WorkerVirtualTaskTimestamp
> = new Map<number, WorkerVirtualTaskTimestamp>()
- /** {@inheritDoc} */
+ /** @inheritDoc */
+ public constructor (
+ pool: IPool<Worker, Data, Response>,
+ opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+ ) {
+ super(pool, opts)
+ this.checkOptions(this.opts)
+ }
+
+ /** @inheritDoc */
public reset (): boolean {
this.workerLastVirtualTaskTimestamp.clear()
return true
}
- /** {@inheritDoc} */
+ /** @inheritDoc */
public choose (): number {
let minWorkerVirtualTaskEndTimestamp = Infinity
- let chosenWorkerKey!: number
- for (const [index] of this.pool.workers.entries()) {
+ let chosenWorkerNodeKey!: number
+ for (const [index] of this.pool.workerNodes.entries()) {
this.computeWorkerLastVirtualTaskTimestamp(index)
const workerLastVirtualTaskEndTimestamp =
this.workerLastVirtualTaskTimestamp.get(index)?.end ?? 0
workerLastVirtualTaskEndTimestamp < minWorkerVirtualTaskEndTimestamp
) {
minWorkerVirtualTaskEndTimestamp = workerLastVirtualTaskEndTimestamp
- chosenWorkerKey = index
+ chosenWorkerNodeKey = index
}
}
- return chosenWorkerKey
+ return chosenWorkerNodeKey
}
- /** {@inheritDoc} */
- public remove (workerKey: number): boolean {
- const workerDeleted = this.workerLastVirtualTaskTimestamp.delete(workerKey)
+ /** @inheritDoc */
+ public remove (workerNodeKey: number): boolean {
+ const deleted = this.workerLastVirtualTaskTimestamp.delete(workerNodeKey)
for (const [key, value] of this.workerLastVirtualTaskTimestamp.entries()) {
- if (key > workerKey) {
+ if (key > workerNodeKey) {
this.workerLastVirtualTaskTimestamp.set(key - 1, value)
}
}
- return workerDeleted
+ return deleted
}
/**
* Computes worker last virtual task timestamp.
*
- * @param workerKey - The worker key.
+ * @param workerNodeKey - The worker node key.
*/
- private computeWorkerLastVirtualTaskTimestamp (workerKey: number): void {
+ private computeWorkerLastVirtualTaskTimestamp (workerNodeKey: number): void {
const workerVirtualTaskStartTimestamp = Math.max(
- Date.now(),
- this.workerLastVirtualTaskTimestamp.get(workerKey)?.end ?? -Infinity
+ performance.now(),
+ this.workerLastVirtualTaskTimestamp.get(workerNodeKey)?.end ?? -Infinity
)
- this.workerLastVirtualTaskTimestamp.set(workerKey, {
+ const workerVirtualTaskTRunTime = this.requiredStatistics.medRunTime
+ ? this.pool.workerNodes[workerNodeKey].tasksUsage.medRunTime
+ : this.pool.workerNodes[workerNodeKey].tasksUsage.avgRunTime
+ this.workerLastVirtualTaskTimestamp.set(workerNodeKey, {
start: workerVirtualTaskStartTimestamp,
- end:
- workerVirtualTaskStartTimestamp +
- (this.pool.workers[workerKey].tasksUsage.avgRunTime ?? 0)
+ end: workerVirtualTaskStartTimestamp + (workerVirtualTaskTRunTime ?? 0)
})
}
}