-import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
+import {
+ DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+ DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+} from '../../utils'
import type { IPool } from '../pool'
import type { IWorker } from '../worker'
import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
* Loosely modeled after the fair queueing algorithm: https://en.wikipedia.org/wiki/Fair_queuing.
*
* @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 execution response. This can only be serializable data.
+ * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data.
+ * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
*/
export class FairShareWorkerChoiceStrategy<
Worker extends IWorker,
average: true,
median: false
},
- waitTime: {
- aggregate: false,
- average: false,
- median: false
- },
+ waitTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
elu: {
aggregate: true,
average: true,
/** @inheritDoc */
public update (workerNodeKey: number): boolean {
this.computeWorkerVirtualTaskEndTimestamp(workerNodeKey)
- let minWorkerVirtualTaskEndTimestamp = Infinity
- for (const [workerNodeKey] of this.pool.workerNodes.entries()) {
- if (this.workersVirtualTaskEndTimestamp[workerNodeKey] == null) {
- this.computeWorkerVirtualTaskEndTimestamp(workerNodeKey)
- }
- const workerVirtualTaskEndTimestamp =
- this.workersVirtualTaskEndTimestamp[workerNodeKey]
- if (workerVirtualTaskEndTimestamp < minWorkerVirtualTaskEndTimestamp) {
- minWorkerVirtualTaskEndTimestamp = workerVirtualTaskEndTimestamp
- this.nextWorkerNodeId = workerNodeKey
- }
- }
return true
}
/** @inheritDoc */
public choose (): number {
- return this.nextWorkerNodeId
+ return this.fairShareNextWorkerNodeKey()
}
/** @inheritDoc */
return true
}
+ private fairShareNextWorkerNodeKey (): number {
+ let minWorkerVirtualTaskEndTimestamp = Infinity
+ for (const [workerNodeKey] of this.pool.workerNodes.entries()) {
+ if (this.workersVirtualTaskEndTimestamp[workerNodeKey] == null) {
+ this.computeWorkerVirtualTaskEndTimestamp(workerNodeKey)
+ }
+ const workerVirtualTaskEndTimestamp =
+ this.workersVirtualTaskEndTimestamp[workerNodeKey]
+ if (
+ this.isWorkerNodeReady(workerNodeKey) &&
+ workerVirtualTaskEndTimestamp < minWorkerVirtualTaskEndTimestamp
+ ) {
+ minWorkerVirtualTaskEndTimestamp = workerVirtualTaskEndTimestamp
+ this.nextWorkerNodeKey = workerNodeKey
+ }
+ }
+ return this.nextWorkerNodeKey
+ }
+
/**
* Computes the worker node key virtual task end timestamp.
*