/**
* Worker virtual task timestamp.
*/
-type WorkerVirtualTaskTimestamp = {
+interface WorkerVirtualTaskTimestamp {
start: number
end: number
}
* Selects the next worker with a fair share scheduling algorithm.
* Loosely modeled after the fair queueing algorithm: https://en.wikipedia.org/wiki/Fair_queuing.
*
- * @template Worker Type of worker which manages the strategy.
- * @template Data Type of data sent to the worker. This can only be serializable data.
- * @template Response Type of response of execution. This can only be serializable data.
+ * @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.
*/
export class FairShareWorkerChoiceStrategy<
Worker extends IPoolWorker,
Data,
Response
> extends AbstractWorkerChoiceStrategy<Worker, Data, Response> {
- /** @inheritDoc */
+ /** {@inheritDoc} */
public readonly requiredStatistics: RequiredStatistics = {
runTime: true
}
* Worker last virtual task execution timestamp.
*/
private readonly workerLastVirtualTaskTimestamp: Map<
- Worker,
- WorkerVirtualTaskTimestamp
+ Worker,
+ WorkerVirtualTaskTimestamp
> = new Map<Worker, WorkerVirtualTaskTimestamp>()
- /** @inheritDoc */
+ /** {@inheritDoc} */
public reset (): boolean {
this.workerLastVirtualTaskTimestamp.clear()
return true
}
- /** @inheritDoc */
+ /** {@inheritDoc} */
public choose (): Worker {
let minWorkerVirtualTaskEndTimestamp = Infinity
let chosenWorker!: Worker
- for (const worker of this.pool.workers) {
+ for (const workerItem of this.pool.workers) {
+ const worker = workerItem.worker
this.computeWorkerLastVirtualTaskTimestamp(worker)
const workerLastVirtualTaskEndTimestamp =
this.workerLastVirtualTaskTimestamp.get(worker)?.end ?? 0
/**
* Computes worker last virtual task timestamp.
*
- * @param worker The worker.
+ * @param worker - The worker.
*/
private computeWorkerLastVirtualTaskTimestamp (worker: Worker): void {
const workerVirtualTaskStartTimestamp = Math.max(
Date.now(),
this.workerLastVirtualTaskTimestamp.get(worker)?.end ?? -Infinity
)
- const workerVirtualTaskEndTimestamp =
- workerVirtualTaskStartTimestamp +
- (this.pool.getWorkerAverageTasksRunTime(worker) ?? 0)
this.workerLastVirtualTaskTimestamp.set(worker, {
start: workerVirtualTaskStartTimestamp,
- end: workerVirtualTaskEndTimestamp
+ end:
+ workerVirtualTaskStartTimestamp +
+ (this.pool.getWorkerTasksUsage(worker)?.avgRunTime ?? 0)
})
}
}