X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fweighted-round-robin-worker-choice-strategy.ts;h=24a25b4d30de7fa553f500615b5b5e8e06efd972;hb=5502c07c81463257e1dd3015ee5a828846ece0b2;hp=9bd5a07b3b5fa761ef4fd28993b4078568fef346;hpb=78cea37e264d5ca527bc42eb056f3b9579a2b2c4;p=poolifier.git

diff --git a/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
index 9bd5a07b..24a25b4d 100644
--- a/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
@@ -1,4 +1,4 @@
-import { cpus } from 'os'
+import { cpus } from 'node:os'
 import type { IPoolInternal } from '../pool-internal'
 import type { IPoolWorker } from '../pool-worker'
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
@@ -16,24 +16,24 @@ interface TaskRunTime {
  * Selects the next worker with a weighted round robin scheduling algorithm.
  * Loosely modeled after the weighted round robin queueing algorithm: https://en.wikipedia.org/wiki/Weighted_round_robin.
  *
- * @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 WeightedRoundRobinWorkerChoiceStrategy<
   Worker extends IPoolWorker,
   Data,
   Response
 > extends AbstractWorkerChoiceStrategy<Worker, Data, Response> {
-  /** @inheritDoc */
+  /** {@inheritDoc} */
   public readonly requiredStatistics: RequiredStatistics = {
     runTime: true
   }
 
   /**
-   * Worker index where the current task will be submitted.
+   * Worker id where the current task will be submitted.
    */
-  private currentWorkerIndex: number = 0
+  private currentWorkerId: number = 0
   /**
    * Default worker weight.
    */
@@ -41,15 +41,15 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
   /**
    * Per worker virtual task runtime map.
    */
-  private readonly workersTaskRunTime: Map<Worker, TaskRunTime> = new Map<
-  Worker,
+  private readonly workersTaskRunTime: Map<number, TaskRunTime> = new Map<
+  number,
   TaskRunTime
   >()
 
   /**
    * Constructs a worker choice strategy that selects with a weighted round robin scheduling algorithm.
    *
-   * @param pool The pool instance.
+   * @param pool - The pool instance.
    */
   public constructor (pool: IPoolInternal<Worker, Data, Response>) {
     super(pool)
@@ -57,69 +57,82 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
     this.initWorkersTaskRunTime()
   }
 
-  /** @inheritDoc */
+  /** {@inheritDoc} */
   public reset (): boolean {
-    this.currentWorkerIndex = 0
+    this.currentWorkerId = 0
     this.workersTaskRunTime.clear()
     this.initWorkersTaskRunTime()
     return true
   }
 
-  /** @inheritDoc */
-  public choose (): Worker {
-    const chosenWorker = this.pool.workers[this.currentWorkerIndex]
-    if (this.isDynamicPool && !this.workersTaskRunTime.has(chosenWorker)) {
-      this.initWorkerTaskRunTime(chosenWorker)
+  /** {@inheritDoc} */
+  public choose (): number {
+    const chosenWorkerKey = this.currentWorkerId
+    if (this.isDynamicPool && !this.workersTaskRunTime.has(chosenWorkerKey)) {
+      this.initWorkerTaskRunTime(chosenWorkerKey)
     }
     const workerTaskRunTime =
-      this.workersTaskRunTime.get(chosenWorker)?.runTime ?? 0
+      this.workersTaskRunTime.get(chosenWorkerKey)?.runTime ?? 0
     const workerTaskWeight =
-      this.workersTaskRunTime.get(chosenWorker)?.weight ??
+      this.workersTaskRunTime.get(chosenWorkerKey)?.weight ??
       this.defaultWorkerWeight
     if (workerTaskRunTime < workerTaskWeight) {
       this.setWorkerTaskRunTime(
-        chosenWorker,
+        chosenWorkerKey,
         workerTaskWeight,
         workerTaskRunTime +
-          (this.getWorkerVirtualTaskRunTime(chosenWorker) ?? 0)
+          (this.getWorkerVirtualTaskRunTime(chosenWorkerKey) ?? 0)
       )
     } else {
-      this.currentWorkerIndex =
-        this.currentWorkerIndex === this.pool.workers.length - 1
+      this.currentWorkerId =
+        this.currentWorkerId === this.pool.workers.length - 1
           ? 0
-          : this.currentWorkerIndex + 1
-      this.setWorkerTaskRunTime(
-        this.pool.workers[this.currentWorkerIndex],
-        workerTaskWeight,
-        0
-      )
+          : this.currentWorkerId + 1
+      this.setWorkerTaskRunTime(this.currentWorkerId, workerTaskWeight, 0)
+    }
+    return chosenWorkerKey
+  }
+
+  /** {@inheritDoc} */
+  public remove (workerKey: number): boolean {
+    if (this.currentWorkerId === workerKey) {
+      this.currentWorkerId =
+        this.currentWorkerId > this.pool.workers.length - 1
+          ? this.pool.workers.length - 1
+          : this.currentWorkerId
+    }
+    const workerDeleted = this.workersTaskRunTime.delete(workerKey)
+    for (const [key, value] of this.workersTaskRunTime) {
+      if (key > workerKey) {
+        this.workersTaskRunTime.set(key - 1, value)
+      }
     }
-    return chosenWorker
+    return workerDeleted
   }
 
   private initWorkersTaskRunTime (): void {
-    for (const worker of this.pool.workers) {
-      this.initWorkerTaskRunTime(worker)
+    for (const [index] of this.pool.workers.entries()) {
+      this.initWorkerTaskRunTime(index)
     }
   }
 
-  private initWorkerTaskRunTime (worker: Worker): void {
-    this.setWorkerTaskRunTime(worker, this.defaultWorkerWeight, 0)
+  private initWorkerTaskRunTime (workerKey: number): void {
+    this.setWorkerTaskRunTime(workerKey, this.defaultWorkerWeight, 0)
   }
 
   private setWorkerTaskRunTime (
-    worker: Worker,
+    workerKey: number,
     weight: number,
     runTime: number
   ): void {
-    this.workersTaskRunTime.set(worker, {
+    this.workersTaskRunTime.set(workerKey, {
       weight,
       runTime
     })
   }
 
-  private getWorkerVirtualTaskRunTime (worker: Worker): number | undefined {
-    return this.pool.getWorkerAverageTasksRunTime(worker)
+  private getWorkerVirtualTaskRunTime (workerKey: number): number {
+    return this.pool.workers[workerKey].tasksUsage.avgRunTime
   }
 
   private computeWorkerWeight (): number {