Merge branch 'master' of github.com:jerome-benoit/poolifier

[poolifier.git] / src / pools / selection-strategies / weighted-round-robin-worker-choice-strategy.ts

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 4921df6dd115899261bd05f6fa2f223f09605e91..b023bfb0cd258641354c81c465c20fa9a3b0b309 100644 (file)
--- a/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/weighted-round-robin-worker-choice-strategy.ts
@@ -7,7 +7,6 @@ import {
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
 import type {
   IWorkerChoiceStrategy,
-  StrategyPolicy,
   TaskStatisticsRequirements,
   WorkerChoiceStrategyOptions
 } from './selection-strategies-types'
@@ -27,11 +26,6 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
   >
   extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
   implements IWorkerChoiceStrategy {
-  /** @inheritDoc */
-  public readonly strategyPolicy: StrategyPolicy = {
-    useDynamicWorker: true
-  }
-
   /** @inheritDoc */
   public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
     runTime: {
@@ -64,7 +58,7 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public reset (): boolean {
-    this.nextWorkerNodeKey = 0
+    this.resetWorkerNodeKeyProperties()
     this.workerVirtualTaskRunTime = 0
     return true
   }
@@ -75,38 +69,47 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
   }
 
   /** @inheritDoc */
-  public choose (): number {
-    const chosenWorkerNodeKey = this.nextWorkerNodeKey
-    this.weightedRoundRobinNextWorkerNodeKey()
-    return chosenWorkerNodeKey
+  public choose (): number | undefined {
+    this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey)
+    return this.weightedRoundRobinNextWorkerNodeKey()
   }
 
   /** @inheritDoc */
   public remove (workerNodeKey: number): boolean {
+    if (this.pool.workerNodes.length === 0) {
+      this.reset()
+    }
     if (this.nextWorkerNodeKey === workerNodeKey) {
-      if (this.pool.workerNodes.length === 0) {
-        this.nextWorkerNodeKey = 0
-      } else if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) {
+      this.workerVirtualTaskRunTime = 0
+      if (this.nextWorkerNodeKey > this.pool.workerNodes.length - 1) {
         this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
       }
-      this.workerVirtualTaskRunTime = 0
+    }
+    if (
+      this.previousWorkerNodeKey === workerNodeKey &&
+      this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
     }
     return true
   }
 
-  private weightedRoundRobinNextWorkerNodeKey (): number {
-    const workerVirtualTaskRunTime = this.workerVirtualTaskRunTime
+  private weightedRoundRobinNextWorkerNodeKey (): number | undefined {
     const workerWeight =
-      this.opts.weights?.[this.nextWorkerNodeKey] ?? this.defaultWorkerWeight
-    if (workerVirtualTaskRunTime < workerWeight) {
+      this.opts.weights?.[
+        this.nextWorkerNodeKey ?? this.previousWorkerNodeKey
+      ] ?? this.defaultWorkerWeight
+    if (this.workerVirtualTaskRunTime < workerWeight) {
       this.workerVirtualTaskRunTime =
-        workerVirtualTaskRunTime +
-        this.getWorkerTaskRunTime(this.nextWorkerNodeKey)
+        this.workerVirtualTaskRunTime +
+        this.getWorkerTaskRunTime(
+          this.nextWorkerNodeKey ?? this.previousWorkerNodeKey
+        )
     } else {
       this.nextWorkerNodeKey =
         this.nextWorkerNodeKey === this.pool.workerNodes.length - 1
           ? 0
-          : this.nextWorkerNodeKey + 1
+          : (this.nextWorkerNodeKey ?? this.previousWorkerNodeKey) + 1
       this.workerVirtualTaskRunTime = 0
     }
     return this.nextWorkerNodeKey