fix: ensure worker choice is retried at least the pool max size

[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 42952fa2c3d08534ea08595080cfa2860693e6b6..fea72350ffafbb50b44f9a56935f17038952ef91 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
@@ -1,14 +1,11 @@
 import type { IWorker } from '../worker'
 import type { IPool } from '../pool'
-import {
-  DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
-  DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
-} from '../../utils'
+import { DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS } from '../../utils'
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
 import type {
   IWorkerChoiceStrategy,
-  TaskStatisticsRequirements,
-  WorkerChoiceStrategyOptions
+  InternalWorkerChoiceStrategyOptions,
+  TaskStatisticsRequirements
 } from './selection-strategies-types'
 
 /**
@@ -42,14 +39,14 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
    */
   private readonly defaultWorkerWeight: number
   /**
-   * Worker virtual task runtime.
+   * Worker node virtual task runtime.
    */
-  private workerVirtualTaskRunTime: number = 0
+  private workerNodeVirtualTaskRunTime: number = 0
 
   /** @inheritDoc */
   public constructor (
     pool: IPool<Worker, Data, Response>,
-    opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+    opts: InternalWorkerChoiceStrategyOptions
   ) {
     super(pool, opts)
     this.setTaskStatisticsRequirements(this.opts)
@@ -59,7 +56,7 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
   /** @inheritDoc */
   public reset (): boolean {
     this.resetWorkerNodeKeyProperties()
-    this.workerVirtualTaskRunTime = 0
+    this.workerNodeVirtualTaskRunTime = 0
     return true
   }
 
@@ -71,18 +68,27 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
   /** @inheritDoc */
   public choose (): number | undefined {
     this.setPreviousWorkerNodeKey(this.nextWorkerNodeKey)
-    return this.weightedRoundRobinNextWorkerNodeKey()
+    this.weightedRoundRobinNextWorkerNodeKey()
+    this.checkNextWorkerNodeReadiness()
+    return this.nextWorkerNodeKey
   }
 
   /** @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.workerNodeVirtualTaskRunTime = 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
   }
@@ -92,10 +98,10 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
       this.opts.weights?.[
         this.nextWorkerNodeKey ?? this.previousWorkerNodeKey
       ] ?? this.defaultWorkerWeight
-    if (this.workerVirtualTaskRunTime < workerWeight) {
-      this.workerVirtualTaskRunTime =
-        this.workerVirtualTaskRunTime +
-        this.getWorkerTaskRunTime(
+    if (this.workerNodeVirtualTaskRunTime < workerWeight) {
+      this.workerNodeVirtualTaskRunTime =
+        this.workerNodeVirtualTaskRunTime +
+        this.getWorkerNodeTaskRunTime(
           this.nextWorkerNodeKey ?? this.previousWorkerNodeKey
         )
     } else {
@@ -103,7 +109,7 @@ export class WeightedRoundRobinWorkerChoiceStrategy<
         this.nextWorkerNodeKey === this.pool.workerNodes.length - 1
           ? 0
           : (this.nextWorkerNodeKey ?? this.previousWorkerNodeKey) + 1
-      this.workerVirtualTaskRunTime = 0
+      this.workerNodeVirtualTaskRunTime = 0
     }
     return this.nextWorkerNodeKey
   }