perf: improve node eligibility branching on worker choice strategies

[poolifier.git] / src / pools / selection-strategies / least-used-worker-choice-strategy.ts

diff --git a/src/pools/selection-strategies/least-used-worker-choice-strategy.ts b/src/pools/selection-strategies/least-used-worker-choice-strategy.ts
index 1f7033214d6a4735c3064df290acc2ce48cb3e72..d0adbcd7b77c4ef095f25fced318148498f42935 100644 (file)
--- a/src/pools/selection-strategies/least-used-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/least-used-worker-choice-strategy.ts
@@ -4,7 +4,6 @@ import type { IWorker } from '../worker'
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
 import type {
   IWorkerChoiceStrategy,
-  StrategyPolicy,
   WorkerChoiceStrategyOptions
 } from './selection-strategies-types'
 
@@ -22,12 +21,6 @@ export class LeastUsedWorkerChoiceStrategy<
   >
   extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
   implements IWorkerChoiceStrategy {
-  /** @inheritDoc */
-  public readonly strategyPolicy: StrategyPolicy = {
-    dynamicWorkerUsage: false,
-    dynamicWorkerReady: true
-  }
-
   /** @inheritDoc */
   public constructor (
     pool: IPool<Worker, Data, Response>,
@@ -49,8 +42,7 @@ export class LeastUsedWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public choose (): number | undefined {
-    const chosenWorkerNodeKey = this.leastUsedNextWorkerNodeKey()
-    this.assignChosenWorkerNodeKey(chosenWorkerNodeKey)
+    this.nextWorkerNodeKey = this.leastUsedNextWorkerNodeKey()
     return this.nextWorkerNodeKey
   }
 
@@ -63,18 +55,18 @@ export class LeastUsedWorkerChoiceStrategy<
     let minNumberOfTasks = Infinity
     let chosenWorkerNodeKey: number | undefined
     for (const [workerNodeKey, workerNode] of this.pool.workerNodes.entries()) {
+      if (!this.isWorkerNodeEligible(workerNodeKey)) {
+        continue
+      }
       const workerTaskStatistics = workerNode.usage.tasks
       const workerTasks =
         workerTaskStatistics.executed +
         workerTaskStatistics.executing +
         workerTaskStatistics.queued
-      if (this.isWorkerNodeEligible(workerNodeKey) && workerTasks === 0) {
+      if (workerTasks === 0) {
         chosenWorkerNodeKey = workerNodeKey
         break
-      } else if (
-        this.isWorkerNodeEligible(workerNodeKey) &&
-        workerTasks < minNumberOfTasks
-      ) {
+      } else if (workerTasks < minNumberOfTasks) {
         minNumberOfTasks = workerTasks
         chosenWorkerNodeKey = workerNodeKey
       }