X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fleast-busy-worker-choice-strategy.ts;h=9a1550e06f60dfecc4339f56ac2c01ad3a7344cf;hb=3d76750ac8dacd95003ca89cf9542c3b2a014b8c;hp=de747089b8fc49d989ef232c442a6caf695a3e6d;hpb=1dfe8965df029a366c040227fb61ae47b3d59a3a;p=poolifier.git

diff --git a/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts b/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts
index de747089..9a1550e0 100644
--- a/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts
@@ -1,10 +1,13 @@
-import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
+import {
+  DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+  DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+} from '../../utils'
 import type { IPool } from '../pool'
 import type { IWorker } from '../worker'
 import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
 import type {
   IWorkerChoiceStrategy,
-  TaskStatistics,
+  TaskStatisticsRequirements,
   WorkerChoiceStrategyOptions
 } from './selection-strategies-types'
 
@@ -12,8 +15,8 @@ import type {
  * Selects the least busy worker.
  *
  * @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 execution response. This can only be serializable data.
+ * @typeParam Data - Type of data sent to the worker. This can only be structured-cloneable data.
+ * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
  */
 export class LeastBusyWorkerChoiceStrategy<
     Worker extends IWorker,
@@ -23,14 +26,18 @@ export class LeastBusyWorkerChoiceStrategy<
   extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
   implements IWorkerChoiceStrategy {
   /** @inheritDoc */
-  public readonly taskStatistics: TaskStatistics = {
-    runTime: true,
-    avgRunTime: false,
-    medRunTime: false,
-    waitTime: false,
-    avgWaitTime: false,
-    medWaitTime: false,
-    elu: false
+  public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
+    runTime: {
+      aggregate: true,
+      average: false,
+      median: false
+    },
+    waitTime: {
+      aggregate: true,
+      average: false,
+      median: false
+    },
+    elu: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS
   }
 
   /** @inheritDoc */
@@ -39,7 +46,7 @@ export class LeastBusyWorkerChoiceStrategy<
     opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
   ) {
     super(pool, opts)
-    this.setTaskStatistics(this.opts)
+    this.setTaskStatisticsRequirements(this.opts)
   }
 
   /** @inheritDoc */
@@ -54,22 +61,31 @@ export class LeastBusyWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public choose (): number {
-    let minRunTime = Infinity
-    let leastBusyWorkerNodeKey!: number
-    for (const [workerNodeKey, workerNode] of this.pool.workerNodes.entries()) {
-      const workerRunTime = workerNode.workerUsage.runTime.aggregation
-      if (workerRunTime === 0) {
-        return workerNodeKey
-      } else if (workerRunTime < minRunTime) {
-        minRunTime = workerRunTime
-        leastBusyWorkerNodeKey = workerNodeKey
-      }
-    }
-    return leastBusyWorkerNodeKey
+    return this.leastBusyNextWorkerNodeKey()
   }
 
   /** @inheritDoc */
   public remove (): boolean {
     return true
   }
+
+  private leastBusyNextWorkerNodeKey (): number {
+    let minTime = Infinity
+    for (const [workerNodeKey, workerNode] of this.pool.workerNodes.entries()) {
+      const workerTime =
+        (workerNode.usage.runTime?.aggregate ?? 0) +
+        (workerNode.usage.waitTime?.aggregate ?? 0)
+      if (this.isWorkerNodeReady(workerNodeKey) && workerTime === 0) {
+        this.nextWorkerNodeKey = workerNodeKey
+        break
+      } else if (
+        this.isWorkerNodeReady(workerNodeKey) &&
+        workerTime < minTime
+      ) {
+        minTime = workerTime
+        this.nextWorkerNodeKey = workerNodeKey
+      }
+    }
+    return this.nextWorkerNodeKey
+  }
 }