refactor: factor out measurement statistics requirements default

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

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 f171ab5f50b1a90d7ed48550f96dbb4d42b5e015..7e9d581421319919e865c809df85d06f3c6e305c 100644 (file)
--- a/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/least-busy-worker-choice-strategy.ts
@@ -1,4 +1,7 @@
-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'
@@ -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,
@@ -24,13 +27,17 @@ export class LeastBusyWorkerChoiceStrategy<
   implements IWorkerChoiceStrategy {
   /** @inheritDoc */
   public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
-    runTime: true,
-    avgRunTime: false,
-    medRunTime: false,
-    waitTime: false,
-    avgWaitTime: false,
-    medWaitTime: false,
-    elu: false
+    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 */
@@ -54,18 +61,20 @@ export class LeastBusyWorkerChoiceStrategy<
 
   /** @inheritDoc */
   public choose (): number {
-    let minRunTime = Infinity
-    let leastBusyWorkerNodeKey!: number
+    let minTime = Infinity
     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
+      const workerTime =
+        workerNode.workerUsage.runTime.aggregate +
+        workerNode.workerUsage.waitTime.aggregate
+      if (workerTime === 0) {
+        this.nextWorkerNodeId = workerNodeKey
+        break
+      } else if (workerTime < minTime) {
+        minTime = workerTime
+        this.nextWorkerNodeId = workerNodeKey
       }
     }
-    return leastBusyWorkerNodeKey
+    return this.nextWorkerNodeId
   }
 
   /** @inheritDoc */