X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fabstract-worker-choice-strategy.ts;h=f244374291da55b9173129b6384b00f49d952e65;hb=0e8587d2e6bc29e14158c01948c625df9b11d381;hp=b0a624da9d5afb7b563d2a069e2b04866b02163a;hpb=8b4d450024ef06de939fa82f9746b005696914c0;p=poolifier.git

diff --git a/src/pools/selection-strategies/abstract-worker-choice-strategy.ts b/src/pools/selection-strategies/abstract-worker-choice-strategy.ts
index b0a624da..f2443742 100644
--- a/src/pools/selection-strategies/abstract-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/abstract-worker-choice-strategy.ts
@@ -1,49 +1,200 @@
-import type { IPoolInternal } from '../pool-internal'
-import { PoolType } from '../pool-internal'
-import type { IPoolWorker } from '../pool-worker'
+import {
+  DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+  buildWorkerChoiceStrategyOptions
+} from '../../utils.js'
+import type { IPool } from '../pool.js'
+import type { IWorker } from '../worker.js'
 import type {
   IWorkerChoiceStrategy,
-  RequiredStatistics
-} from './selection-strategies-types'
+  MeasurementStatisticsRequirements,
+  StrategyPolicy,
+  TaskStatisticsRequirements,
+  WorkerChoiceStrategyOptions
+} from './selection-strategies-types.js'
 
 /**
  * Worker choice strategy abstract base class.
  *
  * @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 response of execution. 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 abstract class AbstractWorkerChoiceStrategy<
-  Worker extends IPoolWorker,
+  Worker extends IWorker,
   Data = unknown,
   Response = unknown
 > implements IWorkerChoiceStrategy {
+  /**
+   * The next worker node key.
+   */
+  protected nextWorkerNodeKey: number | undefined = 0
+
+  /**
+   * The previous worker node key.
+   */
+  protected previousWorkerNodeKey = 0
+
   /** @inheritDoc */
-  protected readonly isDynamicPool: boolean
+  public readonly strategyPolicy: StrategyPolicy = {
+    dynamicWorkerUsage: false,
+    dynamicWorkerReady: true
+  }
+
   /** @inheritDoc */
-  public requiredStatistics: RequiredStatistics = {
-    runTime: false,
-    avgRunTime: false
+  public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
+    runTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+    waitTime: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS,
+    elu: DEFAULT_MEASUREMENT_STATISTICS_REQUIREMENTS
   }
 
   /**
    * Constructs a worker choice strategy bound to the pool.
    *
    * @param pool - The pool instance.
+   * @param opts - The worker choice strategy options.
    */
   public constructor (
-    protected readonly pool: IPoolInternal<Worker, Data, Response>
+    protected readonly pool: IPool<Worker, Data, Response>,
+    protected opts?: WorkerChoiceStrategyOptions
   ) {
-    this.isDynamicPool = this.pool.type === PoolType.DYNAMIC
-    this.choose.bind(this)
+    this.choose = this.choose.bind(this)
+    this.setOptions(this.opts)
+  }
+
+  protected setTaskStatisticsRequirements (
+    opts: WorkerChoiceStrategyOptions | undefined
+  ): void {
+    this.toggleMedianMeasurementStatisticsRequirements(
+      this.taskStatisticsRequirements.runTime,
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      opts!.runTime!.median
+    )
+    this.toggleMedianMeasurementStatisticsRequirements(
+      this.taskStatisticsRequirements.waitTime,
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      opts!.waitTime!.median
+    )
+    this.toggleMedianMeasurementStatisticsRequirements(
+      this.taskStatisticsRequirements.elu,
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      opts!.elu!.median
+    )
+  }
+
+  private toggleMedianMeasurementStatisticsRequirements (
+    measurementStatisticsRequirements: MeasurementStatisticsRequirements,
+    toggleMedian: boolean
+  ): void {
+    if (measurementStatisticsRequirements.average && toggleMedian) {
+      measurementStatisticsRequirements.average = false
+      measurementStatisticsRequirements.median = toggleMedian
+    }
+    if (measurementStatisticsRequirements.median && !toggleMedian) {
+      measurementStatisticsRequirements.average = true
+      measurementStatisticsRequirements.median = toggleMedian
+    }
+  }
+
+  protected resetWorkerNodeKeyProperties (): void {
+    this.nextWorkerNodeKey = 0
+    this.previousWorkerNodeKey = 0
   }
 
   /** @inheritDoc */
   public abstract reset (): boolean
 
   /** @inheritDoc */
-  public abstract choose (): number
+  public abstract update (workerNodeKey: number): boolean
+
+  /** @inheritDoc */
+  public abstract choose (): number | undefined
+
+  /** @inheritDoc */
+  public abstract remove (workerNodeKey: number): boolean
 
   /** @inheritDoc */
-  public abstract remove (workerKey: number): boolean
+  public setOptions (opts: WorkerChoiceStrategyOptions | undefined): void {
+    this.opts = buildWorkerChoiceStrategyOptions<Worker, Data, Response>(
+      this.pool,
+      opts
+    )
+    this.setTaskStatisticsRequirements(this.opts)
+  }
+
+  /**
+   * Whether the worker node is ready or not.
+   *
+   * @param workerNodeKey - The worker node key.
+   * @returns Whether the worker node is ready or not.
+   */
+  protected isWorkerNodeReady (workerNodeKey: number): boolean {
+    return this.pool.workerNodes[workerNodeKey]?.info?.ready ?? false
+  }
+
+  /**
+   * Check the next worker node key.
+   */
+  protected checkNextWorkerNodeKey (): void {
+    if (
+      this.nextWorkerNodeKey != null &&
+      (this.nextWorkerNodeKey < 0 ||
+        !this.isWorkerNodeReady(this.nextWorkerNodeKey))
+    ) {
+      delete this.nextWorkerNodeKey
+    }
+  }
+
+  /**
+   * Gets the worker node task runtime.
+   * If the task statistics require the average runtime, the average runtime is returned.
+   * If the task statistics require the median runtime , the median runtime is returned.
+   *
+   * @param workerNodeKey - The worker node key.
+   * @returns The worker node task runtime.
+   */
+  protected getWorkerNodeTaskRunTime (workerNodeKey: number): number {
+    return this.taskStatisticsRequirements.runTime.median
+      ? this.pool.workerNodes[workerNodeKey].usage.runTime.median ?? 0
+      : this.pool.workerNodes[workerNodeKey].usage.runTime.average ?? 0
+  }
+
+  /**
+   * Gets the worker node task wait time.
+   * If the task statistics require the average wait time, the average wait time is returned.
+   * If the task statistics require the median wait time, the median wait time is returned.
+   *
+   * @param workerNodeKey - The worker node key.
+   * @returns The worker node task wait time.
+   */
+  protected getWorkerNodeTaskWaitTime (workerNodeKey: number): number {
+    return this.taskStatisticsRequirements.waitTime.median
+      ? this.pool.workerNodes[workerNodeKey].usage.waitTime.median ?? 0
+      : this.pool.workerNodes[workerNodeKey].usage.waitTime.average ?? 0
+  }
+
+  /**
+   * Gets the worker node task ELU.
+   * If the task statistics require the average ELU, the average ELU is returned.
+   * If the task statistics require the median ELU, the median ELU is returned.
+   *
+   * @param workerNodeKey - The worker node key.
+   * @returns The worker node task ELU.
+   */
+  protected getWorkerNodeTaskElu (workerNodeKey: number): number {
+    return this.taskStatisticsRequirements.elu.median
+      ? this.pool.workerNodes[workerNodeKey].usage.elu.active.median ?? 0
+      : this.pool.workerNodes[workerNodeKey].usage.elu.active.average ?? 0
+  }
+
+  /**
+   * Sets safely the previous worker node key.
+   *
+   * @param workerNodeKey - The worker node key.
+   */
+  protected setPreviousWorkerNodeKey (workerNodeKey: number | undefined): void {
+    this.previousWorkerNodeKey =
+      workerNodeKey != null && workerNodeKey >= 0
+        ? workerNodeKey
+        : this.previousWorkerNodeKey
+  }
 }