X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fpools%2Fselection-strategies%2Fworker-choice-strategy-context.ts;h=14e734fd6a50bd40647ebc9af012dc77d24654ac;hb=722d55a0b7bdb6b03cc523e5debef6b612c332f8;hp=122774dd0e48c157d5d7c7ce5bdc4ea590281087;hpb=aa9eede876376ffbb6d8585192f3865849252f5c;p=poolifier.git

diff --git a/src/pools/selection-strategies/worker-choice-strategy-context.ts b/src/pools/selection-strategies/worker-choice-strategy-context.ts
index 122774dd..14e734fd 100644
--- a/src/pools/selection-strategies/worker-choice-strategy-context.ts
+++ b/src/pools/selection-strategies/worker-choice-strategy-context.ts
@@ -44,8 +44,9 @@ export class WorkerChoiceStrategyContext<
   public constructor (
     pool: IPool<Worker, Data, Response>,
     private workerChoiceStrategy: WorkerChoiceStrategy = WorkerChoiceStrategies.ROUND_ROBIN,
-    opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
+    private opts: WorkerChoiceStrategyOptions = DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
   ) {
+    this.opts = { ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, ...opts }
     this.execute = this.execute.bind(this)
     this.workerChoiceStrategies = new Map<
     WorkerChoiceStrategy,
@@ -119,7 +120,7 @@ export class WorkerChoiceStrategyContext<
   }
 
   /**
-   * Gets the worker choice strategy task statistics requirements in the context.
+   * Gets the worker choice strategy in the context task statistics requirements.
    *
    * @returns The task statistics requirements.
    */
@@ -146,7 +147,7 @@ export class WorkerChoiceStrategyContext<
   }
 
   /**
-   * Updates the worker node key in the worker choice strategy internals in the context.
+   * Updates the worker node key in the worker choice strategy in the context internals.
    *
    * @returns `true` if the update is successful, `false` otherwise.
    */
@@ -159,19 +160,46 @@ export class WorkerChoiceStrategyContext<
   }
 
   /**
-   * Executes the worker choice strategy algorithm in the context.
+   * Executes the worker choice strategy in the context algorithm.
    *
    * @returns The key of the worker node.
-   * @throws {@link https://nodejs.org/api/errors.html#class-error} If the worker node key is null or undefined.
+   * @throws {@link https://nodejs.org/api/errors.html#class-error} If after configured retries the worker node key is null or undefined.
    */
   public execute (): number {
-    const workerNodeKey = (
-      this.workerChoiceStrategies.get(
-        this.workerChoiceStrategy
-      ) as IWorkerChoiceStrategy
-    ).choose()
+    const workerChoiceStrategy = this.workerChoiceStrategies.get(
+      this.workerChoiceStrategy
+    ) as IWorkerChoiceStrategy
+    if (!workerChoiceStrategy.hasPoolWorkerNodesReady()) {
+      return this.execute()
+    }
+    return this.executeStrategy(workerChoiceStrategy)
+  }
+
+  /**
+   * Executes the given worker choice strategy.
+   *
+   * @param workerChoiceStrategy - The worker choice strategy.
+   * @returns The key of the worker node.
+   * @throws {@link https://nodejs.org/api/errors.html#class-error} If after configured retries the worker node key is null or undefined.
+   */
+  private executeStrategy (workerChoiceStrategy: IWorkerChoiceStrategy): number {
+    let workerNodeKey: number | undefined
+    let chooseCount = 0
+    let retriesCount = 0
+    do {
+      workerNodeKey = workerChoiceStrategy.choose()
+      if (workerNodeKey == null && chooseCount > 0) {
+        retriesCount++
+      }
+      chooseCount++
+    } while (
+      workerNodeKey == null &&
+      retriesCount < (this.opts.retries as number)
+    )
     if (workerNodeKey == null) {
-      throw new TypeError('Worker node key chosen is null or undefined')
+      throw new Error(
+        `Worker node key chosen is null or undefined after ${retriesCount} retries`
+      )
     }
     return workerNodeKey
   }
@@ -196,6 +224,7 @@ export class WorkerChoiceStrategyContext<
    * @param opts - The worker choice strategy options.
    */
   public setOptions (opts: WorkerChoiceStrategyOptions): void {
+    this.opts = { ...DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS, ...opts }
     for (const workerChoiceStrategy of this.workerChoiceStrategies.values()) {
       workerChoiceStrategy.setOptions(opts)
     }