+ }
+ 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) {