chore: migrate to eslint 9

[poolifier.git] / src / pools / selection-strategies / round-robin-worker-choice-strategy.ts

diff --git a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
index 9cc966c47956a9a1689f82a435168127bbfbd272..1f5c499e0103dcddf612fe8e540d92c570d91656 100644 (file)
--- a/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
+++ b/src/pools/selection-strategies/round-robin-worker-choice-strategy.ts
@@ -1,54 +1,78 @@
-import type { IPoolWorker } from '../pool-worker'
-import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy'
-import type { IWorkerChoiceStrategy } from './selection-strategies-types'
+import type { IPool } from '../pool.js'
+import type { IWorker } from '../worker.js'
+import { AbstractWorkerChoiceStrategy } from './abstract-worker-choice-strategy.js'
+import type {
+  IWorkerChoiceStrategy,
+  WorkerChoiceStrategyOptions,
+} from './selection-strategies-types.js'
 
 /**
  * Selects the next worker in a round robin fashion.
- *
  * @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 class RoundRobinWorkerChoiceStrategy<
-    Worker extends IPoolWorker,
+    Worker extends IWorker,
     Data = unknown,
     Response = unknown
   >
   extends AbstractWorkerChoiceStrategy<Worker, Data, Response>
-  implements IWorkerChoiceStrategy<Worker, Data, Response> {
-  /**
-   * Id of the next worker.
-   */
-  private nextWorkerId: number = 0
+  implements IWorkerChoiceStrategy {
+  /** @inheritDoc */
+  public constructor (
+    pool: IPool<Worker, Data, Response>,
+    opts?: WorkerChoiceStrategyOptions
+  ) {
+    super(pool, opts)
+  }
 
   /** @inheritDoc */
   public reset (): boolean {
-    this.nextWorkerId = 0
+    this.resetWorkerNodeKeyProperties()
     return true
   }
 
   /** @inheritDoc */
-  public choose (): number {
-    const chosenWorkerKey = this.nextWorkerId
-    this.nextWorkerId =
-      this.nextWorkerId === this.pool.workers.length - 1
-        ? 0
-        : this.nextWorkerId + 1
-    return chosenWorkerKey
+  public update (): boolean {
+    return true
+  }
+
+  /** @inheritDoc */
+  public choose (): number | undefined {
+    const chosenWorkerNodeKey = this.nextWorkerNodeKey
+    this.setPreviousWorkerNodeKey(chosenWorkerNodeKey)
+    this.roundRobinNextWorkerNodeKey()
+    this.checkNextWorkerNodeKey()
+    return chosenWorkerNodeKey
   }
 
   /** @inheritDoc */
-  public remove (workerKey: number): boolean {
-    if (this.nextWorkerId === workerKey) {
-      if (this.pool.workers.length === 0) {
-        this.nextWorkerId = 0
-      } else {
-        this.nextWorkerId =
-          this.nextWorkerId > this.pool.workers.length - 1
-            ? this.pool.workers.length - 1
-            : this.nextWorkerId
-      }
+  public remove (workerNodeKey: number): boolean {
+    if (this.pool.workerNodes.length === 0) {
+      this.reset()
+      return true
+    }
+    if (
+      this.nextWorkerNodeKey === workerNodeKey &&
+      this.nextWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.nextWorkerNodeKey = this.pool.workerNodes.length - 1
+    }
+    if (
+      this.previousWorkerNodeKey === workerNodeKey &&
+      this.previousWorkerNodeKey > this.pool.workerNodes.length - 1
+    ) {
+      this.previousWorkerNodeKey = this.pool.workerNodes.length - 1
     }
     return true
   }
+
+  private roundRobinNextWorkerNodeKey (): number | undefined {
+    this.nextWorkerNodeKey =
+      this.nextWorkerNodeKey === this.pool.workerNodes.length - 1
+        ? 0
+        : (this.nextWorkerNodeKey ?? this.previousWorkerNodeKey) + 1
+    return this.nextWorkerNodeKey
+  }
 }