refactor: move message channel property from worker info to node

[poolifier.git] / src / pools / worker-node.ts

diff --git a/src/pools/worker-node.ts b/src/pools/worker-node.ts
index ea50ebdbe036353070af773d4470213c10061237..a5482dcd29f6778b69c70bf322c2370be13918b3 100644 (file)
--- a/src/pools/worker-node.ts
+++ b/src/pools/worker-node.ts
@@ -1,9 +1,11 @@
+import { MessageChannel } from 'node:worker_threads'
 import { CircularArray } from '../circular-array'
 import { Queue } from '../queue'
+import type { Task } from '../utility-types'
+import { DEFAULT_TASK_NAME } from '../utils'
 import {
   type IWorker,
   type IWorkerNode,
-  type Task,
   type WorkerInfo,
   type WorkerType,
   WorkerTypes,
@@ -20,7 +22,9 @@ export class WorkerNode<Worker extends IWorker, Data = unknown>
 implements IWorkerNode<Worker, Data> {
   public readonly worker: Worker
   public readonly info: WorkerInfo
+  public messageChannel?: MessageChannel
   public usage: WorkerUsage
+  private readonly tasksUsage: Map<string, WorkerUsage>
   private readonly tasksQueue: Queue<Task<Data>>
 
   /**
@@ -28,12 +32,15 @@ implements IWorkerNode<Worker, Data> {
    *
    * @param worker - The worker.
    * @param workerType - The worker type.
-   * @internal
    */
   constructor (worker: Worker, workerType: WorkerType) {
     this.worker = worker
     this.info = this.initWorkerInfo(worker, workerType)
+    if (workerType === WorkerTypes.thread) {
+      this.messageChannel = new MessageChannel()
+    }
     this.usage = this.initWorkerUsage()
+    this.tasksUsage = new Map<string, WorkerUsage>()
     this.tasksQueue = new Queue<Task<Data>>()
   }
 
@@ -43,7 +50,7 @@ implements IWorkerNode<Worker, Data> {
   }
 
   /**
-   * Worker node tasks queue maximum size.
+   * Tasks queue maximum size.
    *
    * @returns The tasks queue maximum size.
    */
@@ -66,8 +73,41 @@ implements IWorkerNode<Worker, Data> {
     this.tasksQueue.clear()
   }
 
+  /** @inheritdoc */
   public resetUsage (): void {
     this.usage = this.initWorkerUsage()
+    this.tasksUsage.clear()
+  }
+
+  /** @inheritdoc */
+  public closeChannel (): void {
+    if (this.messageChannel != null) {
+      this.messageChannel?.port1.unref()
+      this.messageChannel?.port2.unref()
+      this.messageChannel?.port1.close()
+      this.messageChannel?.port2.close()
+      delete this.messageChannel
+    }
+  }
+
+  /** @inheritdoc */
+  public getTaskWorkerUsage (name: string): WorkerUsage | undefined {
+    if (!Array.isArray(this.info.taskFunctions)) {
+      throw new Error(
+        `Cannot get task worker usage for task function name '${name}' when task function names list is not yet defined`
+      )
+    }
+    if (
+      name === DEFAULT_TASK_NAME &&
+      Array.isArray(this.info.taskFunctions) &&
+      this.info.taskFunctions.length > 1
+    ) {
+      name = this.info.taskFunctions[1]
+    }
+    if (!this.tasksUsage.has(name)) {
+      this.tasksUsage.set(name, this.initTaskWorkerUsage(name))
+    }
+    return this.tasksUsage.get(name)
   }
 
   private initWorkerInfo (worker: Worker, workerType: WorkerType): WorkerInfo {
@@ -115,6 +155,42 @@ implements IWorkerNode<Worker, Data> {
     }
   }
 
+  private initTaskWorkerUsage (name: string): WorkerUsage {
+    const getTaskQueueSize = (): number => {
+      let taskQueueSize = 0
+      for (const task of this.tasksQueue) {
+        if (task.name === name) {
+          ++taskQueueSize
+        }
+      }
+      return taskQueueSize
+    }
+    return {
+      tasks: {
+        executed: 0,
+        executing: 0,
+        get queued (): number {
+          return getTaskQueueSize()
+        },
+        failed: 0
+      },
+      runTime: {
+        history: new CircularArray()
+      },
+      waitTime: {
+        history: new CircularArray()
+      },
+      elu: {
+        idle: {
+          history: new CircularArray()
+        },
+        active: {
+          history: new CircularArray()
+        }
+      }
+    }
+  }
+
   /**
    * Gets the worker id.
    *