X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fworker%2Fabstract-worker.ts;h=d41115bc390b26f63eeaa9ae4500d678cb1bd7b4;hb=934f09c6fe1a3e6e36ba76f9a8e9320311a7636f;hp=fd163547a78eb08c7ca0c0a93519374530ed5c8f;hpb=729c563db85562dd7d0f7733b1a3e2d98467134b;p=poolifier.git

diff --git a/src/worker/abstract-worker.ts b/src/worker/abstract-worker.ts
index fd163547..d41115bc 100644
--- a/src/worker/abstract-worker.ts
+++ b/src/worker/abstract-worker.ts
@@ -1,16 +1,22 @@
 import { AsyncResource } from 'async_hooks'
+import type { Worker } from 'cluster'
+import type { MessagePort } from 'worker_threads'
 import type { MessageValue } from '../utility-types'
-import type { WorkerOptions } from './worker-options'
+import type { KillBehavior, WorkerOptions } from './worker-options'
+import { KillBehaviors } from './worker-options'
+
+const DEFAULT_MAX_INACTIVE_TIME = 1000 * 60
+const DEFAULT_KILL_BEHAVIOR: KillBehavior = KillBehaviors.SOFT
 
 /**
  * Base class containing some shared logic for all poolifier workers.
  *
  * @template MainWorker Type of main worker.
- * @template Data Type of data this worker receives from pool's execution.
- * @template Response Type of response the worker sends back to the main worker.
+ * @template Data Type of data this worker receives from pool's execution. This can only be serializable data.
+ * @template Response Type of response the worker sends back to the main worker. This can only be serializable data.
  */
 export abstract class AbstractWorker<
-  MainWorker,
+  MainWorker extends Worker | MessagePort,
   Data = unknown,
   Response = unknown
 > extends AsyncResource {
@@ -18,6 +24,10 @@ export abstract class AbstractWorker<
    * The maximum time to keep this worker alive while idle. The pool automatically checks and terminates this worker when the time expires.
    */
   protected readonly maxInactiveTime: number
+  /**
+   * The kill behavior set as option on the Worker constructor or a default value.
+   */
+  protected readonly killBehavior: KillBehavior
   /**
    * Whether the worker is working asynchronously or not.
    */
@@ -37,21 +47,27 @@ export abstract class AbstractWorker<
    * @param type The type of async event.
    * @param isMain Whether this is the main worker or not.
    * @param fn Function processed by the worker when the pool's `execution` function is invoked.
+   * @param mainWorker Reference to main worker.
    * @param opts Options for the worker.
    */
   public constructor (
     type: string,
     isMain: boolean,
     fn: (data: Data) => Response,
-    public readonly opts: WorkerOptions = {}
+    protected mainWorker?: MainWorker | null,
+    public readonly opts: WorkerOptions = {
+      killBehavior: DEFAULT_KILL_BEHAVIOR,
+      maxInactiveTime: DEFAULT_MAX_INACTIVE_TIME
+    }
   ) {
     super(type)
-
-    this.maxInactiveTime = this.opts.maxInactiveTime ?? 1000 * 60
+    this.killBehavior = this.opts.killBehavior ?? DEFAULT_KILL_BEHAVIOR
+    this.maxInactiveTime =
+      this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME
     this.async = !!this.opts.async
     this.lastTask = Date.now()
-    if (!fn) throw new Error('fn parameter is mandatory')
-    // keep the worker active
+    this.checkFunctionInput(fn)
+    // Keep the worker active
     if (!isMain) {
       this.interval = setInterval(
         this.checkAlive.bind(this),
@@ -59,12 +75,47 @@ export abstract class AbstractWorker<
       )
       this.checkAlive.bind(this)()
     }
+
+    this.mainWorker?.on('message', (value: MessageValue<Data, MainWorker>) => {
+      if (value?.data && value.id) {
+        // Here you will receive messages
+        if (this.async) {
+          this.runInAsyncScope(this.runAsync.bind(this), this, fn, value)
+        } else {
+          this.runInAsyncScope(this.run.bind(this), this, fn, value)
+        }
+      } else if (value.parent) {
+        // Save a reference of the main worker to communicate with it
+        // This will be received once
+        this.mainWorker = value.parent
+      } else if (value.kill) {
+        // Here is time to kill this worker, just clearing the interval
+        if (this.interval) clearInterval(this.interval)
+        this.emitDestroy()
+      }
+    })
+  }
+
+  /**
+   * Check if the `fn` parameter is passed to the constructor.
+   *
+   * @param fn The function that should be defined.
+   */
+  private checkFunctionInput (fn: (data: Data) => Response) {
+    if (!fn) throw new Error('fn parameter is mandatory')
   }
 
   /**
    * Returns the main worker.
+   *
+   * @returns Reference to the main worker.
    */
-  protected abstract getMainWorker (): MainWorker
+  protected getMainWorker (): MainWorker {
+    if (!this.mainWorker) {
+      throw new Error('Main worker was not set')
+    }
+    return this.mainWorker
+  }
 
   /**
    * Send a message to the main worker.
@@ -78,7 +129,7 @@ export abstract class AbstractWorker<
    */
   protected checkAlive (): void {
     if (Date.now() - this.lastTask > this.maxInactiveTime) {
-      this.sendToMainWorker({ kill: 1 })
+      this.sendToMainWorker({ kill: this.killBehavior })
     }
   }
 
@@ -86,6 +137,7 @@ export abstract class AbstractWorker<
    * Handle an error and convert it to a string so it can be sent back to the main worker.
    *
    * @param e The error raised by the worker.
+   * @returns Message of the error.
    */
   protected handleError (e: Error | string): string {
     return (e as unknown) as string