Merge dependabot/npm_and_yarn/examples/typescript/http-client-pool/types/node-20...

[poolifier.git] / src / pools / abstract-pool.ts

diff --git a/src/pools/abstract-pool.ts b/src/pools/abstract-pool.ts
index bec4cd29056f4bf531e5f267e767795d4a1753b0..604c7af8ad32dde3959dcb75166427458999c9f7 100644 (file)
--- a/src/pools/abstract-pool.ts
+++ b/src/pools/abstract-pool.ts
@@ -17,6 +17,7 @@ import {
   max,
   median,
   min,
+  once,
   round
 } from '../utils'
 import { KillBehaviors } from '../worker/worker-options'
@@ -495,10 +496,7 @@ export abstract class AbstractPool<
   private checkMessageWorkerId (message: MessageValue<Data | Response>): void {
     if (message.workerId == null) {
       throw new Error('Worker message received without worker id')
-    } else if (
-      message.workerId != null &&
-      this.getWorkerNodeKeyByWorkerId(message.workerId) === -1
-    ) {
+    } else if (this.getWorkerNodeKeyByWorkerId(message.workerId) === -1) {
       throw new Error(
         `Worker message received from unknown worker '${message.workerId}'`
       )
@@ -977,6 +975,7 @@ export abstract class AbstractPool<
           )
         }
       }
+      // FIXME: should be registered only once
       this.registerWorkerMessageListener(workerNodeKey, killMessageListener)
       this.sendToWorker(workerNodeKey, { kill: true })
     })
@@ -1222,8 +1221,8 @@ export abstract class AbstractPool<
     worker.on('error', this.opts.errorHandler ?? EMPTY_FUNCTION)
     worker.on('error', error => {
       const workerNodeKey = this.getWorkerNodeKeyByWorker(worker)
+      this.flagWorkerNodeAsNotReady(workerNodeKey)
       const workerInfo = this.getWorkerInfo(workerNodeKey)
-      workerInfo.ready = false
       this.emitter?.emit(PoolEvents.error, error)
       this.workerNodes[workerNodeKey].closeChannel()
       if (
@@ -1276,6 +1275,8 @@ export abstract class AbstractPool<
               workerUsage.tasks.executing === 0 &&
               this.tasksQueueSize(localWorkerNodeKey) === 0)))
       ) {
+        // Flag the worker node as not ready immediately
+        this.flagWorkerNodeAsNotReady(localWorkerNodeKey)
         this.destroyWorkerNode(localWorkerNodeKey).catch(error => {
           this.emitter?.emit(PoolEvents.error, error)
         })
@@ -1542,7 +1543,11 @@ export abstract class AbstractPool<
     workerInfo.ready = message.ready as boolean
     workerInfo.taskFunctionNames = message.taskFunctionNames
     if (this.ready) {
-      this.emitter?.emit(PoolEvents.ready, this.info)
+      const emitPoolReadyEventOnce = once(
+        () => this.emitter?.emit(PoolEvents.ready, this.info),
+        this
+      )
+      emitPoolReadyEventOnce()
     }
   }
 
@@ -1601,7 +1606,7 @@ export abstract class AbstractPool<
    * @returns The worker information.
    */
   protected getWorkerInfo (workerNodeKey: number): WorkerInfo {
-    return this.workerNodes[workerNodeKey].info
+    return this.workerNodes[workerNodeKey]?.info
   }
 
   /**
@@ -1641,6 +1646,10 @@ export abstract class AbstractPool<
     }
   }
 
+  protected flagWorkerNodeAsNotReady (workerNodeKey: number): void {
+    this.getWorkerInfo(workerNodeKey).ready = false
+  }
+
   /** @inheritDoc */
   public hasWorkerNodeBackPressure (workerNodeKey: number): boolean {
     return (