Merge pull request #321 from tulios/only-emit-events-if-there-are-lis…

…teners Only emit events if there are listeners
tulios · Apr 1, 2019 · d6b88a5 · d6b88a5
1 parent 695164c
commit d6b88a5
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/instrumentation/emitter.js b/src/instrumentation/emitter.js
@@ -19,8 +19,10 @@ module.exports = class InstrumentationEventEmitter {
       throw new KafkaJSError('Invalid event name', { retriable: false })
     }
 
-    const event = new InstrumentationEvent(eventName, payload)
-    this.emitter.emit(eventName, event)
+    if (this.emitter.listenerCount(eventName) > 0) {
+      const event = new InstrumentationEvent(eventName, payload)
+      this.emitter.emit(eventName, event)
+    }
   }
 
   /**