Hikaricp: Avoid registering duplicate metrics (#6325)

* Hikaricp: Avoid registering duplicate metrics * Update instrumentation/hikaricp-3.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/hikaricp/HikariPoolInstrumentation.java Co-authored-by: Trask Stalnaker <[email protected]> * spotless * Trigger build Co-authored-by: Trask Stalnaker <[email protected]>
open-telemetry · Jul 15, 2022 · b3e543d · b3e543d
1 parent 07f7876
commit b3e543d
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/...n/java/io/opentelemetry/javaagent/instrumentation/hikaricp/HikariPoolInstrumentation.java b/...n/java/io/opentelemetry/javaagent/instrumentation/hikaricp/HikariPoolInstrumentation.java
@@ -39,8 +39,16 @@ public static class SetMetricsTrackerFactoryAdvice {
 
     @Advice.OnMethodEnter(suppress = Throwable.class)
     public static void onEnter(
-        @Advice.Argument(value = 0, readOnly = false) MetricsTrackerFactory userMetricsTracker) {
-
+        @Advice.Argument(value = 0, readOnly = false) MetricsTrackerFactory userMetricsTracker,
+        @Advice.FieldValue(value = "metricsTracker") AutoCloseable existingMetricsTracker)
+        throws Exception {
+
+      if (existingMetricsTracker != null) {
+        // we call close on the existing metrics tracker in case it's our wrapper, so that our
+        // wrapper will unregister itself and won't keep recording metrics which leads to warnings
+        // about duplicate metrics
+        existingMetricsTracker.close();
+      }
       userMetricsTracker = HikariSingletons.createMetricsTrackerFactory(userMetricsTracker);
     }
   }