Issue 9336: Auto-instrumentation with JMX not working without a trigg…

…er (open-telemetry#9362)
laurit · Sep 1, 2023 · 71db9ff · 71db9ff
1 parent 323be54
commit 71db9ff
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/...metrics/library/src/main/java/io/opentelemetry/instrumentation/jmx/engine/BeanFinder.java b/...metrics/library/src/main/java/io/opentelemetry/instrumentation/jmx/engine/BeanFinder.java
@@ -5,6 +5,7 @@
 
 package io.opentelemetry.instrumentation.jmx.engine;
 
+import java.lang.management.ManagementFactory;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
@@ -38,6 +39,13 @@ class BeanFinder {
  void discoverBeans(MetricConfiguration conf) {
  this.conf = conf;
 
+ if (!conf.isEmpty()) {
+ // Issue 9336: Corner case: PlatformMBeanServer will remain unitialized until a direct
+ // reference to it is made. This call makes sure that the PlatformMBeanServer will be in
+ // the set of MBeanServers reported by MBeanServerFactory.
+ ManagementFactory.getPlatformMBeanServer();
+ }
+
  exec.schedule(
  new Runnable() {
  @Override