Support 'classpath' mode to be used when creating AOT caches

mcculls · mcculls · commit f07d03dc9ea1 · 2025-12-11T01:40:02.000Z
In this mode only the agent jar is added to the boot classpath, no services are started
diff --git a/dd-java-agent/src/main/java/datadog/trace/bootstrap/AgentBootstrap.java b/dd-java-agent/src/main/java/datadog/trace/bootstrap/AgentBootstrap.java
@@ -143,6 +143,9 @@ private static void agentmainImpl(
     }
 
     final URL agentJarURL = installAgentJar(inst);
+    if ("classpath".equalsIgnoreCase(agentArgs)) {
+      return; // only augment the classpath, don't start any services
+    }
     final Class<?> agentClass;
     try {
       agentClass = Class.forName("datadog.trace.bootstrap.Agent", true, null);

Original file line number	Diff line number	Diff line change
`@@ -143,6 +143,9 @@ private static void agentmainImpl(`
`143`	`143`	`}`
`144`	`144`
`145`	`145`	`final URL agentJarURL = installAgentJar(inst);`
	`146`	`+ if ("classpath".equalsIgnoreCase(agentArgs)) {`
	`147`	`+ return; // only augment the classpath, don't start any services`
	`148`	`+ }`
`146`	`149`	`final Class<?> agentClass;`
`147`	`150`	`try {`
`148`	`151`	`agentClass = Class.forName("datadog.trace.bootstrap.Agent", true, null);`