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Add warning message if the Java agent is in the class path #3960

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Merged
merged 3 commits into from
Jan 9, 2025
Merged

Add warning message if the Java agent is in the class path #3960

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a3e3d04
Add warning message if the Java agent is in the class path
jeanbisutti Nov 14, 2024
58e0d94
Merge remote-tracking branch 'origin/main' into java-agent-class-path…
trask Jan 9, 2025
aa0b407
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trask Jan 9, 2025
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12 changes: 11 additions & 1 deletion .../src/main/java/com/microsoft/applicationinsights/agent/internal/init/FirstEntryPoint.java
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Original file line number Diff line number Diff line change
Expand Up @@ -118,9 +118,19 @@ public void init(EarlyInitAgentConfig earlyConfig) {
startupLogger.debug("JAVA_TOOL_OPTIONS: " + System.getenv("JAVA_TOOL_OPTIONS"));
}

String classPath = System.getProperty("java.class.path");
// class path null with a Spring Boot executable JAR
if (classPath != null
&& classPath.contains(
"applicationinsights-agent")) { // JAR name in Maven central, the user could have
// renamed it
startupLogger.warn(
"The applicationinsights-agent JAR is in the class path. You should remove it because it could lead to unexpected results. You should configure the Java agent with -javaagent. You can also use the runtime attachment with Spring Boot applications.");
}

if (startupLogger.isTraceEnabled()) {
startupLogger.trace("OS: " + System.getProperty("os.name"));
startupLogger.trace("Classpath: " + System.getProperty("java.class.path"));
startupLogger.trace("Classpath: " + classPath);
startupLogger.trace("Netty versions: " + NettyVersions.extract());
startupLogger.trace("Env: " + System.getenv());
startupLogger.trace("System properties: " + findSystemProperties());
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