Is there a way to get the list of active instrumentation libraries?

[sakariye]

I'm using a customized otel java agent from a third party. I don't know which instrumentation libraries/modules they have on by default. Is there a way to get this list? I'm hoping there's API or SDK call I can make to get a comprehensive list of currently enabled instrumentation libraries.

[laurit]

You could turn on debug logging with -Dotel.javaagent.debug=true and examine the output. Look for lines like

[otel.javaagent 2024-04-20 17:17:54:934 +0300] [main] DEBUG io.opentelemetry.javaagent.tooling.instrumentation.InstrumentationLoader - Loading instrumentation internal-class-loader [class io.opentelemetry.javaagent.instrumentation.internal.classloader.ClassLoaderInstrumentationModule]
[otel.javaagent 2024-04-20 17:17:54:934 +0300] [otel-javaagent-transform-safe-logger] DEBUG io.opentelemetry.javaagent.extension.instrumentation.InstrumentationModule - Instrumentation internal-application-logging is disabled

[sakariye]

Awesome, thanks.