Check if the method is invoked

Question

I am trying to create a logging OSGi bundle, which would be able to log input, output, exception (if any) parameters of all the methods which are marked with specific annotation.

I have tried to set up the Spring AOP logging in OSGi but I was unsuccessful.

All I need to know is how to determine when the method is being called? For example I have scanned all methods in a class which are annotated with my annotation and I have those methods in array or list.

For example there are three methods: getStatus, getDetails, getSomething. And the user invokes getDetails method, so how should I know when this method is invoked?

Answer 1

Detecting method calls requires you to instrument your code. If you want to do this at runtime this requires byte-code manipulation (which is what Spring AOP does, as far as I know). Alternatively you could instrument your code at compile-time using a custom preprocessing step that generates the instrumented Java-code, but I don't know if that is much easier.

I guess your best bet is to try and Spring AOP working.