Osgi annotation processing

I have a component declared using the @Component annotation, in which there is a set of methods that implement communication with another api, in my product there are operations that are prohibited for a user with an anonymous id. I want to create an annotation, for example @ProhibitedForAnonym, which, every time the method is called, will check the ID of the anonymous customer, with the ID in the method parameter and throw an error if the IDs match. But I don't understand how to do annotation processing in OSGI, maybe some kind of interceptor?

There is no general interception framework in OSGi. However, you could do interception in the following ways:

1. Don't. Personally, I feel that since we've lambdas a code-based solution has won hands on over a 'magic' annotation check. It is about the same number of characters but a lambda based call allows me to single step, provide context to the security check, does not suffer from the THIS problem, is testable, and requires no complex framework with lots of bug opportunities.
2. Use the byte code weaving support in OSGi. You need to register a weaver early and then weave any class that has these annotations. You can take a look at https://github.com/aQute-os/biz.aQute.osgi.util/tree/master/biz.aQute.trace for an example of how to use the byte code weaver. Make sure your weaver is there first. If you use bndtools you can add it to the -runpath to run before anybody else. Or use start levels.
3. Use proxying. You can 'hide' and original service with the Service Hooks and then register a proxy. In the proxy you can then do the annotation check. This also requires that this code runs first and cannot be updated. I think the spec has an example of this

You might want to read: https://www.aqute.biz/appnotes/interceptors.html