Custom Java AEM annotation to do validations.

Hi everyone,

I created a custom annotation that I would like when a method annotated with it is called, it automatically calls a service also created by me.

My Servlet

@MyValidator
public void doPost(@Nonnull SlingHttpServletRequest request, @Nonnull SlingHttpServletResponse response) throws ServletException, IOException {

My Annotation

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface MyValidator {
}

My Service

@Component
@Service(RecaptchaValidateService.class)
public class ValidatorServiceImpl implements RecaptchaValidateService {

    //I will need to inject other services like other AEM service
    @Reference
    private HttpRequestService requestService;

    @Override
    public void validate() {
        ...get first the SlingHttpServletRequest and then validate the request
        if (isNotValid) throw new RuntimeException("my message")
    }
}

The idea is to make a validation annotation. But I don't know how to add a listener for this annotation in OSGi.

Do you have any idea how I can do it?