How to intercept method with ByteBuddy as in CGLIB with MethodInterceptor for calling MethodProxy.invokeSuper(...)

Question

I want to intercept some methods with ByteBuddy. When i use InvocationHandlerAdapter.of(invocationHandler) i can't invoke super method. Holding object instance is not suitable for my case. I want exactly as in CGLIB like below.

(MethodInterceptor)(obj, method, args, proxy)->{
   // to do some work
   Object o = proxy.invokeSuper(obj,args);
   // to do some work
   return o;
}

How can i achieve intercepting method in ByteBuddy like this?

I tried MethodCall type of Implemetation but it not solved my problem. Because i can't manage MethodCall.invokeSuper() in this case.

.intercept(MethodCall
                        .run(() -> System.out.println("Before"))
                        .andThen(MethodCall.invokeSuper())
                        .andThen(MethodCall
                                .run((() -> System.out.println("After")))))

Answer 1

Have a look at MethodDelegation, for example:

public class MyDelegation {
  @RuntimeType
  public static Object intercept(@SuperCall Callable<?> superCall) throws Exception {
    // to do some work
    Object o = superCall.call();
    // to do some work
    return o;
  }
}

Then using:

.intercept(MethodDelegation.to(MyDelegation.class))

You can check the javadoc for MethodDelegation for more annotations that you can use to inject contextual information.