Throwing exceptions in RabbitMQ listener interceptors (advices)

Question

I've a listener like the following:

@RabbitListener(queues = "${myQueue}")
public void receiveMessages(Message message) {
   doTheBusinessLogic(message)
}

I understand from here What is the ServletFilter equalent of a RabbitMq Listener?

that we can execute some logic before getting inside the listener (an 'interceptor'), using Advice:

see the following code:

 @Bean(name = "rabbitListenerContainerFactory")
    public SimpleRabbitListenerContainerFactory simpleRabbitListenerContainerFactory(
            SimpleRabbitListenerContainerFactoryConfigurer configurer,
            ConnectionFactory connectionFactory) {
        SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
        configurer.configure(factory, connectionFactory);
        factory.setAdviceChain(new MDCAdvice());
        return factory;
    }

So my question is: if i throw a runtime exception from inside an advice (like this MDCAdvice) is it like i throw it from inside the listener method?

 public static class MDCAdvice implements MethodInterceptor {

        @Override
        public Object invoke(MethodInvocation invocation) throws Throwable {
            // pre process
            if (throwBefore) throw new RuntimeException("before")
            try {
                return invocation.proceed();
            }
            finally {
             // post process
            throw new RuntimeException("after")

            }
        }

    }

I mean: is a NACK returned to rabbitmq? Is the transaction rolled back if the listener is transactional?

In general, is totally equivalent to throw it inside the doTheBusinessLogic(message) above?

Thank you for your help

Answer 1

Yes; any exception thrown in the advice(s) will cause the same behavior as if the exception was thrown in the listener itself.

For example, if you want to discard a message, throw a AmqpRejectAndDontRequeueException .

You can achieve the same by using a MessagePostProcessor (in the afterReceivePostProcessors and return null .