Spring Cloud Stream Kafka Exception Handling

Question

I am working on an application where the event causes spring data repository to save data;

Entity entity = entityRepository.save((Entity) event.getPayload());

this code can throw various exceptions, like DataIntegrityViolationException which is runtime exception.

My Question is how to

• Handle such an exception and
• generate a Message with Payload caused this error
• with Exception,
• allowing Producer to take an action.

Answer 1

Add a custom error handler to the binding's listener container...

@Bean
ListenerContainerCustomizer<AbstractMessageListenerContainer<?, ?>> customizer() {
    return (container, dest, group) -> {
        if (group.equals("theOneIWant")) {
            container.setErrorHandler( ... );
        }
    };
}