Get Partition and Offset number in which kafka message is being processed using StreamBridge

Question

I need to print/log/store the kafka partition and offset number in which my message is being processed. How can I achieve that? I am using StreamBridge to send the message from producer and also using functional spring kafka streams approach

Public delegateToSupplier(String id, Abc obj) {
Message<Abc> message = MessageBuilder.withPayload(obj).seHeaders(KafkaHeaders.MESSAGE_KEY, id.getBytes()).build();
streamBridge.send("out-topic", message);
}

Answer 1

The record metadata is available (asynchronously) via the metadata channel:

@SpringBootApplication
public class So66436499Application {

    public static void main(String[] args) {
        SpringApplication.run(So66436499Application.class, args);
    }

    @Autowired
    StreamBridge bridge;

    @Bean
    public ApplicationRunner runner() {
        return args -> {
            this.bridge.send("myBinding", "test");
            Thread.sleep(5000);
        };
    }

    @ServiceActivator(inputChannel = "meta")
    void meta(Message<?> sent) {
        System.out.println("Sent: " + sent.getHeaders().get(KafkaHeaders.RECORD_METADATA, RecordMetadata.class));
    }

}

spring.cloud.stream.bindings.myBinding.destination=foo
spring.cloud.stream.kafka.bindings.myBinding.producer.record-metadata-channel=meta

Sent: foo-0@5