获取使用StreamBridge处理kafka消息的分区和偏移量

Question

我需要打印/记录/存储处理消息的kafka分区和偏移量。我如何才能做到这一点？我使用StreamBridge从制作人那里发送消息，还使用功能性spring kafka streams方法

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

记录元数据可通过元数据通道（异步）获得：

java prettyprint-override">@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