Spring云流的StreamRetryTemplate在集成测试中不重试

Question

@EnableBinding(Sink::class)
class MyListener(private val myService: Service) {

  @StreamListener(Sink.Input)
  fun consume(@Payload msg: MyMessage) = myService.process(msg)

  @SteamRetryTemplate
  fun getRetryTemplate() = RetryTemplate()
}

我是否遗漏了一些专门用于在集成测试中工作的重试的内容？

Answer 1

您使用的是测试绑定器还是嵌入式kafka代理？试验粘结剂相当有限；对于完全集成测试，首选使用嵌入式代理。

有关Apache Kafka文档，请参见Spring中的测试应用程序。

编辑

@SpringBootApplication
@EnableBinding(Sink.class)
public class So55855151Application {

    public static void main(String[] args) {
        SpringApplication.run(So55855151Application.class, args);
    }

    @StreamListener(Sink.INPUT)
    public void listen(String in) {
        System.out.println(in);
        throw new RuntimeException("fail");
    }

    @StreamRetryTemplate
    public RetryTemplate retrier() {
        return new RetryTemplate();
    }

}

spring.cloud.stream.bindings.input.group=input
spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}

@RunWith(SpringRunner.class)
@SpringBootTest
@EmbeddedKafka
public class So55855151ApplicationTests {

    @Autowired
    private KafkaTemplate<byte[], byte[]> template;

    @Autowired
    private RetryTemplate retrier;

    @Test
    public void test() throws InterruptedException {
        CountDownLatch latch = new CountDownLatch(5);
        this.retrier.registerListener(new RetryListener() {

            @Override
            public <T, E extends Throwable> boolean open(RetryContext context, RetryCallback<T, E> callback) {
                System.out.println("open");
                latch.countDown();
                return true;
            }

            @Override
            public <T, E extends Throwable> void close(RetryContext context, RetryCallback<T, E> callback,
                    Throwable throwable) {

                System.out.println("close");
                latch.countDown();
            }

            @Override
            public <T, E extends Throwable> void onError(RetryContext context, RetryCallback<T, E> callback,
                    Throwable throwable) {

                System.out.println("onError: " + throwable);
                latch.countDown();
            }

        });

        this.template.send("input", "test".getBytes());
        assertThat(latch.await(10, TimeUnit.SECONDS)).isTrue();
    }

}