Question

与SO相关的问题：Spring Integration Java DSL using JMS retry/redlivery

在connectionFactory上使用事务处理的轮询器和JmsTransactionManager，并将maximumRedeliveries设置为3会导致实际重新尝试的次数增加一倍。

如何获得此证书以兑现连接工厂的重新交付设置？

我的connectionFactory的构建方式为：

 @Bean (name="spring-int-connection-factory")
    ActiveMQConnectionFactory jmsConnectionFactory(){
        return buildConnectionFactory(
                brokerUrl,
                DELAY_2_SECS,
                MAX_REDELIVERIES,
                "spring-int");
    }

 public static ActiveMQConnectionFactory buildConnectionFactory(String brokerUrl, Long retryDelay, Integer maxRedeliveries, String clientIdPrefix){
        ActiveMQConnectionFactory amqcf = new ActiveMQConnectionFactory();
        amqcf.setBrokerURL(brokerUrl);
        amqcf.setClientIDPrefix(clientIdPrefix);
        if (maxRedeliveries != null) {
            if (retryDelay == null) {
                retryDelay = 500L;
            }
            RedeliveryPolicy rp = new org.apache.activemq.RedeliveryPolicy();
            rp.setInitialRedeliveryDelay(retryDelay);
            rp.setRedeliveryDelay(retryDelay);
            rp.setMaximumRedeliveries(maxRedeliveries);
        }
        return amqcf;
    }

我与民意测验的流程如下：

@Bean
    public IntegrationFlow flow2(@Qualifier("spring-int-connection-factory") ConnectionFactory connectionFactory) {

        IntegrationFlow flow =  IntegrationFlows.from(
                Jms.inboundAdapter(connectionFactory)
                        .configureJmsTemplate(t -> t.receiveTimeout(1000).sessionTransacted(true))
                        .destination(INPUT_DIRECT_QUEUE),
                e -> e.poller(Pollers
                        .fixedDelay(5000)
                        .transactional()
                        .errorChannel("customErrorChannel")
                        .maxMessagesPerPoll(2))
        ).handle(this.msgHandler).get();

        return flow;
    }

我的errorChannel处理程序只是重新抛出，这导致JMS重新交付。

在将处理程序设置为始终抛出异常的情况下运行此命令时，我看到消息处理程序实际上收到了7次消息（1次初始发送和6次重新发送）。

根据我的connectionFactory配置，我预期只有3个重新交付。

有什么想法会导致尝试次数增加一倍，以及如何缓解这种情况？

Answer 1

这对我来说很好-停在4 ...

@SpringBootApplication
public class So51792909Application {

    private static final Logger logger = LoggerFactory.getLogger(So51792909Application.class);

    public static void main(String[] args) {
        SpringApplication.run(So51792909Application.class, args);
    }

    @Bean
    public ApplicationRunner runner(JmsTemplate template) {
        return args -> {
            for (int i = 0; i < 1; i++) {
                template.convertAndSend("foo", "test");
            }
        };
    }

    @Bean
    public IntegrationFlow flow(ConnectionFactory connectionFactory) {
        return IntegrationFlows.from(Jms.inboundAdapter(connectionFactory)
                        .destination("foo"), e -> e
                            .poller(Pollers
                                    .fixedDelay(5000)
                                    .transactional()
                                    .maxMessagesPerPoll(2)))
                .handle((p, h) -> {
                    System.out.println(h.get("JMSXDeliveryCount"));
                    try {
                        Thread.sleep(2000);
                    }
                    catch (InterruptedException e1) {
                        Thread.currentThread().interrupt();
                    }
                    throw new RuntimeException("foo");
                })
                .get();
    }

    @Bean
    public JmsTransactionManager transactionManager(ConnectionFactory cf) {
        return new JmsTransactionManager(cf);
    }

    @Bean
    public ActiveMQConnectionFactory amqCF() {
        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("vm://localhost?broker.persistent=false");
        RedeliveryPolicy rp = new RedeliveryPolicy();
        rp.setMaximumRedeliveries(3);
        cf.setRedeliveryPolicy(rp);
        return cf;
    }

    public CachingConnectionFactory connectionFactory() {
        return new CachingConnectionFactory(amqCF());
    }

    @JmsListener(destination = "ActiveMQ.DLQ")
    public void listen(String in) {
        logger.info(in);
    }

}

通过使用JmsTransactionManager的errorChannel引发的Spring Integration重新交付不支持maximumRedeliveries

1 个答案: