问题描述
我已经以Java的反应方式实现RabbitMQ发布者和使用者,但是我的发布功能挂起了频道。队列本身,声明一个队列并消耗,但是工作正常,我已经使用管理员的管理UI对其进行了测试。尝试发送更多消息时,我不再看到“ 队列声明成功”或“ 传递消息进行交换... ”之类的日志。顺便说一句,我知道在liver()中不需要declareQueue,但是我添加了它来验证在此特定通道中的通信是否有效。
我的代码是:
@Slf4j
@Component
public class RabbitConfigurator {
private TasksQueueConfig cfg;
private ReceiverOptions recopts;
private List<Address> addresses;
private Utils.ExceptionFunction<ConnectionFactory,Connection> connsupplier;
public RabbitConfigurator(TasksQueueConfig cfg) {
this.cfg = cfg;
addresses = cfg
.getHosts()
.stream()
.map(Address::new)
.collect(Collectors.toList());
connsupplier = cf -> {
LOG.info("initializing new RabbitMQ connection");
return cf.newConnection(addresses,"dmTasksProc");
};
}
@Bean
public ConnectionFactory rabbitMQConnectionFactory() {
ConnectionFactory cf = new ConnectionFactory();
cf.setHost(cfg.getHosts().get(0));
cf.setPort(5672);
cf.setUsername(cfg.getUsername());
cf.setPassword(cfg.getpassword());
return cf;
}
@Bean
public Sender sender(ConnectionFactory connFactory) {
SenderOptions sendOpts = new SenderOptions()
.connectionClosingTimeout(Duration.parse(cfg.getConnectionTimeout()))
.connectionFactory(connFactory)
.connectionsupplier(connsupplier)
.connectionSubscriptionScheduler(Schedulers.elastic());
return RabbitFlux.createSender(sendOpts);
}
@Bean
public Receiver receiver(ConnectionFactory connFactory) {
ReceiverOptions recopts = new ReceiverOptions()
.connectionClosingTimeout(Duration.parse(cfg.getConnectionTimeout()))
.connectionFactory(connFactory)
.connectionsupplier(connsupplier)
.connectionSubscriptionScheduler(Schedulers.elastic());
return RabbitFlux.createReceiver(recopts);
}
@Bean
public Flux<Delivery> deliveryFlux(Receiver receiver) {
return receiver.consumeAutoAck(cfg.getName(),new ConsumeOptions().qos(cfg.getPrefetchCount()));
}
@Bean
public AmqpAdmin rabbitAmqpAdmin(ConnectionFactory connFactory) {
return new RabbitAdmin(new CachingConnectionFactory(connFactory));
}
}
和消费者/发布者:
@Slf4j
@Service
public class TasksQueue implements disposableBean {
private TasksQueueConfig cfg;
private ObjectMapper mapper;
private Flux<Delivery> deliveryFlux;
private Receiver receiver;
private Sender sender;
private disposable consumer;
public TasksQueue(TasksQueueConfig cfg,AmqpAdmin amqpAdmin,ObjectMapper mapper,Flux<Delivery> deliveryFlux,Receiver receiver,Sender sender) {
this.cfg = cfg;
this.mapper = mapper;
this.deliveryFlux = deliveryFlux;
this.receiver = receiver;
this.sender = sender;
amqpAdmin.declareQueue(new Queue(cfg.getName(),false,false));
consumer = consume();
}
public Mono<Void> deliver(Flux<Task> tasks) {
var pub = sender.sendWithPublishConfirms(
tasks.map(task -> {
try {
String exchange = "";
LOG.debug("delivering message to exchange='{}',routingKey='{}'",exchange,cfg.getName());
return new OutboundMessage(exchange,cfg.getName(),mapper.writeValueAsBytes(task));
} catch(JsonProcessingException ex) {
throw Exceptions.propagate(ex);
}
}));
return sender.declareQueue(QueueSpecification.queue(cfg.getName()))
.flatMap(declareOk -> {
LOG.info("queue declare success");
return Mono.just(declareOk);
})
.thenMany(pub)
.doOnError(JsonProcessingException.class,ex -> LOG.error("Cannot prepare queue message:",ex))
.doOnError(ex -> LOG.error("Failed to send task to the queue:",ex))
.map(res -> {
if(res.isAck()) {
LOG.info("Message {} sent successfully",new String(res.getoutboundMessage().getBody()));
return res;
} else {
LOG.info("todo");
return res;
}
})
.then();
}
private disposable consume() {
return deliveryFlux
.retrywhen(Retry.fixedDelay(10,Duration.ofSeconds(1)))
.doOnError(err -> {
LOG.error("tasks consumer error",err);
})
.subscribe(m -> {
LOG.info("Received message {}",new String(m.getBody()));
});
}
@Override
public void destroy() throws Exception {
LOG.info("Cleaning up tasks queue resources");
consumer.dispose();
receiver.close();
sender.close();
}
}
尝试发送消息五分钟后,我得到日志:
r.r.ChannelCloseHandlers$SenderChannelCloseHandler:47: closing channel 1 by signal cancel
r.r.ChannelCloseHandlers$SenderChannelCloseHandler:53: Channel 1 didn't close normally: null
非常感谢您的提前输入!
解决方法
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