如何设置spring-rabbitmq侦听器的接收速率

Question

I am using spring-rabbitmq ,and I can get messages successfully. but when I debug I found that the listener creates a thread and it will ask for messages every 1 second .I think the rate is too high .what I want to do is to set the rate 1 min or any other. I search a lot but does not works

My springrabbit.xml:

<rabbit:listener-container connection-factory="connectionFactory"  message-converter="jsonMessageConverter" >
        <rabbit:listener queues="notification" ref="messageReceiver"/>
    </rabbit:listener-container>

my java code :

@Override
        public void onMessage(Message message)  { System.out.println("messagebody:   "+new String(message.getBody()));
            LOGGER.info(dateFormatUtil.getDateFormat(new Date())+new String(message.getBody()));
            boolean result=false;
            SendSingleEmailService sendSingleEmailService = new SendSingleEmailService();
            try {
                result =sendSingleEmailService.send(new String(message.getBody()));
            } catch (FileNotFoundException e) {
                LOGGER.error(dateFormatUtil.getDateFormat(new Date())+"[NOTIFICATION] [ERROR] message is null!");
                e.printStackTrace();
            }
            if(!result) {
                try{
                    throw new Exception();
                }catch (FileNotFoundException e) {
                    throw new RuntimeException(e);
                }catch (Exception e) {
                    throw new RuntimeException(e);
                }finally {
                    LOGGER.error(dateFormatUtil.getDateFormat(new Date())+"[NOTIFICATION] [ERROR] Send Email failed!");
                }
            }


        }

Some of debug results are as follows:

[2017-08-16 18:23:08,595]DEBUG  4286[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:09,600]DEBUG  5291[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:10,602]DEBUG  6293[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:11,603]DEBUG  7294[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:12,609]DEBUG  8300[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:13,612]DEBUG  9303[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:14,615]DEBUG 10306[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:15,617]DEBUG 11308[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:16,618]DEBUG 12309[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0
[2017-08-16 18:23:17,619]DEBUG 13310[SimpleAsyncTaskExecutor-1] - org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.nextMessage(BlockingQueueConsumer.java:186) - Retrieving delivery for Consumer: tag=[amq.ctag-5AR22lnMjmLAj329LDpGbQ], channel=Cached Rabbit Channel: AMQChannel(amqp://admin@192.168.203.151:5672/,1), acknowledgeMode=AUTO local queue size=0

Answer 1

You can increase the receiveTimeout - see Message Listener Container Configuration .

However, the container will be less responsive to stop() requests.

I think you are overly concerned about the polling rate - there is very little overhead to poll the internal queue used to stage delivered messages.

If it's just the log "noise" you want to remove (when debugging) set the org.springframework.amqp.rabbit.listener.BlockingQueueConsumer log category to INFO or WARN .

The upcoming 2.0 release has a new DirectMessageListenerContainer which does not poll an internal queue and eliminates this issue. Info here .

EDIT

listener still ask rabbitmq for messages every 1s

If you are still seeing the debug message every 1s, you have not configured the receiveTimeout properly; IT IS NOT "asking rabbitmq" for a message, the thread is waking up after waiting for receiveTimeout (and found that rabbit has not sent a new message) so it can react to a stop() ; then it sleeps again until a new message arrives or it times out again. There is no interaction with the broker if no messages are available - messages are pushed by the broker.

Perhaps you are misunderstanding the purpose of the listener container. It is for message-driven applications - you can't "slow down" the rate that messages arrive - they are pushed by the broker.

If you want to receive a message only once a minute, you should use a RabbitTemplate receive() (or receiveAndConvert() ) method instead of a message listener container.