RabbitTemplate to connect to RabbitMQ : getting - NOT_FOUND - no queue

Question

I am new to spring and working on a cloud based application and trying to use RabbitTemplate and RabbitMQ.

I am able to store data to queue using.

rabbitTemplate.convertAndSend(QUEUE_NAME, msg);

But when i am receiving the data from the same queue using

rabbitTemplate.receiveAndConvert(QUEUE_NAME)

I am getting exception as:

ERR Caused by: java.io.IOException 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.ChannelN.basicGet(ChannelN.java:985) 2016-09-13T11:15:21.38+0530 [App/0] ERR at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 2016-09-13T11:15:21.38+0530 [App/0] ERR at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 2016-09-13T11:15:21.38+0530 [App/0] ERR at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 2016-09-13T11:15:21.38+0530 [App/0] ERR at java.lang.reflect.Method.invoke(Method.java:498) 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:625) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.sun.proxy.$Proxy55.basicGet(Unknown Source) 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.core.RabbitTemplate$4.doInRabbit(RabbitTemplate.java:650) 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.core.RabbitTemplate$4.doInRabbit(RabbitTemplate.java:646) 2016-09-13T11:15:21.38+0530 [App/0] ERR at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:1045) 2016-09-13T11:15:21.38+0530 [App/0] ERR ... 50 more 2016-09-13T11:15:21.38+0530 [App/0] ERR Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method(reply-code=404, reply-text=NOT_FOUND - no queue 'testqueue' in vhost '9cc1b4db-636e-4251-bb68-c7ed7f3be1d3', class-id=60, method-id=70) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.utility.ValueOrException.getValue(ValueOrException.java:67) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.utility.BlockingValueOrException.uninterruptibleGetValue(BlockingValueOrException.java:33) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel$BlockingRpcContinuation.getReply(AMQChannel.java:343) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.privateRpc(AMQChannel.java:216) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:118) 2016-09-13T11:15:21.38+0530 [App/0] ERR ... 60 more 2016-09-13T11:15:21.38+0530 [App/0] ERR Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; protocol method: #method(reply-code=404, reply-text=NOT_FOUND - no queue 'testqueue' in vhost '9cc1b4db-636e-4251-bb68-c7ed7f3be1d3', class-id=60, method-id=70) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.ChannelN.asyncShutdown(ChannelN.java:478) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.ChannelN.processAsync(ChannelN.java:315) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.handleCompleteInboundCommand(AMQChannel.java:144) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQChannel.handleFrame(AMQChannel.java:91) 2016-09-13T11:15:21.38+0530 [App/0] ERR at com.rabbitmq.client.impl.AMQConnection$MainLoop.run(AMQConnection.java:552)

My Code:

@Configuration
@Profile("cloud")
public class RabbitConfig extends AbstractCloudConfig {

@Bean
public RabbitTemplate rabbitTemplate(){
    CachingConnectionFactory cachingConnectionFactory = (CachingConnectionFactory)connectionFactory().rabbitConnectionFactory();

    cachingConnectionFactory.setCacheMode(CachingConnectionFactory.CacheMode.CHANNEL);

    RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);

    return rabbitTemplate;
    }
}

My Controller:

@RestController
@RequestMapping("mq")
public class MainController {

@Autowired
private RabbitTemplate rabbitTemplate;

private static final String QUEUE_NAME = "testqueue";

@RequestMapping(value = "/putinq/{msg}",method = RequestMethod.PUT)
public String storeMessage(@PathVariable("msg") String msg){
    String result = "";

    rabbitTemplate.setQueue(QUEUE_NAME);
    try {
        rabbitTemplate.convertAndSend(QUEUE_NAME, msg); // no exception
        Thread.sleep(3000);
        Object object = rabbitTemplate.receiveAndConvert(QUEUE_NAME); // getting exception here
          System.out.println("Received: "+object);
        result = "success";
    }catch(Exception ex){
        ex.printStackTrace();
    }

    return result;
}
}

UPDATED RabbitConfig.java

@Configuration
@Profile("cloud")
public class RabbitConfig extends AbstractCloudConfig {

private static final String QUEUE_NAME = "testqueue";

@Bean
public RabbitTemplate rabbitTemplate(){
    CachingConnectionFactory cachingConnectionFactory = (CachingConnectionFactory)(connectionFactory().rabbitConnectionFactory());
    System.out.println("------------------------ Rabbit mq template: " + cachingConnectionFactory.getCacheMode());
    System.out.println("------------------------ cachingConnectionFactory.toString(): " + cachingConnectionFactory.toString());
    cachingConnectionFactory.setCacheMode(CachingConnectionFactory.CacheMode.CHANNEL);
    cachingConnectionFactory.setChannelCacheSize(25);
    System.out.println("----------after set-------------- Rabbit mq template: " + cachingConnectionFactory.getCacheMode());
    System.out.println("------------------------ cachingConnectionFactory.toString(): " + cachingConnectionFactory.getChannelCacheSize());
    RabbitTemplate rabbitTemplate = new RabbitTemplate(cachingConnectionFactory);

    System.out.println("------------------------ Rabbit mq template: " + rabbitTemplate);
    return rabbitTemplate;
}

@Bean
public Queue myQueue() {
    System.out.println("--------------@@---------- creating queue: ");
    final boolean isDurable = true;
    final boolean isExclusive = false;
    final boolean autoDelete = false;
    return new Queue(QUEUE_NAME, isDurable, isExclusive, autoDelete);
}


}

I tried searching this on the internet but still i am not able to resolve the issue, Struggling with this exception for long, any help is appreciated.

Got the solution!

CachingConnectionFactory cachingConnectionFactory = new CachingConnectionFactory();
    cachingConnectionFactory.setUsername("");
    cachingConnectionFactory.setPassword("");
    cachingConnectionFactory.setVirtualHost("");
    cachingConnectionFactory.setHost("");
    cachingConnectionFactory.setPort(1);
    cachingConnectionFactory.setRequestedHeartBeat(30);
    cachingConnectionFactory.setConnectionTimeout(30000);

    RabbitAdmin admin = new RabbitAdmin(cachingConnectionFactory());
    Queue queue = new Queue(QUEUE_NAME);
    admin.declareQueue(queue);
    TopicExchange exchange = new TopicExchange(EXCHANGE_NAME);
    admin.declareExchange(exchange);   admin.declareBinding(BindingBuilder.bind(queue).to(exchange).with(QUEUE_NAME));
RabbitTemplate template = new RabbitTemplate(cachingConnectionFactory());

Answer 1

You need a RabbitAdmin @Bean to declare the queues/bindings - it automatically finds beans of those types and declares them on the broker when the connection is established.

If you use Spring Boot, it will automatically register a template and admin for you.