Examples of org.springframework.amqp.rabbit.core.RabbitTemplate

Package org.springframework.amqp.rabbit.core

Examples of org.springframework.amqp.rabbit.core.RabbitTemplate

org.springframework.amqp.rabbit.core.RabbitTemplate

Helper class that simplifies synchronous RabbitMQ access (sending and receiving messages).

The default settings are for non-transactional messaging, which reduces the amount of data exchanged with the broker. To use a new transaction for every send or receive set the {@link #setChannelTransacted(boolean) channelTransacted}flag. To extend the transaction over multiple invocations (more efficient), you can use a Spring transaction to bracket the calls (with channelTransacted=true as well).

The only mandatory property is the {@link #setConnectionFactory(ConnectionFactory) ConnectionFactory}. There are strategies available for converting messages to and from Java objects ( {@link #setMessageConverter(MessageConverter) MessageConverter}) and for converting message headers (known as message properties in AMQP, see {@link #setMessagePropertiesConverter(MessagePropertiesConverter) MessagePropertiesConverter}). The defaults probably do something sensible for typical use cases, as long as the message content-type is set appropriately.

The "send" methods all have overloaded versions that allow you to explicitly target an exchange and a routing key, or you can set default values to be used in all send operations. The plain "receive" methods allow you to explicitly target a queue to receive from, or you can set a default value for the template that applies to all explicit receives. The convenience methods for send and receive use the sender defaults if no exchange or routing key is specified, but they always use a temporary queue for the receive leg, so the default queue is ignored.
@author Mark Pollack @author Mark Fisher @author Dave Syer @author Gary Russell @author Artem Bilan @since 1.0

            }
        }
        
        if(this.amqpTemplate == null) {
            //Attempt to construct an AMQP template
            this.amqpTemplate = new RabbitTemplate(this.connectionFactory);
            LOG.info("Created new AMQP Template");
        }
        
        return this.amqpTemplate;
    }

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        }
        
        if(this.amqpTemplate == null || this.amqpTemplate.isEmpty()) {
            //Attempt to construct an AMQP template
            this.amqpTemplate = new HashMap<String, AmqpTemplate>();
            this.amqpTemplate.put(DEFAULT_CONNECTION, new RabbitTemplate(this.connectionFactory.values().iterator().next()));
            LOG.info("Created new AMQP Template");
        }
        
        return this.amqpTemplate;
    }

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        public RabbitMQMessageListener(SpringAMQPEndpoint endpoint) {
            this.listenerContainer = new SimpleMessageListenerContainer();
            this.listenerContainer.setTaskExecutor(new SpringAMQPExecutor(endpoint));


            RabbitTemplate template = (RabbitTemplate) endpoint.getAmqpTemplate();
            if(template != null) {
                this.msgConverter = template.getMessageConverter();
                this.listenerContainer.setConnectionFactory(template.getConnectionFactory());
            } else {
                LOG.error("No AMQP Template found! Cannot initialize message conversion or connections!");
            }


            this.listenerContainer.setQueueNames(endpoint.getQueueName());

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        public RabbitMQMessageListener(SpringAMQPEndpoint endpoint) {
            this.listenerContainer = new SimpleMessageListenerContainer();
            this.listenerContainer.setTaskExecutor(new SpringAMQPExecutor(endpoint));


            RabbitTemplate template = (RabbitTemplate) endpoint.getAmqpTemplate();
            if(template != null) {
                this.msgConverter = template.getMessageConverter();
                this.listenerContainer.setConnectionFactory(template.getConnectionFactory());
            } else {
                LOG.error("No AMQP Template found! Cannot initialize message conversion or connections!");
            }


            this.listenerContainer.setQueueNames(endpoint.getQueueName());

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  @Bean
  public RabbitService rabbitService() {
    return new RabbitService(vertx(), rabbitConnectionFactory(), 
        new RabbitAdmin(rabbitConnectionFactory()), 
        new RabbitTemplate(rabbitConnectionFactory()),
        rabbitTaskExecutor());
  }

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    }
    
    @Override
    protected CamelContext createCamelContext() throws Exception {
        CachingConnectionFactory factory = new CachingConnectionFactory();
        RabbitTemplate amqpTemplate = new RabbitTemplate(factory);
        SpringAMQPComponent amqpComponent = new SpringAMQPComponent(factory);
        amqpComponent.setAmqpTemplate(amqpTemplate);
        
        CamelContext camelContext = super.createCamelContext();
        camelContext.addComponent("spring-amqp", amqpComponent);

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    }


    @Override
    protected CamelContext createCamelContext() throws Exception {
        CachingConnectionFactory factory = new CachingConnectionFactory();
        RabbitTemplate amqpTemplate = new RabbitTemplate(factory);
        //The JSON converter stresses marshalling more than the default converter
        amqpTemplate.setMessageConverter(new JsonMessageConverter());
        SpringAMQPComponent amqpComponent = new SpringAMQPComponent(factory);
        amqpComponent.setAmqpTemplate(amqpTemplate);
        
        CamelContext camelContext = super.createCamelContext();
        camelContext.addComponent("spring-amqp", amqpComponent);

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        public RabbitMQMessageListener(SpringAMQPEndpoint endpoint) {
            this.listenerContainer = new SimpleMessageListenerContainer();
            this.listenerContainer.setTaskExecutor(new SpringAMQPExecutor(endpoint));


            RabbitTemplate template = (RabbitTemplate) endpoint.getAmqpTemplate();
            if(template != null) {
                this.msgConverter = template.getMessageConverter();
                this.listenerContainer.setConnectionFactory(template.getConnectionFactory());
            } else {
                LOG.error("No AMQP Template found! Cannot initialize message conversion or connections!");
            }


            this.listenerContainer.setQueueNames(endpoint.getQueueName());

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    return Collections.singletonMap("module.router.producer.deliveryMode", "NON_PERSISTENT");
  }


  @Override
  protected void verifyOnDemandQueues(MessageChannel y3, MessageChannel z3) {
    RabbitTemplate template = new RabbitTemplate(rabbitAvailableRule.getResource());
    Object y = template.receiveAndConvert("xdbus.queue:y");
    assertNotNull(y);
    assertEquals("y", y);
    Object z = template.receiveAndConvert("xdbus.queue:z");
    assertNotNull(z);
    assertEquals("z", z);
  }

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      }


    });
    bus.bindConsumer("dlqtest", moduleInputChannel, properties);


    RabbitTemplate template = new RabbitTemplate(this.rabbitAvailableRule.getResource());
    template.convertAndSend("", "xdbustest.dlqtest", "foo");


    int n = 0;
    while (n++ < 100) {
      Object deadLetter = template.receiveAndConvert("xdbustest.dlqtest.dlq");
      if (deadLetter != null) {
        assertEquals("foo", deadLetter);
        break;
      }
      Thread.sleep(100);

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