Examples of org.springframework.amqp.core.Message

org.springframework.amqp.core.Message
The 0-8 and 0-9-1 AMQP specifications do not define an Message class or interface. Instead, when performing an operation such as basicPublish the content is passed as a byte-array argument and additional properties are passed in as separate arguments. Spring AMQP defines a Message class as part of a more general AMQP domain model representation. The purpose of the Message class is to simply encapsulate the body and properties within a single instance so that the rest of the AMQP API can in turn be simpler. @author Mark Pollack @author Mark Fisher @author Oleg Zhurakousky @author Dave Syer @author Gary Russell

              Envelope envelope, AMQP.BasicProperties properties,
              byte[] body) throws IOException {
            MessageProperties messageProperties = messagePropertiesConverter
                .toMessageProperties(properties, envelope,
                    encoding);
            Message reply = new Message(body, messageProperties);
            if (logger.isTraceEnabled()) {
              logger.trace("Message received " + reply);
            }
            try {
              replyHandoff.put(reply);
            } catch (InterruptedException e) {
              Thread.currentThread().interrupt();
            }
          }
        };
        channel.basicConsume(replyTo, true, consumerTag, true, true,
            null, consumer);
        doSend(channel, exchange, routingKey, message, null);
        Message reply = (replyTimeout < 0) ? replyHandoff.take()
            : replyHandoff
                .poll(replyTimeout, TimeUnit.MILLISECONDS);
        channel.basicCancel(consumerTag);
        return reply;
      }

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          logger.debug("Sending message with tag " + messageTag);
        }
        doSend(channel, exchange, routingKey, message, null);
        LinkedBlockingQueue<Message> replyHandoff = pendingReply
            .getQueue();
        Message reply = (replyTimeout < 0) ? replyHandoff.take()
            : replyHandoff
                .poll(replyTimeout, TimeUnit.MILLISECONDS);
        RabbitTemplate.this.replyHolder.remove(messageTag);
        return reply;
      }

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  private Message buildMessageFromResponse(GetResponse response) {
    MessageProperties messageProps = this.messagePropertiesConverter
        .toMessageProperties(response.getProps(),
            response.getEnvelope(), this.encoding);
    messageProps.setMessageCount(response.getMessageCount());
    return new Message(response.getBody(), messageProps);
  }

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    } else {
      properties.getHeaders().remove(
          PublisherCallbackChannel.RETURN_CORRELATION);
      MessageProperties messageProperties = messagePropertiesConverter
          .toMessageProperties(properties, null, this.encoding);
      Message returnedMessage = new Message(body, messageProperties);
      this.returnCallback.returnedMessage(returnedMessage, replyCode,
          replyText, exchange, routingKey);
    }
  }

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      if (numRequest > 0) {
        log.debug("Retry {} sending message: {}", numRequest, request);
      }


      Message response = template.sendAndReceive(exchange, routingKey,
          new Message(request.toString().getBytes(),
              messageProperties));


      if (response != null) {
        String responseAsString = new String(response.getBody());
        log.debug("<-Res " + responseAsString.trim());
        return responseAsString;
      }
    }

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    }


    log.debug("Not-> Exchange:'" + exchange + "' RoutingKey:'" + routingKey
        + "' " + message);


    template.send(exchange, routingKey, new Message(message.getBytes(),
        new MessageProperties()));
  }

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public class SpringAMQPHeaderTest {
    @Test
    public void fromBasicProperties() throws Exception {
        MessageProperties properties = new MessageProperties();
        properties.setHeader("NotSecret", "Popcorn");
        org.springframework.amqp.core.Message message = new Message(new byte[]{}, properties);
        message.getMessageProperties().setPriority(1);
        message.getMessageProperties().setReplyTo("BuzzSaw");
        
        SpringAMQPMessage camelMessage = SpringAMQPHeader.setBasicPropertiesToHeaders(new SpringAMQPMessage(), message);
        Assert.assertNull(camelMessage.getHeader("NotSecret"));
        Assert.assertEquals(1, camelMessage.getHeader(SpringAMQPHeader.PRIORITY));
        Assert.assertEquals("BuzzSaw", camelMessage.getHeader(SpringAMQPHeader.REPLY_TO));

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        camelMessage.setHeader(SpringAMQPHeader.REPLY_TO, "BuzzSaw");
        
        Exchange exchange = new DefaultExchange(new DefaultCamelContext());
        exchange.setIn(camelMessage);
        
        Message message = new Message(new byte[]{}, new MessageProperties());
        message = SpringAMQPHeader.setBasicPropertiesFromHeaders(message, camelMessage.getHeaders());
        Assert.assertNull(message.getMessageProperties().getHeaders().get("Secret"));
        Assert.assertEquals(Integer.valueOf(1), message.getMessageProperties().getPriority());
        Assert.assertEquals("BuzzSaw", message.getMessageProperties().getReplyTo());
    }

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    @Test
    public void copyAMQPHeaders() throws Exception {
        MessageProperties properties = new MessageProperties();
        properties.setHeader("NotSecret", "Popcorn");
        org.springframework.amqp.core.Message message = new Message(new byte[]{}, properties);
        message.getMessageProperties().setReplyTo("BuzzSaw");
        
        SpringAMQPMessage camelMessage = SpringAMQPHeader.copyHeaders(new SpringAMQPMessage(), message.getMessageProperties().getHeaders());
        Assert.assertEquals("Popcorn", camelMessage.getHeader("NotSecret"));
        Assert.assertNull(camelMessage.getHeader(SpringAMQPHeader.REPLY_TO));
    }

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        camelMessage.setHeader(SpringAMQPHeader.REPLY_TO, "BuzzSaw");
        
        Exchange exchange = new DefaultExchange(new DefaultCamelContext());
        exchange.setIn(camelMessage);
        
        Message message = new Message(new byte[]{}, new MessageProperties());
        message = SpringAMQPHeader.copyHeaders(message, camelMessage.getHeaders());
        Assert.assertEquals("My Secret", message.getMessageProperties().getHeaders().get("Secret"));
        Assert.assertNull(message.getMessageProperties().getReplyTo());
    }

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