org.apache.camel.impl.DefaultMessage Java Examples

/**
 * Converts from a Camel message to a HzMq message. The headers are simply
 * copied unmodified. The body is mapped by type:
 * <ul>
 * <li>If the content type is text/plain, the body is set as a String</li>
 * <li>all others: the body is set as a byte[] (or null)</li>
 * </ul>
 *
 * @param mqMsg the HzMq message to convert
 *
 * @return the new Camel message
 */
@Override
public Message toCamelMessage(HazelcastMQMessage mqMsg) {
  DefaultMessage camelMsg = new DefaultMessage();

  camelMsg.setHeaders((Map) mqMsg.getHeaders().getHeaderMap());

  if (mqMsg.getContentType() != null && mqMsg.getContentType().equals(
      "text/plain")) {
    camelMsg.setBody(mqMsg.getBodyAsString());
  }
  else {
    camelMsg.setBody(mqMsg.getBody());
  }

  return camelMsg;
}
 

/**
 * Match the given NodeType and properties against instance data from remote OpenTOSCA Containers. The matching is
 * successful if a NodeTemplateInstance with the same NodeType and the same values for the properties is found in
 * their instance data. The method sends a request via MQTT to all subscribed OpenTOSCA Containers. Afterwards, it
 * waits for a reply which contains the host name of the OpenTOSCA Container that found matching instance data. If
 * it receives a reply in time, it returns the host name. Otherwise, it returns null.
 *
 * @param infrastructureNodeType   the NodeType of the NodeTemplate which has to be matched
 * @param infrastructureProperties the set of properties of the NodeTemplate which has to be matched
 * @return the host name of the OpenTOSCA Container which found a matching NodeTemplateInstance if one is found,
 * <tt>null</tt> otherwise.
 */
private String performRemoteInstanceDataMatching(final QName infrastructureNodeType,
                                                 final Map<String, String> infrastructureProperties) {

    LOG.debug("Creating collaboration message for remote instance data matching...");

    // transform infrastructureProperties for the message body
    final KeyValueMap properties = new KeyValueMap();
    final List<KeyValueType> propertyList = properties.getKeyValuePair();
    infrastructureProperties.entrySet().forEach((entry) -> propertyList.add(new KeyValueType(entry.getKey(),
        entry.getValue())));

    // create collaboration message
    final BodyType content = new BodyType(new InstanceDataMatchingRequest(infrastructureNodeType, properties));
    final CollaborationMessage collaborationMessage = new CollaborationMessage(new KeyValueMap(), content);

    // perform remote instance data matching and wait 10s for a response
    final Exchange response = sender.sendRequestToRemoteContainer(new DefaultMessage(),
        RemoteOperations.INVOKE_INSTANCE_DATA_MATCHING,
        collaborationMessage, 10000);

    if (Objects.nonNull(response)) {
        LOG.debug("Received a response in time.");

        // read the deployment location from the reply
        return response.getIn().getHeader(MBHeader.DEPLOYMENTLOCATION_STRING.toString(), String.class);
    } else {
        LOG.debug("No response received within the timeout interval.");
        return null;
    }
}
 

@Override
public void process(Exchange exchange) throws Exception {

    DefaultMessage message = new DefaultMessage();
    message.setBody("current time: " + new Date());

    exchange.setOut(message);

}
 

@Override
public void process(Exchange exchange) throws Exception {

    DefaultMessage message = new DefaultMessage();
    message.setBody("current time: " + new Date());

    exchange.setOut(message);

}