private void addMessageIDInHeader(final Message msg) throws Exception {
// We concatenate the old message id as a header in the message
// This allows the target to then use this as the JMSCorrelationID of any response message
// thus enabling a distributed request-response pattern.
// Each bridge (if there are more than one) in the chain can concatenate the message id
// So in the case of multiple bridges having routed the message this can be used in a multi-hop
// distributed request/response
if (JMSBridgeImpl.trace) {
HornetQJMSServerLogger.LOGGER.trace("Adding old message id in Message header");
}
JMSBridgeImpl.copyProperties(msg);
String val = null;
val = msg.getStringProperty(HornetQJMSConstants.JBOSS_MESSAGING_BRIDGE_MESSAGE_ID_LIST);
if (val == null) {
val = msg.getJMSMessageID();
} else {
StringBuffer sb = new StringBuffer(val);
sb.append(",").append(msg.getJMSMessageID());
val = sb.toString();
}
msg.setStringProperty(HornetQJMSConstants.JBOSS_MESSAGING_BRIDGE_MESSAGE_ID_LIST, val);
}
