/**
* Dispatches a message to the appropriate receiver.
*
* <p>It will buffer the message under the following conditions: 1) The MessageReceiver is not yet
* registered. 2) The MessageReceiver is a PastryAppl, and localNode.isReady() == false
*
* @param msg the message.
* @return true if message could be dispatched, false otherwise.
*/
public boolean dispatchMessage(Message msg) {
if (msg.getDestination() == 0) {
Logger logger =
localNode.getEnvironment().getLogManager().getLogger(MessageDispatch.class, null);
if (logger.level <= Logger.WARNING)
logger.logException(
"Message " + msg + "," + msg.getClass().getName() + " has no destination.",
new Exception("Stack Trace"));
return false;
}
// NOTE: There is no safety issue with calling localNode.isReady() because this is on the
// PastryThread, and the only way to set a node ready is also on the ready thread.
PastryAppl mr = (PastryAppl) addressBook.get(Integer.valueOf(msg.getDestination()));
if (mr == null) {
if ((logger.level <= Logger.FINE) || (localNode.isReady() && (logger.level <= Logger.INFO))) {
logger.log(
"Dropping message "
+ msg
+ " because the application address "
+ msg.getDestination()
+ " is unknown.");
}
return false;
} else {
mr.receiveMessage(msg);
return true;
}
}
public PastryAppl getDestination(Message msg) {
return getDestinationByAddress(msg.getDestination());
}