/**
* Token processing & sending
*
* @param mess - message
*/
private void processToken(Message mess) throws RemoteException, NotBoundException {
Message outMess = new Message();
outMess.setType(MessageType.TOKEN);
this.log.logNode("Received message -> " + mess.toString(), clock, this.nodeInfo.getID());
if (mess.getColor() == Color.BLACK) {
// black token
if (this.nodeInfo.getID() == 0) {
// primary process
this.log.logNode("BLACK node has been received.", clock, 0);
this.startTokenSent = false;
} else {
outMess.setColor(Color.BLACK);
}
} else {
// white token
if (this.nodeInfo.getID() == 0) {
// primary process --> received white node;all stops working
this.log.logNode("Work has been terminated :).", clock, 0);
sendTerminatedMessage();
this.init();
} else {
// i am not the primary process
if (this.myState == NodeState.PASSIVE) {
// I don't have any work
outMess.setColor(myColor);
} else {
// I have work
outMess.setColor(Color.BLACK);
}
}
}
// get node count and send token if node count is bigger than one
if (this.directory.getNodeCount() == 1) return;
// send data
if (this.nodeInfo.getID() != 0) {
int neighbourID = getNeighbourID();
this.sendMessageToProcess(outMess, neighbourID);
}
// reset my color
this.myColor = Color.WHITE;
}
/** This method sends start token */
private void sendStartToken() throws RemoteException, NotBoundException {
if (this.directory.getNodeCount() > 1) {
int neighbourID = this.getNeighbourID();
Message mess = new Message();
mess.setType(MessageType.TOKEN);
mess.setColor(Color.WHITE);
this.sendMessageToProcess(mess, neighbourID);
this.log.logNode("Sending TOKEN.", clock, this.nodeInfo.getID());
}
}
/**
* Inserts message into queue
*
* @param message - message to insert
* @throws RemoteException
*/
@Override
public synchronized void putMessage(Message message) throws RemoteException {
Message messageTmp = new Message();
messageTmp.setClock(message.getClock());
messageTmp.setColor(message.getColor());
messageTmp.setPayload(message.getPayload());
messageTmp.setType(message.getType());
this.messageQueue.add(message);
}