/**
* @param key
* @return
* @throws RemoteException
*/
public Finger locateSuccessor(int key) throws RemoteException {
if (key == i) {
throw new IllegalArgumentException("Key must be distinct that " + i);
}
if (successor != null && successor.getId() != i) {
if (in(key, i, successor.getId())) {
return successor;
}
Finger jguid = closestPrecedingNode(key);
ChordMessageInterface j = rmiChord(jguid.getIp(), jguid.getPort());
if (j == null) {
return null;
}
return j.locateSuccessor(key);
}
return successor;
}
/**
* @param ip
* @param port
* @throws RemoteException
*/
public void joinRing(String ip, int port) throws RemoteException {
ChordMessageInterface j = rmiChord(ip, port);
predecessor = null;
successor = j.locateSuccessor(i);
}