/**
* @param guid
* @param data
* @throws IOException
*/
public void put(int guid, byte[] data) throws IOException {
Finger succ = locateSuccessor(guid);
if (succ != null) {
ChordMessageInterface succChord = rmiChord(succ.getIp(), succ.getPort());
succChord.write(
guid, data); // Writes bytes from the specified byte array to this file output stream
}
// TODO: Store data in the closest node.
// before calling this method you need to find the node using
// locateSuccessor.
}
/**
* @param guid
* @throws IOException
*/
public void remove(int guid) throws IOException {
Finger succ = locateSuccessor(guid);
if (succ != null) {
ChordMessageInterface succChord = rmiChord(succ.getIp(), succ.getPort());
succChord.delete(
guid); // Writes bytes from the specified byte array to this file output stream
}
// TODO: remove the file guid.
// before calling this method you need to find the node using
// locateSuccessor.
}
/**
* @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;
}
/**
* @throws RemoteException
* @throws UnknownHostException
*/
public void stabilize() throws RemoteException, UnknownHostException {
ChordMessageInterface succ = rmiChord(successor.getIp(), successor.getPort());
Finger x = succ.getPredecessor();
if (ino(x.getId(), i, successor.getId())) {
successor = x;
}
InetAddress ip = InetAddress.getLocalHost();
succ = rmiChord(successor.getIp(), successor.getPort());
succ.notify(new Finger(ip.getHostAddress(), port, i));
}
/**
* @param j
* @throws RemoteException
*/
public void notify(Finger j) throws RemoteException {
if (predecessor == null || in(j.getId(), predecessor.getId(), i)) {
// transfer keys in the range [j,i) to j
predecessor = j;
}
}