/** * @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 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; }
/** * @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); }