public ChordNode(string myAddress, int myPort)
{
Predecessor = null;
keyTable = new Dictionary<BigInteger, List<string>>();
fingers = new NodeInfo[chordKeyLength];
successors = ArrayList.Synchronized(new ArrayList());
myData = new NodeInfo(myAddress, myPort, new BigInteger(SHA(myAddress + ":" + myPort)));
byte[] max = new byte[20];
for (int i = 0; i < 20; i++)
max[i] = 255;
maxValue = new BigInteger(max);
for(int i = 0; i < MAX_SUCESSORS; i++)
successors.Add(myData);
}
public ArrayList Notify(NodeInfo pred)
{
ChordModule.Instance.NodeInstance.Notify(pred);
return ChordModule.Instance.NodeInstance.Successors;
}
public ChordNode(string myAddress, int myPort, string knownChordNodeAddress, int knownChordNodePort)
{
Predecessor = null;
fingers = new NodeInfo[chordKeyLength];
successors = ArrayList.Synchronized(new ArrayList());
myData = new NodeInfo(myAddress, myPort, new BigInteger(SHA(myAddress + ":" + myPort)));
byte[] max = new byte[20];
for (int i = 0; i < 20; i++)
max[i] = 255;
maxValue = new BigInteger(max);
NodeInfo ni = Join(knownChordNodeAddress, knownChordNodePort);
if (ni != null)
{
//In the beginning this node should only know it's sucessor.
//So we initialize them all as the same one.
for (int i = 0; i < MAX_SUCESSORS; i++)
successors.Add(ni);
ChordNodeProxy obj = (ChordNodeProxy)Activator.GetObject(typeof(ChordNodeProxy), ni.Address + ":" + ni.Port + "/ChordServices");
if (obj != null)
{
try
{
keyTable = obj.CopyKeys(myData.ID);
}
catch (IOException) { }
catch (SocketException) { }
}
}
else
{
//known node is dead
throw new ServiceUnavailableException("Known chord node is dead.");
}
}
public void Notify(NodeInfo pred)
{
if (((NodeInfo)successors[0]).Equals(myData))
successors[0] = pred;
if (Predecessor == null ||
TestKey(Predecessor.ID,pred.ID,myData.ID))
Predecessor = pred;
}
public ArrayList Notify(NodeInfo pred)
{
ChordModule.Instance.NodeInstance.Notify(pred);
return(ChordModule.Instance.NodeInstance.Successors);
}
