public void addServerToRKM(ServerInfo serverInfo)
{
String serviceAddress = serverInfo.Channel + "://" + serverInfo.ServerAddress + ":" + serverInfo.ServerPort + "/" + serverInfo.ServiceName;
IServer svc = (IServer)Activator.GetObject(
typeof(IServer),
serviceAddress);
Console.WriteLine("New server added to RKM: {0}", serviceAddress);
//if we don't have servers in the ring we don't need to set the last server pointer to the new one
if (m_ring.Count > 0)
{
ServerInfo lastServerInfo;
IServer lastServerProxy;
bool notException = false;
do
{
try
{
lastServerInfo = m_ring.Last<ServerInfo>();
serviceAddress = lastServerInfo.Channel + "://" + lastServerInfo.ServerAddress + ":" + lastServerInfo.ServerPort + "/" + lastServerInfo.ServiceName;
lastServerProxy = (IServer)Activator.GetObject(typeof(IServer), serviceAddress);
lastServerProxy.setNextRingServer(serverInfo);
notException = false;
}catch(Exception)
{
lock (lockThis)
{
m_ring.Remove(m_ring.Last<ServerInfo>());
}
notException = true;
}
} while (notException && m_ring.Count > 0);
}
lock (lockThis)
{
m_ring.Add(serverInfo);
}
//the new server in the ring will have it's next server pointed to the first in the rings list of servers
svc.setNextRingServer(m_ring.First<ServerInfo>());
printRingConfiguration();
}
public void setNextRingServer(ServerInfo nextServer)
{
m_nextServer = nextServer;
Console.WriteLine("Next ring server: {0}:{1}", nextServer.ServerAddress, nextServer.ServerPort);
}
public void removeServerFromRKM(ServerInfo oldServer)
{
lock (lockThis)
{
m_ring.Remove(oldServer);
reconstructRing();
}
}
public void disconnectFromServer(ServerInfo server)
{
try
{
lock (lockThis)
{
m_ring[m_ring.IndexOf(server)].ClientCount--;
}
}catch
{
removeServerFromRKM(server);
}
}
public ServerInfo connectToServer(ServerInfo oldServer = null)
{
//if oldServer is different of null means that that server is down.
if(oldServer != null)
{
removeServerFromRKM(oldServer);
printRingConfiguration();
}
if (m_ring.Count <= 0)
return null;
//connect to the server with less clients
int serverPos = getServerWithLessClients();
lock (lockThis)
{
m_ring[serverPos].ClientCount++;
return m_ring[serverPos];
}
}
public bool Equals(ServerInfo si)
{
// If parameter is null return false:
if ((object)si == null)
{
return false;
}
// Return true if the fields match:
return (ServerAddress == si.ServerAddress && ServerPort == si.ServerPort);
}
