//Get endpoints
public string GetPrimaryEndpoint(int uid)
{
ServerPair pair = lookupTable.GetServerPair(uid);
if (pair == null)
{
return(null);
}
return(pair.GetPrimary());
}
public TableRow GetRowGivenPrimary(String primaryUrl)
{
foreach (TableRow row in lookupTable)
{
ServerPair pair = row.GetServerPair();
if (primaryUrl.Equals(pair.GetPrimary()))
{
return(row); //DEVIAMOS LANCAR EXCEPCAO CASO NAO EXISTA O MAIN SERVER.
}
}
return(null);
}
//Check if given string correspond to replica(false) or main server(true)
public bool IsPrimary(String url)
{
foreach (TableRow row in lookupTable)
{
ServerPair pair = row.GetServerPair();
if (url.Equals(pair.GetPrimary()))
{
return(true);
}
//else if (url.Equals(pair.GetReplica()))
// return false;
}
//DEVERIA SER LANCADA UMA EXCEPCAO POR NAO EXISTIR!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
return(false);
}
public bool RemoveServer(string url)
{
Console.WriteLine("RemoveServer");
bool isPrimary = lookupTable.IsPrimary(url);
Console.WriteLine("isPrimary: " + isPrimary);
////Falhou deve remover server e replica
//List<String> replicatedServers = serverReplicasTable.getReplicasFromServer(url);
//if (replicatedServers.Count != 0)
//{
// //NOTIFICAR DA ALTERACAO
// foreach (String replicatedServer in replicatedServers)
// {
// IServer server = (IServer)Activator.GetObject(typeof(IServer), replicatedServer);
// //AddTIDToPendingTable(string url, ulong tid, int startRange, int endRange)
// AddTIDToPendingTableAsyncDelegate remoteDel = new AddTIDToPendingTableAsyncDelegate(server.AddTIDToPendingTable);
// UIDRange primaryRange = lookupTable.GetRowGivenPrimary(replicatedServer).GetUIDRange();
// remoteDel.BeginInvoke(newReplica, server.GetMaxTID(), primaryRange.GetRangeStart(), primaryRange.GetRangeEnd(), null, null);
// }
//}
//IServer newPrimaryServer = (IServer)Activator.GetObject(typeof(IServer), newPrimary);
//AddTIDToPendingTableAsyncDelegate primaryServerDel = new AddTIDToPendingTableAsyncDelegate(newPrimaryServer.AddTIDToPendingTable);
//UIDRange newPrimaryRange = lookupTable.GetRowGivenPrimary(newPrimary).GetUIDRange();
//primaryServerDel.BeginInvoke(newReplica, newPrimaryServer.GetMaxTID(), newPrimaryRange.GetRangeStart(), newPrimaryRange.GetRangeEnd(), null, null);
//Console.WriteLine("Removeu! ");
serverReplicasTable.removeServerAndReplicas(url);
String newReplica = serverReplicasTable.getReplica();
Console.WriteLine("newReplica: " + newReplica);
String newPrimary = null;
//if the failed server is a primary server we request another replica and set replica as primary
if (isPrimary)
{
lookupTable.SwapPrimaryReplica(url, newReplica);
Console.WriteLine("swap.");
newPrimary = lookupTable.GetRowGivenReplica(newReplica).GetServerPair().GetReplica();
Console.WriteLine("newPrimary");
//if the failed server is a replica we get a new replica
}
else
{
lookupTable.SetNewReplica(url, newReplica);
//Console.WriteLine("setNewReplica.");
TableRow r = lookupTable.GetRowGivenReplica(newReplica);
Console.WriteLine(r.ToString());
ServerPair sp = r.GetServerPair();
newPrimary = sp.GetPrimary();
Console.WriteLine("newPrimary");
//LANCAR EXCEPCAO CASO HAJA FALHA
}
return(true);
//throw new NotImplementedException();
}
