// Tell master the server freezed
public static bool Freeze(string url)
{
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm), _master_url + "LibraryComm");
return(master.freeze(url));
}
public static bool Status()
{
ILibraryComm master = (ILibraryComm)Activator.GetObject(typeof(ILibraryComm), _master_url + "LibraryComm");
master.status();
return(true);
}
// Tell master the server failed
public static bool Fail(string url)
{
ILibraryComm master = (ILibraryComm)Activator.GetObject(typeof(ILibraryComm), _master_url + "LibraryComm");
master.fail(url);
return(true);
}
internal void updateCache()
{
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm),
PadiDstm.Master_Url + "LibraryComm");
_availableServers = master.updateCache();
}
// Tell master the master to recover the server
public static bool Recover(string url)
{
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm), _master_url + "LibraryComm");
bool success = master.recover(url);
return(success);
}
internal Transaction(TcpChannel channel)
{
this.channel = channel;
// aquire an unique transaction ID
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm),
PadiDstm.Master_Url + "LibraryComm");
_txID = master.getTxID();
// placeholder debug message
Console.WriteLine("Started new transaction with id : " + _txID);
// set the state of the transaction to ACTIVE
State = TransactionState.ACTIVE;
}
// Tell Master to kill the server
internal void onTimeFail(object source, ElapsedEventArgs e, string server_url)
{
Console.WriteLine("Server " + server_url + " Died!");
_timer.Enabled = false;
_timer.AutoReset = false;
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm), PadiDstm.Master_Url + "LibraryComm");
failed_lock = true;
master.fail(server_url);
State = TransactionState.ABORTED;
PadiDstm.Servers.updateCache();
failed_lock = false;
}
// Manage the failure, the Master alters the sucessors of this class
internal static void manageFailedServer(string failed_url)
{
Console.WriteLine("INSIDE CATCH IN DATASTORE!!!");
string sucessor_url;
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm), Datastore.MASTER + "LibraryComm");
sucessor_url = master.setFailedServer(failed_url);
// Server failed
if (sucessor_url == null)
{
Console.WriteLine("ERROR: THERE ARE NO SERVERS THAT HAVE THE REQUESTED PADINT");
}
}
// Returns the server url that has the requested UID objects (Sucessor)
public static string manageFailedServer(string failed_url, int serverNumber)
{
string sucessor_url;
ILibraryComm master = (ILibraryComm)Activator.GetObject(
typeof(ILibraryComm), _master_url + "LibraryComm");
sucessor_url = master.setFailedServer(failed_url);
// Server failed
if (sucessor_url == null)
{
Console.WriteLine("ERROR: THERE ARE NO SERVERS THAT HAVE THE REQUESTED PADINT");
_transaction.State = TransactionState.ABORTED;
}
Servers.AvailableServers[serverNumber] = sucessor_url;
return(sucessor_url);
}
