public void MulticastMsg(ViewMsg msg)
{
msg.Source = ThisMetaserverId;
msg.Status = GetStatus(ThisMetaserverId);
ViewElementsMutex.WaitOne( );
//Contact other servers
for (int id = 0; id < ViewElements.Length; id++)
{
if (id == ThisMetaserverId)
{
continue;
}
// if ( GetStatus( id ) == ServerStatus.Off )
// continue;
msg.Destination = id;
log.Debug(DateTime.Now.Ticks + " [M] Multicast View: " + msg.Status);
IMetaToMeta server = MetadataServer.ConnectToMetaserver(id);
BullyDel invokeDel = new BullyDel(server.BullyRequestsRetrival);
AsyncCallback callback = new AsyncCallback(BullyResponse);
try
{
Console.WriteLine("Multicast: " + msg + " to " + msg.Destination);
invokeDel.BeginInvoke(msg, callback, null);
}
catch (SocketException)
{
UpdateViewServerState(ServerStatus.Off, id, null);
}
}
ViewElementsMutex.ReleaseMutex( );
}
/// <summary>
/// Deunnciar que existe um servidor que falhou
/// </summary>
/// <param name="betrayedServer"></param>
/// <param name="knownFrom">Quem o avisou</param>
public void ServerBetray(int betrayedServer, int knownFrom)
{
//Anunciar aos restantes da view que este falhou.
ViewMsg msg = new ViewMsg(ViewMsgType.ServerBetray, GetStatus(ThisMetaserverId), ThisMetaserverId, MetadataServer.GetQueueStateVector( ));
msg.Source = ThisMetaserverId;
msg.Status = GetStatus(ThisMetaserverId);
msg.Betrayed = betrayedServer;
ViewElementsMutex.WaitOne( );
//Contact other servers
for (int id = 0; id < ViewElements.Length; id++)
{
if (id == ThisMetaserverId || id == knownFrom)
{
continue;
}
if (ViewElements[id] == ServerStatus.Off)
{
Console.WriteLine("Already betrayed" + id);
continue;
}
msg.Destination = id;
try
{
Console.WriteLine("Betray: " + betrayedServer + " to " + msg.Destination);
MetadataServer.ConnectToMetaserver(id).BullyRequestsRetrival(msg);
}
catch (SocketException) {
UpdateViewServerState(ServerStatus.Off, id, null);
if (id != betrayedServer && !(ViewElements[id].Equals(ServerStatus.Off)))
{
ServerBetray(id, ThisMetaserverId);
}
}
}
//Retirar este servidor da minha view
Console.WriteLine("Remove betrayed: " + betrayedServer);
RemoveServerFromView(betrayedServer);
ViewElementsMutex.ReleaseMutex( );
}
private Boolean UpdateFromServers(List <int> serverIds)
{
foreach (int serverId in serverIds)
{
Console.WriteLine("Copy from : " + serverId);
IMetaToMeta server = MetadataServer.ConnectToMetaserver(serverId);
//Request copy from master
try
{
CopyStructMetadata dataStruct = server.RequestUpdate(MetadataServer.GetQueueStateVector(), MetadataServer.ThisMetaserverId);
//Update the server
MetadataServer.UpdateServer(dataStruct);
}
catch (SocketException)
{
return(false);
}
}
return(true);
}
