//
//
//
//
#endregion//Constructors
#region no Properties
// *****************************************************************
// **** Properties ****
// *****************************************************************
//
//
#endregion//Properties
#region Public Methods
// *****************************************************************
// **** Public Methods ****
// *****************************************************************
//
//
// *************************************************
// **** TryAddService() ****
// *************************************************
/// <summary>
/// This ForeignServer will try to register this ForeignSerivce with AppServices.
/// It will try to create a new LocalServiceName = "Remote Service Name" + "@" + "ServerId"
/// so that it will be unique in the *local* application service list.
/// </summary>
/// <param name="foreignService"></param>
/// <returns></returns>
public bool TryAddService(ForeignService foreignService)
{
bool isSuccess = true;
// Store service inside this server.
foreignService.Parent = this; // Connect events to the service before registering it.
if (this.Services.ContainsKey(foreignService.RemoteServiceName))
{
return(false);
}
else
{
this.Services.Add(foreignService.RemoteServiceName, foreignService);
}
// Create unique name and register with AppServices.
AppServices app = AppServices.GetInstance();
/*
* foreignService.ServiceName = string.Format("{0}@{1}",foreignService.RemoteServiceName,this.ServerId); // Usually this is enough for uniqueness.
* if (! app.TryAddService(foreignService) )
* { // This should never happen since the remote name is unique on the foreign server,
* // and my server id is unique.
* int n = (int)'A';
* foreignService.ServiceName = string.Format("{0}@{1}{2}", foreignService.RemoteServiceName, this.ServerId, Convert.ToChar(n));
* while ( ! app.TryAddService(foreignService) && n < 123)
* foreignService.ServiceName = string.Format("{0}@{1}{2}", foreignService.RemoteServiceName, this.ServerId, Convert.ToChar(++n));
* if (n >= 123)
* isSuccess = false;
* }
*/
// new approach is to assume unique names are employed.
foreignService.ServiceName = foreignService.RemoteServiceName;
if (!app.TryAddService(foreignService))
{
isSuccess = false;
}
return(isSuccess);
}// TryAddService()
//
// *****************************************
// **** Send Services() ****
// *****************************************
/// <summary>
/// Sends Messages specific to the addition/removal of
/// local services. These messages are broadcast to all
/// currently connected servers.
/// TODO: Perhaps we need only broadcast to those connections
/// that initiated the connection?
/// </summary>
/// <param name="conversationId"></param>
/// <param name="msgType"></param>
/// <param name="iServiceList"></param>
private void SendServices(int conversationId, MessageType msgType, List <IService> iServiceList)
{
Message msg = GetMessage(MessageType.ServiceAdded, MessageState.Confirmed);
foreach (IService iService in iServiceList)
{
if (iService is ServiceManager)
{
continue; // skip services we don't want to list on remote server.
}
else if (iService is IEngineHub)
{ // EngineHubs are special kinds of Services.
ForeignEngineHub service = new ForeignEngineHub(iService);
msg.Data.Add(service);
}
else
{ // All other services.
ForeignService service = new ForeignService(iService);
msg.Data.Add(service);
}
}
SendMessage(conversationId, msg);
}// SendServices()
} // ProcessRequestMessage()
//
//
//
//
// *************************************************************
// **** ProcessConfirmMessage() ****
// *************************************************************
private void ProcessMessageResponses(SocketEventArgs eventArg, Message msg)
{
// Get server responding
ForeignServer foreignServer = null;
if (!m_ServersConnected.TryGetValue(eventArg.ConversationId, out foreignServer))
{
Log.NewEntry(LogLevel.Warning, "ProcessConfirmMessage: Unknown server {0} with message: {1}", eventArg, msg);
return;
}
switch (msg.MessageType)
{
case MessageType.Credentials:
if (msg.State == MessageState.Confirmed)
{ // Our credentials were accepted.
Log.NewEntry(LogLevel.Minor, "ProcessConfirmMessage: Credentials accepted by {0}", foreignServer);
}
else
{
Log.NewEntry(LogLevel.Minor, "ProcessConfirmMessage: Credentials rejected by {0}. Disconnecting.", foreignServer);
m_Socket.StopConversation(foreignServer.ConversationId);
ForeignServerDisconnect(foreignServer);
}
break;
case MessageType.CreateServices:
break;
case MessageType.ServiceAdded:
// ForeignServer has added a new service.
// Here, I want to make a ghost-service that represents each service provided by the foreign server.
Log.BeginEntry(LogLevel.Minor, "ProcessConfirmMessage: Services discovered on {0}:", foreignServer);
foreach (IStringifiable iStr in msg.Data)
{
if (iStr is ForeignService)
{
ForeignService foreignService = (ForeignService)iStr;
if (foreignServer.TryAddService(foreignService))
{
Log.AppendEntry(" {0}", foreignService);
}
else
{
Log.AppendEntry(" {0}[Failed to add]", foreignService);
}
}
}
Log.EndEntry();
break;
case MessageType.ServiceRemoved:
foreach (IStringifiable istring in msg.Data)
{
}
break;
case MessageType.EngineEvent:
// Engine events from foreign IEngineHubs.
foreach (IStringifiable iString in msg.Data)
{
if (iString is EngineEventArgs)
{
EngineEventArgs e = (EngineEventArgs)iString;
if (e.Status == EngineEventArgs.EventStatus.Request)
{ // Send this to a single hub
IService iService = null;
if (m_AppServices.TryGetService(e.EngineHubName, out iService) && iService is IEngineHub)
{
((IEngineHub)iService).HubEventEnqueue(e);
}
}
else
{ // Broadcast to all subscribed to this hub.
ForeignService fs;
if (foreignServer.TryGetService(e.EngineHubName, out fs) && (fs is IEngineHub))
{
e.EngineHubName = fs.ServiceName;
((IEngineHub)fs).OnEngineChanged(e);
}
}
}
}
break;
} //switch
} //ProcessConfirmMessage()
}// TrySendMessage()
//
public bool TryGetService(string serviceName, out ForeignService iService)
{
return(Services.TryGetValue(serviceName, out iService));
}
