/// <summary>
/// Sends a ControlMessage to NGRID server and gets it's response message.
/// </summary>
/// <param name="message">Message to send</param>
/// <returns>Response message from server</returns>
public ControlMessage SendMessageAndGetResponse(ControlMessage message)
{
//Create a WaitingMessage to wait and get response message and add it to waiting messages
var outgoingMessage = new NGRIDControllerMessage
{
MessageData = NGRIDSerializationHelper.SerializeToByteArray(message),
ControllerMessageTypeId = message.MessageTypeId
};
var waitingMessage = new WaitingMessage();
lock (_waitingMessages)
{
_waitingMessages[outgoingMessage.MessageId] = waitingMessage;
}
try
{
//Send message to the server
SendMessageInternal(outgoingMessage);
//Wait until thread is signalled by another thread to get response (Signalled by CommunicationChannel_MessageReceived method)
waitingMessage.WaitEvent.WaitOne(TimeSpan.FromSeconds(90));
//Check if response received or timeout occured
if(waitingMessage.ResponseMessage == null)
{
throw new NGRIDException("Timeout occured. Response message did not received.");
}
return DeserializeControlMessage(waitingMessage.ResponseMessage);
}
finally
{
//Remove message from waiting messages
lock (_waitingMessages)
{
if (_waitingMessages.ContainsKey(outgoingMessage.MessageId))
{
_waitingMessages.Remove(outgoingMessage.MessageId);
}
}
}
}
/// <summary>
/// Deserializes a ControlMessage from a NGRIDControllerMessage.
/// </summary>
/// <param name="controllerMessage">NGRIDControllerMessage that includes ControlMessage</param>
/// <returns>Deserialized ControlMessage object.</returns>
private static ControlMessage DeserializeControlMessage(NGRIDControllerMessage controllerMessage)
{
return NGRIDSerializationHelper.DeserializeFromByteArray(
() =>
ControlMessageFactory.CreateMessageByTypeId(controllerMessage.ControllerMessageTypeId),
controllerMessage.MessageData);
}
/// <summary>
/// Sends a ControlMessage to all connected NGRIDController instances.
/// </summary>
/// <param name="message">Message to send</param>
private void SendMessageToAllReceivers(ControlMessage message)
{
var outgoingMessage = new NGRIDControllerMessage
{
ControllerMessageTypeId = message.MessageTypeId,
MessageData = NGRIDSerializationHelper.SerializeToByteArray(message)
};
var receivers = GetAllReceiverCommunicators();
foreach (var receiver in receivers)
{
try
{
SendMessage(outgoingMessage, receiver);
}
catch (Exception ex)
{
Logger.Warn(ex.Message, ex);
}
}
}
/// <summary>
/// Sends a message to a spesific communicator as a reply to an incoming message.
/// </summary>
/// <param name="communicator">Communicator to send message</param>
/// <param name="message">Message to send</param>
/// <param name="incomingMessage">Incoming message which is being replied</param>
private void ReplyMessageToCommunicator(ICommunicator communicator, ControlMessage message, NGRIDControllerMessage incomingMessage)
{
//Create NGRIDControllerMessage that includes serialized GetApplicationListResponseMessage message
var outgoingMessage = new NGRIDControllerMessage
{
ControllerMessageTypeId = message.MessageTypeId,
MessageData = NGRIDSerializationHelper.SerializeToByteArray(message),
RepliedMessageId = incomingMessage.MessageId
};
//Send message to communicator that sent to message
SendMessage(outgoingMessage, communicator);
}
private void ProcessGetApplicationWebServicesMessage(ICommunicator communicator, GetApplicationWebServicesMessage message, NGRIDControllerMessage controllerMessage)
{
try
{
//Find application
ApplicationInfoItem application = null;
foreach (var applicationInfoItem in _settings.Applications)
{
if(applicationInfoItem.Name == message.ApplicationName)
{
application = applicationInfoItem;
}
}
if(application == null)
{
//Send message
ReplyMessageToCommunicator(
communicator,
new GetApplicationWebServicesResponseMessage
{
WebServices = null,
Success = false,
ResultText = "No application found with name '" + message.ApplicationName + "'."
},
controllerMessage
);
return;
}
var webServiceList = new List<ApplicationWebServiceInfo>();
foreach (var channel in application.CommunicationChannels)
{
if ("WebService".Equals(channel.CommunicationType, StringComparison.OrdinalIgnoreCase))
{
webServiceList.Add(new ApplicationWebServiceInfo {Url = channel.CommunicationSettings["Url"]});
}
}
//Send web service list
ReplyMessageToCommunicator(
communicator,
new GetApplicationWebServicesResponseMessage
{
WebServices = webServiceList.ToArray(),
Success = true,
ResultText = "Success."
},
controllerMessage
);
}
catch (Exception ex)
{
Logger.Error(ex.Message, ex);
}
}
private void ProcessUpdateApplicationWebServicesMessage(ICommunicator communicator, UpdateApplicationWebServicesMessage message, NGRIDControllerMessage controllerMessage)
{
try
{
//Find application
ApplicationInfoItem application = null;
foreach (var applicationInfoItem in _settings.Applications)
{
if (applicationInfoItem.Name == message.ApplicationName)
{
application = applicationInfoItem;
}
}
if (application == null)
{
//Send message
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage()
{
Success = false,
ResultMessage = "No application found with name '" + message.ApplicationName + "'."
},
controllerMessage
);
return;
}
//Delete old service list
application.CommunicationChannels.Clear();
//Add new services
if (message.WebServices != null && message.WebServices.Length > 0)
{
foreach (var webServiceInfo in message.WebServices)
{
var channelInfo = new ApplicationInfoItem.CommunicationChannelInfoItem { CommunicationType = "WebService" };
channelInfo.CommunicationSettings["Url"] = webServiceInfo.Url;
application.CommunicationChannels.Add(channelInfo);
}
}
try
{
//Save settings
_settings.SaveToXml();
}
catch (Exception ex)
{
Logger.Error(ex.Message, ex);
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage()
{
Success = false,
ResultMessage = "Can not save XML configuration file (NGRIDSettings.xml)."
},
controllerMessage
);
return;
}
//Send success message
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage()
{
Success = true,
ResultMessage = "Success."
},
controllerMessage
);
}
catch (Exception ex)
{
Logger.Error(ex.Message, ex);
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage()
{
Success = false,
ResultMessage = ex.Message
},
controllerMessage
);
return;
}
}
/// <summary>
/// Processes UpdateServerGraphMessage.
/// </summary>
/// <param name="communicator">Communicator that sent message</param>
/// <param name="controlMessage">The message to be processed</param>
/// <param name="controllerMessage">NGRIDControllerMessage object that includes controlMessage</param>
private void ProcessUpdateServerGraphMessage(ICommunicator communicator, UpdateServerGraphMessage controlMessage, NGRIDControllerMessage controllerMessage)
{
try
{
var newSettings = new NGRIDSettings(Path.Combine(GeneralHelper.GetCurrentDirectory(), "NGRIDSettings.xml"));
//var newDesignSettings = new NGRIDDesignSettings(Path.Combine(GeneralHelper.GetCurrentDirectory(), "NGRIDSettings.design.xml"));
//Clear existing server lists
newSettings.Servers.Clear();
//newDesignSettings.Servers.Clear();
//Add servers from UpdateServerGraphMessage
newSettings.ThisServerName = controlMessage.ServerGraph.ThisServerName;
foreach (var server in controlMessage.ServerGraph.Servers)
{
//Settings
newSettings.Servers.Add(
new ServerInfoItem
{
Name = server.Name,
IpAddress = server.IpAddress,
Port = server.Port,
Adjacents = server.Adjacents
});
/*Design settings
newDesignSettings.Servers.Add(
new ServerDesignItem
{
Name = server.Name,
Location = server.Location
});*/
}
//Save settings
newSettings.SaveToXml();
//newDesignSettings.SaveToXml();
}
catch (Exception ex)
{
//Send fail message
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage {Success = false, ResultMessage = ex.Message},
controllerMessage
);
return;
}
//Send success message
ReplyMessageToCommunicator(
communicator,
new OperationResultMessage {Success = true, ResultMessage = "Success"},
controllerMessage
);
}
/// <summary>
/// Processes GetServerGraphMessage.
/// </summary>
/// <param name="communicator">Communicator that sent message</param>
/// <param name="controllerMessage">NGRIDControllerMessage object that includes controlMessage</param>
private void ProcessGetServerGraphMessage(ICommunicator communicator, NGRIDControllerMessage controllerMessage)
{
//Create response message
var responseMessage =
new GetServerGraphResponseMessage
{
ServerGraph =
new ServerGraphInfo
{
ThisServerName = _settings.ThisServerName,
Servers = new ServerGraphInfo.ServerOnGraph[_settings.Servers.Count]
}
};
//Fill server settings
for (var i = 0; i < _settings.Servers.Count; i++)
{
responseMessage.ServerGraph.Servers[i] = new ServerGraphInfo.ServerOnGraph
{
Name = _settings.Servers[i].Name,
IpAddress = _settings.Servers[i].IpAddress,
Port = _settings.Servers[i].Port,
Adjacents = _settings.Servers[i].Adjacents
};
}
//Fill server design settings
for (var i = 0; i < responseMessage.ServerGraph.Servers.Length; i++)
{
foreach (var serverDesignItem in _designSettings.Servers)
{
if (responseMessage.ServerGraph.Servers[i].Name == serverDesignItem.Name)
{
responseMessage.ServerGraph.Servers[i].Location = serverDesignItem.Location;
break;
}
}
}
//Send response message
ReplyMessageToCommunicator(
communicator,
responseMessage,
controllerMessage
);
}
/// <summary>
/// Processes RemoveApplicationMessage.
/// </summary>
/// <param name="communicator">Communicator that sent message</param>
/// <param name="controlMessage">The message to be processed</param>
/// <param name="controllerMessage">NGRIDControllerMessage object that includes controlMessage</param>
private void ProcessRemoveApplicationMessage(ICommunicator communicator, RemoveApplicationMessage controlMessage, NGRIDControllerMessage controllerMessage)
{
try
{
var removedApplication = OrganizationLayer.RemoveApplication(controlMessage.ApplicationName);
removedApplication.CommunicatorConnected -= ClientApplication_CommunicatorConnected;
removedApplication.CommunicatorDisconnected -= ClientApplication_CommunicatorDisconnected;
ReplyMessageToCommunicator(
communicator,
new RemoveApplicationResponseMessage
{
ApplicationName = controlMessage.ApplicationName,
Removed = true,
ResultMessage = "Success."
},
controllerMessage
);
SendMessageToAllReceivers(
new ClientApplicationRemovedEventMessage
{
ApplicationName = removedApplication.Name
});
}
catch (Exception ex)
{
Logger.Warn(ex.Message, ex);
ReplyMessageToCommunicator(
communicator,
new RemoveApplicationResponseMessage
{
ApplicationName = controlMessage.ApplicationName,
Removed = false,
ResultMessage = ex.Message
},
controllerMessage
);
}
}
/// <summary>
/// Processes GetApplicationListMessage.
/// </summary>
/// <param name="communicator">Communicator that sent message</param>
/// <param name="controllerMessage">NGRIDControllerMessage object that includes controlMessage</param>
private void ProcessGetApplicationListMessage(ICommunicator communicator, NGRIDControllerMessage controllerMessage)
{
//Get all client applications
var applicationList = OrganizationLayer.GetClientApplications();
//Create ClientApplicationInfo array
var clientApplications = new GetApplicationListResponseMessage.ClientApplicationInfo[applicationList.Length];
for (var i = 0; i < applicationList.Length; i++)
{
clientApplications[i] = new GetApplicationListResponseMessage.ClientApplicationInfo
{
Name = applicationList[i].Name,
CommunicatorCount = applicationList[i].ConnectedCommunicatorCount
};
}
//Send response message
ReplyMessageToCommunicator(
communicator,
new GetApplicationListResponseMessage
{
ClientApplications = clientApplications
},
controllerMessage
);
}
/// <summary>
/// This methods checks type of message (MessageTypeId) and calls appropriate method to process message.
/// </summary>
/// <param name="communicator">Communicator that sent message</param>
/// <param name="controllerMessage">NGRIDControllerMessage object that includes controlMessage</param>
/// <param name="controlMessage">The message to be processed</param>
private void ProcessControllerMessage(ICommunicator communicator, NGRIDControllerMessage controllerMessage , ControlMessage controlMessage)
{
switch (controlMessage.MessageTypeId)
{
case ControlMessageFactory.MessageTypeIdGetApplicationListMessage:
ProcessGetApplicationListMessage(communicator, controllerMessage);
break;
case ControlMessageFactory.MessageTypeIdAddNewApplicationMessage:
ProcessAddNewApplicationMessage(controlMessage as AddNewApplicationMessage);
break;
case ControlMessageFactory.MessageTypeIdRemoveApplicationMessage:
ProcessRemoveApplicationMessage(communicator, controlMessage as RemoveApplicationMessage, controllerMessage);
break;
case ControlMessageFactory.MessageTypeIdGetServerGraphMessage:
ProcessGetServerGraphMessage(communicator, controllerMessage);
break;
case ControlMessageFactory.MessageTypeIdUpdateServerGraphMessage:
ProcessUpdateServerGraphMessage(communicator, controlMessage as UpdateServerGraphMessage, controllerMessage);
break;
case ControlMessageFactory.MessageTypeIdGetApplicationWebServicesMessage:
ProcessGetApplicationWebServicesMessage(communicator, controlMessage as GetApplicationWebServicesMessage, controllerMessage);
break;
case ControlMessageFactory.MessageTypeIdUpdateApplicationWebServicesMessage:
ProcessUpdateApplicationWebServicesMessage(communicator, controlMessage as UpdateApplicationWebServicesMessage, controllerMessage);
break;
default:
throw new NGRIDException("Undefined MessageTypeId for ControlMessage: " + controlMessage.MessageTypeId);
}
}