/// <summary>
/// Entry point for all commands execution.
/// </summary>
/// <param name="current"> Current session.</param>
/// <param name="sessions">Collection of all sessions.</param>
/// <param name="value">Message sent by chat cient.</param>
internal static void HandleGameMessage(GameService current, GameSessions sessions, string value)
{
string command = string.Empty;
string commandArgs = string.Empty;
var message = value;
var index = message.IndexOf(":", StringComparison.OrdinalIgnoreCase);
if (index > 0)
{
command = message.Substring(0, index);
commandArgs = message.Substring(index + 1, message.Length - index - 1);
}
else
{
command = message;
}
Logger.LogMessage(command);
Logger.LogMessage(commandArgs);
IGameCommand handler = null;
if (commands.TryGetValue(command, out handler))
{
handler.Execute(current, sessions, commandArgs);
}
}
/// <summary>
/// Sends the message to the destination service.
/// </summary>
/// <param name="destinationService">Destination Service.</param>
/// <param name="value">Message to be sent.</param>
/// <param name="defunctList">List of defucnt services.</param>
public static void Send(GameService destinationService, string value, List<GameService> defunctList)
{
try
{
destinationService.SendMessage(value);
}
catch
{
if (null == defunctList)
{
defunctList = new List<GameService>();
}
defunctList.Add(destinationService);
}
}
/// <summary>
/// Broadcasts message to all sessions after sending messages to the both associated sessions (Buddy pair).
/// Then it also broacasts messages to all other session based on the the response type so that they can update
/// their's buddyList.
/// </summary>
/// <param name="responseType">Broadcast message type.</param>
/// <param name="currentService">Current service instance.</param>
/// <param name="destinationService">Destination service instance.</param>
/// <param name="responseToCurrentService">Message to be sent to the currentService.</param>
/// <param name="responseToDestinationservice">Message to be sent to the destinationService.</param>
public void BroadcastMessage(BroadcastMessageType responseType, GameService currentService, GameService destinationService, string responseToCurrentService, string responseToDestinationservice)
{
if (null != currentService)
{
this.SendMessage(currentService, responseToCurrentService);
}
if (null != destinationService)
{
this.SendMessage(destinationService, responseToDestinationservice);
}
List<GameService> defunctServiceList = null;
// Now also send this to other players who are not playing.
this.thisLock.EnterReadLock();
try
{
foreach (var service in this.innerCache)
{
// Find out logged in users excluding destination service.
if (!string.IsNullOrEmpty(service.Context.LogOnName)
&& service != currentService && service != destinationService)
{
switch (responseType)
{
case BroadcastMessageType.LogOnResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.SelectBuddyResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "RemoveFromBuddyList:" + currentService.Context.LogOnName + ";" + destinationService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.GameCompleteResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName + ";" + destinationService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.LogOffResponse:
// Now this string has \" char at front and back both.
string[] defunctServiceResponse = responseToCurrentService.ToString().Split(new char[] { ':' });
// Remove quotes from the end of this string.
string defunctServiceName = defunctServiceResponse[1].Substring(0, defunctServiceResponse[1].Length - 1);
Send(service, "RemoveFromBuddyList:" + defunctServiceName, defunctServiceList);
// Also tell services to join defunct's buddy in their buddyList as it is no more playing with anyone.
if ((null != currentService) && !string.IsNullOrEmpty(currentService.Context.LogOnName))
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName, defunctServiceList);
}
break;
}
}
}
}
finally
{
this.thisLock.ExitReadLock();
}
// Now look at the defunctService list and take te appropriate action.
if (null != defunctServiceList)
{
// Each pair is made of service name and it's buddy service instance.
Dictionary<string, GameService> defunctBuddyPairs = null;
this.thisLock.EnterWriteLock();
try
{
foreach (var entry in defunctServiceList)
{
GameService buddyInstance = entry.Context.BuddyInstance;
string defunctName = entry.Context.LogOnName;
this.innerCache.Remove(entry);
if (null != buddyInstance && !string.IsNullOrEmpty(defunctName))
{
if (null == defunctBuddyPairs)
{
defunctBuddyPairs = new Dictionary<string, GameService>();
}
defunctBuddyPairs.Add(defunctName, buddyInstance);
}
}
}
finally
{
this.thisLock.ExitWriteLock();
}
if (null != defunctBuddyPairs)
{
foreach (KeyValuePair<string, GameService> buddyPair in defunctBuddyPairs)
{
this.RemoveBuddyPair(buddyPair.Key, buddyPair.Value);
}
}
}
}
/// <summary>
/// Attempting to add another session to the collection.
/// </summary>
/// <param name="entry">Session to add.</param>
/// <returns>true if session was added; false otherwise.</returns>
public bool TryAdd(GameService entry)
{
this.thisLock.EnterUpgradeableReadLock();
try
{
if (this.innerCache.Contains(entry))
{
return false;
}
this.thisLock.EnterWriteLock();
try
{
this.innerCache.Add(entry);
return true;
}
finally
{
this.thisLock.ExitWriteLock();
}
}
finally
{
this.thisLock.ExitUpgradeableReadLock();
}
}
/// <summary>
/// Sends message to destination service.
/// </summary>
/// <param name="destinationService">Destination service.</param>
/// <param name="value">Message to be sent.</param>
public void SendMessage(GameService destinationService, string value)
{
GameService defunct = null;
try
{
destinationService.SendMessage(value);
}
catch
{
if (defunct == null)
{
defunct = destinationService;
}
}
if (defunct != null)
{
GameService buddyInstance = defunct.Context.BuddyInstance;
string defunctName = defunct.Context.LogOnName;
this.thisLock.EnterWriteLock();
try
{
this.innerCache.Remove(defunct);
}
finally
{
this.thisLock.ExitWriteLock();
}
this.RemoveBuddyPair(defunctName, buddyInstance);
}
}
/// <summary>
/// Updates the buddyInstance of died service and broadcasts to all other sessions that
/// this service died so that they can take appropriate action.
/// </summary>
/// <param name="defunctName">Service name.</param>
/// <param name="buddyInstance">Buddy Service instance.</param>
public void RemoveBuddyPair(string defunctName, GameService buddyInstance)
{
// If there is any buddyinstance in the destination service's context
// then modify buddyinstance's context properly.
if (null != buddyInstance)
{
buddyInstance.Context.BuddyInstance = null;
}
// Only broadcast for logged on users.
if (!string.IsNullOrEmpty(defunctName))
{
this.BroadcastMessage(BroadcastMessageType.LogOffResponse, buddyInstance, null, "BuddyDied:" + defunctName, null);
}
}
/// <summary>
/// Attempting to remove a session from the collection.
/// </summary>
/// <param name="entry">Session to remove.</param>
public void Remove(GameService entry)
{
ThreadPool.QueueUserWorkItem(new WaitCallback(this.RemoveInternal), entry);
}
/// <summary>
/// Get seesion list except the current session.
/// </summary>
/// <param name="current">Current session.</param>
/// <returns>List of other player names.</returns>
public string GetOtherLoggedInSessionsList(GameService current)
{
string players = null;
this.thisLock.EnterReadLock();
try
{
foreach (var service in this.innerCache)
{
// Find out logged in users excluding myself.
if (!string.IsNullOrEmpty(service.Context.LogOnName) && service != current)
{
if (null == service.Context.BuddyInstance)
{
players += string.Format(CultureInfo.InvariantCulture, "{0};", service.Context.LogOnName);
}
}
}
}
finally
{
this.thisLock.ExitReadLock();
}
return players;
}
/// <summary>
/// Broadcasts message to all sessions after sending messages to the both associated sessions (Buddy pair).
/// Then it also broacasts messages to all other session based on the the response type so that they can update
/// their's buddyList.
/// </summary>
/// <param name="responseType">Broadcast message type.</param>
/// <param name="currentService">Current service instance.</param>
/// <param name="destinationService">Destination service instance.</param>
/// <param name="responseToCurrentService">Message to be sent to the currentService.</param>
/// <param name="responseToDestinationservice">Message to be sent to the destinationService.</param>
public void BroadcastMessage(BroadcastMessageType responseType, GameService currentService, GameService destinationService, string responseToCurrentService, string responseToDestinationservice)
{
if (null != currentService)
{
this.SendMessage(currentService, responseToCurrentService);
}
if (null != destinationService)
{
this.SendMessage(destinationService, responseToDestinationservice);
}
List <GameService> defunctServiceList = null;
// Now also send this to other players who are not playing.
this.thisLock.EnterReadLock();
try
{
foreach (var service in this.innerCache)
{
// Find out logged in users excluding destination service.
if (!string.IsNullOrEmpty(service.Context.LogOnName) &&
service != currentService && service != destinationService)
{
switch (responseType)
{
case BroadcastMessageType.LogOnResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.SelectBuddyResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "RemoveFromBuddyList:" + currentService.Context.LogOnName + ";" + destinationService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.GameCompleteResponse:
if (null == service.Context.BuddyInstance)
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName + ";" + destinationService.Context.LogOnName, defunctServiceList);
}
break;
case BroadcastMessageType.LogOffResponse:
// Now this string has \" char at front and back both.
string[] defunctServiceResponse = responseToCurrentService.ToString().Split(new char[] { ':' });
// Remove quotes from the end of this string.
string defunctServiceName = defunctServiceResponse[1].Substring(0, defunctServiceResponse[1].Length - 1);
Send(service, "RemoveFromBuddyList:" + defunctServiceName, defunctServiceList);
// Also tell services to join defunct's buddy in their buddyList as it is no more playing with anyone.
if ((null != currentService) && !string.IsNullOrEmpty(currentService.Context.LogOnName))
{
Send(service, "JoinBuddyList:" + currentService.Context.LogOnName, defunctServiceList);
}
break;
}
}
}
}
finally
{
this.thisLock.ExitReadLock();
}
// Now look at the defunctService list and take te appropriate action.
if (null != defunctServiceList)
{
// Each pair is made of service name and it's buddy service instance.
Dictionary <string, GameService> defunctBuddyPairs = null;
this.thisLock.EnterWriteLock();
try
{
foreach (var entry in defunctServiceList)
{
GameService buddyInstance = entry.Context.BuddyInstance;
string defunctName = entry.Context.LogOnName;
this.innerCache.Remove(entry);
if (null != buddyInstance && !string.IsNullOrEmpty(defunctName))
{
if (null == defunctBuddyPairs)
{
defunctBuddyPairs = new Dictionary <string, GameService>();
}
defunctBuddyPairs.Add(defunctName, buddyInstance);
}
}
}
finally
{
this.thisLock.ExitWriteLock();
}
if (null != defunctBuddyPairs)
{
foreach (KeyValuePair <string, GameService> buddyPair in defunctBuddyPairs)
{
this.RemoveBuddyPair(buddyPair.Key, buddyPair.Value);
}
}
}
}
/// <summary>
/// Attempting to remove a session from the collection.
/// </summary>
/// <param name="entry">Session to remove.</param>
public void Remove(GameService entry)
{
ThreadPool.QueueUserWorkItem(new WaitCallback(this.RemoveInternal), entry);
}
