/// <summary>
/// 事件处理函数，用户向好友广播消息，登录、退出
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void HandleEvent(object sender, ChatEventArgs e)
{
ChatterService friendChatterService = sender as ChatterService;
if (Online.ContainsKey(member.Id))
{
try
{
switch (e.Type)
{
///账户为id的好友登录
case MessageType.Login:
{
///为好友订阅事件，以便自己登录退出通知他
ChatEvent += friendChatterService.myEventHandler;
callback.OnLogin(e.Id);
break;
}
///用户名为id的好友退出
case MessageType.Logoff:
{
///为好友取消订阅
ChatEvent -= friendChatterService.myEventHandler;
callback.OnLogoff(e.Id);
break;
}
}
}
catch (Exception ex)
{
MyLogger.Logger.Warn("回调失败" + member.Id);
}
}
}
public void Logoff(Member member)
{
MyLogger.Logger.Info(String.Format("用户{0}退出", member.Id + " " + member.NickName));
ChatEventArgs e = new ChatEventArgs();
e.Id = member.Id;
e.NickName = member.NickName;
e.Type = MessageType.Logoff;
if (Online.ContainsKey(member.Id))
Online.Remove(member.Id);
if (lastUpdateTable.ContainsKey(member.Id))
lastUpdateTable.Remove(member.Id);
BroadCatMessage(e);
PrintOnLineNumber();
}
/// <summary>
/// 向好友广播消息，比如登录、退出
/// </summary>
/// <param name="e"></param>
private void BroadCatMessage(ChatEventArgs e)
{
///当在线好友数为0时
if (ChatEvent == null)
return;
///对好友广播消息
foreach (ChatEventHandler hanlder in ChatEvent.GetInvocationList())
{
hanlder.BeginInvoke(this, e, new AsyncCallback(EndAsync), hanlder);
}
}
/// <summary>
/// 处理用户登录
/// </summary>
/// <param name="member">包含用户名密码的member</param>
/// <returns>返回登录结果，如果登录成功，Result.Member 包含用户的信息</returns>
public Result Login(Member member)
{
MyLogger.Logger.Info(String.Format("用户{0}请求登录", member.Id + " " + member.NickName));
try
{
///判断用户名和密码是否正确
if (!DALService.IsMember(member.Id, member.Password))
{
MyLogger.Logger.Info(String.Format("用户{0}登录失败", member.Id + " " + member.NickName));
return new Result() { Status = MessageStatus.Failed };
}
member.Password = null;
this.member = DALService.GetMember(member.Id);
lastUpdateTable.Add(this.member.Id, DateTime.Now);
GetEndPoint();
///获得回调句柄
callback = OperationContext.Current.GetCallbackChannel<IChatterCallback>();
///获得好友们的id
RefreshFriendsList();
///新建消息处理函数,处理登录、退出消息
myEventHandler = new ChatEventHandler(HandleEvent);
///新建消息参数
ChatEventArgs e = new ChatEventArgs();
///消息发出者的id
e.Id = member.Id;
///消息发出者的昵称
e.NickName = member.NickName;
///消息类型为登录
e.Type = MessageType.Login;
///为每个在线好友订阅事件
foreach (string friendId in friends.Keys)
{
if (Online.ContainsKey(friendId))
{
ChatEvent += Online[friendId] as ChatEventHandler;
}
}
var groups = DALService.GetAllGroups(member.Id);
foreach (var group in groups)
{
foreach (Member m in group.GroupMember)
{
if (Online.ContainsKey(m.Id)&&!(friends.ContainsKey(m.Id)))
{
ChatEvent += Online[m.Id] as ChatEventHandler;
}
}
}
///广播消息 将登录退出的消息发给好友
BroadCatMessage(e);
///加锁，防止多线程同时访问
lock (lockObj)
{
///将用户加到在线列表
Online.Add(member.Id, myEventHandler);
}
MyLogger.Logger.Info(String.Format("用户{0}登录成功", member.Id + " " + member.NickName));
///打印在线人数
PrintOnLineNumber();
}
catch (Exception e)
{
MyLogger.Logger.Error(member.Id + "登录时候出现错误", e);
return new Result() { Status = MessageStatus.Failed, Member = null };
}
///返回登录结果
return new Result() { Status = MessageStatus.OK, Member = DALService.GetMember(member.Id) };
}
