/// <summary>
/// 当完成消息的分发后发生。
/// </summary>
/// <param name="e">事件数据。</param>
protected virtual void OnDispatched(MessageDispatchEventArgs e)
{
var temp = this.Dispatched;
if (temp != null)
{
temp(this, e);
}
}
/// <summary>
/// 分发给定的消息对象。
/// </summary>
/// <param name="message">将被分发的消息对象。</param>
public virtual void DispatchMessage <TMessage>(TMessage message) where TMessage : IMessage
{
if (message == null)
{
throw new ArgumentNullException("message");
}
var messageType = typeof(TMessage);
if (!messageType.IsPublic)
{
messageType = messageType.BaseType;
}
if (messageType != null && !messageType.IsPublic)
{
throw new BusException("不支持分发多级继承的消息。消息的继承不应超过两级。");
}
if (messageType != null && _handlers.ContainsKey(messageType))
{
var messageHandlers = _handlers[messageType];
foreach (var messageHandler in messageHandlers)
{
var dynMessageHandler = (IHandler <TMessage>)messageHandler;
var evtArgs = new MessageDispatchEventArgs(message, messageHandler.GetType(), messageHandler);
this.OnDispatching(evtArgs);
try
{
dynMessageHandler.Handle(message);
this.OnDispatched(evtArgs);
}
catch
{
this.OnDispatchFailed(evtArgs);
throw;
}
}
}
else
{
// TODO:死信邮箱
}
}