public void RemoveHandler <TMsg>(IHandler <TMsg> handlerToRemove) where TMsg : class, IMessage
{
NarrowingHandler <IMessage, TMsg> narrowingHandler = _handlers.OfType <NarrowingHandler <IMessage, TMsg> >()
.SingleOrDefault(x => x.Handler == handlerToRemove);
if (narrowingHandler != null)
{
_handlers.Remove((IHandler <T>)narrowingHandler);
}
}
public void Subscribe <T>(string topic, IHandler <T> handler) where T : class, IMessage
{
var imessageshandler = new NarrowingHandler <IMessage, T>(handler);
Multiplexer <IMessage> existingHandler;
if (_subscriptions.TryGetValue(topic, out existingHandler))
{
var clone = existingHandler.Clone();
clone.AddHandler(imessageshandler);
_subscriptions[topic] = clone;
}
else
{
var handlers = new Multiplexer <IMessage>(new[] { imessageshandler });
_subscriptions.Add(topic, handlers);
}
}