public virtual IMediator Subscribe <T>(IMediatorMessageHandler <T> handler)
where T : IMessageBase
{
var eventType = typeof(T);
Lock.EnterUpgradeableReadLock();
try {
List <IMediatorMessageHandler> handlers;
if (!Handlers.TryGetValue(eventType, out handlers))
{
Lock.EnterWriteLock();
try {
Handlers.Add(eventType, new List <IMediatorMessageHandler> {
handler
});
} finally {
Lock.ExitWriteLock();
}
}
else if (handlers.All(x => x != handler))
{
Lock.EnterWriteLock();
try {
handlers.Add(handler);
} finally {
Lock.ExitWriteLock();
}
}
} finally {
Lock.EnterUpgradeableReadLock();
}
return(this);
}
protected void ExecuteHandler <T>(IMediatorMessageHandler handler, T message) where T : IMessageBase
{
if (handler == null || message == null)
{
return; //TODO: Add logging logic
}
try {
((IMediatorMessageHandler <T>)handler)?.Handle(message);
} catch (Exception ex) {
var exceptionString = ex.ToString();
Console.WriteLine(exceptionString);
}
}
protected void ExecuteHandler <T>(IMediatorMessageHandler handler, T message) where T : IMessageBase
{
((IMediatorMessageHandler <T>)handler)?.Handle(message);
}
