public void RemoveHandler(Type messageType, Type handlerType)
{
var baseHandlerTypes = MessageHandlerExtensions.GetBaseHandlerTypes(handlerType);
foreach (var baseHandlerType in baseHandlerTypes)
{
var messageType1 = baseHandlerType.GenericTypeArguments.Single();
if (messageType != messageType1)
{
continue;
}
if (!_handlerDict.TryGetValue(messageType, out var handlers))
{
continue;
}
if (handlers.All(handlerWrapper => handlerWrapper.BaseHandlerType != baseHandlerType))
{
continue;
}
handlers = handlers.Where(x => x.BaseHandlerType != baseHandlerType).ToList();
if (handlers.Count != 0)
{
continue;
}
_handlerDict.Remove(messageType);
var eventName = MessageNameAttribute.GetNameOrDefault(messageType);
if (_messageTypeMappingDict.ContainsKey(eventName))
{
_messageTypeMappingDict.Remove(eventName);
}
OnEventRemoved?.Invoke(this, messageType);
}
}
private void RegisterMessageTypeMapping(Type messageType)
{
var eventName = MessageNameAttribute.GetNameOrDefault(messageType);
if (!_messageTypeMappingDict.ContainsKey(eventName))
{
_messageTypeMappingDict.Add(eventName, messageType);
}
}
public MessageHandlerWrapper(
IServiceScopeFactory serviceScopeFactory,
Type handlerType)
{
_serviceScopeFactory = serviceScopeFactory;
MessageName = MessageNameAttribute.GetNameOrDefault(typeof(TMessage));
MessageType = typeof(TMessage);
HandlerType = handlerType;
HandlerPriority = MessageHandlerPriorityAttribute.GetPriority(typeof(TMessage), handlerType);
if (MessageHandlerLifetimeAttribute.GetHandlerLifetime(handlerType) == MessageHandlerLifetime.Singleton)
{
_handler = GetIocMessageHandler();
}
}
public void AddHandler(Type messageType, Type handlerType)
{
if (_messageHandlerWrappers.Any(handlerWrapper => handlerWrapper.MessageType == messageType && handlerWrapper.HandlerType == handlerType))
{
throw new ArgumentException(
$"Handler Type {handlerType.Name} already registered for '{messageType.Name}'");
}
var messageName = MessageNameAttribute.GetNameOrDefault(messageType);
if (_messageHandlerWrappers.Any(handlerWrapper => handlerWrapper.MessageName == messageName && handlerWrapper.MessageType != messageType))
{
throw new ArgumentException(
$"The message name '{messageName}' corresponding to the message type '{messageType}' already exists");
}
var handlerWrapperType = typeof(MessageHandlerWrapper <>).MakeGenericType(messageType);
_messageHandlerWrappers.Add(Activator.CreateInstance(handlerWrapperType, _serviceScopeFactory, handlerType) as IMessageHandlerWrapper);
}
