public IEnumerable <IMessageHandlerInvoker> LoadMessageHandlerInvokers(TypeSource typeSource)
{
foreach (var handlerType in typeSource.GetTypes())
{
if (!handlerType.IsClass || handlerType.IsAbstract || !handlerType.IsVisible || !_handlerType.IsAssignableFrom(handlerType))
{
continue;
}
var subscriptionMode = MessageHandlerInvoker.GetExplicitSubscriptionMode(handlerType);
var interfaces = handlerType.GetInterfaces();
var excludedMessageTypes = interfaces.Where(IsExtendedMessageHandlerInterface)
.Select(handleInterface => handleInterface.GetGenericArguments()[0])
.ToHashSet();
var handleInterfaces = interfaces.Where(IsMessageHandlerInterface);
foreach (var handleInterface in handleInterfaces)
{
var messageType = handleInterface.GetGenericArguments()[0];
if (excludedMessageTypes.Contains(messageType))
{
continue;
}
var shouldBeSubscribedOnStartup = MessageHandlerInvoker.MessageShouldBeSubscribedOnStartup(messageType, subscriptionMode);
var invoker = BuildMessageHandlerInvoker(handlerType, messageType, shouldBeSubscribedOnStartup);
yield return(invoker);
}
}
}
