public void RemoveSubscription(Type eventType, Type handlerType)
{
var baseHandlerType = typeof(IIntegrationEventHandler <>).MakeGenericType(eventType);
if (!baseHandlerType.IsAssignableFrom(handlerType))
{
return;
}
var eventName = EventNameAttribute.GetNameOrDefault(eventType);
var handlerToRemove = TryFindSubscriptionToRemove(eventName, baseHandlerType);
TryRemoveHandler(eventName, handlerToRemove);
}
private void TryAddSubscriptionEventHandler(Type eventType, Type baseHandlerType)
{
var eventName = EventNameAttribute.GetNameOrDefault(eventType);
if (!IncludeSubscriptionsHandlesForEventName(eventName))
{
_handlers.GetOrAdd(eventName, new List <Type>());
}
if (_handlers[eventName].Any(s => s == baseHandlerType))
{
throw new ArgumentException(
$"Handler Type {baseHandlerType.Name} already registered for '{eventName}'", nameof(baseHandlerType));
}
_handlers[eventName].Add(baseHandlerType);
}
private void TryAddSubscriptionEventType(Type eventType)
{
var eventName = EventNameAttribute.GetNameOrDefault(eventType);
if (_eventTypes.ContainsKey(eventName))
{
//duplicate event key
if (_eventTypes[eventName] != eventType)
{
throw new ArgumentException(
$"Event name {eventName} already exists,please make sure the event key is unique");
}
}
else
{
_eventTypes[eventName] = eventType;
}
}