public void Subscribe(Type eventDataType, Type eventHandlerType)
{
if (!typeof(IntegrationEvent).IsAssignableFrom(eventDataType) || !typeof(IIntegrationEventHandler <>).MakeGenericType(eventDataType).IsAssignableFrom(eventHandlerType))
{
throw new Exception("eventDataType参数不继承IntegrationEvent!");
}
var topicAttribute = eventDataType.GetCustomAttributes().OfType <EventTopicAttribute>().FirstOrDefault();
var topicName = topicAttribute?.TopicName ?? this.GetType().FullName;
var groupAttribute = eventHandlerType.GetCustomAttributes().OfType <EventGroupAttribute>().FirstOrDefault();
var groupId = groupAttribute?.GroupId ?? "default-group";
lock (_lock)
{
var handler = new IntegrationHandlerDesc(eventHandlerType, eventDataType, groupId, typeof(IIntegrationEventHandler <>).MakeGenericType(eventDataType).GetMethod("Handle"));
if (eventStore.ContainsKey(topicName))
{
var handlers = eventStore[topicName];
if (!handlers.Any(o => o.GroupId == handler.GroupId && o.HandlerType == handler.HandlerType && o.IntegrationEventType == handler.IntegrationEventType))
{
handlers.Add(handler);
}
}
else
{
eventStore.TryAdd(topicName, new List <IntegrationHandlerDesc> {
handler
});
}
}
}
public void Subscribe <T, TH>()
where T : IntegrationEvent
where TH : IIntegrationEventHandler <T>
{
var topicAttribute = typeof(T).GetCustomAttributes().OfType <EventTopicAttribute>().FirstOrDefault();
var topicName = topicAttribute?.TopicName ?? this.GetType().FullName;
var groupAttribute = typeof(TH).GetCustomAttributes().OfType <EventGroupAttribute>().FirstOrDefault();
var groupId = groupAttribute?.GroupId ?? "default-group";
lock (_lock)
{
var handler = new IntegrationHandlerDesc(typeof(TH), typeof(T), groupId, typeof(IIntegrationEventHandler <>).MakeGenericType(typeof(TransportMessage).MakeGenericType(typeof(T))).GetMethod("Handle"));
if (eventStore.ContainsKey(topicName))
{
var handlers = eventStore[topicName];
if (!handlers.Any(o => o.GroupId == handler.GroupId && o.HandlerType == handler.HandlerType && o.IntegrationEventType == handler.IntegrationEventType))
{
handlers.Add(handler);
}
}
else
{
eventStore.TryAdd(topicName, new List <IntegrationHandlerDesc> {
handler
});
}
}
}
