internal static ISubscriber BuildMessageHandler(IServiceProvider services, Type type)
{
var handler = (IMessageHandler <RabbitMQDelivery>)ActivatorUtilities.CreateInstance(services, type);
if (handler is ISubscriber subscriber)
{
return(subscriber);
}
var acknowledgeMode = AcknowledgeModeAttribute.FromType(type);
var exceptionMode = ExceptionModeAttribute.FromType(type);
var subscription = type.GetCustomAttribute <SubscribeAttribute>(true);
var asyncContextAccessor = services.GetRequiredService <AsyncContextAccessor>();
if (subscription == null)
{
var exchangeBinding = type.GetCustomAttribute <ExchangeBindingAttribute>(true);
if (exchangeBinding != null)
{
return(new ExchangeBindingSubscriber(
exchangeBinding.Exchange,
exchangeBinding.RoutingKey,
acknowledgeMode,
exceptionMode,
handler,
asyncContextAccessor));
}
subscription = SubscribeAttribute.FromType(type);
}
return(new QueueConsumerSubscriber(subscription.Queue, acknowledgeMode, exceptionMode, handler, asyncContextAccessor));
}
internal static ISubscriber BuildMessageHandlerToQueueDeclare(string queue, IServiceProvider services, Type type)
{
var handler = (IMessageHandler <RabbitMQDelivery>)ActivatorUtilities.CreateInstance(services, type);
if (handler is ISubscriber subscriber)
{
return(subscriber);
}
var asyncContextAccessor = services.GetRequiredService <AsyncContextAccessor>();
var acknowledgeMode = AcknowledgeModeAttribute.FromType(type);
var exceptionMode = ExceptionModeAttribute.FromType(type);
return(new QueueConsumerSubscriber(queue, acknowledgeMode, exceptionMode, handler, asyncContextAccessor));
}