private ConsumerConnectionModel Subscribe(RabbitMqConsumerOptions consumerOptions)
{
var messageType = Type.GetType(consumerOptions.MessageTypeFullName);
if (messageType == null)
{
throw new InvalidOperationException($"Failed get message type for {consumerOptions.MessageTypeFullName}");
}
var handlerType = Type.GetType(consumerOptions.HandlerTypeFullName);
if (handlerType == null)
{
throw new InvalidOperationException($"Failed get handler type for {consumerOptions.HandlerTypeFullName}");
}
CheckHandlerIsResolvable(handlerType);
var cc = new ConsumerConnectionModel
{
MaxParallelHandlers = consumerOptions.MaxParallelHandlers,
MessageProccessRetryDelayInMilliseconds = consumerOptions.MessageProccessRetryDelayInMilliseconds,
MessageProcessRetryCount = consumerOptions.MessageProcessRetryCount,
PrefetchCount = consumerOptions.PrefetchCount
};
var handlerInvokerType = typeof(MessageHandlerInvoker <,>).MakeGenericType(messageType, handlerType);
cc.MessageHandlerInvoker = (IMessageHandlerInvoker)Activator.CreateInstance(handlerInvokerType,
new object[] {
_serviceProvider,
cc.MessageProcessRetryCount,
TimeSpan.FromMilliseconds(cc.MessageProccessRetryDelayInMilliseconds),
cc.MaxParallelHandlers
});
var subscribeAsync = typeof(IBus)
.GetMethods()
.FirstOrDefault(x => x.Name == nameof(IBus.SubscribeAsync) && x.GetParameters().Length == 2)?
.MakeGenericMethod(messageType);
if (subscribeAsync == null)
{
throw new InvalidOperationException("Unable to subscribe due to: IBus.SubscribeAsync not found");
}
var bus = CreateBus(messageType, cc.PrefetchCount);
var onMessage = cc.MessageHandlerInvoker.CreateHandlerDelegate();
cc.SubscriptionResult = (ISubscriptionResult)subscribeAsync.Invoke(bus, new object[] { _options.AppName, onMessage });
return(cc);
}
public StreamFlowRabbitMq(IServiceCollection services, StreamFlowOptions options)
{
_services = services;
_options = options;
services.TryAddSingleton <IRabbitMqConventions, RabbitMqConventions>();
services.TryAddSingleton <IMessageSerializer, RabbitMqMessageSerializer>();
services.TryAddSingleton <IOutboxMessageAddressProvider, RabbitMqMessageAddressProvider>();
services.TryAddScoped <ILoggerScopeStateFactory, LoggerScopeStateFactory>();
services.TryAddSingleton <IRabbitMqMetrics, RabbitMqNoOpMetrics>();
services.TryAddScoped <IPublisher, RabbitMqPublisher>();
services.TryAddSingleton <IRabbitMqPublisherChannel, RabbitMqPublisherChannel>();
services.TryAddSingleton <IRabbitMqPublisherBus, RabbitMqPublisherBus>();
_publisherOptions = new RabbitMqPublisherOptions();
services.AddSingleton(_publisherOptions);
_consumerOptions = new RabbitMqConsumerOptions();
services.AddSingleton(_consumerOptions);
}
