public static IServiceCollection AddMessagePipe(this IServiceCollection services, Action <MessagePipeOptions> configure)
{
var options = new MessagePipeOptions();
configure(options);
services.AddSingleton(options); // add as singleton instance
services.AddSingleton(typeof(MessagePipeDiagnosticsInfo));
services.AddSingleton(typeof(EventFactory));
// filters.
// attribute and order is deterministic at compile, so use Singleton lifetime of cache.
services.AddSingleton(typeof(AttributeFilterProvider <MessageHandlerFilterAttribute>));
services.AddSingleton(typeof(AttributeFilterProvider <AsyncMessageHandlerFilterAttribute>));
services.AddSingleton(typeof(AttributeFilterProvider <RequestHandlerFilterAttribute>));
services.AddSingleton(typeof(AttributeFilterProvider <AsyncRequestHandlerFilterAttribute>));
services.AddSingleton(typeof(FilterAttachedMessageHandlerFactory));
services.AddSingleton(typeof(FilterAttachedAsyncMessageHandlerFactory));
services.AddSingleton(typeof(FilterAttachedRequestHandlerFactory));
services.AddSingleton(typeof(FilterAttachedAsyncRequestHandlerFactory));
foreach (var item in options.GetGlobalFilterTypes())
{
services.TryAddTransient(item); // filter itself is Transient
}
#if !UNITY_2018_3_OR_NEWER
// open generics implemntations(.NET Only)
{
var lifetime = options.InstanceLifetime; // pubsub lifetime
// keyless PubSub
services.Add(typeof(MessageBrokerCore <>), lifetime);
services.Add(typeof(IPublisher <>), typeof(MessageBroker <>), lifetime);
services.Add(typeof(ISubscriber <>), typeof(MessageBroker <>), lifetime);
services.Add(typeof(BufferedMessageBrokerCore <>), lifetime);
services.Add(typeof(IBufferedPublisher <>), typeof(BufferedMessageBroker <>), lifetime);
services.Add(typeof(IBufferedSubscriber <>), typeof(BufferedMessageBroker <>), lifetime);
// keyless PubSub async
services.Add(typeof(AsyncMessageBrokerCore <>), lifetime);
services.Add(typeof(IAsyncPublisher <>), typeof(AsyncMessageBroker <>), lifetime);
services.Add(typeof(IAsyncSubscriber <>), typeof(AsyncMessageBroker <>), lifetime);
services.Add(typeof(BufferedAsyncMessageBrokerCore <>), lifetime);
services.Add(typeof(IBufferedAsyncPublisher <>), typeof(BufferedAsyncMessageBroker <>), lifetime);
services.Add(typeof(IBufferedAsyncSubscriber <>), typeof(BufferedAsyncMessageBroker <>), lifetime);
// keyed PubSub
services.Add(typeof(MessageBrokerCore <,>), lifetime);
services.Add(typeof(IPublisher <,>), typeof(MessageBroker <,>), lifetime);
services.Add(typeof(ISubscriber <,>), typeof(MessageBroker <,>), lifetime);
// keyed PubSub async
services.Add(typeof(AsyncMessageBrokerCore <,>), lifetime);
services.Add(typeof(IAsyncPublisher <,>), typeof(AsyncMessageBroker <,>), lifetime);
services.Add(typeof(IAsyncSubscriber <,>), typeof(AsyncMessageBroker <,>), lifetime);
}
var lifetime2 = options.RequestHandlerLifetime; // requesthandler lifetime
// RequestHandler
services.Add(typeof(IRequestHandler <,>), typeof(RequestHandler <,>), lifetime2);
services.Add(typeof(IAsyncRequestHandler <,>), typeof(AsyncRequestHandler <,>), lifetime2);
// RequestAll
services.Add(typeof(IRequestAllHandler <,>), typeof(RequestAllHandler <,>), lifetime2);
services.Add(typeof(IAsyncRequestAllHandler <,>), typeof(AsyncRequestAllHandler <,>), lifetime2);
// auto registration is .NET only.
if (options.EnableAutoRegistration)
{
// auto register filter and requesthandler
// request handler is option's lifetime, filter is transient
if (options.autoregistrationAssemblies == null && options.autoregistrationTypes == null)
{
AddRequestHandlerAndFilterFromTypes(services, lifetime2, TypeCollector.CollectFromCurrentDomain());
}
else
{
var fromAssemblies = (options.autoregistrationAssemblies != null)
? TypeCollector.CollectFromAssemblies(options.autoregistrationAssemblies)
: Enumerable.Empty <Type>();
var types = options.autoregistrationTypes ?? Enumerable.Empty <Type>();
AddRequestHandlerAndFilterFromTypes(services, lifetime2, fromAssemblies.Concat(types).Distinct());
}
}
#endif
return(services);
}
