简单的注入器-ASP.NET 5 Identity和RavenDB的困难

Question

I am attempting to use SimpleInjector with ASP.NET 5 on an MVC application, and am running into a major problem getting it wired up right.

I run a RavenDB database, and as such I have methods for instantiating instances to it, which is what I use when registering the interfaces, like this;

private void InitializeContainer(IApplicationBuilder app) {

    container.CrossWire<IUserStore<AppUser>>(app);
    container.CrossWire<UserManager<AppUser>>(app);
    container.CrossWire<SignInManager<AppUser>>(app);
    container.CrossWire<ILoggerFactory>(app);

    container.Register<IDocumentStore>(RavenDatabase.OpenDatabase);

    container.Register<IDocumentSession>(RavenDatabase.OpenSession);

    container.Register<IAsyncDocumentSession>(RavenDatabase.OpenAsyncSession);

    container.Register<ILookupNormalizer>(() => new LowerInvariantLookupNormalizer());

    container.Register<IPasswordHasher<AppUser>>(() => new PasswordHasher<AppUser>());
}

The problem seems to be with IUserStore . When I try to load up the application, I get this exception..

Unable to resolve service for type 'Raven.Client.IAsyncDocumentSession' while attempting to activate 'App.Identity.UserStore`1[App.Identity.AppUser]'.

I'm really uncertain why this is, though. I've registered IAsyncDocumentSession , so why can't it inject it? I've also tried it like this...

container.Register<IUserStore<AppUser>>(RavenDatabase.UserStore);

With a method defined as such...

public static UserStore<AppUser> UserStore() {
    // check to see if we even have a session factory to get a session from
    if (documentStore == null)
        OpenDatabase();

    return new UserStore<AppUser>(documentStore.OpenAsyncSession());
}

But I still continue to get the exception. I'm at a loss, here. This is my first time using Simple Injector.

Stack Trace

System.InvalidOperationException

Unable to resolve service for type 'Raven.Client.IAsyncDocumentSession' while attempting to activate 'App.Identity.UserStore`1[App.Identity.AppUser]'.
at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.PopulateCallSites(ServiceProvider provider, ISet<Type> callSiteChain, ParameterInfo[] parameters, Boolean throwIfCallSiteNotFound) 
at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.CreateCallSite(ServiceProvider provider, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetResolveCallSite(IService service, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetServiceCallSite(Type serviceType, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.PopulateCallSites(ServiceProvider provider, ISet<Type> callSiteChain, ParameterInfo[] parameters, Boolean throwIfCallSiteNotFound) 
at Microsoft.Extensions.DependencyInjection.ServiceLookup.Service.CreateCallSite(ServiceProvider provider, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetResolveCallSite(IService service, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetServiceCallSite(Type serviceType, ISet<Type> callSiteChain) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.CreateServiceAccessor(Type serviceType, ServiceProvider serviceProvider) 
at System.Collections.Concurrent.ConcurrentDictionaryExtensions.GetOrAdd<TKey, TValue, TArg>(ConcurrentDictionary<TKey, TValue> dictionary, TKey key, Func<TKey, TArg, TValue> valueFactory, TArg arg) 
at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType) 
at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService(IServiceProvider provider, Type serviceType) 
at Microsoft.Extensions.DependencyInjection.ServiceProviderExtensions.GetRequiredService<T>(IServiceProvider provider) 
.lambda_method(Closure ) 
at SimpleInjector.InstanceProducer.BuildAndReplaceInstanceCreatorAndCreateFirstInstance() 
at SimpleInjector.InstanceProducer.GetInstance()

SimpleInjector.ActivationException

Unable to resolve service for type 'Raven.Client.IAsyncDocumentSession' while attempting to activate 'App.Identity.UserStore`1[App.Identity.AppUser]'.
at SimpleInjector.InstanceProducer.GetInstance() 
at SimpleInjector.InstanceProducer.VerifyInstanceCreation()

System.InvalidOperationException

The configuration is invalid. Creating the instance for type LoginController failed. Unable to resolve service for type 'Raven.Client.IAsyncDocumentSession' while attempting to activate 'App.Identity.UserStore`1[App.Identity.AppUser]'.

System.Reflection.TargetInvocationException

Exception has been thrown by the target of an invocation.
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) 
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) 
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) 
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) 
at Microsoft.AspNet.Hosting.Startup.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder) 
at Microsoft.AspNet.Hosting.Startup.ConfigureBuilder.<>c__DisplayClass4_0.<Build>b__0(IApplicationBuilder builder) 
at Microsoft.AspNet.Hosting.Internal.AutoRequestServicesStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder builder) 
at Microsoft.AspNet.Hosting.Internal.HostingEngine.BuildApplication()

Answer 1

As far as I can see, this problem is not related to Simple Injector. From your registrations, and the exception information I see the following is the case:

• You are resolving a LoginController from Simple Injector.
• This LoginController depends on Raven.Client.IAsyncDocumentSession .
• IAsyncDocumentSession is cross-wired from the ASP.NET configuration system to Simple Injector using CrossWire<IAsyncDocumentSession> .
• IAsyncDocumentSession is registered in the ASP.NET configuration system.
• The implementation of IAsyncDocumentSession that is registered in ASP.NET depends on UserStore<AppUser> .
• The ASP.NET configuration system is unable to resolve that IAsyncDocumentSession registration and throws the exception stating:

Unable to resolve service for type 'Raven.Client.IAsyncDocumentSession' while attempting to activate 'App.Identity.UserStore`1[App.Identity.AppUser]'.

In other words, you would get the same exception when you would either resolve LoginController or IAsyncDocumentSession from the ASP.NET configuration system. Just call one of the following methods and you will see the same error:

app.ApplicationServices.GetRequiredService<LoginController>();
// or
app.ApplicationServices.GetRequiredService<IAsyncDocumentSession>();

I think that the IAsyncDocumentSession implementation depends on UserStore<T> or IUserStore<T> , but you haven't registered it in the ASP.NET configuration system.