Unity type registration for generic factory method

Question

I'm trying to get familiar with asp.net mvc and currently I'm working on setting up logging.

I've had a look at Microsoft.Extensions.Logging and read about how to set it up but I'm struggling with the type registration in unity.

I'd like to setup the type for

public HomeController(ILogger<HomeController> logger)

I can do so with

    private static void RegisterLoggingTypes(IUnityContainer container)
    {
        ILoggerFactory loggerFactory = new LoggerFactory()
            .AddConsole()
            .AddDebug();
        container.RegisterType<ILogger<HomeController>>(new InjectionFactory(c => loggerFactory.CreateLogger<HomeController>()));
    }

But I don't want to have to declare one for every type. I tried

container.RegisterType(typeof(ILogger<>), new InjectionFactory((c,t,s) => loggerFactory.CreateLogger(t)));

But this is returning an ILogger instead of an ILogger(of HomeController)

Any idea how I can do this?

Thanks

Answer 1

I've figured this out. I needed to use reflection to generate the generic method then to invoke that.

        var factoryMethod = typeof(LoggerFactoryExtensions).
                            GetMethods(System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.Public).
                            First(x => x.ContainsGenericParameters);

        container.RegisterType(typeof(ILogger<>), new InjectionFactory((c, t, s) =>
        {
            var genFactoryMethod = factoryMethod.MakeGenericMethod(t.GetGenericArguments()[0]);
            return genFactoryMethod.Invoke(null, new object[] { loggerFactory });
        }));