Configuring Autofac with Owin Web API in AppBuilder.Map block with mixed MVC

Question

I want to move the web API code to a .Map block ("/ api" inner =>) so that I can set the following configuration so as not to affect the MVC parts of my application.

config.SuppressDefaultHostAuthentication();
config.Filters.Add(new HostAuthenticationFilter(Startup.OAuthBearerOptions.AuthenticationType))

So, I tried to enable web api logic in .Map, but now I have broken Autofac and will no longer resolve dependencies. that's what i originally had.

public void Configuration(IAppBuilder app)
{
    var config = new HttpConfiguration();
    var builder = new ContainerBuilder();
    BuildContainer(builder);
    this._container = builder.Build();
    // Middlewares
    app.UseAutofacMiddleware(this._container); //should be the first middleware added to IAppBuilder
    app.UseAutofacMvc();     
    // WebApi config
    config.DependencyResolver = new AutofacWebApiDependencyResolver(this._container);

    //MVC
    DependencyResolver.SetResolver(new AutofacDependencyResolver(this._container)); 
    this.ConfigureAuth(app, _container.Resolve());
    WebApiConfig.Register(config);
    app.UseAutofacWebApi(config); 
    app.UseWebApi(config);
}

Here is what I tried to do, but I couldn’t resolve autofac dependencies with the web api anymore.

public void Configuration(IAppBuilder app)
{
    var builder = new ContainerBuilder();
    BuildContainer(builder);
    this._container = builder.Build();
    // Middlewares
    app.UseAutofacMiddleware(this._container); //should be the first middleware added to IAppBuilder
    app.UseAutofacMvc(); 
    //MVC
    DependencyResolver.SetResolver(new AutofacDependencyResolver(this._container)); 
    this.ConfigureAuth(app, _container.Resolve());

    app.Map(
        "/api",
        inner =>
            {
            var config = new HttpConfiguration();
            config.DependencyResolver = new AutofacWebApiDependencyResolver(this._container);
            WebApiConfig.Register(config);
            //inner.UseAutofacMiddleware(this._container); //should be the first middleware added to IAppBuilder
            inner.UseAutofacWebApi(config); //Web.API enable lifetime scope created during the OWIN request to extend into WebAPI.
            inner.UseWebApi(config);
        });
}

Also, if I do everything that looks wrong, let me know.

Answer 1

My problem was that WebApiConfig was still logging in

protected void Application_Start() 
{
  GlobalConfiguration.Configure(WebApiConfig.Register);
}

autofac , . , (, ).

, :

public void Configuration(IAppBuilder app)
{
        var builder = new ContainerBuilder();
        BuildContainer(builder);
        this._container = builder.Build();
        // OWIN Middlewares
        app.UseAutofacMiddleware(this._container); //should be the first middleware added to IAppBuilder
        app.UseAutofacMvc(); // Autofac MVC Integration -- http://alexmg.com/owin-support-for-the-web-api-2-and-mvc-5-integrations-in-autofac/
        //MVC
        DependencyResolver.SetResolver(new AutofacDependencyResolver(this._container)); //TODO: Still needed with OWIN?
        //app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
        this.ConfigureAuth(app, _container.Resolve());
        //WEB API config - Make Web Api urls use the config, avoiding ASP.NET MVC from inheriting the HttpConfig.
        app.Map(
            "/api",
            inner =>
                {
                var config = new HttpConfiguration();
                config.DependencyResolver = new AutofacWebApiDependencyResolver(this._container);
                WebApiConfig.Register(config);
                inner.UseAutofacWebApi(config); //Web.API enable lifetime scope created during the OWIN request to extend into WebAPI.
                inner.UseWebApi(config);
            });
}