Autofac dependency injection in implementation of OAuthAuthorizationServerProvider

Question

I am creating a Web Api application and I want to use bearer tokens for the user authentication. I implemented the token logic, following this post and everything seems to w

Answer 1

To use dependency injection in SimpleAuthorizationServerProvider you have to register IOAuthAuthorizationServerProvider to the Autofac container just like any other type. You can do something like this:

builder
  .RegisterType()
  .As()
  .PropertiesAutowired() // to automatically resolve IUserService
  .SingleInstance(); // you only need one instance of this provider

You also need to pass the container to the ConfigureOAuth method and let Autofac resolve your instance like this:

var oAuthServerOptions = new OAuthAuthorizationServerOptions
{
    AllowInsecureHttp = true,
    TokenEndpointPath = new PathString("/token"),
    AccessTokenExpireTimeSpan = TimeSpan.FromDays(1),
    Provider = container.Resolve()
};

You should always use single instances if your properties within the object don't change via external data (let's say you have a property which you set in the controller which dependents upon some information stored in the database - in this case you should use InstancePerRequest).