WebApi 2 -cant determined DataProtection.IDataProtector Dependency Injection with structuremap - asp.net-web-api

Question

I'm using this beriliant project for base of my MVC project.
But when I use WebAPI for project there is problem in IDataProtector injection.
I redesign base and upload here, and add a console project for testing authorizing with WebAPI.
This is structuremap initialization :
private static readonly Lazy<Container> _containerBuilder =
new Lazy<Container>(initStructureMap, LazyThreadSafetyMode.ExecutionAndPublication);
public static IContainer Container
{
get { return _containerBuilder.Value; }
}
return new Container(ioc =>
{
ioc.For<IUnitOfWork>().HybridHttpOrThreadLocalScoped().Use(() => new DbContext());
ioc.For<IDataSerializer<AuthenticationTicket>>().Use<TicketSerializer>();
ioc.For<ISecureDataFormat<AuthenticationTicket>>().Use<SecureDataFormat<AuthenticationTicket>>();
});
and in WebApiConfig class DI is like this:
var container = StructuremapMvc.Container;
GlobalConfiguration.Configuration.Services.Replace(
typeof(IHttpControllerActivator), new StructureMapHttpControllerActivator(container));
in my startup I create dataprotector with IAppBuilder :
public void ConfigureAuth(IAppBuilder app)
{
StructuremapMvc.Container.Configure(config =>
{
config.For<IDataProtectionProvider>()
.HybridHttpOrThreadLocalScoped()
.Use(() => app.GetDataProtectionProvider());
});
}
It start after WebApiConfig and IDataProtection not work in WebApi. my ServiceLayer is in separate project and DataProtection need to inject there.

Answer 1

you need add two class to your project :
1-StructureMapDependencyScope Class
using StructureMap;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Http.Dependencies;
namespace Project.Helpers
{
public class StructureMapDependencyScope : IDependencyScope
{
protected readonly IContainer Container;
public StructureMapDependencyScope(IContainer container)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
this.Container = container;
}
public void Dispose()
{
this.Container.Dispose();
}
public object GetService(Type serviceType)
{
if (serviceType == null)
{
return null;
}
try
{
return serviceType.IsAbstract || serviceType.IsInterface
? this.Container.TryGetInstance(serviceType)
: this.Container.GetInstance(serviceType);
}
catch
{
return null;
}
}
public IEnumerable<object> GetServices(Type serviceType)
{
return this.Container.GetAllInstances(serviceType).Cast<object>();
}
}
}
2-StructureMapDependencyResolver Class
using StructureMap;
using System.Web.Http.Dependencies;
namespace Project.Helpers
{
public class StructureMapDependencyResolver : StructureMapDependencyScope, IDependencyResolver
{
public StructureMapDependencyResolver(IContainer container)
: base(container)
{
}
public IDependencyScope BeginScope()
{
IContainer child = this.Container.GetNestedContainer();
return new StructureMapDependencyResolver(child);
}
}
}
at the end replace this code with yours in WebApiConfig Class:
// IoC Config
var container = SmObjectFactory.Container;
// Web API configuration and services
config.DependencyResolver = new StructureMapDependencyResolver(container);
read more about Dependency Injection in ASP.NET MVC 4 and Web API by StructureMap here.

Answer 2

You need to explicitly register implementation of IDataProtector in the container.
Sample configuration might looks like this:
ioc.For<IDataProtector>().Use(() => new DpapiDataProtectionProvider().Create("ASP.NET Identity"));
ioc.For<ITextEncoder>().Use<Base64UrlTextEncoder>();
Bear in mind that this specific configuration might not suit your exact needs.
Hope this helps!