Having an issue getting a service instance in my controller. Followed the documentation from autofac's website but still getting an error. "None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type 'MyAssembly.Controllers.HeartBeatController' can be invoked with the available services and parameters:\r\nCannot resolve parameter 'MyAssembly.IO.IConfig config' of constructor 'Void .ctor(MyAssembly.IO.IConfig)'."
Here is my Global.asax file
public class WebApiApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
var builder = new ContainerBuilder();
var config = GlobalConfiguration.Configuration;
WebApiConfig.Register(config);
builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
var container = builder.Build();
BuildServices(builder);
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
config.EnsureInitialized();
log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config")));
}
private void BuildServices(ContainerBuilder builder)
{
builder.RegisterType<Config>().As<IConfig>().InstancePerRequest();
}
}
And here is my interface definition and class. Which is defined in the same assembly.
public interface IConfig
{
string GetSetting(string key);
T GetSetting<T>(string key);
}
public class Config : IConfig
{
public string GetSetting(string key)
{
return ConfigurationManager.AppSettings[key];
}
public T GetSetting<T>(string key)
{
var setting = GetSetting(key);
return setting != null ? (T)System.Convert.ChangeType(setting, typeof(T)) : default(T);
}
}
This is so ridiculous but I failed to build the services before the container. Oversight on my part and the below works.
BuildServices(builder);
var container = builder.Build();
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
config.EnsureInitialized();
Related
My global.asax looks like below
private void BuildIocContainer()
{
var builder = new ContainerBuilder();
builder.RegisterModule(new BootstrapModule());
var container = builder.Build();
DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
GlobalConfiguration.Configuration.DependencyResolver = new AutofacWebApiDependencyResolver(container); //Set the WebApi DependencyResolver
}
protected void Application_Start()
{
BuildIocContainer();
AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
I have built a bootstrap module for autofac like the one below
public class BootstrapModule : Autofac.Module
{
private Assembly AssemblyOf<T>()
{
return typeof(T).Assembly;
}
private Assembly WebAssembly
{
get { return Assembly.GetExecutingAssembly(); }
}
private void RegisterMvc(ContainerBuilder builder)
{
builder.RegisterType<AsyncControllerActionInvoker>()
.As<IActionInvoker>();
builder.RegisterControllers(WebAssembly)
.InjectActionInvoker();
builder.RegisterApiControllers(WebAssembly).InjectActionInvoker();
}
private void RegisterLogger(ContainerBuilder builder)
{
builder.Register(CreateLogger)
.SingleInstance();
builder.Register(_ => new NLogWrapper(LogManager.GetLogger("DefaultLogger")))
.As<Logging.ILogger>()
.SingleInstance();
}
private static System.Func<Type, Logging.ILogger> CreateLogger(IComponentContext componentContext)
{
return type => new NLogWrapper(LogManager.GetLogger(type.FullName));
}
protected override void Load(ContainerBuilder builder)
{
RegisterLogger(builder);
RegisterMvc(builder);
builder.RegisterAssemblyTypes(WebAssembly)
.AsImplementedInterfaces();
builder.RegisterType<UserService>()
.As<IUserService>()
.InstancePerRequest();
builder.RegisterAssemblyTypes(typeof(IUserService).Assembly)
.AsImplementedInterfaces();
builder.RegisterAssemblyTypes(typeof(IUserRepository).Assembly)
.AsImplementedInterfaces();
builder.RegisterFilterProvider();
}
}
Now, when I try to hit account controller through postman client,
private IUserService _userService;
public AccountController(IUserService userService)
{
_userService = userService;
}
// POST api/Account/Register
[AllowAnonymous]
[Route("Register")]
public HttpStatusCode Register(User model)
{
if (!ModelState.IsValid)
{
return HttpStatusCode.BadRequest;
}
// TODO : Write mapper if needed
var user = new ToolUser()
{
FirstName = model.FirstName,
LastName = model.LastName,
EmailID = model.EmailID,
DOB = Convert.ToDateTime(model.DateOfBirth),
Gender = model.Gender.ToString(),
TenandID = model.TenantID,
Password = model.Password
};
HttpStatusCode result = _userService.RegisterUser(user);
return result;
}
I get the error
"An error occurred when trying to create a controller of type 'AccountController'. Make sure that the controller has a parameterless public constructor."
What am I doing wrong?
You should have something like
HttpConfiguration config = new HttpConfiguration();
somewhere, which you use to register your routes etc.
Pass that config to your BuildIocContainer() mehod and add the line
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);
instead of
GlobalConfiguration.Configuration.DependencyResolver = new AutofacWebApiDependencyResolver(container); //Set the WebApi DependencyResolver
Hope that helps
I have web api controller and i want to perform an integration tests. So I followed the article here to configured the in-memory Web API host.
My integration test and web api are two different projects in same VS solution.
Below is the code
Web API Controller
public class DocumentController : ApiController
{
public DocumentController(IDomainService domainService)
{
_domainService = domainService;
}
[HttpPost]
public async Task<IEnumerable<string>> Update([FromBody]IEnumerable<Document> request)
{
return await _domainService.Update(request).ConfigureAwait(false);
}
}
Integration Test
[TestClass]
public class IntegrationTests
{
private HttpServer _server;
private string _url = "http://www.strathweb.com/";
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
config.Routes.MapHttpRoute(name: "Default", routeTemplate: "api/{controller}/{action}/{id}", defaults: new { id = RouteParameter.Optional });
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
config.MessageHandlers.Add()
_server = new HttpServer(config);
}
[TestMethod]
public void UpdateTransformedDocuments()
{
var doc = new Document()
{
// set all properties
}
var client = new HttpClient(_server);
var request = createRequest<Document>("api/document/Update", "application/json", HttpMethod.Post, doc, new JsonMediaTypeFormatter());
using (var response = client.SendAsync(request).Result)
{
// do something with response here
}
}
private HttpRequestMessage createRequest<T>(string url, string mthv, HttpMethod method, T content, MediaTypeFormatter formatter) where T : class
{
Create HttpRequestMessage here
}
}
However im getting error
StatusCode: 404, ReasonPhrase: 'Not Found'
How & where do I tell the HttpServer to execute DocumentController?
Update1
So I fixed above error by changing the [TestIntialize] code as below
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
UnityWebApiActivator.Start();
WebApiConfig.Register(config);
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
_server = new HttpServer(config);
}
I don't get 404 error now. However Unity is not able to resolve DocumentController. The HttpResponse contains error
An error occurred when trying to create a controller of type
'DocumentController'. Make sure that the controller has a
parameterless public constructor.
In TestInitialize method I'm calling UnityWebApiActivator.Start() which registers all the require types with Unity.
i resolved my 2nd issue by setting 'HttpConfiguration.DependencyResolver'
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
//UnityWebApiActivator.Start();
config.DependencyResolver = new UnityHierarchicalDependencyResolver(UnityConfig.GetConfiguredContainer());
WebApiConfig.Register(config);
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
_server = new HttpServer(config);
}
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.
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.
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!
I am using SignalR in my MVC3 application, and since I have implemented StructureMap Dependency Injection on my controllers I would like to do the same in my hub, but I can't seem to get it working.
Please tell me what's wrong with my codes below:
SignalRSmDependencyResolver.cs
public class SignalRSmDependencyResolver : DefaultDependencyResolver
{
private IContainer _container;
public SignalRSmDependencyResolver(IContainer container)
{
_container = container;
}
public override object GetService(Type serviceType)
{
object service = null;
if (!serviceType.IsAbstract && !serviceType.IsInterface && serviceType.IsClass)
{
// Concrete type resolution
service = _container.GetInstance(serviceType);
}
else
{
// Other type resolution with base fallback
service = _container.TryGetInstance(serviceType) ?? base.GetService(serviceType);
}
return service;
}
public override IEnumerable<object> GetServices(Type serviceType)
{
var objects = _container.GetAllInstances(serviceType).Cast<object>();
objects.Concat(base.GetServices(serviceType));
return objects;
}
}
SignalRExtensionsRegistry.cs
public class SignalRExtensionsRegistry : Registry
{
public SignalRExtensionsRegistry()
{
For<IDependencyResolver>().Add<SignalRSmDependencyResolver>();
}
}
IoC.cs
public static class IoC {
public static IContainer Initialize() {
var container = BootStrapper.Initialize();
container.Configure(x =>
{
x.For<IControllerActivator>().Singleton().Use<StructureMapControllerActivator>();
});
return container;
}
}
public class StructureMapControllerActivator : IControllerActivator {
public StructureMapControllerActivator(IContainer container) {
_container = container;
}
private IContainer _container;
public IController Create(RequestContext requestContext, Type controllerType) {
IController controller = DependencyResolver.Current.GetService(controllerType) as IController;
return controller;
}
}
AppStart_Structuremap.cs
[assembly: WebActivator.PreApplicationStartMethod(typeof(StoreUI.AppStart_Structuremap), "Start")]
namespace MyNameSpace {
public static class AppStart_Structuremap {
public static void Start() {
var container = (IContainer) IoC.Initialize();
DependencyResolver.SetResolver(new StructureMapDependenceyResolver(container));
AspNetHost.SetResolver(new StructureMapDependencyResolver(container));
}
}
}
NotificationsHub.cs
[HubName("notificationsHub")]
public class NotificationsHub : Hub
{
#region Declarations
private readonly IUserService userService;
#endregion
#region Constructor
public NotificationsHub(IUserService userService)
{
this.userService = userService;
}
#endregion
public void updateServer(string message)
{
Clients.updateClient(message);
}
}
Thanks
Getting Structuremap into SignalR is actually pretty easy. First you want to create your own resolver:
StructureMap Resolver
Usings:
using SignalR.Infrastructure;
using StructureMap;
Class:
public class StructureMapResolver : DefaultDependencyResolver
{
private IContainer _container;
public StructureMapResolver(IContainer container)
{
_container = container;
}
public override object GetService(Type serviceType)
{
object service = null;
if (!serviceType.IsAbstract && !serviceType.IsInterface && serviceType.IsClass)
{
// Concrete type resolution
service = _container.GetInstance(serviceType);
}
else
{
// Other type resolution with base fallback
service = _container.TryGetInstance(serviceType) ?? base.GetService(serviceType);
}
return service;
}
public override IEnumerable<object> GetServices(Type serviceType)
{
var objects = _container.GetAllInstances(serviceType).Cast<object>();
return objects.Concat(base.GetServices(serviceType));
}
}
The idea here is to try and use your container to resolve the dependencies, if you do not have the dependency wired up, pass it through to the default resolver. This way you don't have to worry about all of the other dependencies in SignalR and can focus only on the stuff you want to inject into (Hubs, ConnectionIdFactory, MessageBus, etc.).
Bindings for Resolver and Hub
Next you will want to register this in your container (i like using registries):
Usings:
using SignalR.Infrastructure;
using StructureMap.Configuration.DSL;
Class:
public class ExtensionsRegistry : Registry
{
public ExtensionsRegistry()
{
For<IDependencyResolver>().Add<StructureMapResolver>();
}
}
Resolver Replacement
Finally you will want to tell SignalR to use your resolver instead of the default:
Global::Application_Start or WebActivator::Pre_Start
Usings:
using SignalR.Hosting.AspNet;
using SignalR.Infrastructure;
Application_Start:
// Make sure you build up the container first
AspNetHost.SetResolver(StructureMap.ObjectFactory.GetInstance<IDependencyResolver>());
Silly Hub with injected dependencies
Now you can just inject any dependencies your container knows about into the hubs themselves:
[HubName("defaultHub")]
public class DefaultHub : Hub, IDisconnect
{
private readonly IRepository _repo;
public DefaultHub(IRepository repo)
{
_repo = repo;
}
public void Connect()
{
Caller.setUser(Context.ConnectionId);
Clients.addMessage(string.Format("{0} has connected", Context.ConnectionId));
}
public void MessageSender(string message)
{
Caller.addMessage(_repo.RepositoryMessage());
Clients.addMessage(message);
}
public Task Disconnect()
{
var clientId = this.Context.ConnectionId;
return Task.Factory.StartNew(() => { Clients.addMessage(string.Format("{0} has disconnected", clientId)); });
}
}
Have you followed the instructions here:- https://github.com/SignalR/SignalR/wiki/Extensibility ?
You'll need to use AspNetHost.SetResolver.
I know this is an old thread, but for those who are wondering where is the AspNetHost.SetResolver in the newer version of signalR, you can use this in the App_Start StructuremapMvc.cs:
public static void Start() {
IContainer container = IoC.Initialize();
GlobalHost.DependencyResolver = new SignalRSmDependencyResolver(container); // for signalR
DependencyResolver.SetResolver(new StructureMapDependencyResolver(container));
GlobalConfiguration.Configuration.DependencyResolver = new StructureMapDependencyResolver(container);
}
Add something like this to a file in your App_Start folder. This code snippet is for Ninject, so just replace AspNetHost.SetResolver()
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
using Ninject;
using SignalR.Hosting.AspNet;
using SignalR.Infrastructure;
using SignalR.Ninject;
using Web.Models;
[assembly: WebActivator.PreApplicationStartMethod(typeof(Web.App_Start.NinjectSignalR), "Start")]
namespace Web.App_Start
{
public static class NinjectSignalR
{
public static void Start()
{
IKernel kernel = CreateKernel();
// switch this line to the structuremap resolver
AspNetHost.SetResolver(new NinjectDependencyResolver(kernel));
}
private static IKernel CreateKernel()
{
var kernel = new StandardKernel();
RegisterServices(kernel);
return kernel;
}
private static void RegisterServices(IKernel kernel)
{
// add your services here
//kernel.Bind<IRepository>().To<Repository>();
}
}
}
I would like to use property injection in an MVC3 application. I have configured Unity 2 as a DI container and everything works just fine by constructor injection but I can't figure out how to use property injection. I marked properties with the [Dependency] attribute but it doesn't work.
public class UnityDependencyResolver : IDependencyResolver
{
IUnityContainer _container;
public UnityDependencyResolver(IUnityContainer container)
{
_container = container;
}
public object GetService(Type serviceType)
{
try
{
return _container.Resolve(serviceType);
}
catch (Exception)
{
return null;
}
}
public IEnumerable<object> GetServices(Type serviceType)
{
try
{
return _container.ResolveAll(serviceType);
}
catch (Exception)
{
return new List<object>();
}
}
}
In Global.asax I have the following:
var container = new UnityContainer();
var section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
section.Configure(container);
DependencyResolver.SetResolver(new UnityDependencyResolver(container));
Any help is appreciated.