WCF and Autofac w/Extensionless Services

Question

I am having a heck of a time trying to get this to work.

I want Autofac to manage my WCF services and use extension less services.

Any ideas why this does not work?

namespace SAIF.Services.WCF.Host
{
    using System;
    using System.ServiceModel.Activation;
    using System.Web;
    using System.Web.Routing;
    using Autofac;
    using Autofac.Integration.Wcf;
    using SAIF.Core.Domain;
    using SAIF.Core.Domain.Model;
    using SAIF.Repositories;
    using SAIF.Services.WCF.Core;
    using SAIF.Services.WCF.Services;

    public class Global : HttpApplication
    {
        protected void Application_Start(object sender, EventArgs e)
        {
            // Create Routes
            var factory = new AutofacServiceHostFactory();
            RouteTable.Routes.Add(new ServiceRoute("FileService", factory, typeof(SAIF.Services.WCF.Core.IFileService)));
            RouteTable.Routes.Add(new ServiceRoute("WebContext", factory, typeof(SAIF.Services.WCF.Core.IWebContextService)));

            // Autofac Config
            var builder = new ContainerBuilder();

            builder.Register(x => new EFUnitOfWork())
                .As<EFUnitOfWork>()
                .As<IUnitOfWork>();

            builder.RegisterGeneric(typeof(Repository<>))
                .As(typeof(IRepository<>));

            builder.Register(x => new FileService())
                .As<IFileService>();

            builder.Register(x => new WebContextService(x.Resolve<IRepository<WebContextItem>>(), x.Resolve<IUnitOfWork>()))
                .As<IWebContextService>();

            AutofacHostFactory.Container = builder.Build();
        }
    }
}

are you able to step through? any errors? what's in the container at the end? — EdmundYeung99, Oct 31 '12 at 20:18
Everything looks good when stepping through it. COntainer builds, registrations are there, just the code does not work! — Sam, Oct 31 '12 at 20:45

score 1 · Answer 1 · edited May 23 '17 at 12:21

~~I'm not sure if the Application_Start method of the Global.asax gets called by WAS in IIS.~~

This SO answer seems to be similar to what you are looking for and links to this blog post

Implement an AppInitialize method and put it in the App_Code folder.

public class InitialiseService
{
   /// <summary>
   /// AppInitialize method to register the IOC container.
   /// </summary>
   public static void AppInitialize()
   {
       // Create Routes
       var factory = new AutofacServiceHostFactory();
       RouteTable.Routes.Add(new ServiceRoute("FileService", factory, typeof(SAIF.Services.WCF.Core.IFileService)));
       RouteTable.Routes.Add(new ServiceRoute("WebContext", factory, typeof(SAIF.Services.WCF.Core.IWebContextService)));

       // Autofac Config
       var builder = new ContainerBuilder();

       //...the rest of your code...
   }
}

Another SO answer talks about using ServiceHostFactory rather than WebServiceHostFactory.

Can you try using that instead of the AutofacServiceHostFactory?

Update

This is an old question/answer but I have since tried following the instructions on Autofac documentation

see https://code.google.com/p/autofac/wiki/WcfIntegration#WAS_Hosting_Extensionless_Services

A key part to extensionless routing in is adding the UrlRoutingModule

Autofac has it's own implementations of Service Factories `AutofacServiceHostFactory` — Sam, Oct 31 '12 at 21:44
Any improvement on that ? I got a similar problem. See my detailed steps at [link](http://stackoverflow.com/questions/21093942) — mberube.Net, Jan 13 '14 at 15:19

WCF and Autofac w/Extensionless Services

1 Answers1