CODEWITHSUNDEEP
asp.net-web-apiarchitecturerepositoryautofacunit-of-work
Karthik G
Karthik G

Reputation: 1262

Managing AutoFac object creation for UnitOfWork

I am new to architecture, I am in the process of learning and designing an application end to end. I have the below architecture and am using Autofac to manage object creation.

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All businessobject contracts have been setup on webapi startup and that is the only startup which can actually startup all my autofac configurations/modules.

I use UnitOfWork/Repository pattern and it resides beyond my business layer, I do not want to refer the UnitOfWork in my WebAPi but i cannot startup UnitOfWork otherwise.

Can someone please give me some inputs on what should be my architecture/design/autofac unitofwork implementation?

Upvotes: 1

Views: 417

Answers (1)

garethb
garethb

Reputation: 4041

In App_start register web project specific dependencies (controllers, etc). Have a static method in BL layer which registers unit of work, repositories, etc. Call this static method in App_start when all the web dependencies are being registered as below:

//App_Start (web project)
var builder = new ContainerBuilder();
var config = GlobalConfiguration.Configuration;
MyProject.BusinessLayer.RegisterDependancies.Register(builder); <-- Register Unit of Work here in static BL method
builder.RegisterControllers(typeof(MvcApplication).Assembly);
builder.RegisterApiControllers(typeof(MvcApplication).Assembly);
builder.RegisterModule<AutofacWebTypesModule>();
builder.RegisterWebApiFilterProvider(config);
builder.RegisterModule(new AutofacModules.AutoMapperModule());
builder.RegisterModule(new AutofacModules.Log4NetModule());

var container = builder.Build();

DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
config.DependencyResolver = new AutofacWebApiDependencyResolver(container);


//Static method in BL
namespace MyProject.BusinessLayer
{
    public static class RegisterDependancies
    {
        public static void Register(ContainerBuilder builder)
        {
            builder.RegisterType<MyContext>().As<IDataContextAsync>().InstancePerLifetimeScope();
            builder.RegisterType<UnitOfWork>().As<IUnitOfWorkAsync>().InstancePerLifetimeScope();
            builder.RegisterGeneric(typeof(Repository<>)).As(typeof(IRepositoryAsync<>)).InstancePerLifetimeScope();
            builder.RegisterAssemblyTypes(typeof(BusinessService).Assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces().InstancePerLifetimeScope();
        }
    }
}

Upvotes: 1

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