配置Autofac的容器后台线程 [英] Configure Autofac Container for background thread

问题描述

我有许多组件使用InstancePerHtt prequest范围注册一个asp.net MVC的网站，但是我也有一个后台任务，这将运行，不会有一个HttpContext的每隔几个小时。

I have an asp.net MVC site which has many components registered using an InstancePerHttpRequest scope, however I also have a "background task" which will run every few hours which will not have an httpcontext.

我想获得已注册这样我IRepository的实例

I would like to get an instance of my IRepository which has been registered like this

builder.RegisterGeneric(typeof(EfRepository<>)).As(typeof(IRepository<>))
     .InstancePerHttpRequest();

我如何做到这一点从使用Autofac非HTTP上下文？我认为IRepository应该使用InstancePerLifetimeScope

How do I do this from a non http context using Autofac? I think the IRepository should use the InstancePerLifetimeScope

推荐答案

有你如何能做到这几个方面：

There are several ways of how you can do that:

1. 在我看来，最好的一个。如你所说，你可以注册存储库中InstancePerLifetimeScope。它的工作原理与Htt的prequests和LifetimeScopes同样出色。

1. The best one in my opinion. You can register the repository as InstancePerLifetimeScope as you said. It works with HttpRequests and LifetimeScopes equally well.

builder.RegisterGeneric(typeof(EfRepository<>)).As(typeof(IRepository<>))
    .InstancePerLifetimeScope();

您对Htt的prequest登记可从注册差异，LifetimeScope，那么你可以有两个单独的注册：

Your registration for HttpRequest may differ from registration for LifetimeScope, then you can have two separate registrations:

builder.RegisterGeneric(typeof(EfRepository<>)).As(typeof(IRepository<>))
    .WithParameter(...)
    .InstancePerHttpRequest(); // will be resolved per HttpRequest

builder.RegisterGeneric(typeof(EfRepository<>)).As(typeof(IRepository<>))
    .InstancePerLifetimeScope(); // will be resolved per LifetimeScope

您可以明确创建使用其标记的Htt prequest范围。在新的版本通过 MatchingScopeLifetimeTags.RequestLifetimeScopeTag 公开的属性。

You can explicitly create "HttpRequest" scope using its tag. Exposed through MatchingScopeLifetimeTags.RequestLifetimeScopeTag property in new versions.

using (var httpRequestScope = container.BeginLifetimeScope("httpRequest")) // or "AutofacWebRequest" for MVC4/5 integrations
{
    var repository = httpRequestScope.Resolve<IRepository<Entity>>();
}

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