使用Autofac提供静态工厂导出的类型

发布于 2024-12-10 11:50:35 字数 241 浏览 1 评论 0原文

我有一个依赖项，它使用其静态 ServiceManager 提供许多服务。它还提供了可用类型的列表。

Type[] ServiceManager.GetServiceTypes();
object GetService(Type t);

在 Autofac 模块中，我想枚举这些类型并注册它们的“动态实例化”。每次请求实例时都调用 ServiceManager.GetService ，这一点很重要。

原文

I have a dependency which provides a number of services using its static ServiceManager. It also provides a list of available types.

Type[] ServiceManager.GetServiceTypes();
object GetService(Type t);

In an Autofac Module, I'd like to enumerate these types and register 'dynamic instantiation' of them. It's important that I call ServiceManager.GetService each time an instance is requested.

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心舞飞扬 2024-12-17 11:50:35

我最终使用了自己的 RegistrationBuilder，看起来很时髦，但它确实有效。我错过了一个明显的技巧吗？

        foreach (var type in ServiceManager.GetServiceTypes())
        {
            var rb = RegistrationBuilder.ForDelegate(
                type, 
                (ctx, parms) => ServiceManager.GetService(type))
                .ExternallyOwned();

            builder.RegisterCallback(
                cr => RegistrationBuilder.RegisterSingleComponent(cr, rb));
        }

I ended up using my own RegistrationBuilder, looks pretty funky but it works. Have I missed an obvious trick?

        foreach (var type in ServiceManager.GetServiceTypes())
        {
            var rb = RegistrationBuilder.ForDelegate(
                type, 
                (ctx, parms) => ServiceManager.GetService(type))
                .ExternallyOwned();

            builder.RegisterCallback(
                cr => RegistrationBuilder.RegisterSingleComponent(cr, rb));
        }

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