在运行时禁用OData V4元数据和控制器

Question

我们的软件中有几个模块作为单个产品提供.激活模块后,这些功能即可使用.我们希望我们的OData API遵循相同的模式.但是,我无法弄清楚如何为已禁用的模块生成$ metadata ignore控制器.基本上我想确定什么是可用的,而不是应用程序启动时间.

我们使用以下类型的鳕鱼来注册路线:

    static public void Register(HttpConfiguration config)
    {
        config.MapHttpAttributeRoutes();
        var builder = new ODataConventionModelBuilder();
        builder.EntitySet<Module1Entity>("Module1Entities");
        builder.EntitySet<Module2Entity>("Module2Entities");
        config.MapODataServiceRoute("odata", "api", builder.GetEdmModel());
    }

    protected void Application_Start(object sender, EventArgs e)
    {
        GlobalConfiguration.Configure(Register);
    }

因此,如果模块已被激活,我们只希望Module1Entity显示在元数据中.我们已经有代码在模块停用时禁用相关的控制器.

有任何想法吗？

Answer 1

我最终找到了一个解决方案：

static public void Register(HttpConfiguration config)
{
    config.MapHttpAttributeRoutes();
    var builder = new ODataConventionModelBuilder();
    if (IsModule1Enabled)
    {
        builder.EntitySet<Module1Entity>("Module1Entities");
    {
    if (IsModule2Enabled)
    {
       builder.EntitySet<Module2Entity>("Module2Entities");
    }
    var conventions = ODataRoutingConventions.CreateDefault();
    conventions.Insert(0, new MyAttributeRoutingConvention("odata", config));
    config.MapODataServiceRoute("odata", "api", builder.GetEdmModel(), new DefaultODataPathHandler(), conventions);

}

public class MyAttributeRoutingConvention : AttributeRoutingConvention
{
    public MyAttributeRoutingConvention(string routeName, HttpConfiguration configuration) : base(routeName, configuration)
    {
    }

    public override bool ShouldMapController(HttpControllerDescriptor controller)
    {
       if (controller.ControllerType == typeof(Module1EntitiesController))
       {
          return IsModule1Enabled;
       }
       if (controller.ControllerType == typeof(Module2EntitiesController))
       {
          return IsModule2Enabled;
       }
       return base.ShouldMapController(controller);
    }
 }


protected void Application_Start(object sender, EventArgs e)
{
    GlobalConfiguration.Configure(Register);
}