C# 在ViewEngine ASP.NET MVC 3中获取属性值

我正在编写自己的视图引擎

public class MyViewEngine : RazorViewEngine
{

    public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)
    {
        // Here, how do I get attributes defined on top of the Action ?
    }    
}

上面的问题是如何在控制器上定义属性。但我需要在动作中定义属性

public class MyViewEngine : RazorViewEngine
{
    public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)
    {
        var controllerType = controllerContext.Controller.GetType();
        var actionDescriptor = 
            new ReflectedControllerDescriptor(controllerType)
            .FindAction(
                controllerContext, 
                controllerContext.RouteData.GetRequiredString("action")
            );
        var attributes = actionDescriptor.GetCustomAttributes(typeof(...), false);

        // TODO: do something with the attributes that you retrieved
        // from the current action
    }    
}