如何创建自定义上下文

Question

我需要实现一组接口，在每个实现中，我需要访问调用上下文中可用的值，但不是接口方法的一部分。此外，调用上下文将实例作为依赖项接收。

为了解决这个问题，我想看看是否有某种方法可以创建一个类似于HttpContext的范围内容，但寿命有限。

这就是我设想的方式：OrderProcessor类使userId值可用于using类实例的UserContext范围内的所有方法调用。

问题是：这是否可能，如果是这样的话？

public class OrderProcessor
{
    private readonly IBusiness _business;

    public OrderProcessor(IBusiness business)
    {
        _business = business; // DI is providing us with an instance of MrBusiness
    }

    public static void ProcessOrders(string userId)
    {
        using (new UserContext(userId))
        {
            var thisUsersOrders = _business.GetOrders();
        }
    }
}

public interface IBusiness
{
    List<Order> GetOrders();
}

public class MrBusiness : IBusiness
{
    public List<Order> GetOrders()
    {
        var userId = UserContextManager.Current.UserId;

        // Use the userId to retrieve data from somewhere
    }
}

public class UserContextManager
{
    public static UserContext Current
    {
        get
        {
            // If this had been a web application I could perhaps have used the Http context, hmm?
        }
    }
}

public class UserContext : IDisposable
{
    public string UserId { get; }

    public UserContext(string userId)
    {
        UserId = userId;
    }

    public void Dispose()
    {
    }
}