Fixed LogicalFlow using an ImmutableStack

01-LogicalOperationStack-06.cs

public static class LogicalFlow
{
    private static ImmutableStack<Guid> LogicalStack
    {
        get
        {
            return CallContext.LogicalGetData("LogicalFlow") as ImmutableStack<Guid> ?? ImmutableStack.Create<Guid>();
        }
        set
        {
            CallContext.LogicalSetData("LogicalFlow", value);
        }
    }

    public static Guid CurrentId
    {
        get
        {
            var logicalStack = LogicalStack;
            return logicalStack.IsEmpty ? Guid.Empty : logicalStack.Peek();
        }
    }
    
    public static IDisposable StartScope()
    {
        LogicalStack = LogicalStack.Push(Guid.NewGuid()); // Here's where the CallContext is copied using copy-on-write
        return new Stopper();
    }
    
    private static void StopScope()
    {
        LogicalStack = LogicalStack.Pop();
    }
}