将Autofac与Rebus一起使用时没有可用的MessageContext

我在下面的代码中得到了InvalidOperationException。我确信我对autofac IoC和Rebus缺乏了解,这是我犯的错误。

System.InvalidOperationException未处理

Message=没有可用的消息上下文-MessageContext实例将仅在处理消息期间设置,并且仅在工作线程上可用。

StackTrace的一部分:

at Rebus.MessageContext.GetCurrent()
at Rebus.Autofac.AutofacContainerAdapter.GetHandlerInstancesFor[T]()
at RebusAutofacDemo.Program.Main(String[] args) in c:\RebusAutofacDemo\Program.cs:line 45
[cut]

因此,当我在Console应用程序中使用下面的代码时,我会得到上面的错误。

class Program
{
   static void Main(string[] args)
    {
        var builder = new Autofac.ContainerBuilder();
        builder.RegisterType<MyHandler>();
        var container = builder.Build();
        var adapter = new AutofacContainerAdapter(container);
        var bus = Configure.With(adapter)
            .Transport(t => t.UseAzureServiceBus("myConnectionstring", "my_input_queue", "error"))
            .CreateBus()
            .Start();

        adapter.GetHandlerInstancesFor<MyHandler>();  // THIS IS THE LINE WITH THE ERROR

        var timer = new System.Timers.Timer();
        timer.Elapsed += delegate { bus.SendLocal(new MyMessage{ Body = DateTime.Now.ToString()}); };
        timer.Interval = 1000;
        timer.Start();

        Console.ReadLine();
    }
}

public class MyMessage
{
    public string Body { get; set; }
}

public class MyHandler : IHandleMessages<MyMessage>
{
    private readonly IBus _bus;
    public MyHandler(IBus bus)
    {
        _bus = bus;
    }

    public void Handle(MyMessage message)
    {
        Console.WriteLine(message);
    }
}

为了完整起见,已将其添加到app.config中:

<configSections>
  <section name="rebus" type="Rebus.Configuration.RebusConfigurationSection, Rebus" />
</configSections>

<rebus inputQueue="my-app.input" errorQueue="my-app.error" workers="1">
  <endpoints>
    <!-- <add messages="SomeAssembly" endpoint="another-app.input"/> -->
  </endpoints>
</rebus>