具有Servicebus绑定异常的Azure函数

Question

我们有一个带有ServiceBus绑定(主题/订阅)的Azure函数，当新消息被放到服务总线上时会触发该函数。

我们偶尔(每天一次)在与服务总线相关的Azure函数的应用程序洞察中看到异常。它似乎与Azure函数本身中的代码没有任何联系，但看起来像是一些潜在的连接问题。

我们应该如何处理这些错误，以及如何解决/克服它们？

下面是一些例子：

 Microsoft.ServiceBus.Messaging.MessagingException:
   at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver.EndReceiveCommand (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver+ReceiveAsyncResult+<>c.<GetAsyncSteps>b__12_5 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver.OnEndTryReceive (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver+RetryReceiveAsyncResult+<>c.<GetAsyncSteps>b__15_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver+RetryReceiveAsyncResult.TryReceiveEnd (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver.EndTryReceive (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver.EndReceive (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceivePump+PumpAsyncResult+<>c.<GetAsyncSteps>b__7_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
Inner exception System.ServiceModel.FaultException`1[[System.ServiceModel.ExceptionDetail, System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] handled at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver.EndReceiveCommand:
   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement+DuplexRequestSessionChannel.ThrowIfFaultMessage (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement+DuplexRequestSessionChannel.HandleMessageReceived (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement+DuplexRequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel+RequestAsyncResult+<>c.<GetAsyncSteps>b__9_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement+RedirectContainerChannelFactory`1+RedirectContainerSessionChannel+RequestAsyncResult+<>c__DisplayClass8_1.<GetAsyncSteps>b__4 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement+RedirectContainerChannelFactory`1+RedirectContainerSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel+RequestAsyncResult+<>c.<GetAsyncSteps>b__9_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver.EndReceiveCommand (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)

还有另一个例子：

Microsoft.ServiceBus.Messaging.MessagingCommunicationException:
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver+RetryReceiveAsyncResult.TryReceiveEnd (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver.EndTryReceive (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceiver.EndReceive (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.MessageReceivePump+PumpAsyncResult+<>c.<GetAsyncSteps>b__7_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
Inner exception System.ServiceModel.CommunicationObjectFaultedException handled at Microsoft.ServiceBus.Common.AsyncResult.End:
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement+DuplexRequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel+RequestAsyncResult+<>c.<GetAsyncSteps>b__9_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement+RedirectContainerChannelFactory`1+RedirectContainerSessionChannel+RequestAsyncResult+<>c__DisplayClass8_1.<GetAsyncSteps>b__4 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement+RedirectContainerChannelFactory`1+RedirectContainerSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel+RequestAsyncResult+<>c.<GetAsyncSteps>b__9_3 (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Common.AsyncResult`1.End (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement+ReconnectChannelFactory`1+RequestSessionChannel.EndRequest (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Microsoft.ServiceBus.Messaging.Sbmp.SbmpMessageReceiver.EndReceiveCommand (Microsoft.ServiceBus, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)

Answer 1

它们看起来就像是由某种网络级中断引起的间歇性异常。这些被归类为在微软文档的Exception types中指定的“瞬态异常”：

瞬态异常(...MessagingException、....MessagingCommunicationException)。常规操作:重试操作或通知用户。请注意，client SDK中的RetryPolicy类可以配置为自动处理重试。有关详细信息，请参阅Retry guidance。

不过，我喜欢叫他们Ghostceptions。

根据Exception types section的说法，以下是针对这些异常的常见场景和建议操作：

MessagingException

• 尝试使用属于不同实体类型(例如，主题)的名称或路径创建QueueClient。
• 尝试发送大于256 KB的邮件。服务器或服务在处理请求时遇到错误。

检查代码并确保消息正文只使用可序列化对象(或使用自定义序列化程序)。请查看文档以了解属性的受支持值类型，并仅使用受支持的类型。检查IsTransient属性。如果是true，可以重试操作。

MessagingCommunicationException

• Client无法建立到服务总线的连接。

确保提供的主机名正确且主机可访问。