C# 从MT 2.9.5迁移到4.0.1，并获得；routingSlip必须至少包含一个“活动日志”；

我们已经开始从MassTransit 2.9.5（带有Courier插件）迁移到MassTransit 4.0.1的过程。事情进展缓慢，但还好，我对新的（对我们来说）功能感到兴奋。。。但我和Courier碰壁了

下面是一个既有执行行为又有补偿行为的简单活动：

public class AdditionActivity : Activity<AdditionActivity.Args, AdditionActivity.CompLog>
{
    private readonly ILogger _logger;

    public AdditionActivity(ILogger logger)
    {
        _logger = logger;
    }

    public class Args : CorrelatedBy<Guid>
    {
        public Guid CorrelationId { get; set; }
        public int First { get; set; }
        public int Second { get; set; }
    }

    public class CompLog : CorrelatedBy<Guid>
    {
        public Guid CorrelationId { get; set; }
        public int Result { get; set; }
    }

    public async Task<ExecutionResult> Execute(ExecuteContext<Args> context)
    {
        var compLog = new CompLog
        {
            CorrelationId = context.Arguments.CorrelationId,
            Result = context.Arguments.First + context.Arguments.Second
        };

        _logger.Info($"{nameof(AdditionActivity)}[{context.Arguments.CorrelationId} - Adding [{context.Arguments.First}] and [{context.Arguments.Second}] = [{compLog.Result}]");
        await Task.CompletedTask;
        return context.Completed(compLog);
    }

    public async Task<CompensationResult> Compensate(CompensateContext<CompLog> context)
    {
        _logger.Warn($"{nameof(AdditionActivity)}[{context.Log.CorrelationId}] - Ruh roh...  must compensate for add that resulted in [{context.Log.Result}]");
        await Task.CompletedTask;
        return context.Compensated();
    }
}

我已经通读了这里的文档（），但是没有什么不对的地方（除了文档的代码示例和当前的mt4.0.1之间在命名上的一些差异）

在MT 4.0.1中，在活动完成时存储补偿日志条目的正确方法是什么？和/或即使我提供了一个补偿日志值，是否还有其他我可能做错的事情显示为此异常

谢谢

---

Tyler

看起来您在与执行活动主机相同的端点上注册了CompensateHost，这导致在收到路由滑条时执行两台主机

---

ExecuteActivityHost和CompensateeActivityHost必须位于不同的端点上（我猜您已经知道了，但在移植到4.0.1后，不知何故连接错误）。

就是这样！我对从所有单独的总线实例切换到单独的总线实例感到非常兴奋，我太过分地将它们折叠起来，而忘记将它们保留在单独的端点上。。。（脸掌）谢谢！

Exchange    Procedure.Service.Activities.AdditionActivity.Execute_error
Routing Key 
Redelivered ●
Properties  
message_id: 4ded0000-47b0-38d5-3ae8-08d5701751d5
correlation_id: 924899da-7a61-4b80-819f-f66f166c72e4
delivery_mode:  2
headers:    
Content-Type:   application/vnd.masstransit+json
publishId:  1
MT-Reason:  fault
MT-Fault-ExceptionType: System.ArgumentException
MT-Fault-Message:   The routingSlip must contain at least one activity log
MT-Fault-Timestamp: 2018-02-09T23:46:20.3953028Z
MT-Fault-StackTrace:    at MassTransit.Courier.Hosts.HostCompensateContext`1..ctor(HostInfo host, ConsumeContext`1 context) 
at MassTransit.Courier.Hosts.CompensateActivityHost`2.<Send>d__4.MoveNext() 
at MassTransit.Courier.Hosts.CompensateActivityHost`2.<Send>d__4.MoveNext() 
at GreenPipes.Filters.TeeFilter`1.<Send>d__5.MoveNext() 
at GreenPipes.Filters.OutputPipeFilter`2.<GreenPipes-IFilter<TInput>-Send>d__6.MoveNext() 
at GreenPipes.Filters.OutputPipeFilter`2.<GreenPipes-IFilter<TInput>-Send>d__6.MoveNext() 
at MassTransit.Pipeline.Filters.DeserializeFilter.<Send>d__4.MoveNext() 
at GreenPipes.Filters.RescueFilter`2.<GreenPipes-IFilter<TContext>-Send>d__5.MoveNext()
MT-Host-MachineName:    TYLER-XPS13
MT-Host-ProcessName:    Procedure.Service.vshost
MT-Host-ProcessId:  13040
MT-Host-Assembly:   Procedure.Service
MT-Host-AssemblyVersion:    1.0.0.0
MT-Host-MassTransitVersion: 4.0.1.1390
MT-Host-FrameworkVersion:   4.0.30319.42000
MT-Host-OperatingSystemVersion: Microsoft Windows NT 6.2.9200.0
content_type:   application/vnd.masstransit+json
Payload
1844 bytes
Encoding: string
{

  "messageId": "4ded0000-47b0-38d5-3ae8-08d5701751d5",

  "correlationId": "924899da-7a61-4b80-819f-f66f166c72e4",

  "conversationId": "4ded0000-47b0-38d5-a350-08d570175173",

  "initiatorId": "924899da-7a61-4b80-819f-f66f166c72e4",

  "sourceAddress": "rabbitmq://localhost/Procedure.Service",

  "destinationAddress": "rabbitmq://localhost/Procedure.Service.Activities.AdditionActivity.Execute",

  "messageType": [

    "urn:message:MassTransit.Courier.Contracts:RoutingSlip"

  ],

  "message": {

    "trackingNumber": "924899da-7a61-4b80-819f-f66f166c72e4",

    "createTimestamp": "2018-02-09T23:46:20.1847429Z",

    "itinerary": [

      {

        "name": "AdditionActivity",

        "address": "rabbitmq://localhost/Procedure.Service.Activities.AdditionActivity.Execute",

        "arguments": {

          "correlationId": "00000000-0000-0000-0000-000000000000",

          "first": 3,

          "second": 5

        }

      },

      {

        "name": "LogActivity",

        "address": "rabbitmq://localhost/Procedure.Service.Activities.LogActivity.Execute",

        "arguments": {

          "theLogMessage": "NewStyleConsumer - Consumed SomeFunMessage[924899da-7a61-4b80-819f-f66f166c72e4] - Procedure [924899da-7a61-4b80-819f-f66f166c72e4 has begun... - gonna trigger a routing slip!"

        }

      }

    ],

    "activityLogs": [],

    "compensateLogs": [],

    "variables": {},

    "activityExceptions": [],

    "subscriptions": []

  },

  "headers": {},

  "host": {

    "machineName": "TYLER-XPS13",

    "processName": "Procedure.Service.vshost",

    "processId": 13040,

    "assembly": "Procedure.Service",

    "assemblyVersion": "1.0.0.0",

    "frameworkVersion": "4.0.30319.42000",

    "massTransitVersion": "4.0.1.1390",

    "operatingSystemVersion": "Microsoft Windows NT 6.2.9200.0"

  }

}