关于C#：NServiceBus传奇不起作用

NServiceBus saga not working

我有一个看起来像这样的处理程序：

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public class CreateNewUserHandler :
Saga<UncorroboratedCreateNewUser>,
IAmStartedByMessages<CreateNewUser>,
IHandleMessages<FoundUser>
{

[Dependency]
public IBus Bus { get; set; }

public override void ConfigureHowToFindSaga()
{
ConfigureMapping<CreateNewUser>(saga => saga.CorrelationId, req => req.CorrelationId);
ConfigureMapping<FoundUser>(saga => saga.CorrelationId, foundUser => foundUser.CorrelationId); //CorrelationId is of type Guid here
}

public void Handle(CreateNewUser message)
{
Mapper.DynamicMap(message, Data, typeof(CreateNewUser), typeof(UncorroboratedCreateNewUser));
Data.CorrelationId = message.CorrelationId;
Bus.Send(new FindUserByUserName { CorrelationId = Data.CorrelationId, UserName = message.UserName });
}

public void Handle(FoundUser message)
{
//**THIS BLOCK WAS NEVER HIT**
}
}

现在应该用FoundUser答复的另一个处理程序是这样的：

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public class FindUserByUserNameHandler : IMessageHandler<FindUserByUserName>
{
private readonly UserRepository _userRepository;
public IBus Bus { get; set; }

public FindUserByUserNameHandler(UserRepository userRepository)
{
_userRepository = userRepository;
}

public void Handle(FindUserByUserName message)
{
var foundUser = _userRepository.FindByUserName(message.UserName);
FoundUser result = Bus.CreateInstance<FoundUser>( _ => _.CorrelationId = message.CorrelationId);
if (foundUser != null)
{
result = Mapper.DynamicMap<FoundUser>(foundUser);
result.IsUserFound = true;
}
else
{
result.
AuthenticationUserName = message.UserName;
result.IsUserFound = false;
}

Bus.Reply(result);
}
}

在调试中，我已经能够跟踪进入CreateNewUser => FindUserByName => Reply的消息，并且跟踪跟踪记录日志，甚至看起来就像消息已将其返回到原始队列一样。

但是从未调用过方法void Handle(FoundUser message)！我失去了一个彻夜难眠的睡眠，打乱了我的大脑，并在互联网上寻找有关我可能丢球的线索。如果将CreateNewUserHandler转换为常规处理程序(非传奇)，则另一件事就是调用上面的方法！

这些是我必须继续做的唯一线索(而且不多-我真的希望该错误更有意义)

2013-05-17 14:30:29,682 [Worker.18] WARN
MyProject.Unicast.Transport.Transactional.TransactionalTransport
[(null)] <(null)> - Failed raising 'transport message received' event
for message with ID=377f1e49-06e2-465f-877a-9443828e8866
System.NullReferenceException: Object reference not set to an instance
of an object. at
NServiceBus.Unicast.UnicastBus.HandleTransportMessage(IBuilder
childBuilder, TransportMessage msg) in
c:\\TeamCity\\buildAgent\\work\
sb.master_7\\src\\unicast\
ServiceBus.Unicast\\UnicastBus.cs:line
1331 at NServiceBus.Unicast.UnicastBus.TransportMessageReceived(Object
sender, TransportMessageReceivedEventArgs e) in
c:\\TeamCity\\buildAgent\\work\
sb.master_7\\src\\unicast\
ServiceBus.Unicast\\UnicastBus.cs:line
1248 at System.EventHandler`1.Invoke(Object sender, TEventArgs e) at
NServiceBus.Unicast.Transport.Transactional.TransactionalTransport.OnTransportMessageReceived(TransportMessage
msg) in
c:\\TeamCity\\buildAgent\\work\
sb.master_7\\src\\impl\\unicast\\transport\
ServiceBus.Unicast.Transport.Transactional\\TransactionalTransport.cs:line
480

还有

2013-05-17 14:30:29,591 [Worker.18] INFO
NServiceBus.Sagas.Impl.SagaDispatcherFactory [(null)] <(null)> - Could
not find a saga for the message type MyProject.Messages.FoundUser with
id 377f1e49-06e2-465f-877a-9443828e8866. Going to invoke
SagaNotFoundHandlers.

以防万一，需要的配置是：

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NServiceBus.Configure.With(busAssemblies)
.Log4Net()
.License(Config.Default.NServiceBus_License)
.DefineEndpointName(endPointName)
.UnityBuilder(serviceBusDiConfiguration.Container)
.DontUseTransactions() //I don't know why this is needed, but doesn't seem to get very far otherwise.
.AzureConfigurationSource()
.AzureSagaPersister()
.AzureSubcriptionStorage()
.AzureDataBus()
.JsonSerializer()
.AzureServiceBusMessageQueue()
.UnicastBus()
.LoadMessageHandlers()
.CreateBus()
.Start();
BusConfiguration.Configurer.ConfigureComponent(uoWImplementer, DependencyLifecycle.InstancePerUnitOfWork); //For the custom unitOfWork

请帮助！

======================下面的消息DTO ======================= ===

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public class CreateNewUser : ICommand
{
public string FirstName { get; set; }
public string LastName { get; set; }
public string UserName { get; set; }
public string Password { get; set; }
public Guid CorrelationId { get; set; }
}

public class FindUserByUserName : IMessage
{
public Guid CorrelationId { get; set; }
public string UserName { get; set; }
}

public class FoundUser: IMessage
{
public bool IsUserFound { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public string AuthenticationUserName { get; set; }
public Guid CorrelationId { get; set; }
}

和saga类iself：

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public class UncorroboratedCreateNewUser : IContainSagaData
{
public virtual Guid Id { get; set; }
public virtual string Originator { get; set; }
public virtual string OriginalMessageId { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName { get; set; }
public virtual string UserName { get; set; }
public virtual string Password { get; set; }
public virtual Guid CorrelationId { get; set; }
}