那些遇到过的问题

通过ServiceProxy访问无状态服务失败+ ASP.NET 5 Web API项目引发健康状况错误

Meg*_*Max 8 .net c# asp.net microservices azure-service-fabric

我是微软天蓝色服务面料的新手.对于我的硕士学位,我必须在服务结构中开发一个微服务方法原型.经过几个小时的研究,我仍然没有解决我的问题.

我想在Web前端访问我的(在本地光纤集群中部署的)无状态服务,如https://azure.microsoft.com/en-us/documentation/articles/service-fabric-add-a-web -frontend /.最简单的方法是将ASP .NET 5 Web Api项目添加到Service Fabric应用程序并在其中进行ServiceProxy方法调用ValuesController.所以我将此代码添加到我的解决方案中:

ValuesController.cs:

[Route("api/[controller]")]
public class ValuesController : Controller
{
  // GET api/values/IObject
  [HttpGet("{interfaceName}")]
  public async Task<string> Get(string interfaceName)
  {
    var serviceName = "fabric:/DataServiceFabric/MasterDataMService";
    var masterDataService = ServiceProxy.Create<IMasterDataMService>(new Uri(serviceName));
    var result = await masterDataService.GetMasterDataByName(interfaceName);
    return result.Content;
  }
}
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在F5部署之后,我的浏览器不会自动导航到我的Web前端.通过查看Service Fabric Explorer,我的ASP .NET 5应用程序抛出了健康状态错误:

Kind        Health State  Description
=============================================================================
Partitions  Error         Unhealthy partitions: 100% (1/1), MaxPercentUnhealthyPartitionsPerService=0%.
Partition   Error         Unhealthy partition: PartitionId='413...', AggregatedHealthState='Error'.
Event       Error         Error event: SourceId='System.FM', Property='State'. Partition is below target replica or instance count.
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在此之后这个问题的"分区目标副本或实例计数低于"表明,我的服务未处理的异常阻止其启动.但我无法在Service Fabric Explorer中找到堆栈strace来调试此故障.这是我ServiceManifest.xml的ASP .NET Web服务:

ServiceManifest.xml(Web1):

<?xml version="1.0" encoding="utf-8"?>
<ServiceManifest xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Name="Web1" Version="1.0.0" xmlns="http://schemas.microsoft.com/2011/01/fabric">
   <ServiceTypes>
      <StatelessServiceType ServiceTypeName="Web1Type">
         <Extensions>
            <Extension Name="__GeneratedServiceType__">
               <GeneratedNames xmlns="http://schemas.microsoft.com/2015/03/fabact-no-schema">
                  <DefaultService Name="Web1Service" />
                  <ServiceEndpoint Name="Web1TypeEndpoint" />
               </GeneratedNames>
            </Extension>
         </Extensions>
      </StatelessServiceType>
   </ServiceTypes>
   <CodePackage Name="C" Version="1.0.0">
      <EntryPoint>
         <ExeHost>
            <Program>approot\runtimes\dnx-clr-win-x64.1.0.0-rc1-update1\bin\dnx.exe</Program>
            <Arguments>--appbase approot\src\Web1 Microsoft.Dnx.ApplicationHost Microsoft.ServiceFabric.AspNet.Hosting --server Microsoft.AspNet.Server.WebListener</Arguments>
            <WorkingFolder>CodePackage</WorkingFolder>
            <ConsoleRedirection FileRetentionCount="5" FileMaxSizeInKb="2048" />
         </ExeHost>
      </EntryPoint>
   </CodePackage>
   <Resources>
      <Endpoints>
         <Endpoint Name="Web1TypeEndpoint" Protocol="http" Type="Input" Port="80" />
      </Endpoints>
   </Resources>
</ServiceManifest>
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在这里ApplicationManifest.xml,我的服务面料解决方案:

ApplicationManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<ApplicationManifest xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ApplicationTypeName="DataServiceFabricType" ApplicationTypeVersion="1.0.0" xmlns="http://schemas.microsoft.com/2011/01/fabric">
   <Parameters>
      <Parameter Name="ActorTestServiceActorService_PartitionCount" DefaultValue="10" />
      <Parameter Name="MasterDataMService_InstanceCount" DefaultValue="-1" />
   </Parameters>
   <ServiceManifestImport>
     <ServiceManifestRef ServiceManifestName="Web2Pkg" ServiceManifestVersion="1.0.0" />
     <ConfigOverrides />
   </ServiceManifestImport>
   <ServiceManifestImport>
      <ServiceManifestRef ServiceManifestName="Web1" ServiceManifestVersion="1.0.0" />
   </ServiceManifestImport>
   <ServiceManifestImport>
      <ServiceManifestRef ServiceManifestName="ActorTestServicePkg" ServiceManifestVersion="1.0.0" />
   </ServiceManifestImport>
   <ServiceManifestImport>
      <ServiceManifestRef ServiceManifestName="MasterDataMServicePkg" ServiceManifestVersion="1.0.0" />
      <ConfigOverrides />
   </ServiceManifestImport>
   <DefaultServices>
      <Service Name="Web1Service">
         <StatelessService ServiceTypeName="Web1Type">
            <SingletonPartition />
         </StatelessService>
      </Service>
      <Service Name="ActorTestServiceActorService" GeneratedIdRef="761ee3cf-5a3a-49d8-9c57-aa3480d1acf1">
         <StatelessService ServiceTypeName="ActorTestServiceActorServiceType">
            <UniformInt64Partition PartitionCount="[ActorTestServiceActorService_PartitionCount]" LowKey="-9223372036854775808" HighKey="9223372036854775807" />
         </StatelessService>
      </Service>
      <Service Name="MasterDataMService">
         <StatelessService ServiceTypeName="MasterDataMServiceType" InstanceCount="[MasterDataMService_InstanceCount]">
            <SingletonPartition />
         </StatelessService>
      </Service>
   </DefaultServices>
</ApplicationManifest>
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所以我用ASP.NET 5 Web应用程序创建了一个新的解决方案ValuesController.cs.我确保我的无状态服务在我的本地群集上运行,而不是我启动了我的新Web应用程序.在我的控制器中调用GET-Method后,我得到以下异常:

Exception thrown: 'System.Fabric.FabricException' in mscorlib.dll
Microsoft.AspNet.Hosting.Internal.HostingEngine: Information: Request finished in 0,2593ms 500
Microsoft.AspNet.Server.Kestrel: Error: An unhandled exception was thrown by the application.
System.Fabric.FabricException: Invalid partition key/ID '{0}'  for selector {1}
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我的无状态服务是SingletonPartition,所以我需要一个分区键吗？如果是,我如何获得密钥？Service Fabric Explorer不向我提供有关无状态服务的此信息.这是ServiceManifest.xml我的无国籍服务:

ServiceManifest.xml(MasterDataMService):

<?xml version="1.0" encoding="utf-8"?>
<ServiceManifest Name="MasterDataMServicePkg"
                 Version="1.0.0"
                 xmlns="http://schemas.microsoft.com/2011/01/fabric"
                 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ServiceTypes>
    <!-- This is the name of your ServiceType. 
         This name must match the string used in RegisterServiceType call in Program.cs. -->
    <StatelessServiceType ServiceTypeName="MasterDataMServiceType" />
  </ServiceTypes>

  <!-- Code package is your service executable. -->
  <CodePackage Name="Code" Version="1.0.0">
    <EntryPoint>
      <ExeHost>
        <Program>MasterDataMService.exe</Program>
      </ExeHost>
    </EntryPoint>
  </CodePackage>

  <!-- Config package is the contents of the Config directoy under PackageRoot that contains an 
       independently-updateable and versioned set of custom configuration settings for your service. -->
  <ConfigPackage Name="Config" Version="1.0.0" />

  <Resources>
    <Endpoints>
      <!-- This endpoint is used by the communication listener to obtain the port on which to 
           listen. Please note that if your service is partitioned, this port is shared with 
           replicas of different partitions that are placed in your code. -->
      <Endpoint Name="ServiceEndpoint" Type="Input" Protocol="http" Port="80"/>
    </Endpoints>
  </Resources>
</ServiceManifest>
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之后我决定与OWIN建立服务沟通:

MasterDataMService.cs:

internal sealed class MasterDataMService : StatelessService, IMasterDataMService
{
  [...]      

  protected override IEnumerable<ServiceInstanceListener> CreateServiceInstanceListeners()
  {
    return new[]
    {
      new ServiceInstanceListener(initParams => new OwinCommunicationListener("MasterDataMService", new StartUp(), initParams))
    };
  }
}
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现在,我可以通过使用HttpClientin 来访问我的微服务DefaultController:

var client = new HttpClient();
var request = "http://localhost:80/MasterDataMService/api/values/query";
var result = string.Empty;
HttpResponseMessage response = await client.GetAsync(request);
if (response.IsSuccessStatusCode)
{
  result = await response.Content.ReadAsStringAsync();
}
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但这不是我原来想要的.我不想在我的请求中指定服务端点.相反,我想与我的无国籍服务沟通ServiceProxy.我如何在这里实现这一目标？我错了什么？如何使用部署到我的服务结构集群中的ASP .NET 5应用程序解决此健康状态错误？

谢谢你的时间.

编辑:

无效分区键异常的扩展堆栈跟踪:

Exception thrown: 'System.Fabric.FabricException' in mscorlib.dll
Microsoft.AspNet.Hosting.Internal.HostingEngine: Information: Request finished in 1,35ms 500
Microsoft.AspNet.Server.WebListener.MessagePump: Error: ProcessRequestAsync
System.Fabric.FabricException: Invalid partition key/ID '{0}'  for selector {1} ---> System.Runtime.InteropServices.COMException: exception of HRESULT: 0x80071BBF
   at System.Fabric.Interop.NativeClient.IFabricServiceManagementClient4.EndResolveServicePartition(IFabricAsyncOperationContext context)
   at System.Fabric.FabricClient.ServiceManagementClient.ResolveServicePartitionEndWrapper(IFabricAsyncOperationContext context)
   at System.Fabric.Interop.AsyncCallOutAdapter2`1.Finish(IFabricAsyncOperationContext context, Boolean expectedCompletedSynchronously)
   --- End of inner exception stack trace ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.ServiceFabric.Services.Client.ServicePartitionResolver.<ResolveAsyncHelper>d__2a.MoveNext()
--- End of stack trace from the previous location where the exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.ServiceFabric.Services.Communication.Client.CommunicationClientFactoryBase`1.<GetClientAsync>d__a.MoveNext()
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如果您需要更多,请给我反馈.(完整堆栈跟踪长度为82行)

无效的方案异常堆栈跟踪:

Exception thrown: 'System.ArgumentException' in mscorlib.dll
Microsoft.AspNet.Hosting.Internal.HostingEngine: Information: Request finished in 1,45ms 500
Microsoft.AspNet.Server.WebListener.MessagePump: Error: ProcessRequestAsync
System.ArgumentException: the provided uri scheme 'http' is invalid; expected 'net.tcp'.
Parametername: via
   at System.ServiceModel.Channels.TransportChannelFactory`1.ValidateScheme(Uri via)
   at System.ServiceModel.Channels.ConnectionOrientedTransportChannelFactory`1.OnCreateChannel(EndpointAddress address, Uri via)
   at System.ServiceModel.Channels.ChannelFactoryBase`1.InternalCreateChannel(EndpointAddress address, Uri via)
   at System.ServiceModel.Channels.ServiceChannelFactory.ServiceChannelFactoryOverDuplexSession.CreateInnerChannelBinder(EndpointAddress to, Uri via)
   at System.ServiceModel.Channels.ServiceChannelFactory.CreateServiceChannel(EndpointAddress address, Uri via)
   at System.ServiceModel.Channels.ServiceChannelFactory.CreateChannel(Type channelType, EndpointAddress address, Uri via)
   at System.ServiceModel.DuplexChannelFactory`1.CreateChannel(InstanceContext callbackInstance, EndpointAddress address, Uri via)
   at System.ServiceModel.DuplexChannelFactory`1.CreateChannel(InstanceContext callbackInstance, Binding binding, EndpointAddress endpointAddress)
   at Microsoft.ServiceFabric.Services.Communication.Wcf.Client.WcfCommunicationClientFactory`1.<CreateClientAsync>d__2.MoveNext()
--- End of stack trace from the previous location where the exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.ServiceFabric.Services.Communication.Client.CommunicationClientFactoryBase`1.<CreateClientWithRetriesAsync>d__1e.MoveNext()
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kam*_*ilk 9

我在学习Service Fabric时遇到了同样的问题.原来只提供URI是不够的 - 我还必须将分区键指定为一个魔术值:

IHelloService service = ServiceProxy.Create<IHelloService>(new Uri("fabric:/Application1/HelloService"), new ServicePartitionKey(1));
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感谢disq.us上的这个帖子.微软工程师Oana Platon还提供了更深入的解释,说明为什么1的值有效:

Diogo,看看解释分区的这篇文章: 链接 具体来说,看看远程分区(也称为UniformInt64Partition):"这用于指定一个整数范围(由低键和高键标识)和多个分区(n).它创建n个分区,每个分区负责整个分区键范围的非重叠子范围.例如,低密钥为0,高密钥为99,计数为4的远程分区方案创建四个分区,如下所示." 然后查看服务清单并找出它的配置方式 - 分区数和范围(低调 - 高键).如果您有一个分区,则该范围内的任何密钥都会转到(一个)分区,因此您指定的密钥无关紧要.如果您有多个分区,则需要确定客户需要与哪个分区进行通信.在分区服务的范围内指定分区键.

我必须承认,我自己必须更深入地研究分区以理解这种解释.

小智 0

我自己也遇到了这些令人沮丧的问题并解决了它们。

有几件事需要检查

1) 确保您的 ASP.NET 5 Web api 项目未引用任何 X64 库。

2) 端口冲突.. 将 ASPNET 5 Web api 部署到集群时，请确保没有 2 个网站使用相同的端口。您可以更改 [ASP.NET 5 项目]/PackageRoot/ServiceManifest.xml 内的端口。

**3）“包裹”文件夹疯狂！验证您的包装文件夹（位于根解决方案文件夹）仅包含 .net 4.5.1 类库。当我删除包装文件夹内的“Newtonsoft.Json”文件夹时，我的问题消失了。然后，您必须在解决方案上运行 dnu Restore，以便它将重新创建 project.lock.json 文件

4) 确保您的startup.cs 类中没有任何问题。在本地运行 Web api 只是为了确保其加载；服务代理类加载失败是正常的。

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