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具有OWIN自主侦听器的Azure Service Fabric

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在我的一个无状态服务中,我想包括两个听众:

When I try to register created listeners in standard manner I have a problem that listener based on OWIN is automaticaly closed after initialization:

Diagonstic events

负责注册服务的部分:

protected override IEnumerable<ServiceReplicaListener> CreateServiceReplicaListeners()
        {
           return new List<ServiceReplicaListener>
           {
              new ServiceReplicaListener(parameters => new OwinCommunicationListener("account",new Startup(), parameters)),
              new ServiceReplicaListener(parameters => new ServiceRemotingListener<AccountService>(parameters, this))

        };
    }

ServiceManifest端口设置:

<Resources>
  <Endpoints>
    <Endpoint Name="ServiceEndpoint" />
    <Endpoint Name="WebApiEndpoint" Type="Input" Protocol="http" Port="8083"/>
    <Endpoint Name="ReplicatorEndpoint" />
  </Endpoints>
</Resources>

OwinCommunicationListener:

public class OwinCommunicationListener: ICommunicationListener
{
    private readonly IOwinAppBuilder startup;
    private readonly string appRoot;
    private IDisposable serverHandle;
    private string listeningAddress;
    private readonly ServiceInitializationParameters serviceInitializationParameters;

    public OwinCommunicationListener(string appRoot, IOwinAppBuilder startup, ServiceInitializationParameters serviceInitializationParameters)
    {
        this.startup = startup;
        this.appRoot = appRoot;
        this.serviceInitializationParameters = serviceInitializationParameters;
    }

    public Task<string> OpenAsync(CancellationToken cancellationToken)
    {
        EndpointResourceDescription serviceEndpoint = serviceInitializationParameters.CodePackageActivationContext.GetEndpoint("WebApiEndpointB");
        int port = serviceEndpoint.Port;
        listeningAddress = string.Format(CultureInfo.InvariantCulture,"http://+:{0}/{1}",port,string.IsNullOrWhiteSpace(appRoot)? string.Empty: appRoot.TrimEnd('/') + '/');
        serverHandle = WebApp.Start(listeningAddress, appBuilder => startup.Configuration(appBuilder));
        string publishAddress = listeningAddress.Replace("+", FabricRuntime.GetNodeContext().IPAddressOrFQDN);
        ServiceEventSource.Current.Message("Listening on {0}", publishAddress);
        return Task.FromResult(publishAddress);
    }
    ...
}

我怎样才能解决这个问题并让这两个听众注册?

1 回答

  • 2

    如果您有多个侦听器,则必须为其指定唯一名称 . 您的服务可能会失败,因为这会导致它一遍又一遍地打开和关闭:

    protected override IEnumerable<ServiceReplicaListener> CreateServiceReplicaListeners()
        {
            return new List<ServiceReplicaListener>
           {
              new ServiceReplicaListener(parameters => new OwinCommunicationListener("account",new Startup(), parameters), "accountListener"),
              new ServiceReplicaListener(parameters => new ServiceRemotingListener<AccountService>(parameters, this), "remotingListener")
            }
        }
    

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