c# - Fabric 异常 : The primary or stateless instance for the partition

Question

我正在关注tutorial来自[this book] :

我收到以下异常:

毫无疑问，我的节点运行良好:

以下是我的无状态服务的设置方式:

internal sealed class MyStatelessService : StatelessService
    {
        public MyStatelessService(StatelessServiceContext context)
            : base(context)
        { }

        /// <summary>
        /// Optional override to create listeners (e.g., TCP, HTTP) for this service replica to handle client or user requests.
        /// </summary>
        /// <returns>A collection of listeners.</returns>
        protected override IEnumerable<ServiceInstanceListener> CreateServiceInstanceListeners()
        {
            return new ServiceInstanceListener[0];
        }


        /// <summary>
        /// This is the main entry point for your service instance.
        /// </summary>
        /// <param name="cancellationToken">Canceled when Service Fabric needs to shut down this service instance.</param>
        protected override async Task RunAsync(CancellationToken cancellationToken)
        {
            // TODO: Replace the following sample code with your own logic 
            //       or remove this RunAsync override if it's not needed in your service.

            long iterations = 0;

            while (true)
            {
                cancellationToken.ThrowIfCancellationRequested();

                ServiceEventSource.Current.ServiceMessage(this.Context, "Working-{0}", ++iterations);

                await Task.Delay(TimeSpan.FromSeconds(1), cancellationToken);
            }
        }
    }

我部署并获得此异常的方式:

我做错了什么？如何让我的客户端连接到我的集群？

整个解决方案可以查看here.

Answer 1

有两件事:

1. 您的 ICalculatorService 必须在另一个库项目中定义，以便在无状态服务库和客户端项目之间共享。所以:

   • 创建一个新的库项目MyStatelessService.Interfaces
   • 添加 NuGet 包:Microsoft.ServiceFabric.Services.Remoting
   • 在此库中定义您的 ICalculatorService
   • 从其他两个项目中删除 ICalculatorService
   • 将对 MyStatelessService.Interfaces 的引用添加到您的客户端应用程序和无状态服务库。
   • 修复对 ICalculatorService 的引用
   • 所有 ICalculatorService 都应从同一个库引用

您的客户将是:

using Microsoft.ServiceFabric.Services.Remoting.Client;
using MyStatelessService.Interfaces;
using System;

static void Main(string[] args)
{
    var calculatorClient = ServiceProxy.Create<ICalculatorService>
        (new Uri("fabric:/CalculatorService/MyStatelessService"));

    var result = calculatorClient.Add(1, 2).Result;

    Console.WriteLine(result);
    Console.ReadKey();
}

在 try 语句之后更改 MyStatelessService 的 Program.cs 部分:

ServiceRuntime.RegisterServiceAsync("MyStatelessServiceType",
    context => new CalculatorService(context)).GetAwaiter().GetResult();

ServiceEventSource.Current.ServiceTypeRegistered(Process.GetCurrentProcess().Id, typeof(CalculatorService).Name);

您引用的是 MyStatelessService，而不是 CalculatorService。