Rpc原理详解

博客上已经有人解释的很详细了，我就不在解释了。传送门

项目简介

项目是依赖于.net core2.0版本，内部都是依靠IOC来实现的，方便做自定义扩展。底层的通信是采用socket，sokcet的代码参考Enode的socket代码。类的序列化目前只支持自带的BinarySerializer和Json.net，也可以自定义，扩展也很方便。也支持zookeeper的服务协调。

框架传输及序列化逻辑

当客户端发起请求时，根据建立的客户端代理，获取当前的请求方法信息（名字、所属类型、参数值），通过自带的BinarySerializer将其序列化，所以在传输的方法中的自定义的类就必须加上【Serializable】可序列化标记，不然会报错。客户端将请求的方法信息序列化成字节数组之后传输到服务端，服务端获取到信息后根据方法信息获取到要执行的方法，然后执行该方法，并将结果返回给客户端。返回结果的序列化可以采用自定义的标记来进行，比如在方法或者类上面打上【BinarySerializer】标记，则采用BinarySerializer序列化，打上【JsonSerializer】标记则采用json.net来序列化话，后期可以支持protobuf来序列化。

服务端代码

首先定义一个接口和一个实现类

namespace NetCoreRpc.Application
{
    public interface IStudentApplication
    {
        int Age();

        bool IsYongPeople(int age);

        void Say(string msg);

        Task Sleep();

        Task<int> RunAsync(int sleepTime);

        void Say(byte[] msg);

        byte[] Say();

        [BinarySerializer]
        TestModel Test();
    }

    public class StudentApplication : IStudentApplication
    {
        public int Age()
        {
            return 10;
        }

        public bool IsYongPeople(int age)
        {
            return age < 18;
        }

        public async Task<int> RunAsync(int sleepTime)
        {
            await Task.Delay(sleepTime);
            return sleepTime;
        }

        public void Say(string msg)
        {
            Console.WriteLine($"Say:{msg}");
        }

        public Task Sleep()
        {
            return Task.Delay(10);
        }

        public void Say(byte[] msg)
        {
            Console.WriteLine(Encoding.UTF8.GetString(msg));
        }

        public byte[] Say()
        {
            return Encoding.UTF8.GetBytes("Good Job!");
        }

        public TestModel Test()
        {
            return new TestModel
            {
                Age = 10,
                Msg = Encoding.UTF8.GetBytes("Hello")
            };
        }
    }

    [Serializable]
    public class TestModel
    {
        public int Age { get; set; }

        public byte[] Msg { get; set; }

        public override string ToString()
        {
            return $"{Age}|{Encoding.UTF8.GetString(Msg)}";
        }
    }
}

IStudentApplication

不基于zookeeper的服务端版本

    internal class Program
    {
        public static IConfigurationRoot Configuration;

        private static void Main(string[] args)
        {
            Console.WriteLine("请输入监听端口:");
            var strPort = Console.ReadLine();
            var builder = new ConfigurationBuilder();
                //.SetBasePath(Path.Combine(AppContext.BaseDirectory)).AddJsonFile("NetCoreRpc.json", optional: true);
            Configuration = builder.Build();
            var servicesProvider = BuildDi();
            DependencyManage.SetServiceProvider(servicesProvider, Configuration);
            NRpcServer nrpcServer = new NRpcServer(int.Parse(strPort));
            nrpcServer.Start("NetCoreRpc.Application");
            Console.WriteLine("Welcome to use NetCoreRpc!");
            Console.WriteLine("Input exit to exit");
            var str = Console.ReadLine();
            while (!string.Equals(str, "exit", StringComparison.OrdinalIgnoreCase))
            {
                str = Console.ReadLine();
            }
            nrpcServer.ShutDown();
        }

        private static IServiceProvider BuildDi()
        {
            IServiceCollection services = new ServiceCollection();

            services.AddSingleton<ILoggerFactory, LoggerFactory>();
            services.AddSingleton(typeof(ILogger<>), typeof(Logger<>));
            services.AddSingleton<IStudentApplication, StudentApplication>();
            services.UseRpc();
                //.UseZK();
            var serviceProvider = services.BuildServiceProvider();

            var loggerFactory = serviceProvider.GetRequiredService<ILoggerFactory>();
            
            loggerFactory.AddNLog(new NLogProviderOptions { CaptureMessageTemplates = true, CaptureMessageProperties = true });
            loggerFactory.ConfigureNLog("NLog.config");

            return serviceProvider;
        }
    }

Server

基于zookeeper的服务端版本

    internal class Program
    {
        public static IConfigurationRoot Configuration;

        private static void Main(string[] args)
        {
            Console.WriteLine("请输入监听端口:");
            var strPort = Console.ReadLine();
            var builder = new ConfigurationBuilder()
                .SetBasePath(Path.Combine(AppContext.BaseDirectory)).AddJsonFile("NetCoreRpc.json", optional: true);
            Configuration = builder.Build();
            var servicesProvider = BuildDi();
            DependencyManage.SetServiceProvider(servicesProvider, Configuration);
            NRpcServer nrpcServer = new NRpcServer(int.Parse(strPort));
            nrpcServer.Start("NetCoreRpc.Application");
            Console.WriteLine("Welcome to use NetCoreRpc!");
            Console.WriteLine("Input exit to exit");
            var str = Console.ReadLine();
            while (!string.Equals(str, "exit", StringComparison.OrdinalIgnoreCase))
            {
                str = Console.ReadLine();
            }
            nrpcServer.ShutDown();
        }

        private static IServiceProvider BuildDi()
        {
            IServiceCollection services = new ServiceCollection();

            services.AddSingleton<ILoggerFactory, LoggerFactory>();
            services.AddSingleton(typeof(ILogger<>), typeof(Logger<>));
            services.AddSingleton<IStudentApplication, StudentApplication>();
            services.UseRpc()
                .UseZK();
            var serviceProvider = services.BuildServiceProvider();

            var loggerFactory = serviceProvider.GetRequiredService<ILoggerFactory>();
            
            loggerFactory.AddNLog(new NLogProviderOptions { CaptureMessageTemplates = true, CaptureMessageProperties = true });
            loggerFactory.ConfigureNLog("NLog.config");

            return serviceProvider;
        }
    }

基于zookeeper的版本

客户端代码

首先要引用刚刚定义的接口和Model

    internal class Program
    {
        public static IConfigurationRoot Configuration;

        private static void Main(string[] args)
        {
            var builder = new ConfigurationBuilder().SetBasePath(Path.Combine(AppContext.BaseDirectory)).AddJsonFile("NetCoreRpc.json", optional: true);
            Configuration = builder.Build();

            var servicesProvider = BuildDi();
            DependencyManage.SetServiceProvider(servicesProvider, Configuration);

            Console.WriteLine("Welcome to use NetCoreRpc!");
            var studentApplication = ProxyFactory.Create<IStudentApplication>();
            Console.WriteLine(studentApplication.Age());
            Console.WriteLine(studentApplication.IsYongPeople(15));
            var runTask = studentApplication.RunAsync(111);
            studentApplication.Say("Hello world");
            studentApplication.Say(Encoding.UTF8.GetBytes("Hi!"));
            Console.WriteLine(Encoding.UTF8.GetString(studentApplication.Say()));
            var test = studentApplication.Test();
            Console.WriteLine(test.ToString());
            studentApplication.Sleep();
            Console.WriteLine(runTask.Result);

            Console.WriteLine("Input exit to exit");
            var str = Console.ReadLine();
            while (!string.Equals(str, "exit", StringComparison.OrdinalIgnoreCase))
            {
                str = Console.ReadLine();
            }
        }

        private static IServiceProvider BuildDi()
        {
            IServiceCollection services = new ServiceCollection();
            services.AddOptions();
            services.Configure<RemoteEndPointConfig>(Configuration.GetSection("NetCoreRpc"));
            services.AddSingleton<ILoggerFactory, LoggerFactory>();
            services.AddSingleton(typeof(ILogger<>), typeof(Logger<>));
            services.UseRpc().UseZK();
            var serviceProvider = services.BuildServiceProvider();

            var loggerFactory = serviceProvider.GetRequiredService<ILoggerFactory>();

            //configure NLog
            loggerFactory.AddNLog(new NLogProviderOptions { CaptureMessageTemplates = true, CaptureMessageProperties = true });
            loggerFactory.ConfigureNLog("NLog.config");

            return serviceProvider;
        }
    }

客户端基于zookeeper 

{
  "NetCoreRpc": {
    "Default": "192.168.129.194:12346,192.168.129.194:12347,192.168.129.194:12348",
    "Group": [
      {
        "NameSpace": "",
        "Address": "127.0.0.1:12345"
      }
    ],
    "Zookeeper": {
      "Connection": "192.168.100.34:2181",
      "ParentName": "/NetCoreRpc/ClientTest"
    }
  }
}

NetCoreRpc.json 

    internal class Program
    {
        public static IConfigurationRoot Configuration;

        private static void Main(string[] args)
        {
            var builder = new ConfigurationBuilder().SetBasePath(Path.Combine(AppContext.BaseDirectory)).AddJsonFile("NetCoreRpc.json", optional: true);
            Configuration = builder.Build();

            var servicesProvider = BuildDi();
            DependencyManage.SetServiceProvider(servicesProvider, Configuration);

            Console.WriteLine("Welcome to use NetCoreRpc!");
            var studentApplication = ProxyFactory.Create<IStudentApplication>();
            Console.WriteLine(studentApplication.Age());
            Console.WriteLine(studentApplication.IsYongPeople(15));
            var runTask = studentApplication.RunAsync(111);
            studentApplication.Say("Hello world");
            studentApplication.Say(Encoding.UTF8.GetBytes("Hi!"));
            Console.WriteLine(Encoding.UTF8.GetString(studentApplication.Say()));
            var test = studentApplication.Test();
            Console.WriteLine(test.ToString());
            studentApplication.Sleep();
            Console.WriteLine(runTask.Result);

            Console.WriteLine("Input exit to exit");
            var str = Console.ReadLine();
            while (!string.Equals(str, "exit", StringComparison.OrdinalIgnoreCase))
            {
                str = Console.ReadLine();
            }
        }

        private static IServiceProvider BuildDi()
        {
            IServiceCollection services = new ServiceCollection();
            services.AddOptions();
            services.Configure<RemoteEndPointConfig>(Configuration.GetSection("NetCoreRpc"));
            services.AddSingleton<ILoggerFactory, LoggerFactory>();
            services.AddSingleton(typeof(ILogger<>), typeof(Logger<>));
            services.UseRpc();//.UseZK();
            var serviceProvider = services.BuildServiceProvider();

            var loggerFactory = serviceProvider.GetRequiredService<ILoggerFactory>();

            //configure NLog
            loggerFactory.AddNLog(new NLogProviderOptions { CaptureMessageTemplates = true, CaptureMessageProperties = true });
            loggerFactory.ConfigureNLog("NLog.config");

            return serviceProvider;
        }
    }

不基于zookeeper的代码

NetCoreRpc.json中的Zookeeper节点可以不用配置

调用测试结果

服务端输出如下：

客户端输出如下：

项目中感觉不足之处

1、传输时采用的序列化采用的是自带的BinarySerializer,需要在每个Model打上可序列化标记，后期希望改成不需要打标记就可以序列化的

2、采用zookeeper时，获取可用IP是获取当前第一个可用的IP，没有有任何的算法

3、其它目前还没有想到，如果各位博友有什么建议可以提一下，帮助我一下，谢谢

项目源码地址

GitHub

今天晚上在写这篇随笔的时候发现自己无从下手，博友有没有支招的啊，非常感谢。

 

posted on 2018-01-22 22:21 叶俊权 阅读(…) 评论(…) 编辑 收藏
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