跨平台开源通讯组件elastic communication – smark

    elastic communication是基于c#开发支持.net和mono的通讯组件(简称EC),EC的主要目的简化mono和.net下的通讯开发难度,通过EC可以非常快速地开发基于mono和.net的通讯交互应用。EC抽取的基础的通讯协议默认支持protobuf,msgpack的数据对象进行通讯交互,开发者不可以根据自己的制要制订更多的序列化方式支持;EC不紧紧支持简单的对像传输,还提供了控制器,方法控制器和更方便的远程接口调用功能。

    以下是ES希望实现的最终目标

    

    借助于Xamarin实现不同移动端的实现,由于这一块个人工作原因还没细化实现,通过开源相关代码可以让感兴趣的人更好进一步去完成相关功能。

功能简介

    EC实现通讯功能是非常方便的事情,下面通讯简单的几种场景来介绍一下EC在通讯上的应用。

HelloWord

  • 服务端
    namespace HelloWord.Server
    {
        [Controller]
        public class Program
        {
            static void Main(string[] args)
            {
                ECServer.Open();
                System.Threading.Thread.Sleep(-1);
            }
    
            public string HelloWord(ISession session,Hello e)
            {
                return string.Format("hello {0} [say time:{1}]", e.Name, DateTime.Now);
            }
        }
    
        [MessageID(0x1)]
        [ProtoContract]
        public class Hello
        {
            [ProtoMember(1)]
            public string Name { get; set; }
        }
    }
  • 客户端
    private EC.ProtoSyncClient mClient = new ProtoSyncClient("127.0.0.1");
    mClient.Send<string>(new Hello { Name=textBox1.Text })

远程方法访问

  EC支持远程方法调用,如果用过wcf那对这功能感觉应该不会陌生,而EC也是通过接口的方式来定义远程调用行为;wcf同一方法重载需要重新定义名称,而ec则支持同一方法多个重载版本。为了满足更复杂的需要,EC的远程调用同样支持out和ref参数。

  • 接口定义
    namespace Remoting.Service
    {
        public interface IUserService
        {
            User Register(string name, string email);
        }
    }
  • 服务端
    [SOAService(typeof(Service.IUserService))]
        class Program : IUserService
        {
            static void Main(string[] args)
            {
                ECServer.Open();
                System.Threading.Thread.Sleep(-1);
            }
    
            public Service.User Register(string name, string email)
            {
                User user = new User();
                user.EMail = email;
                user.Name = name;
                user.CreateTime = DateTime.Now;
                return user;
            }
        }
  • 客户端
      public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            private ProtoClient mClient = new ProtoClient("192.168.7.111");
    
            private IUserService UserService;
    
            private void Form1_Load(object sender, EventArgs e)
            {
                UserService = mClient.CreateInstance();
            }
    
            private void cmdRegister_Click(object sender, EventArgs e)
            {
                User user= UserService.Register(txtName.Text, txtEMail.Text);
                txtCreateTime.Text = user.CreateTime.ToString();
            }
        }

数据访问示例

  ?数据访问应该是最常见的一种应用场,以下是定义一个简单的数据查询示例。

  • 服务端
     [EC.Controller]
        public class Program
        {
            static void Main(string[] args)
            {
                DBContext.SetConnectionDriver(DB.DB1);
                DBContext.SetConnectionString(DB.DB1, "Data Source=northwindEF.db;Pooling=true;FailIfMissing=false;");
                ECServer.Open();
                System.Threading.Thread.Sleep(-1);
            }
    
            public IList OnEmployeeSearch(ISession session, EmployeeSearch e)
            {
                return new Expression().List();
            }
    
            public IList OnCustomerSearch(ISession session, CustomerSearch e)
            {
                return new Expression().List();
            }
    
            public IList OnOrderSearch(ISession session, OrderSearch e)
            {
                Expression exp = new Expression();
                if (e.CustomerID != null)
                    exp &= Models.Orders.customerID == e.CustomerID;
                if (e.EmployeeID > 0)
                    exp &= Models.Orders.employeeID == e.EmployeeID;
                return exp.List();
            }
    
            public IList GetOrderDetail(ISession session, GetDetail e)
            {
                Expression exp = Models.OrderDetails.orderID == e.OrderID;
                JoinTable jt = Models.OrderDetails.productID.InnerJoin(Models.Products.productID);
                jt.Select("OrderDetails.*", Models.Products.productName.Name);
                return exp.List(jt);
            }
    
        }
  • 客户端
    private ProtoSyncClient mClient = new ProtoSyncClient("127.0.0.1");
    
            private void FrmMain_Load(object sender, EventArgs e)
            {
                cbEmployees.Items.Add(new Employee());
                foreach (Employee item in mClient.Send<>>(new EmployeeSearch()))
                {
                    cbEmployees.Items.Add(item);
                }
                cbCustomers.Items.Add(new Customer());
                foreach (Customer item in mClient.Send<>>(new CustomerSearch()))
                {
                    cbCustomers.Items.Add(item);
                }
                
            }
    
            private void cmdSearch_Click(object sender, EventArgs e)
            {
                OrderSearch os = new OrderSearch();
                if (cbCustomers.SelectedItem != null)
                    os.CustomerID = ((Customer)cbCustomers.SelectedItem).CustomerID;
                if (cbEmployees.SelectedItem != null)
                    os.EmployeeID = ((Employee)cbEmployees.SelectedItem).EmployeeID;
                gdOrder.DataSource = mClient.Send<>>(os);
            }
    
            private void gdOrder_SelectionChanged(object sender, EventArgs e)
            {
                if (gdOrder.SelectedRows.Count > 0)
                {
                    Order order = (Order)gdOrder.SelectedRows[0].DataBoundItem;
                    GetDetail getdetail = new GetDetail();
                    getdetail.OrderID = order.OrderID;
                    gdDetail.DataSource = mClient.Send<>>(getdetail);
                }
            }

AppModule

?    AppModule类似于asp.net的httpModule,它可以在EC服务中载实始化的时候进行加载,通过AppModule可以实现消息处理,处理日志,全局信息定义等相关主要功能。

    public class FilterModel : IAppModel
    {

        public string Name
        {
            get { return "Filter"; }
        }

        private System.Threading.Timer mTimer;

        public void Init(IApplication application)
        {
            //application.Filters.Add(new LoginFilter());
            application.Disconnected += (o, e) =>
            {
                "{0} disposed applicaion event".Log4Info(e.Session.Channel.EndPoint);

            };
            application.Connected += (o, e) =>
            {

                "{0} connect applicaion event".Log4Info(e.ChannelConnectArgs.Channel.EndPoint);

            };
              application.SendCompleted += (o, e) =>
              {
                 "{0} send completed applicaion event".Log4Info(e.Session.Channel.EndPoint);
              };
             application.MethodProcess += (o, e) =>
             {
                 //application
                 e.Application["Path"] = @"c:\";
                 //sexxion
                 e.Session["folder"] = "aaa";
             };
            application.Error += (o, e) =>
            {
                "{0} channel error {1}".Log4Error(e.Info.Channel.EndPoint, e.Info.Error.Message);
            };
            mTimer = new System.Threading.Timer(o =>
            {
                application.Server.Send(new User { Name = Guid.NewGuid().ToString("N"),CreateTime = DateTime.Now }, application.Server.GetOnlines());
            }, null, 1000, 1000);

        }
        public string Command(string cmd)
        {
            throw new NotImplementedException();
        }
    }

Filter

    这个特性在EC上是提供比较有用的功能,通讯filter可以对调用方法加入权限,日志,拦载等逻辑功能。  

public class AdminFilter : FilterAttribute
    {
        public override void Execute(IMethodContext context)
        {
            "admin filter ->{0}".Log4Debug(context.Handler);
            base.Execute(context);
        }
    }
    [Controller]
    public class Controller
    {
        [SkipFilter(typeof(LoginFilter))]
        [ThreadPool]
        public User Regisetr(ISession session, User user)
        {
            user.CreateTime = DateTime.Now;
            "Register invoke[Name:{0} Email:{1}]".Log4Debug(user.Name, user.EMail);

            return user;
        }

        [AdminFilter]
        public IList Search(ISession session, Query query)
        {
            "Search invoke".Log4Debug();
            List users = new List();
            users.Add(new User());
            users.Add(new User());
            return users;
        }
    }

开源地址

  https://github.com/IKende/ec/

  https://github.com/IKende/ec/tree/master/Samples

开源原因

    其实我个人不太多喜欢走开源路线,主要是工作和手头上的一些产品太多,而这个产品可以说完善度已经达到90%,如果扔在那里感觉有点可惜了,所以把产品开源出来,如果有兴趣的朋友可以复制完善它。



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