自行实现 dotnet core rpc

前言

小李:“胖子,上头叫你对接我的数据好了没有?”

胖子:“那是你的事,你都不提供数据源,我咋接?”

小李:“你想要什么样的数据源?”

胖子:“我想要一个调用简单点的!”

小李:“我这个数据源是在linux平台使用docker封装发布的,webapi的怎么样?”

胖子:“也行,这项目工期快用完了,你得提供api封装sdk,另外我这边对性能有要求的!”

小李:“webapi多好,基于json各个平台都能对接,性能还不错的!”

胖子:“我只关心我的业务,不是我的业务代码,多一行我都不想码,不然没按时完成算你的!另外用webapi到时候请求量一大,到时候端口用完了,连接不了这锅也得你背!”

小李:“我@##¥%*#¥@#&##@……”

面对胖子这些说辞,小李心里面虽然一万只草泥马在奔腾,但是项目还是要完成是不?另外胖子说的也不无道理!小李作为一个在C#下侵淫多年老鸟,很快想出一个办法——rpc!首先当然是选wcf,这个巨硬的企业级产品在快速开发上除了配置上坑爹了一点,针对客户端的对接真的非常快。小李仔细一研究wcf service 发现目前在linux下玩不了,心里面又是了一阵@##¥%*#¥@#&##@……

胖子:“小李纠结啥,要不就弄个三方的搞一下算了,就算出事了,你说不定都已经离职了,怕啥……”

看着胖子一脸猥琐的表情,小李那是一个气啊,就怪自已平时牛逼吹上天,这时候怎么好怂呢,一咬牙:“你放心,误不了你的事!”。小李一边回复,心里面开始盘算着自行实现一个功能简易,性能高效,使用简单的rpc了。

  上面小李与胖子的场景,在开发的时候也是经典案例,回到正题来:本人认为rpc主要是:调用方法及参数序列化、socket传输、调用方法及参数反序列化、映射到本地并采用与请求相同流程回应客户端的一套方案。其中关键点简单分析主要有:序列化与反序列化、高性能tcp、远程方法反转、客户端代码生成四个方面;tcp还是使用iocp好了,其他接着一一分析。

序列化与反序列化

  序列化与反序列化这个选二进制一般比json的好,ms版的BinaryFormatter 通用性强,但是他的性能、model的标记写法等估计又要被喷了;找到Expression序列化,结果还是走的类似于soap xml这一套,想想算了:本地方法调用都是纳秒级的,io都是毫秒级别的,socket的一次就传这么传这么大一堆,就算局域网也伤不起呀,想轻量化提升性能都难,自行实现一个简单的好了。

  1 /****************************************************************************
  2 *Copyright (c) 2018 Microsoft All Rights Reserved.
  3 *CLR版本: 4.0.30319.42000
  4 *机器名称:WENLI-PC
  5 *公司名称:Microsoft
  6 *命名空间:SAEA.RPC.Serialize
  7 *文件名: SerializeUtil
  8 *版本号: V1.0.0.0
  9 *唯一标识:9e919430-465d-49a3-91be-b36ac682e283
 10 *当前的用户域:WENLI-PC
 11 *创建人: yswenli
 12 *电子邮箱:wenguoli_520@qq.com
 13 *创建时间:2018/5/22 13:17:36
 14 *描述:
 15 *
 16 *=====================================================================
 17 *修改标记
 18 *修改时间:2018/5/22 13:17:36
 19 *修改人: yswenli
 20 *版本号: V1.0.0.0
 21 *描述:
 22 *
 23 *****************************************************************************/
 24 using SAEA.RPC.Model;
 25 using System;
 26 using System.Collections.Generic;
 27 using System.Text;
 28 
 29 namespace SAEA.RPC.Serialize
 30 {
 31     /// <summary>
 32     /// rpc参数序列化处理
 33     /// </summary>
 34     public class ParamsSerializeUtil
 35     {
 36         /// <summary>
 37         /// len+data
 38         /// </summary>
 39         /// <param name="param"></param>
 40         /// <returns></returns>
 41         public static byte[] Serialize(object param)
 42         {
 43             List<byte> datas = new List<byte>();
 44 
 45             var len = 0;
 46             byte[] data = null;
 47 
 48             if (param == null)
 49             {
 50                 len = 0;
 51             }
 52             else
 53             {
 54                 if (param is string)
 55                 {
 56                     data = Encoding.UTF8.GetBytes((string)param);
 57                 }
 58                 else if (param is byte)
 59                 {
 60                     data = new byte[] { (byte)param };
 61                 }
 62                 else if (param is bool)
 63                 {
 64                     data = BitConverter.GetBytes((bool)param);
 65                 }
 66                 else if (param is short)
 67                 {
 68                     data = BitConverter.GetBytes((short)param);
 69                 }
 70                 else if (param is int)
 71                 {
 72                     data = BitConverter.GetBytes((int)param);
 73                 }
 74                 else if (param is long)
 75                 {
 76                     data = BitConverter.GetBytes((long)param);
 77                 }
 78                 else if (param is float)
 79                 {
 80                     data = BitConverter.GetBytes((float)param);
 81                 }
 82                 else if (param is double)
 83                 {
 84                     data = BitConverter.GetBytes((double)param);
 85                 }
 86                 else if (param is DateTime)
 87                 {
 88                     var str = "wl" + ((DateTime)param).Ticks;
 89                     data = Encoding.UTF8.GetBytes(str);
 90                 }
 91                 else if (param is byte[])
 92                 {
 93                     data = (byte[])param;
 94                 }
 95                 else
 96                 {
 97                     var type = param.GetType();
 98 
 99                     if (type.IsGenericType || type.IsArray)
100                     {
101                         data = SerializeList((System.Collections.IEnumerable)param);
102                     }
103                     else if (type.IsGenericTypeDefinition)
104                     {
105                         data = SerializeDic((System.Collections.IDictionary)param);
106                     }
107                     else if (type.IsClass)
108                     {
109                         var ps = type.GetProperties();
110 
111                         if (ps != null && ps.Length > 0)
112                         {
113                             List<object> clist = new List<object>();
114 
115                             foreach (var p in ps)
116                             {
117                                 clist.Add(p.GetValue(param));
118                             }
119                             data = Serialize(clist.ToArray());
120                         }
121                     }
122                 }
123                 len = data.Length;
124             }
125             datas.AddRange(BitConverter.GetBytes(len));
126             if (len > 0)
127             {
128                 datas.AddRange(data);
129             }
130             return datas.Count == 0 ? null : datas.ToArray();
131         }
132 
133 
134         private static byte[] SerializeList(System.Collections.IEnumerable param)
135         {
136             List<byte> list = new List<byte>();
137 
138             if (param != null)
139             {
140                 List<byte> slist = new List<byte>();
141 
142                 foreach (var item in param)
143                 {
144                     var type = item.GetType();
145 
146                     var ps = type.GetProperties();
147                     if (ps != null && ps.Length > 0)
148                     {
149                         List<object> clist = new List<object>();
150                         foreach (var p in ps)
151                         {
152                             clist.Add(p.GetValue(item));
153                         }
154 
155                         var clen = 0;
156 
157                         var cdata = Serialize(clist.ToArray());
158 
159                         if (cdata != null)
160                         {
161                             clen = cdata.Length;
162                         }
163 
164                         slist.AddRange(BitConverter.GetBytes(clen));
165                         slist.AddRange(cdata);
166                     }
167                 }
168 
169                 var len = 0;
170 
171                 if (slist.Count > 0)
172                 {
173                     len = slist.Count;
174                 }
175                 list.AddRange(BitConverter.GetBytes(len));
176                 list.AddRange(slist.ToArray());
177             }
178             return list.ToArray();
179         }
180 
181         private static byte[] SerializeDic(System.Collections.IDictionary param)
182         {
183             List<byte> list = new List<byte>();
184 
185             if (param != null && param.Count > 0)
186             {
187                 foreach (KeyValuePair item in param)
188                 {
189                     var type = item.GetType();
190                     var ps = type.GetProperties();
191                     if (ps != null && ps.Length > 0)
192                     {
193                         List<object> clist = new List<object>();
194                         foreach (var p in ps)
195                         {
196                             clist.Add(p.GetValue(item));
197                         }
198                         var clen = 0;
199 
200                         var cdata = Serialize(clist.ToArray());
201 
202                         if (cdata != null)
203                         {
204                             clen = cdata.Length;
205                         }
206 
207                         list.AddRange(BitConverter.GetBytes(clen));
208                         list.AddRange(cdata);
209                     }
210                 }
211             }
212             return list.ToArray();
213         }
214 
215         /// <summary>
216         /// len+data
217         /// </summary>
218         /// <param name="params"></param>
219         /// <returns></returns>
220         public static byte[] Serialize(params object[] @params)
221         {
222             List<byte> datas = new List<byte>();
223 
224             if (@params != null)
225             {
226                 foreach (var param in @params)
227                 {
228                     datas.AddRange(Serialize(param));
229                 }
230             }
231 
232             return datas.Count == 0 ? null : datas.ToArray();
233         }
234 
235         /// <summary>
236         /// 反序列化
237         /// </summary>
238         /// <param name="types"></param>
239         /// <param name="datas"></param>
240         /// <returns></returns>
241         public static object[] Deserialize(Type[] types, byte[] datas)
242         {
243             List<object> list = new List<object>();
244 
245             var len = 0;
246 
247             byte[] data = null;
248 
249             int offset = 0;
250 
251             for (int i = 0; i < types.Length; i++)
252             {
253                 list.Add(Deserialize(types[i], datas, ref offset));
254             }
255 
256             return list.ToArray();
257         }
258 
259         /// <summary>
260         /// 反序列化
261         /// </summary>
262         /// <param name="type"></param>
263         /// <param name="datas"></param>
264         /// <param name="offset"></param>
265         /// <returns></returns>
266         public static object Deserialize(Type type, byte[] datas, ref int offset)
267         {
268             dynamic obj = null;
269 
270             var len = 0;
271 
272             byte[] data = null;
273 
274             len = BitConverter.ToInt32(datas, offset);
275             offset += 4;
276             if (len > 0)
277             {
278                 data = new byte[len];
279                 Buffer.BlockCopy(datas, offset, data, 0, len);
280                 offset += len;
281 
282                 if (type == typeof(string))
283                 {
284                     obj = Encoding.UTF8.GetString(data);
285                 }
286                 else if (type == typeof(byte))
287                 {
288                     obj = (data);
289                 }
290                 else if (type == typeof(bool))
291                 {
292                     obj = (BitConverter.ToBoolean(data, 0));
293                 }
294                 else if (type == typeof(short))
295                 {
296                     obj = (BitConverter.ToInt16(data, 0));
297                 }
298                 else if (type == typeof(int))
299                 {
300                     obj = (BitConverter.ToInt32(data, 0));
301                 }
302                 else if (type == typeof(long))
303                 {
304                     obj = (BitConverter.ToInt64(data, 0));
305                 }
306                 else if (type == typeof(float))
307                 {
308                     obj = (BitConverter.ToSingle(data, 0));
309                 }
310                 else if (type == typeof(double))
311                 {
312                     obj = (BitConverter.ToDouble(data, 0));
313                 }
314                 else if (type == typeof(decimal))
315                 {
316                     obj = (BitConverter.ToDouble(data, 0));
317                 }
318                 else if (type == typeof(DateTime))
319                 {
320                     var dstr = Encoding.UTF8.GetString(data);
321                     var ticks = long.Parse(dstr.Substring(2));
322                     obj = (new DateTime(ticks));
323                 }
324                 else if (type == typeof(byte[]))
325                 {
326                     obj = (byte[])data;
327                 }
328                 else if (type.IsGenericType)
329                 {
330                     obj = DeserializeList(type, data);
331                 }
332                 else if (type.IsArray)
333                 {
334                     obj = DeserializeArray(type, data);
335                 }
336                 else if (type.IsGenericTypeDefinition)
337                 {
338                     obj = DeserializeDic(type, data);
339                 }
340                 else if (type.IsClass)
341                 {
342                     var instance = Activator.CreateInstance(type);
343 
344                     var ts = new List<Type>();
345 
346                     var ps = type.GetProperties();
347 
348                     if (ps != null)
349                     {
350                         foreach (var p in ps)
351                         {
352                             ts.Add(p.PropertyType);
353                         }
354                         var vas = Deserialize(ts.ToArray(), data);
355 
356                         for (int j = 0; j < ps.Length; j++)
357                         {
358                             try
359                             {
360                                 if (!ps[j].PropertyType.IsGenericType)
361                                 {
362                                     ps[j].SetValue(instance, Convert.ChangeType(vas[j], ps[j].PropertyType), null);
363                                 }
364                                 else
365                                 {
366                                     Type genericTypeDefinition = ps[j].PropertyType.GetGenericTypeDefinition();
367                                     if (genericTypeDefinition == typeof(Nullable<>))
368                                     {
369                                         ps[j].SetValue(instance, Convert.ChangeType(vas[j], Nullable.GetUnderlyingType(ps[j].PropertyType)), null);
370                                     }
371                                     else
372                                     {
373                                         //List<T>问题
374                                         ps[j].SetValue(instance, Convert.ChangeType(vas[j], ps[j].PropertyType), null);
375                                     }
376                                 }
377                             }
378                             catch (Exception ex)
379                             {
380                                 Console.WriteLine("反序列化不支持的类型:" + ex.Message);
381                             }
382                         }
383                     }
384                     obj = (instance);
385                 }
386                 else
387                 {
388                     throw new RPCPamarsException("ParamsSerializeUtil.Deserialize 未定义的类型:" + type.ToString());
389                 }
390 
391             }
392             return obj;
393         }
394 
395 
396         private static object DeserializeList(Type type, byte[] datas)
397         {
398             List<object> result = new List<object>();
399             var stype = type.GenericTypeArguments[0];
400 
401             var len = 0;
402             var offset = 0;
403             //容器大小
404             len = BitConverter.ToInt32(datas, offset);
405             offset += 4;
406             byte[] cdata = new byte[len];
407             Buffer.BlockCopy(datas, offset, cdata, 0, len);
408             offset += len;
409 
410             //子项内容
411             var slen = 0;
412             var soffset = 0;
413             while (soffset < len)
414             {
415                 slen = BitConverter.ToInt32(cdata, soffset);
416                 var sdata = new byte[slen + 4];
417                 Buffer.BlockCopy(cdata, soffset, sdata, 0, slen + 4);
418                 soffset += slen + 4;
419 
420                 if (slen > 0)
421                 {
422                     int lloffset = 0;
423                     var sobj = Deserialize(stype, sdata, ref lloffset);
424                     if (sobj != null)
425                         result.Add(sobj);
426                 }
427                 else
428                 {
429                     result.Add(null);
430                 }
431             }
432             return result;
433         }
434 
435         private static object DeserializeArray(Type type, byte[] datas)
436         {
437             var obj = DeserializeList(type, datas);
438 
439             if (obj == null) return null;
440 
441             var list = (obj as List<object>);
442 
443             return list.ToArray();
444         }
445 
446         private static object DeserializeDic(Type type, byte[] datas)
447         {
448             dynamic obj = null;
449 
450 
451 
452             return obj;
453         }
454     }
455 }

  实现的过程中,一般结构、类都还比较顺利,但是数组、List、Dictionary还是遇到了一些麻烦,暂时先放着,找到办法再说。真要是传这些,目前先用其他序列化成byte[]来做……

远程方法反转

  远程方法反转即是将接收到的数据定位到本地的对象方法上,如果代码生成、参数使用使用泛型反序列化,理论上是可以提升一些性能的;但是一边写服务业务,一边编写定义结构文件、还一边生成服务代码,本地方法都是纳秒级、相对io的速度来讲,如果为了这点性能提升,在使用的时候估计又是一阵@##¥%*#¥@#&##@……,所以还是使用反射、拆箱吧。

  1 /****************************************************************************
  2 *Copyright (c) 2018 Microsoft All Rights Reserved.
  3 *CLR版本: 4.0.30319.42000
  4 *机器名称:WENLI-PC
  5 *公司名称:Microsoft
  6 *命名空间:SAEA.RPC.Common
  7 *文件名: RPCInovker
  8 *版本号: V1.0.0.0
  9 *唯一标识:289c03b9-3910-4e15-8072-93243507689c
 10 *当前的用户域:WENLI-PC
 11 *创建人: yswenli
 12 *电子邮箱:wenguoli_520@qq.com
 13 *创建时间:2018/5/17 14:11:30
 14 *描述:
 15 *
 16 *=====================================================================
 17 *修改标记
 18 *修改时间:2018/5/17 14:11:30
 19 *修改人: yswenli
 20 *版本号: V1.0.0.0
 21 *描述:
 22 *
 23 *****************************************************************************/
 24 using SAEA.RPC.Model;
 25 using SAEA.RPC.Net;
 26 using SAEA.RPC.Serialize;
 27 using SAEA.Sockets.Interface;
 28 using System;
 29 using System.Linq;
 30 using System.Reflection;
 31 
 32 namespace SAEA.RPC.Common
 33 {
 34     /// <summary>
 35     /// RPC将远程调用反转到本地服务
 36     /// </summary>
 37     public class RPCReversal
 38     {
 39         static object _locker = new object();
 40         
 41 
 42         /// <summary>
 43         /// 执行方法
 44         /// </summary>
 45         /// <param name="action"></param>
 46         /// <param name="obj"></param>
 47         /// <param name="args"></param>
 48         /// <returns></returns>
 49         private static object ReversalMethod(MethodInfo action, object obj, object[] args)
 50         {
 51             object result = null;
 52             try
 53             {
 54                 var @params = action.GetParameters();
 55 
 56                 if (@params != null && @params.Length > 0)
 57                 {
 58                     result = action.Invoke(obj, args);
 59                 }
 60                 else
 61                 {
 62                     result = action.Invoke(obj, null);
 63                 }
 64             }
 65             catch (Exception ex)
 66             {
 67                 throw new RPCPamarsException($"{obj}/{action.Name},出现异常:{ex.Message}", ex);
 68             }
 69             return result;
 70         }
 71 
 72 
 73         public static object Reversal(IUserToken userToken, string serviceName, string methodName, object[] inputs)
 74         {
 75             lock (_locker)
 76             {
 77                 try
 78                 {
 79                     var serviceInfo = RPCMapping.Get(serviceName, methodName);
 80 
 81                     if (serviceInfo == null)
 82                     {
 83                         throw new RPCNotFundException($"当前请求找不到:{serviceName}/{methodName}", null);
 84                     }
 85 
 86                     var nargs = new object[] { userToken, serviceName, methodName, inputs };
 87 
 88                     if (serviceInfo.FilterAtrrs != null && serviceInfo.FilterAtrrs.Count > 0)
 89                     {
 90                         foreach (var arr in serviceInfo.FilterAtrrs)
 91                         {
 92                             var goOn = (bool)arr.GetType().GetMethod("OnActionExecuting").Invoke(arr, nargs.ToArray());
 93 
 94                             if (!goOn)
 95                             {
 96                                 return new RPCNotFundException("当前逻辑已被拦截!", null);
 97                             }
 98                         }
 99                     }
100 
101                     if (serviceInfo.ActionFilterAtrrs != null && serviceInfo.ActionFilterAtrrs.Count > 0)
102                     {
103                         foreach (var arr in serviceInfo.ActionFilterAtrrs)
104                         {
105                             var goOn = (bool)arr.GetType().GetMethod("OnActionExecuting").Invoke(arr, nargs.ToArray());
106 
107                             if (!goOn)
108                             {
109                                 return new RPCNotFundException("当前逻辑已被拦截!", null);
110                             }
111                         }
112                     }
113 
114                     var result = ReversalMethod(serviceInfo.Mothd, serviceInfo.Instance, inputs);
115 
116                     nargs = new object[] { userToken, serviceName, methodName, inputs, result };
117 
118                     if (serviceInfo.FilterAtrrs != null && serviceInfo.FilterAtrrs.Count > 0)
119                     {
120                         foreach (var arr in serviceInfo.FilterAtrrs)
121                         {
122                             arr.GetType().GetMethod("OnActionExecuted").Invoke(arr, nargs);
123                         }
124                     }
125 
126                     if (serviceInfo.ActionFilterAtrrs != null && serviceInfo.ActionFilterAtrrs.Count > 0)
127                     {
128                         foreach (var arr in serviceInfo.FilterAtrrs)
129                         {
130                             arr.GetType().GetMethod("OnActionExecuted").Invoke(arr, nargs);
131                         }
132                     }
133                     return result;
134                 }
135                 catch (Exception ex)
136                 {
137                     if (ex.Message.Contains("找不到此rpc方法"))
138                     {
139                         return new RPCNotFundException("找不到此rpc方法", ex);
140                     }
141                     else
142                     {
143                         return new RPCNotFundException("找不到此rpc方法", ex);
144                     }
145                 }
146             }
147         }
148 
149         /// <summary>
150         /// 反转到具体的方法上
151         /// </summary>
152         /// <param name="userToken"></param>
153         /// <param name="msg"></param>
154         /// <returns></returns>
155         public static byte[] Reversal(IUserToken userToken, RSocketMsg msg)
156         {
157             byte[] result = null;
158             try
159             {
160                 object[] inputs = null;
161 
162                 if (msg.Data != null)
163                 {
164                     var ptypes = RPCMapping.Get(msg.ServiceName, msg.MethodName).Pamars.Values.ToArray();
165 
166                     inputs = ParamsSerializeUtil.Deserialize(ptypes, msg.Data);
167                 }
168 
169                 var r = Reversal(userToken, msg.ServiceName, msg.MethodName, inputs);
170 
171                 if (r != null)
172                 {
173                     return ParamsSerializeUtil.Serialize(r);
174                 }
175             }
176             catch (Exception ex)
177             {
178                 throw new RPCPamarsException("RPCInovker.Invoke error:" + ex.Message, ex);
179             }
180             return result;
181 
182         }
183     }
184 }

客户端代码生成

  为了方便客户使用rpc,所以有rpc相关的代码在客户端那肯定是越少越好,如果光服务端方便,客户端估计又要@##¥%*#¥@#&##@……,所以将一些rpc相关代码生成好,客户端透明调用是必须的。

  1 /****************************************************************************
  2 *Copyright (c) 2018 Microsoft All Rights Reserved.
  3 *CLR版本: 4.0.30319.42000
  4 *机器名称:WENLI-PC
  5 *公司名称:Microsoft
  6 *命名空间:SAEA.RPC.Generater
  7 *文件名: CodeGnerater
  8 *版本号: V1.0.0.0
  9 *唯一标识:59ba5e2a-2fd0-444b-a260-ab68c726d7ee
 10 *当前的用户域:WENLI-PC
 11 *创建人: yswenli
 12 *电子邮箱:wenguoli_520@qq.com
 13 *创建时间:2018/5/17 18:30:57
 14 *描述:
 15 *
 16 *=====================================================================
 17 *修改标记
 18 *修改时间:2018/5/17 18:30:57
 19 *修改人: yswenli
 20 *版本号: V1.0.0.0
 21 *描述:
 22 *
 23 *****************************************************************************/
 24 using SAEA.RPC.Common;
 25 using SAEA.RPC.Model;
 26 using System;
 27 using System.Collections.Generic;
 28 using System.IO;
 29 using System.Linq;
 30 using System.Reflection;
 31 using System.Text;
 32 
 33 namespace SAEA.RPC.Generater
 34 {
 35     /// <summary>
 36     /// 代码生成器
 37     /// </summary>
 38     public static class CodeGnerater
 39     {
 40         static string space4 = "    ";
 41 
 42         /// <summary>
 43         /// 获取指定数量的空格
 44         /// </summary>
 45         /// <param name="num"></param>
 46         /// <returns></returns>
 47         static string GetSpace(int num = 1)
 48         {
 49             var sb = new StringBuilder();
 50 
 51             for (int i = 0; i < num; i++)
 52             {
 53                 sb.Append(space4);
 54             }
 55 
 56             return sb.ToString();
 57         }
 58 
 59         /// <summary>
 60         /// 获取变量名
 61         /// </summary>
 62         /// <param name="str"></param>
 63         /// <returns></returns>
 64         static string GetSuffixStr(string str)
 65         {
 66             return "_" + str.Substring(0, 1).ToLower() + str.Substring(1);
 67         }
 68 
 69         /// <summary>
 70         /// 生成代码头部
 71         /// </summary>
 72         /// <returns></returns>
 73         static string Header(params string[] usings)
 74         {
 75             var sb = new StringBuilder();
 76             sb.AppendLine("/*******");
 77             sb.AppendLine($"*此代码为SAEA.RPCGenerater生成 {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}");
 78             sb.AppendLine("*******/" + Environment.NewLine);
 79             sb.AppendLine("using System;");
 80             if (usings != null)
 81             {
 82                 foreach (var u in usings)
 83                 {
 84                     sb.AppendLine(u);
 85                 }
 86             }
 87             return sb.ToString();
 88         }
 89 
 90         static string _proxyStr;
 91 
 92         static List<string> _serviceStrs = new List<string>();
 93 
 94         static Dictionary<string, string> _modelStrs = new Dictionary<string, string>();
 95 
 96         /// <summary>
 97         /// 生成代理代码
 98         /// </summary>
 99         /// <param name="spaceName"></param>
100         internal static void GenerateProxy(string spaceName)
101         {
102             StringBuilder csStr = new StringBuilder();
103             csStr.AppendLine(Header("using SAEA.RPC.Consumer;", $"using {spaceName}.Consumer.Model;", $"using {spaceName}.Consumer.Service;"));
104             csStr.AppendLine($"namespace {spaceName}.Consumer");
105             csStr.AppendLine("{");
106             csStr.AppendLine($"{GetSpace(1)}public class RPCServiceProxy");
107             csStr.AppendLine(GetSpace(1) + "{");
108 
109             csStr.AppendLine(GetSpace(2) + "ServiceConsumer _serviceConsumer;");
110             csStr.AppendLine(GetSpace(2) + "public RPCServiceProxy(string uri = \"rpc://127.0.0.1:39654\") : this(new Uri(uri)){}");
111             csStr.AppendLine(GetSpace(2) + "public RPCServiceProxy(Uri uri)");
112             csStr.AppendLine(GetSpace(2) + "{");
113 
114             csStr.AppendLine(GetSpace(3) + "_serviceConsumer = new ServiceConsumer(uri);");
115 
116             var names = RPCMapping.GetServiceNames();
117 
118             if (names != null)
119             {
120                 foreach (var name in names)
121                 {
122                     csStr.AppendLine(GetSpace(3) + GetSuffixStr(name) + $" = new {name}(_serviceConsumer);");
123                 }
124             }
125             csStr.AppendLine(GetSpace(2) + "}");
126 
127             if (names != null)
128             {
129                 foreach (var name in names)
130                 {
131                     var suffixStr = GetSuffixStr(name);
132 
133                     csStr.AppendLine(GetSpace(2) + $"{name} {suffixStr};");
134                     csStr.AppendLine(GetSpace(2) + $"public {name} {name}");
135                     csStr.AppendLine(GetSpace(2) + "{");
136                     csStr.AppendLine($"{GetSpace(3)} get{{ return {suffixStr}; }}");
137                     csStr.AppendLine(GetSpace(2) + "}");
138 
139                     var list = RPCMapping.GetAll(name);
140                     if (list != null)
141                     {
142                         GenerateService(spaceName, name, list);
143                     }
144                 }
145             }
146 
147             csStr.AppendLine(GetSpace(1) + "}");
148             csStr.AppendLine("}");
149             _proxyStr = csStr.ToString();
150         }
151         /// <summary>
152         /// 生成调用服务代码
153         /// </summary>
154         /// <param name="spaceName"></param>
155         /// <param name="serviceName"></param>
156         /// <param name="methods"></param>
157         internal static void GenerateService(string spaceName, string serviceName, Dictionary<string, ServiceInfo> methods)
158         {
159             StringBuilder csStr = new StringBuilder();
160             csStr.AppendLine($"namespace {spaceName}.Consumer.Service");
161             csStr.AppendLine("{");
162             csStr.AppendLine($"{GetSpace(1)}public class {serviceName}");
163             csStr.AppendLine(GetSpace(1) + "{");
164             csStr.AppendLine(GetSpace(2) + "ServiceConsumer _serviceConsumer;");
165             csStr.AppendLine(GetSpace(2) + $"public {serviceName}(ServiceConsumer serviceConsumer)");
166             csStr.AppendLine(GetSpace(2) + "{");
167             csStr.AppendLine(GetSpace(3) + "_serviceConsumer = serviceConsumer;");
168             csStr.AppendLine(GetSpace(2) + "}");
169 
170             foreach (var item in methods)
171             {
172                 var rtype = item.Value.Mothd.ReturnType;
173 
174                 if (rtype != null)
175                 {
176                     if (!_modelStrs.ContainsKey($"{spaceName}.Consumer.Model.{rtype.Name}"))
177                     {
178                         GenerateModel(spaceName, rtype);
179                     }
180                 }
181 
182                 var argsStr = new StringBuilder();
183 
184                 var argsInput = new StringBuilder();
185 
186                 if (item.Value.Pamars != null)
187                 {
188                     int i = 0;
189                     foreach (var arg in item.Value.Pamars)
190                     {
191                         i++;
192                         argsStr.Append(arg.Value.Name);
193                         argsStr.Append(" ");
194                         argsStr.Append(arg.Key);
195                         if (i < item.Value.Pamars.Count)
196                             argsStr.Append(", ");
197 
198                         if (arg.Value != null && arg.Value.IsClass)
199                         {
200                             if (!_modelStrs.ContainsKey($"{spaceName}.Consumer.Model.{arg.Value.Name}"))
201                             {
202                                 GenerateModel(spaceName, arg.Value);
203                             }
204                         }
205 
206                         argsInput.Append(", ");
207                         argsInput.Append(arg.Key);
208                     }
209                 }
210 
211                 csStr.AppendLine(GetSpace(2) + $"public {rtype.Name} {item.Key}({argsStr.ToString()})");
212                 csStr.AppendLine(GetSpace(2) + "{");
213                 csStr.AppendLine(GetSpace(3) + $"return _serviceConsumer.RemoteCall<{rtype.Name}>(\"{serviceName}\", \"{item.Key}\"{argsInput.ToString()});");
214                 csStr.AppendLine(GetSpace(2) + "}");
215 
216 
217             }
218 
219             csStr.AppendLine(GetSpace(1) + "}");
220             csStr.AppendLine("}");
221             _serviceStrs.Add(csStr.ToString());
222         }
223 
224         /// <summary>
225         /// 生成实体代码
226         /// </summary>
227         /// <typeparam name="T"></typeparam>
228         /// <param name="t"></param>
229         /// <returns></returns>
230         internal static void GenerateModel(string spaceName, Type type)
231         {
232             if (!IsModel(type)) return;
233             StringBuilder csStr = new StringBuilder();
234             csStr.AppendLine($"namespace {spaceName}.Consumer.Model");
235             csStr.AppendLine("{");
236             csStr.AppendLine($"{GetSpace(1)}public class {type.Name}");
237             csStr.AppendLine(GetSpace(1) + "{");
238             var ps = type.GetProperties();
239             foreach (var p in ps)
240             {
241                 csStr.AppendLine($"{GetSpace(2)}public {p.PropertyType.Name} {p.Name}");
242                 csStr.AppendLine(GetSpace(2) + "{");
243                 csStr.AppendLine(GetSpace(3) + "get;set;");
244                 csStr.AppendLine(GetSpace(2) + "}");
245             }
246             csStr.AppendLine(GetSpace(1) + "}");
247             csStr.AppendLine("}");
248             _modelStrs.Add($"{spaceName}.Consumer.Model.{type.Name}", csStr.ToString());
249         }
250 
251         /// <summary>
252         /// 是否是实体
253         /// </summary>
254         /// <param name="type"></param>
255         /// <returns></returns>
256         internal static bool IsModel(Type type)
257         {
258             if (type.IsArray || type.IsSealed || !type.IsClass)
259             {
260                 return false;
261             }
262             return true;
263         }
264 
265         /// <summary>
266         /// 生成客户端C#代码文件
267         /// </summary>
268         /// <param name="folder"></param>
269         /// <param name="spaceName"></param>
270         public static void Generate(string folder, string spaceName)
271         {
272             RPCMapping.RegistAll();
273 
274             GenerateProxy(spaceName);
275 
276             var filePath = Path.Combine(folder, "RPCServiceProxy.cs");
277 
278             StringBuilder sb = new StringBuilder();
279 
280             sb.AppendLine(_proxyStr);
281 
282             if (_serviceStrs != null && _serviceStrs.Count > 0)
283             {
284                 foreach (var serviceStr in _serviceStrs)
285                 {
286                     sb.AppendLine(serviceStr);
287                 }
288             }
289 
290             if (_modelStrs != null && _modelStrs.Count > 0)
291             {
292                 foreach (var entry in _modelStrs)
293                 {
294                     sb.AppendLine(entry.Value);
295                 }
296             }
297 
298             if (File.Exists(filePath))
299                 File.Delete(filePath);
300 
301             File.WriteAllText(filePath, sb.ToString(), Encoding.UTF8);
302         }
303 
304 
305     }
306 }

  无论在服务端根据数据将远程调用反转本地方法、还是生成客户端代码的过程都离不开服务结构的问题。如果是根据结构文件来处理,则先要编写结构文件;服务端码农活不重事不多啊?文档没发你啊?啥锅都往这边甩……此处省略一万字。另外一种方式就是类似web mvc采用约定方式,写完服务业务代码后,再自动生成结构并缓存在内存里。

  1 /****************************************************************************
  2 *Copyright (c) 2018 Microsoft All Rights Reserved.
  3 *CLR版本: 4.0.30319.42000
  4 *机器名称:WENLI-PC
  5 *公司名称:Microsoft
  6 *命名空间:SAEA.RPC.Provider
  7 *文件名: ServiceTable
  8 *版本号: V1.0.0.0
  9 *唯一标识:e95f1d0b-f172-49c7-b75f-67f333504260
 10 *当前的用户域:WENLI-PC
 11 *创建人: yswenli
 12 *电子邮箱:wenguoli_520@qq.com
 13 *创建时间:2018/5/16 17:46:34
 14 *描述:
 15 *
 16 *=====================================================================
 17 *修改标记
 18 *修改时间:2018/5/16 17:46:34
 19 *修改人: yswenli
 20 *版本号: V1.0.0.0
 21 *描述:
 22 *
 23 *****************************************************************************/
 24 using SAEA.Commom;
 25 using SAEA.RPC.Model;
 26 using System;
 27 using System.Collections.Concurrent;
 28 using System.Collections.Generic;
 29 using System.Diagnostics;
 30 using System.Linq;
 31 using System.Reflection;
 32 
 33 namespace SAEA.RPC.Common
 34 {
 35     /// <summary>
 36     /// 服务类缓存表
 37     /// md5+ServiceInfo反射结果
 38     /// </summary>
 39     internal static class RPCMapping
 40     {
 41         static object _locker = new object();
 42 
 43         static HashMap<string, string, ServiceInfo> _serviceMap = new HashMap<string, string, ServiceInfo>();
 44 
 45         /// <summary>
 46         /// 本地注册RPC服务缓存
 47         /// </summary>
 48         public static HashMap<string, string, ServiceInfo> ServiceMap
 49         {
 50             get
 51             {
 52                 return _serviceMap;
 53             }
 54         }
 55 
 56         /// <summary>
 57         /// 本地注册RPC服务
 58         /// </summary>
 59         /// <param name="type"></param>
 60         public static void Regist(Type type)
 61         {
 62             lock (_locker)
 63             {
 64                 var serviceName = type.Name;
 65 
 66                 if (IsRPCService(type))
 67                 {
 68                     var methods = type.GetMethods();
 69 
 70                     var rms = GetRPCMehod(methods);
 71 
 72                     if (rms.Count > 0)
 73                     {
 74                         foreach (var m in rms)
 75                         {
 76                             var serviceInfo = new ServiceInfo()
 77                             {
 78                                 Type = type,
 79                                 Instance = Activator.CreateInstance(type),
 80                                 Mothd = m,
 81                                 Pamars = m.GetParameters().ToDic()
 82                             };
 83 
 84                             List<object> iAttrs = null;
 85 
 86                             //类上面的过滤
 87                             var attrs = type.GetCustomAttributes(true);
 88 
 89                             if (attrs != null && attrs.Length > 0)
 90                             {
 91                                 var classAttrs = attrs.Where(b => b.GetType().BaseType.Name == "ActionFilterAttribute").ToList();
 92 
 93                                 if (classAttrs != null && classAttrs.Count > 0)
 94 
 95                                     iAttrs = classAttrs;
 96 
 97                             }
 98 
 99                             serviceInfo.FilterAtrrs = iAttrs;
100 
101                             //action上面的过滤
102                             var actionAttrs = m.GetCustomAttributes(true);
103 
104                             if (actionAttrs != null)
105                             {
106                                 var filterAttrs = attrs.Where(b => b.GetType().BaseType.Name == "ActionFilterAttribute").ToList();
107 
108                                 if (filterAttrs != null && filterAttrs.Count > 0)
109 
110                                     serviceInfo.ActionFilterAtrrs = filterAttrs;
111                             }
112 
113                             _serviceMap.Set(serviceName, m.Name, serviceInfo);
114                         }
115                     }
116                 }
117             }
118         }
119 
120         /// <summary>
121         /// 本地注册RPC服务
122         /// 若为空,则默认全部注册带有ServiceAttribute的服务
123         /// </summary>
124         /// <param name="types"></param>
125         public static void Regists(params Type[] types)
126         {
127             if (types != null)
128                 foreach (var type in types)
129                 {
130                     Regist(type);
131                 }
132             else
133                 RegistAll();
134         }
135         /// <summary>
136         /// 全部注册带有ServiceAttribute的服务
137         /// </summary>
138         public static void RegistAll()
139         {
140             StackTrace ss = new StackTrace(true);
141             MethodBase mb = ss.GetFrame(2).GetMethod();
142             var space = mb.DeclaringType.Namespace;
143             var tt = mb.DeclaringType.Assembly.GetTypes();
144             Regists(tt);
145         }
146 
147         /// <summary>
148         /// 判断类是否是RPCService
149         /// </summary>
150         /// <param name="type"></param>
151         /// <returns></returns>
152         public static bool IsRPCService(Type type)
153         {
154             var isService = false;
155             var cAttrs = type.GetCustomAttributes(true);
156             if (cAttrs != null)
157             {
158                 foreach (var cAttr in cAttrs)
159                 {
160                     if (cAttr is RPCServiceAttribute)
161                     {
162                         isService = true;
163                         break;
164                     }
165                 }
166             }
167             return isService;
168         }
169 
170         /// <summary>
171         /// 获取RPC方法集合
172         /// </summary>
173         /// <param name="mInfos"></param>
174         /// <returns></returns>
175         public static List<MethodInfo> GetRPCMehod(MethodInfo[] mInfos)
176         {
177             List<MethodInfo> result = new List<MethodInfo>();
178             if (mInfos != null)
179             {
180                 var isRPC = false;
181                 foreach (var method in mInfos)
182                 {
183                     if (method.IsAbstract || method.IsConstructor || method.IsFamily || method.IsPrivate || method.IsStatic || method.IsVirtual)
184                     {
185                         break;
186                     }
187                     
188                     isRPC = true;
189                     var attrs = method.GetCustomAttributes(true);
190                     if (attrs != null)
191                     {
192                         foreach (var attr in attrs)
193                         {
194                             if (attr is NoRpcAttribute)
195                             {
196                                 isRPC = false;
197                                 break;
198                             }
199                         }
200                     }
201                     if (isRPC)
202                     {
203                         result.Add(method);
204                     }
205                 }
206             }
207             return result;
208         }
209 
210         /// <summary>
211         /// 转换成字典
212         /// </summary>
213         /// <param name="parameterInfos"></param>
214         /// <returns></returns>
215         public static Dictionary<string, Type> ToDic(this ParameterInfo[] parameterInfos)
216         {
217             if (parameterInfos == null) return null;
218 
219             Dictionary<string, Type> dic = new Dictionary<string, Type>();
220 
221             foreach (var p in parameterInfos)
222             {
223                 dic.Add(p.Name, p.ParameterType);
224             }
225 
226             return dic;
227         }
228 
229 
230         /// <summary>
231         /// 获取缓存内容
232         /// </summary>
233         /// <param name="serviceName"></param>
234         /// <param name="methodName"></param>
235         /// <returns></returns>
236         public static ServiceInfo Get(string serviceName, string methodName)
237         {
238             lock (_locker)
239             {
240                 return _serviceMap.Get(serviceName, methodName);
241             }
242         }
243 
244         /// <summary>
245         /// 获取缓存内容
246         /// </summary>
247         /// <returns></returns>
248         public static List<string> GetServiceNames()
249         {
250             lock (_locker)
251             {
252                 return _serviceMap.GetHashIDs();
253             }
254         }
255         /// <summary>
256         /// 获取服务的全部信息
257         /// </summary>
258         /// <param name="serviceName"></param>
259         /// <returns></returns>
260         public static Dictionary<string, ServiceInfo> GetAll(string serviceName)
261         {
262             lock (_locker)
263             {
264                 return _serviceMap.GetAll(serviceName);
265             }
266         }
267 
268 
269 
270     }
271 }

测试

  至此几个关键点都完成了,下面是vs2017的代码结构:

  SAEA.RPCTest是测试项目,Provider为模拟服务端代码、RPCServiceProxy为生成器根据服务端生成的客户端代码,Program.cs中是使用SAEA.RPC使用、测试代码:

  1 using SAEA.Commom;
  2 using SAEA.RPC.Provider;
  3 using SAEA.RPCTest.Consumer;
  4 //using SAEA.RPCTest.Consumer;
  5 using System;
  6 using System.Diagnostics;
  7 using System.Threading;
  8 using System.Threading.Tasks;
  9 
 10 namespace SAEA.RPCTest
 11 {
 12     class Program
 13     {
 14         static void Main(string[] args)
 15         {
 16             ConsoleHelper.WriteLine($"SAEA.RPC功能测试: {Environment.NewLine}   p 启动rpc provider{Environment.NewLine}   c 启动rpc consumer{Environment.NewLine}   g 启动rpc consumer代码生成器");
 17 
 18             var inputStr = ConsoleHelper.ReadLine();
 19 
 20             if (string.IsNullOrEmpty(inputStr))
 21             {
 22                 inputStr = "p";
 23             }
 24 
 25             if (inputStr == "c")
 26             {
 27                 ConsoleHelper.WriteLine("开始Consumer测试!");
 28                 ConsumerInit();
 29                 ConsoleHelper.WriteLine("回车结束!");
 30                 ConsoleHelper.ReadLine();
 31             }
 32             else if (inputStr == "a")
 33             {
 34                 ProviderInit();
 35                 ConsoleHelper.WriteLine("回车开始Consumer测试!");
 36                 ConsoleHelper.ReadLine();
 37                 ConsumerInit();
 38                 ConsoleHelper.WriteLine("回车结束!");
 39                 ConsoleHelper.ReadLine();
 40             }
 41             else if (inputStr == "g")
 42             {
 43                 ConsoleHelper.WriteLine("正在代码生成中...");
 44                 Generate();
 45                 ConsoleHelper.WriteLine("代码生成完毕,回车结束!");
 46                 ConsoleHelper.ReadLine();
 47             }
 48             else
 49             {
 50                 ProviderInit();
 51                 ConsoleHelper.WriteLine("回车结束!");
 52                 ConsoleHelper.ReadLine();
 53             }
 54         }
 55 
 56 
 57         static void ProviderInit()
 58         {
 59             ConsoleHelper.Title = "SAEA.RPC.Provider";
 60             ConsoleHelper.WriteLine("Provider正在启动HelloService。。。");
 61             var sp = new ServiceProvider(new Type[] { typeof(Provider.HelloService) });
 62             sp.Start();
 63             ConsoleHelper.WriteLine("Provider就绪!");
 64         }
 65 
 66         static void Generate()
 67         {
 68             RPC.Generater.CodeGnerater.Generate(PathHelper.Current, "SAEA.RPCTest");
 69         }
 70 
 71         static void ConsumerInit()
 72         {
 73             ConsoleHelper.Title = "SAEA.RPC.Consumer";
 74 
 75             var url = "rpc://127.0.0.1:39654";
 76 
 77             ConsoleHelper.WriteLine($"Consumer正在连接到{url}...");
 78 
 79             RPCServiceProxy cp = new RPCServiceProxy(url);
 80 
 81             ConsoleHelper.WriteLine("Consumer连接成功");
 82 
 83             ConsoleHelper.WriteLine("HelloService/Hello:" + cp.HelloService.Hello());
 84             ConsoleHelper.WriteLine("HelloService/Plus:" + cp.HelloService.Plus(1, 9));
 85             ConsoleHelper.WriteLine("HelloService/Update/UserName:" + cp.HelloService.Update(new Consumer.Model.UserInfo() { ID = 1, UserName = "yswenli" }).UserName);
 86             ConsoleHelper.WriteLine("HelloService/GetGroupInfo/Creator.UserName:" + cp.HelloService.GetGroupInfo(1).Creator.UserName);
 87             ConsoleHelper.WriteLine("HelloService/SendData:" + System.Text.Encoding.UTF8.GetString(cp.HelloService.SendData(System.Text.Encoding.UTF8.GetBytes("Hello Data"))));
 88             ConsoleHelper.WriteLine("回车启动性能测试!");
 89 
 90             ConsoleHelper.ReadLine();
 91 
 92             #region 性能测试
 93 
 94             Stopwatch sw = new Stopwatch();
 95 
 96             int count = 1000000;
 97 
 98             ConsoleHelper.WriteLine($"{count} 次实体传输调用测试中...");
 99 
100             var ui = new Consumer.Model.UserInfo() { ID = 1, UserName = "yswenli" };
101 
102             sw.Start();
103 
104             for (int i = 0; i < count; i++)
105             {
106                 cp.HelloService.Update(ui);
107             }
108             ConsoleHelper.WriteLine($"实体传输:{count * 1000 / sw.ElapsedMilliseconds} 次/秒");
109 
110             sw.Stop();
111 
112             #endregion
113 
114 
115 
116         }
117     }
118 }

  在命令行中将SAEA.RPCTest发布输入dotnet pulish -r win7-x64后运行exe如下:

至此一个使用方便、高性能rpc就初步完成了。

转载请标明本文来源:https://www.cnblogs.com/yswenli/p/9097217.html
更多内容欢迎star/fork作者的github:https://github.com/yswenli/SAEA
如果发现本文有什么问题和任何建议,也随时欢迎交流~

posted @ 2018-05-27 20:22  yswenli  阅读(2573)  评论(7编辑  收藏  举报