add log

src/AutofacWihtAOP/AutofacWihtAOP/AutofacWihtAOP.csproj

@@ -56,8 +56,18 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="FieldAttribute.cs" />
+    <Compile Include="FunctionAttribute.cs" />
+    <Compile Include="ILogService.cs" />
+    <Compile Include="IUserService.cs" />
+    <Compile Include="LogFilter.cs" />
+    <Compile Include="LogInterceptor.cs" />
+    <Compile Include="LogModel.cs" />
+    <Compile Include="LogService.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="UserModel.cs" />
+    <Compile Include="UserService.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />

src/AutofacWihtAOP/AutofacWihtAOP/FieldAttribute.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace AutofacWihtAOP
+{
+    public class FieldAttribute : Attribute
+    {
+        public string Name { get; set; }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/FunctionAttribute.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace AutofacWihtAOP
+{
+    public class FunctionAttribute : Attribute
+    {
+        public string Name { get; set; }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/ILogService.cs

@@ -0,0 +1,8 @@
+namespace AutofacWihtAOP
+{
+    public interface ILogService
+    {
+        LogModel GetLastLog(LogFilter filter);
+        void AddLog(LogModel model);
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/IUserService.cs

@@ -0,0 +1,7 @@
+namespace AutofacWihtAOP
+{
+    public interface IUserService
+    {
+        void ModifyUserInfo(UserModel model);
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/LogFilter.cs

@@ -0,0 +1,9 @@
+namespace AutofacWihtAOP
+{
+    public class LogFilter
+    {
+        public string FunctionName { get; set; }
+        public string FieldName { get; set; }
+        public string UserCode { get; set; }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/LogInterceptor.cs

@@ -0,0 +1,114 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using Castle.DynamicProxy;
+
+namespace AutofacWihtAOP
+{
+    public class LogInterceptor : IInterceptor
+    {
+        private ILogService _logService;
+
+        public LogInterceptor(ILogService logservice)
+        {
+            _logService = logservice;
+        }
+
+        public void Intercept(IInvocation invocation)
+        {
+            var models = invocation.Arguments.Where(Ext.IsAttributeType<FunctionAttribute>);
+
+            var selectMany = models.SelectMany(x=> x.GetType().GetPropertiesBy<FieldAttribute>(), 
+                (model,prop)=> new
+                {
+                    CurrentValue = prop.GetValue(model),
+                    FieldName = prop.GetAttributeValue((FieldAttribute z) => z.Name),
+                    functionName = model.GetType()
+                        .GetAttributeValue((FunctionAttribute attr) => attr.Name)
+                });
+
+            foreach (var prop in selectMany)
+            {
+                
+                var lastLog = _logService.GetLastLog(new LogFilter()
+                {
+                    FieldName = prop.FieldName,
+                    FunctionName = prop.functionName
+                });
+
+                var logModel = new LogModel()
+                {
+                    UserCode = "Dnaiel",
+                    FunctionName = prop.functionName,
+                    FieldName = prop.FieldName,
+                    NewValue = prop.CurrentValue?.ToString()
+                };
+
+                if (lastLog != null)
+                    logModel.OldValue = lastLog.NewValue;
+                else
+                    logModel.OldValue = string.Empty;
+
+                _logService.AddLog(logModel);
+            }
+        }
+    }
+
+    public static class Ext
+    {
+        public static IEnumerable<PropertyInfo> GetPropertiesBy<T>
+            (this Type type,bool inherit = true) 
+            where T : Attribute
+        {
+            if (type == null)
+                throw new Exception("type can't be null");
+            
+
+            return type.GetProperties()
+                       .Where(x => x.GetCustomAttribute<T>(inherit) != null);
+        }
+
+        public static bool IsAttributeType<TAttr>(this object obj)
+            where TAttr : Attribute
+        {
+            return IsAttributeType<TAttr>(obj, true);
+        }
+
+        public static bool IsAttributeType<TAttr>(this object obj,bool inherit)
+            where TAttr : Attribute
+        {
+            return obj.GetType()
+                       .GetCustomAttribute<TAttr>(inherit) != null;
+        }
+
+        public static TRtn GetAttributeValue<TAttr, TRtn>(this PropertyInfo prop,
+            Func<TAttr,TRtn> selector)
+            where  TAttr : Attribute
+        {
+            TRtn result = default(TRtn);
+
+            var attr = prop.GetCustomAttribute<TAttr>();
+
+            if (selector == null || attr == null)
+                return result;
+
+            return selector(attr);
+        }
+
+        public static TRtn GetAttributeValue<TAttr, TRtn>(this Type prop,
+            Func<TAttr, TRtn> selector)
+            where TAttr : Attribute
+        {
+            TRtn result = default(TRtn);
+
+            var attr = prop.GetCustomAttribute<TAttr>();
+
+            if (selector == null || attr == null)
+                return result;
+
+            return selector(attr);
+        }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/LogModel.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace AutofacWihtAOP
+{
+    public class LogModel
+    {
+        public DateTime CreateDate { get; set; } = DateTime.Now;
+
+        public string OldValue { get; set; }
+
+        public string NewValue { get; set; }
+
+        public string UserCode { get; set; }
+
+        public string FunctionName { get; set; }
+
+        public string FieldName { get; set; }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/LogService.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace AutofacWihtAOP
+{
+    public class LogService : ILogService
+    {
+        List<LogModel> _list = new List<LogModel>();
+
+        public LogModel GetLastLog(LogFilter filter)
+        {
+            return _list.OrderBy(x => x.CreateDate)
+                .FirstOrDefault(x=>
+                    x.FieldName == filter.FieldName && 
+                    x.FunctionName == filter.FunctionName );
+        }
+
+        public void AddLog(LogModel model)
+        {
+            _list.Add(model);
+        }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/Program.cs

@@ -11,6 +11,8 @@ using Autofac;
 using Autofac.Builder;
 using Autofac.Extras.DynamicProxy;
 using Castle.DynamicProxy;
+using static System.Convert;
+
 namespace AutofacWihtAOP
 {
     public interface ITimeService
@@ -69,6 +71,7 @@ namespace AutofacWihtAOP
 
     class Program
     {
+
         static void Main(string[] args)
         {
 
@@ -76,9 +79,17 @@ namespace AutofacWihtAOP
 
             IPerson person = container.Resolve<IPerson>();
 
-            Console.WriteLine(person.SaySomething());
-            Thread.Sleep(5000);
-            Console.WriteLine(person.SaySomething());
+            //Console.WriteLine(person.SaySomething());
+            //Thread.Sleep(5000);
+            //Console.WriteLine(person.SaySomething());
+
+            IUserService personService = container.Resolve<IUserService>();
+
+            personService.ModifyUserInfo(new UserModel()
+            {
+                Birthday = DateTime.Now,
+                Phone = "0911181212"
+            });
 
             Console.ReadKey();
         }
@@ -88,11 +99,20 @@ namespace AutofacWihtAOP
             var builder = new ContainerBuilder();
 
             builder.RegisterType<TimeInterceptor>(); //註冊攔截器
+            builder.RegisterType<LogInterceptor>(); //註冊攔截器
+
+            builder.RegisterType<LogService>()
+                .As<ILogService>();
 
             builder.RegisterType<Person>()
                     .As<IPerson>()
                     .EnableInterfaceInterceptors();
 
+            builder.RegisterType<UserService>()
+                .As<IUserService>()
+                .EnableInterfaceInterceptors();
+
+            
             //註冊時間Service
             builder.RegisterType<TimeService>().As<ITimeService>();
 

src/AutofacWihtAOP/AutofacWihtAOP/UserModel.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace AutofacWihtAOP
+{
+    [Function(Name = "Login")]
+    public class UserModel
+    {
+        [Field(Name = "Phone")]
+        public string Phone { get; set; }
+        [Field(Name = "Birthday")]
+        public DateTime Birthday { get; set; }
+    }
+}

src/AutofacWihtAOP/AutofacWihtAOP/UserService.cs

@@ -0,0 +1,13 @@
+using Autofac.Extras.DynamicProxy;
+
+namespace AutofacWihtAOP
+{
+    [Intercept(typeof(LogInterceptor))]
+    public class UserService:IUserService
+    {
+        public void ModifyUserInfo(UserModel model)
+        {
+            
+        }
+    }
+}