AssemblyManager 程序集管理器

AssemblyManager 程序集管理器

程序执行中使用反射对框架的搭建有着强大的影响，如何管理程序集方便使用反射获取类型操作对象是本文章的重点

1.AssemblyInfo

对于一个程序集这里使用一个AssemblyInfo对象进行管理

• Assembly ：对应的程序集
• AssemblyTypeList ：该程序集中所有对象的类型（包括接口、抽象类等）
• AssemblyTypeGroupList ：一个key对应多个值的字典存储对应的接口对应的派生类（Key：某个接口类型，Value：继承这个接口的类对象类型）

        public Assembly Assembly { get; private set; }public readonly List<Type> AssemblyTypeList = new List<Type>();public readonly OneToManyList<Type, Type> AssemblyTypeGroupList = new OneToManyList<Type, Type>();

完整的AssemblyInfo代码

    public sealed class AssemblyInfo{public Assembly Assembly { get; private set; }public readonly List<Type> AssemblyTypeList = new List<Type>();public readonly OneToManyList<Type, Type> AssemblyTypeGroupList = new OneToManyList<Type, Type>();public void Load(Assembly assembly){Assembly = assembly;Type[] assemblyTypes = Assembly.GetTypes();foreach (Type type in assemblyTypes) {if (type.IsAbstract || type.IsInterface)continue;Type[] interfaces = type.GetInterfaces();foreach (Type interfaceType in interfaces){AssemblyTypeGroupList.Add(interfaceType, type);}}AssemblyTypeList.AddRange(assemblyTypes);}public void UnLoad(){AssemblyTypeList.Clear();AssemblyTypeGroupList.Clear();}}

2.AssemblyManager

三个事件（加载某个程序集事件、卸载某个程序集事件、重新加载某个程序集事件）
字典对应的是程序集名称（使用int）对应的程序集信息AssemblyInfo

        public static event Action<int> OnLoadAssemblyEvent;public static event Action<int> OnUnLoadAssemblyEvent;public static event Action<int> OnReLoadAssemblyEvent;private static Dictionary<int, AssemblyInfo> AssemblyList = new Dictionary<int, AssemblyInfo>();

主要方法加载某个程序集

        public static void LoadAssembly(int assemblyName, Assembly assembly){bool isReload = false;if (!AssemblyList.TryGetValue(assemblyName, out AssemblyInfo assemblyInfo)){assemblyInfo = new AssemblyInfo();AssemblyList.Add(assemblyName, assemblyInfo);}else{isReload = true;assemblyInfo.UnLoad();if (OnUnLoadAssemblyEvent != null){OnUnLoadAssemblyEvent(assemblyName);}}assemblyInfo.Load(assembly);if (OnLoadAssemblyEvent != null){OnLoadAssemblyEvent(assemblyName);}if (isReload && OnReLoadAssemblyEvent != null){OnReLoadAssemblyEvent(assemblyName);}}

其余遍历程序集方法，根据不同的方式去遍历程序集

完整AssemblyManager代码

    public static class AssemblyManager{public static event Action<int> OnLoadAssemblyEvent;public static event Action<int> OnUnLoadAssemblyEvent;public static event Action<int> OnReLoadAssemblyEvent;private static Dictionary<int, AssemblyInfo> AssemblyList = new Dictionary<int, AssemblyInfo>();public static void LoadAssembly(int assemblyName, Assembly assembly){bool isReload = false;if (!AssemblyList.TryGetValue(assemblyName, out AssemblyInfo assemblyInfo)){assemblyInfo = new AssemblyInfo();AssemblyList.Add(assemblyName, assemblyInfo);}else{isReload = true;assemblyInfo.UnLoad();if (OnUnLoadAssemblyEvent != null){OnUnLoadAssemblyEvent(assemblyName);}}assemblyInfo.Load(assembly);if (OnLoadAssemblyEvent != null){OnLoadAssemblyEvent(assemblyName);}if (isReload && OnReLoadAssemblyEvent != null){OnReLoadAssemblyEvent(assemblyName);}}public static IEnumerable<int> ForeachAssemblyName(){foreach (int assemblyName in AssemblyList.Keys){yield return assemblyName;}}public static IEnumerable<Type> Foreach(){foreach (AssemblyInfo assemblyInfo in AssemblyList.Values){foreach (Type type in assemblyInfo.AssemblyTypeList){yield return type;}}}public static IEnumerable<Type> Foreach(int assemblyName){if (!AssemblyList.TryGetValue(assemblyName, out AssemblyInfo assemblyInfo))yield break;foreach (Type type in assemblyInfo.AssemblyTypeList) { yield return type; }}public static IEnumerable<Type> Foreach(Type findType){foreach (AssemblyInfo assemblyInfo in AssemblyList.Values){if(!assemblyInfo.AssemblyTypeGroupList.TryGetValue(findType,out List<Type> assemblyLoad))yield break;foreach (Type type in assemblyLoad){yield return type;}}}public static IEnumerable<Type> Foreach(int assemblyName, Type findType){if (!AssemblyList.TryGetValue(assemblyName, out AssemblyInfo assemblyInfo))yield break;if(!assemblyInfo.AssemblyTypeGroupList.TryGetValue(findType,out List<Type> classList))yield break;foreach(Type type in classList)yield return type;}public static Assembly GetAssembly(int assemblyName){return !AssemblyList.TryGetValue(assemblyName, out AssemblyInfo assemblyInfo) ? null : assemblyInfo.Assembly;}public static void Dispose(){foreach (AssemblyInfo assemblyInfo in AssemblyList.Values){assemblyInfo.UnLoad();}AssemblyList.Clear();if(OnLoadAssemblyEvent != null){foreach (var @delegate in OnLoadAssemblyEvent.GetInvocationList()){OnLoadAssemblyEvent -= @delegate as Action<int>;}}if (OnUnLoadAssemblyEvent != null){foreach (var @delegate in OnUnLoadAssemblyEvent.GetInvocationList()){OnUnLoadAssemblyEvent -= @delegate as Action<int>;}}if (OnReLoadAssemblyEvent != null){foreach (var @delegate in OnReLoadAssemblyEvent.GetInvocationList()){OnReLoadAssemblyEvent -= @delegate as Action<int>;}}OnLoadAssemblyEvent = null;OnUnLoadAssemblyEvent = null;OnReLoadAssemblyEvent = null;}}

3.测试

准备测试的类和接口

    public interface ITest1{}public interface ITest2{}public class TestClass0 {}public class TestClass1 : ITest1{}public class TestClass2 : ITest2{}public class TestClass3 : ITest1, ITest2{}

进行测试代码

public class Program{static void Main(string[] args){AssemblyManager.OnLoadAssemblyEvent += (assemblyName) =>{Console.WriteLine($"加载程序集 : {assemblyName}");};AssemblyManager.OnReLoadAssemblyEvent += (assemblyName) =>{Console.WriteLine($"重新加载程序集 : {assemblyName}");};AssemblyManager.OnUnLoadAssemblyEvent += (assemblyName) =>{Console.WriteLine($"卸载程序集 : {assemblyName}");};AssemblyManager.LoadAssembly(1, typeof(Program).Assembly);foreach (Type type in AssemblyManager.Foreach()){Console.WriteLine(type.FullName);}Console.WriteLine("=================================");foreach (Type type in AssemblyManager.Foreach(1,typeof(ITest1))){Console.WriteLine(type.FullName);}Console.WriteLine("=================================");foreach (Type type in AssemblyManager.Foreach(1, typeof(ITest2))){Console.WriteLine(type.FullName);}Console.ReadKey();}}

执行结果