[Architect] Abp 框架原理解析(1) Module

本节目录

• Abp介绍
• Abp源码分析
• 代码实现

 

Abp介绍

学习了一段时间的Abp,领略了一下前辈的架构.总结还是SOLID,降低耦合性.

虽然从架构上说甚至不依赖于DI框架,但实际上在基础框架中还是有一定的必须依赖Castle Windsor.

Abp依靠IOC和AOP实现了大量的自动化.

其中Module设计,是Abp的核心.

 

Abp源码分析

Abp的入口:AbpBootstrapper.Initialize()

此方法中做了各种配置的注册及初始化.

最重要的是AbpModuleManager的初始化.

 

在这个初始化代码中

先查询出所有的module,根据依赖关系排序后.并保证AbpKernelModule为第一.

然后初始化module,所有module依次调用PreInitialize、Initialize、PostInitialize

 

代码实现

定义AbpModule

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public class AbpModule {     public virtual void PreInitialize() { }     public virtual void Initialize() { }     public virtual void PostInitialize() { } }

 

定义2个module

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public class ApplicationModule : AbpModule {     public override void PreInitialize()     {         Console.WriteLine("ApplicationModule's PreInitialize is called");     }       public override void Initialize()     {         Console.WriteLine("ApplicationModule's Initialize is called");     }       public override void PostInitialize()     {         Console.WriteLine("ApplicationModule's PostInitialize is called");     } }   public class CoreModule : AbpModule {     public override void PreInitialize()     {         Console.WriteLine("CoreModule's PreInitialize is called");     }       public override void Initialize()     {         Console.WriteLine("CoreModule's Initialize is called");     }       public override void PostInitialize()     {         Console.WriteLine("CoreModule's PostInitialize is called");     } }

 

定义IoCManager

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public class IocManager {     public static IocManager Instance { get; private set; }       public IWindsorContainer IocContainer { get; private set; }       static IocManager()     {         Instance = new IocManager();     }       public IocManager()     {         IocContainer = new WindsorContainer();         //Register self!         IocContainer.Register(             Component.For<IocManager>().UsingFactoryMethod(() => this)             );     } }

 

实现AbpBootstrapper

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public class AbpBootstrapper {     public IocManager IocManager { get; private set; }     public AbpBootstrapper()     {         IocManager = IocManager.Instance;     }     public virtual void Initialize()     {         InitializeModules();     }     private void InitializeModules()     {         var types = Assembly.GetExecutingAssembly().GetTypes();         var moduleTypes = new List<Type>();         var modules = new List<AbpModule>();         foreach (var type in types)         {             if (typeof(AbpModule).IsAssignableFrom(type))             {                 moduleTypes.Add(type);                 IocManager.IocContainer.Register(Component.For(type));             }         }         foreach (var module in moduleTypes)         {             var obj = IocManager.IocContainer.Resolve(module) as AbpModule;             modules.Add(obj);         }         modules.ForEach(x => x.PreInitialize());         modules.ForEach(x => x.Initialize());         modules.ForEach(x => x.PostInitialize());     } }

 

执行

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class Program {     static void Main(string[] args)     {         var booter = new AbpBootstrapper();         booter.Initialize();           Console.ReadKey();     } }

 

Abp原理如上,只是在本例中并未做dependency排序处理.

在Abp中的排序依赖ListExtensions类对List的扩展方法实现的.

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