NancyFx 2.0的开源框架的使用-CustomModule(自定义模块)

        //路由的方法
        public string Method { get; set; }
        //路由的路径
        public string Path { get; set; }
        public NancyRouteAttribute(string method,string path)
        {
            this.Method = method;
            this.Path = path;
        }

        //使用的自定义 INancyModule 实现
        //方法的属性(eugh!) 来定义路由。
        //没有人在他们正确的头脑将编写一个网络框架
        //使用属性进行路由的;
        public AfterPipeline After { get; set; }
        public BeforePipeline Before { get; set; }
        public ErrorPipeline OnError { get; set; }
        public NancyContext Context { get; set; }
        public IResponseFormatter Response { get; set; }
        public IModelBinderLocator ModelBinderLocator { get; set; }
        public ModelValidationResult ModelValidationoResult { get; set; }
        public IModelValidatorLocator ValidatorLocator { get; set; }
        public Request Request { get; set; }
        public IViewFactory ViewFactory { get; set; }
        public string ModulePath { get; set; }
        public ViewRenderer View { get { return new ViewRenderer(this); } }
        public Negotiator Negotiate { get { return new Negotiator(this.Context); } }
        public UglifiedNancyModule():this(string.Empty)
        {

        }
        public IEnumerable<Route> Routes
        {
            get { return this.GetRoutes(); }
        }
        public dynamic Text { get; set; }
        private UglifiedNancyModule(string modulePath)
        {
            this.After = new AfterPipeline();
            this.Before = new BeforePipeline();
            this.OnError = new ErrorPipeline();
            this.ModulePath = modulePath;
        }
        //在类上运行所有方法
        //为我们的属性。如果我们是为了一个真实的
        //我们将检查参数和返回类型等
        private IEnumerable<Route> GetRoutes()
        {
            var routes = new List<Route>();
            var type = this.GetType();
            var methods = type.GetMethods(BindingFlags.Instance|BindingFlags.Public);
            foreach (var method in methods)
            {
                var attribute = method.GetCustomAttributes(typeof(NancyRouteAttribute),false).FirstOrDefault() as NancyRouteAttribute;
                if (attribute==null)
                {
                    continue;
                }
                var routeDelegate = WrapFunc((Func<dynamic,dynamic>)Delegate.CreateDelegate(typeof(Func<dynamic,dynamic>),this,method.Name));
                var filter = this.GetFilter(method.Name);
                var fullPath = string.Concat(this.ModulePath,attribute.Path);
                routes.Add(new Route<object> (attribute.Method.ToUpper(),fullPath,filter,routeDelegate));
            }
            return routes.AsReadOnly();
        }

        //在返回任务的委托中包装同步委托
        private Func<NancyContext, bool> GetFilter(string routeMethodName)
        {
            var type = this.GetType();
            var method = type.GetMethod(routeMethodName+"Filter",BindingFlags.Public|BindingFlags.Instance);
            if (method==null)
            {
                return null;
            }
            return (Func<NancyContext,bool>)Delegate.CreateDelegate(typeof(Func<NancyContext,bool>,this,method.Name));
        }
        private static Func<dynamic,CancellationToken,Task<dynamic>> WrapFunc(Func<object,object> syncFunc)
        {
            return(p,ct) =>
             {
                 var tcs = new TaskCompletionSource<dynamic>();
                 try
                 {
                     var result = syncFunc.Invoke(p);
                     tcs.SetResult(result);
                 }
                 catch (Exception e)
                 {
                     tcs.SetException(e);
                     //throw;
                 }
                 return tcs.Task;
             };
        }

        [NancyRoute("GET", "/")]
        public dynamic Root(dynamic parameters)
        {
            return View["Index", new { Name = "Jimbo!" }];
        }

        public bool FilteredFilter(NancyContext context)
        {
            return false;
        }

        [NancyRoute("GET", "/filtered")]
        public dynamic Filtered(dynamic parameters)
        {
            return "筛选";
        }