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  • dotnet core高吞吐Http api服务组件FastHttpApi

    简介

    是dotNet core下基于Beetlex实现的一个高度精简化和高吞吐的HTTP API服务开源组件,它并没有完全实现HTTP SERVER的所有功能,而是只实现了在APP和WEB中提供数据服务最常用两个指令GET/SET,满足在应用实现JSON,PROTOBUF和MSGPACK等基于HTTP的数据交互功能,虽然是一个精简版本但针对SSL这方面的安全性还是支持。有牺牲就必然有收获,FastHttpApi作出这么大的精简必然在性能上有所收获取,经测试FastHttpApi在GET/POST这些数据交互的场景下性能和吞吐能力是Asp.net core集成的Kestrel的要优胜许多。

    https://github.com/IKende/FastHttpApi

    使用便利性

    FastHttpApi虽然在HTTP方面作了大量的精简,但并没有为此增加了它使用的复杂度。FastHttpApi具备asp.net core webapi的便利性;应用人员只需要制定和webapi一样的方法即可,在使用过程中和写普通逻辑方法没有多大的区别。

    定义一个控制器

    控制器用来定义具体相应URL处理的方法,只需要在类上定义Controller属性即可把类中的Public方法提供给Http访问;方法参数来源于QueryString,当参数标记为BodyParameter的时候参数来源于Http Body.

       [Controller]
        public class ControllerTest
        {
            //  /hello?name=
            public string Hello(string name)
            {
                return DateTime.Now + " hello " + name;
            }
            // /add?a=&b=
            public string Add(int a, int b)
            {
                return string.Format("{0}+{1}={2}", a, b, a + b);
            }
            // /post?name=
            public object Post(string name, [BodyParameter] UserInfo data)
            {
                return data;
            }
            // /listcustomer?count
            public IList<Customer> ListCustomer(int count)
            {
                return Customer.List(count);
            }
            // /listemployee?count
            public IList<Employee> ListEmployee(int count)
            {
                return Employee.List(count);
            }
            // post /AddEmployee 
            public Employee AddEmployee([BodyParameter]Employee item)
            {
                return item;
            }
        }
    Filter定义

    Filter是Controller处理方法的拦载器,通Filter可以对所有方法进行统一拦载处理,如权限日志等。

        [Controller]
        [NotFoundFilter]
        public class ControllerTest
        {
            //  /hello?name=
            [SkipFilter(typeof(NotFoundFilter))]
            [CustomFilter]
            public string Hello(string name)
            {
                return DateTime.Now + " hello " + name;
            }
            // /add?a=&b=
            public string Add(int a, int b)
            {
                return string.Format("{0}+{1}={2}", a, b, a + b);
            }
        }
        public class GlobalFilter : FilterAttribute
        {
            public override void Execute(ActionContext context)
            {
                Console.WriteLine(DateTime.Now + " globalFilter execting...");
                context.Execute();
                Console.WriteLine(DateTime.Now + " globalFilter executed");
            }
        }
    
        public class NotFoundFilter : FilterAttribute
        {
            public override void Execute(ActionContext context)
            {
                Console.WriteLine(DateTime.Now + " NotFoundFilter execting...");
                context.Response.NotFound();
                Console.WriteLine(DateTime.Now + " NotFoundFilter executed");
            }
        }
    
        public class CustomFilter : FilterAttribute
        {
            public override void Execute(ActionContext context)
            {
                Console.WriteLine(DateTime.Now + " CustomFilter execting...");
                context.Execute();
                Console.WriteLine(DateTime.Now + " CustomFilter executed");
            }
        }
    启动服务
            static void Main(string[] args)
            {
                mApiServer = new BeetleX.FastHttpApi.HttpApiServer();
                mApiServer.Register(typeof(Program).Assembly);
                mApiServer.ServerConfig.BodySerializer = new BeetleX.FastHttpApi.JsonBodySerializer();
                mApiServer.Open();
                Console.Read();
            }

    制定HTTP Body转换器

    转换器是组件最常用的自定义功能,通过它可以实现不同种类的数据格式,如json,protobuf和msgpack等。以下是一个json转换器的实现

     public class JsonBodySerializer : IBodySerializer
        {
            public JsonBodySerializer()
            {
                ContentType = "application/json";
            }
            public string ContentType { get; set; }
            public object GetInnerError(Exception e, HttpResponse response, bool outputStackTrace)
            {
                return new ErrorResult { url = response.Request.Url, code = 500, error = e.Message, stackTrace = outputStackTrace? e.StackTrace:null };
            }
            public object GetNotSupport(HttpResponse response)
            {
                return new ErrorResult { url = response.Request.Url, code = 403, error = response.Request.Method + " method type not support" };
            }
            public object GetNotFoundData(HttpResponse response)
            {
                return new ErrorResult { url = response.Request.Url, code = 404 };
            }
            public class ErrorResult
            {
                public string url { get; set; }
                public int code { get; set; }
                public string error { get; set; }
                public string stackTrace { get; set; }
            }
            public virtual int Serialize(PipeStream stream, object data)
            {
                int length = stream.CacheLength;
                string value = Newtonsoft.Json.JsonConvert.SerializeObject(data);
                stream.Write(value);
                return stream.CacheLength - length;
            }
            public virtual bool TryDeserialize(PipeStream stream, int length, Type type, out object data)
            {
                data = null;
                if (stream.Length >= length)
                {
                    string value = stream.ReadString(length);
                    if (type != null)
                    {
                        data = Newtonsoft.Json.JsonConvert.DeserializeObject(value,type);
                    }
                    else
                    {
                        data = Newtonsoft.Json.JsonConvert.DeserializeObject(value);
                    }
                    return true;
                }
                return false;
            }
        }

    性能对比测试

    由于dotnet core下面没有其他简化的http api组件,只能拿Kestrel asp.net core来作对比,虽然对asp.net core不公平,但这样的对比测也只是为了体现简化后的性能回报;测试服务器是阿里云的4核虚拟机,8G内存,测试工具是AB,测试功能主要是针对GET/POST的json数据处理。由于Kestrel asp.net core默认不支持AB的Keep-Alive选项,所以测试结果就并没有针对asp.net core的Keep-Alive测试

    Kestrel asp.net core代码
            // GET api/values/5
            [HttpGet("{id}")]
            public ActionResult Get(int id)
            {
                return new JsonResult(Employee.List(id));
            }
            // POST api/values
            [HttpPost]
            public ActionResult Post([FromBody] Employee value)
            {
                return new JsonResult(value);
            }
    FastHttpApi 代码
            // /listemployee?count
            public IList<Employee> ListEmployee(int count)
            {
                return Employee.List(count);
            }
            // post /AddEmployee 
            public Employee AddEmployee([BodyParameter]Employee item)
            {
                return item;
            }
    Kestrel asp.net core GET测试结果

    FastHttpApi GET测试结果

    FastHttpApi GET测试结果开启Keep-Alive

    Kestrel asp.net core POST测试结果

    FastHttpApi POST测试结果

    FastHttpApi POST测试结果开启Keep-Alive

    针对Kestrel的对比测试

    对比一下两者在accept connection上的性能差异,开启了两个AB实例同时进行压测,结果是FastHttpApi在处理并发数快高于Kestrel快一倍的情况,CPU使用率只有Kestrel的一半。

    Kestrel代码
            public void Configure(IApplicationBuilder app, IHostingEnvironment env)
            {
                app.Run(context =>
                {
                    byte[] data = System.Text.Encoding.UTF8.GetBytes(DateTime.Now.ToString());
                    return context.Response.Body.WriteAsync(data, 0, data.Length);
                });
            }
    FastHttpApi代码
            //  /hello?name=
            public string Hello(string name)
            {
                return DateTime.Now + " hello " + name;
            }
    Kestrel测试结果

    FastHttpApi测试结果

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  • 原文地址:https://www.cnblogs.com/smark/p/9660929.html
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