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166 lines
6.2 KiB
Go
166 lines
6.2 KiB
Go
// Copyright 2017 gf Author(https://gitee.com/johng/gf). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://gitee.com/johng/gf.
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package ghttp
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import (
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"sync"
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"errors"
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"strings"
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"reflect"
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"net/http"
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"gitee.com/johng/gf/g/os/glog"
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"gitee.com/johng/gf/g/os/gcache"
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"gitee.com/johng/gf/g/container/gmap"
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"gitee.com/johng/gf/g/container/gtype"
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"gitee.com/johng/gf/g/container/gqueue"
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)
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const (
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gHTTP_METHODS = "GET,PUT,POST,DELETE,PATCH,HEAD,CONNECT,OPTIONS,TRACE"
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gDEFAULT_SERVER = "default"
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gDEFAULT_DOMAIN = "default"
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gDEFAULT_METHOD = "ALL"
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gDEFAULT_COOKIE_PATH = "/" // 默认path
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gDEFAULT_COOKIE_MAX_AGE = 86400*365 // 默认cookie有效期(一年)
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gDEFAULT_SESSION_MAX_AGE = 600 // 默认session有效期(600秒)
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gDEFAULT_SESSION_ID_NAME = "gfsessionid" // 默认存放Cookie中的SessionId名称
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)
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// http server结构体
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type Server struct {
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hmmu sync.RWMutex // handler互斥锁
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hhmu sync.RWMutex // hooks互斥锁
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hmcmu sync.RWMutex // handlerCache互斥锁
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hhcmu sync.RWMutex // hooksCache互斥锁
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name string // 服务名称,方便识别
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server http.Server // 底层http server对象
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config ServerConfig // 配置对象
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status int8 // 当前服务器状态(0:未启动,1:运行中)
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methodsMap map[string]bool // 所有支持的HTTP Method(初始化时自动填充)
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handlerMap HandlerMap // 所有注册的回调函数(静态匹配)
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handlerTree map[string]interface{} // 所有注册的回调函数(动态匹配,树型+链表优先级匹配)
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hooksTree map[string]interface{} // 所有注册的事件回调函数(动态匹配,树型+链表优先级匹配)
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handlerCache *gcache.Cache // 服务注册路由内存缓存
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hooksCache *gcache.Cache // 回调事件注册路由内存缓存
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servedCount *gtype.Int // 已经服务的请求数(4-8字节,不考虑溢出情况)
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cookieMaxAge *gtype.Int // Cookie有效期
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sessionMaxAge *gtype.Int // Session有效期
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sessionIdName *gtype.String // SessionId名称
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cookies *gmap.IntInterfaceMap // 当前服务器正在服务(请求正在执行)的Cookie(每个请求一个Cookie对象)
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sessions *gcache.Cache // Session内存缓存
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closeQueue *gqueue.Queue // 请求结束的关闭队列(存放的是需要异步关闭处理的*Request对象)
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}
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// 域名、URI与回调函数的绑定记录表
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type HandlerMap map[string]*HandlerItem
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// http回调函数注册信息
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type HandlerItem struct {
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ctype reflect.Type // 控制器类型
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fname string // 回调方法名称
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faddr HandlerFunc // 准确的执行方法内存地址(与以上两个参数二选一)
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uri string // 注册时的pattern - uri
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method string // 注册时的pattern - method
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domain string // 注册时的pattern - domain
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priority int // 优先级,用于链表排序,值越大优先级越高
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}
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// http注册函数
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type HandlerFunc func(*Request)
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// Server表,用以存储和检索名称与Server对象之间的关联关系
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var serverMapping = gmap.NewStringInterfaceMap()
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// 获取/创建一个默认配置的HTTP Server(默认监听端口是80)
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// 单例模式,请保证name的唯一性
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func GetServer(names...string) (*Server) {
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name := gDEFAULT_SERVER
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if len(names) > 0 {
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name = names[0]
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}
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if s := serverMapping.Get(name); s != nil {
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return s.(*Server)
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}
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s := &Server {
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name : name,
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methodsMap : make(map[string]bool),
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handlerMap : make(HandlerMap),
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handlerTree : make(map[string]interface{}),
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hooksTree : make(map[string]interface{}),
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handlerCache : gcache.New(),
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hooksCache : gcache.New(),
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cookies : gmap.NewIntInterfaceMap(),
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sessions : gcache.New(),
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cookieMaxAge : gtype.NewInt(gDEFAULT_COOKIE_MAX_AGE),
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sessionMaxAge : gtype.NewInt(gDEFAULT_SESSION_MAX_AGE),
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sessionIdName : gtype.NewString(gDEFAULT_SESSION_ID_NAME),
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servedCount : gtype.NewInt(),
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closeQueue : gqueue.New(),
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}
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s.hooksCache.SetCap(10000)
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s.handlerCache.SetCap(10000)
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for _, v := range strings.Split(gHTTP_METHODS, ",") {
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s.methodsMap[v] = true
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}
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s.SetConfig(defaultServerConfig)
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serverMapping.Set(name, s)
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return s
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}
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// 阻塞执行监听
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func (s *Server) Run() error {
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if s.status == 1 {
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return errors.New("server is already running")
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}
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// 底层http server配置
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if s.config.Handler == nil {
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s.config.Handler = http.HandlerFunc(s.defaultHttpHandle)
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}
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// 底层http server初始化
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s.server = http.Server {
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Addr : s.config.Addr,
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Handler : s.config.Handler,
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ReadTimeout : s.config.ReadTimeout,
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WriteTimeout : s.config.WriteTimeout,
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IdleTimeout : s.config.IdleTimeout,
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MaxHeaderBytes : s.config.MaxHeaderBytes,
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}
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// 开启异步处理队列处理循环
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s.startCloseQueueLoop()
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// 执行端口监听
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if err := s.server.ListenAndServe(); err != nil {
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glog.Error(err)
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return err
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}
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s.status = 1
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return nil
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}
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// 清空当前的handlerCache
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func (s *Server) clearHandlerCache() {
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// 只有在运行时才会生效
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if s.status != 1 {
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return
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}
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s.hmcmu.Lock()
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defer s.hmcmu.Unlock()
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s.handlerCache.Close()
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s.handlerCache = gcache.New()
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}
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// 清空当前的hooksCache
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func (s *Server) clearHooksCache() {
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// 只有在运行时才会生效
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if s.status != 1 {
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return
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}
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s.hhcmu.Lock()
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defer s.hhcmu.Unlock()
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s.hooksCache.Close()
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s.hooksCache = gcache.New()
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} |