mirror of
https://gitee.com/johng/gf.git
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613 lines
19 KiB
Go
613 lines
19 KiB
Go
// Copyright 2017 gf Author(https://github.com/gogf/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://github.com/gogf/gf.
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package ghttp
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import (
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"bytes"
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"errors"
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"fmt"
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"github.com/gogf/gf/debug/gdebug"
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"net/http"
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"os"
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"reflect"
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"runtime"
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"strings"
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"time"
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"github.com/gogf/gf/os/gsession"
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"github.com/gogf/gf/container/garray"
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"github.com/gogf/gf/container/gmap"
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"github.com/gogf/gf/container/gtype"
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"github.com/gogf/gf/os/gcache"
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"github.com/gogf/gf/os/genv"
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"github.com/gogf/gf/os/gfile"
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"github.com/gogf/gf/os/glog"
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"github.com/gogf/gf/os/gproc"
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"github.com/gogf/gf/os/gtimer"
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"github.com/gogf/gf/text/gregex"
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"github.com/gogf/gf/util/gconv"
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"github.com/gorilla/websocket"
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"github.com/olekukonko/tablewriter"
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)
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type (
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// Server wraps the http.Server and provides more feature.
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Server struct {
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name string // Unique name for instance management.
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config ServerConfig // Configuration.
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plugins []Plugin // Plugin array.
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servers []*gracefulServer // Underlying http.Server array.
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serverCount *gtype.Int // Underlying http.Server count.
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closeChan chan struct{} // Used for underlying server closing event notification.
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serveTree map[string]interface{} // The route map tree.
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serveCache *gcache.Cache // Server cache for internal usage.
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routesMap map[string][]registeredRouteItem // Route map mainly for route dumps and repeated route checks.
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statusHandlerMap map[string]HandlerFunc // Custom status handler map.
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sessionManager *gsession.Manager // Session manager.
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}
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// Router object.
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Router struct {
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Uri string // URI.
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Method string // HTTP method
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Domain string // Bound domain.
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RegRule string // Parsed regular expression for route matching.
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RegNames []string // Parsed router parameter names.
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Priority int // Just for reference.
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}
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// Router item just for route dumps.
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RouterItem struct {
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Server string // Server name.
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Address string // Listening address.
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Domain string // Bound domain.
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Type int // Router type.
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Middleware string // Bound middleware.
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Method string // Handler method name.
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Route string // Route URI.
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Priority int // Just for reference.
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IsServiceHandler bool // Is service handler.
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handler *handlerItem // The handler.
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}
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// handlerItem is the registered handler for route handling,
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// including middleware and hook functions.
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handlerItem struct {
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itemId int // Unique ID mark.
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itemName string // Handler name, which is automatically retrieved from runtime stack when registered.
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itemType int // Handler type: object/handler/controller/middleware/hook.
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itemFunc HandlerFunc // Handler address.
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initFunc HandlerFunc // Initialization function when request enters the object(only available for object register type).
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shutFunc HandlerFunc // Shutdown function when request leaves out the object(only available for object register type).
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middleware []HandlerFunc // Bound middleware array.
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ctrlInfo *handlerController // Controller information for reflect usage.
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hookName string // Hook type name.
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router *Router // Router object.
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}
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// handlerParsedItem is the item parsed from URL.Path.
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handlerParsedItem struct {
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handler *handlerItem // Handler information.
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values map[string]string // Router values parsed from URL.Path.
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}
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// handlerController is the controller information used for reflect.
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handlerController struct {
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name string // Handler method name.
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reflect reflect.Type // Reflect type of the controller.
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}
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// registeredRouteItem stores the information of the router and is used for route map.
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registeredRouteItem struct {
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file string // Source file path and its line number.
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handler *handlerItem // Handler object.
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}
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// Request handler function.
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HandlerFunc = func(r *Request)
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// Listening file descriptor mapping.
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// The key is either "http" or "https" and the value is its FD.
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listenerFdMap = map[string]string
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)
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const (
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SERVER_STATUS_STOPPED = 0
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SERVER_STATUS_RUNNING = 1
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HOOK_BEFORE_SERVE = "HOOK_BEFORE_SERVE"
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HOOK_AFTER_SERVE = "HOOK_AFTER_SERVE"
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HOOK_BEFORE_OUTPUT = "HOOK_BEFORE_OUTPUT"
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HOOK_AFTER_OUTPUT = "HOOK_AFTER_OUTPUT"
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HTTP_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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gHANDLER_TYPE_HANDLER = 1
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gHANDLER_TYPE_OBJECT = 2
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gHANDLER_TYPE_CONTROLLER = 3
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gHANDLER_TYPE_MIDDLEWARE = 4
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gHANDLER_TYPE_HOOK = 5
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gEXCEPTION_EXIT = "exit"
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gEXCEPTION_EXIT_ALL = "exit_all"
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gEXCEPTION_EXIT_HOOK = "exit_hook"
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gROUTE_CACHE_DURATION = time.Hour
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)
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var (
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// methodsMap stores all supported HTTP method,
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// it is used for quick HTTP method searching using map.
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methodsMap = make(map[string]struct{})
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// serverMapping stores more than one server instances.
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// The key is the name of the server, and the value is its instance.
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serverMapping = gmap.NewStrAnyMap(true)
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// serverRunning marks the running server count.
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// If there no successful server running or all servers shutdown, this value is 0.
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serverRunning = gtype.NewInt()
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// wsUpgrader is the default up-grader configuration for websocket.
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wsUpgrader = websocket.Upgrader{
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// It does not check the origin in default, the application can do it itself.
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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}
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// allDoneChan is the event for all server have done its serving and exit.
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// It is used for process blocking purpose.
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allDoneChan = make(chan struct{}, 1000)
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// serverProcessInited is used for lazy initialization for server.
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// The process can only be initialized once.
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serverProcessInited = gtype.NewBool()
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// gracefulEnabled is used for graceful restarting feature, which is false in default.
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gracefulEnabled = false
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)
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func init() {
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// Initialize the methods map.
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for _, v := range strings.Split(HTTP_METHODS, ",") {
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methodsMap[v] = struct{}{}
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}
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}
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// 主要用于开发者在HTTP处理中自定义异常捕获时，判断捕获的异常是否Server抛出的自定义退出异常
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func IsExitError(err interface{}) bool {
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errStr := gconv.String(err)
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if strings.EqualFold(errStr, gEXCEPTION_EXIT) ||
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strings.EqualFold(errStr, gEXCEPTION_EXIT_ALL) ||
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strings.EqualFold(errStr, gEXCEPTION_EXIT_HOOK) {
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return true
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}
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return false
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}
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// 是否开启平滑重启特性
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func SetGraceful(enabled bool) {
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gracefulEnabled = enabled
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}
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// Web Server进程初始化.
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// 注意该方法不能放置于包初始化方法init中，不使用ghttp.Server的功能便不能初始化对应的协程goroutine逻辑.
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func serverProcessInit() {
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if !serverProcessInited.Cas(false, true) {
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return
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}
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// 如果是完整重启，那么需要等待主进程销毁后，才开始执行监听，防止端口冲突
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if genv.Get(gADMIN_ACTION_RESTART_ENVKEY) != "" {
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if p, e := os.FindProcess(gproc.PPid()); e == nil {
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p.Kill()
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p.Wait()
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} else {
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glog.Error(e)
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}
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}
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// 信号量管理操作监听
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go handleProcessSignal()
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// 异步监听进程间消息
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if gracefulEnabled {
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go handleProcessMessage()
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}
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// 是否处于开发环境，这里调用该方法初始化main包路径值，
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// 防止异步服务goroutine获取main包路径失败，
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// 该方法只有在main协程中才会执行。
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gfile.MainPkgPath()
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}
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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(name ...interface{}) *Server {
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serverName := gDEFAULT_SERVER
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if len(name) > 0 && name[0] != "" {
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serverName = gconv.String(name[0])
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}
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if s := serverMapping.Get(serverName); s != nil {
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return s.(*Server)
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}
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c := defaultServerConfig
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s := &Server{
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name: serverName,
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plugins: make([]Plugin, 0),
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servers: make([]*gracefulServer, 0),
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closeChan: make(chan struct{}, 10000),
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serverCount: gtype.NewInt(),
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statusHandlerMap: make(map[string]HandlerFunc),
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serveTree: make(map[string]interface{}),
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serveCache: gcache.New(),
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routesMap: make(map[string][]registeredRouteItem),
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}
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// 初始化时使用默认配置
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if err := s.SetConfig(c); err != nil {
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panic(err)
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}
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// 记录到全局ServerMap中
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serverMapping.Set(serverName, s)
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return s
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}
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// 作为守护协程异步执行(当同一进程中存在多个Web Server时，需要采用这种方式执行),
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// 需要结合Wait方式一起使用.
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func (s *Server) Start() error {
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// Register group routes.
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s.handlePreBindItems()
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// Server process initialization, which can only be initialized once.
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serverProcessInit()
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// Server can only be run once.
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if s.Status() == SERVER_STATUS_RUNNING {
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return errors.New("[ghttp] server is already running")
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}
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// If there's no route registered and no static service enabled,
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// it then returns an error of invalid usage of server.
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if len(s.routesMap) == 0 && !s.config.FileServerEnabled {
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return errors.New(`[ghttp] there's no route set or static feature enabled, did you forget import the router?`)
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}
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// Logging path setting check.
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if s.config.LogPath != "" {
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if err := s.config.Logger.SetPath(s.config.LogPath); err != nil {
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return errors.New(fmt.Sprintf("[ghttp] set log path '%s' error: %v", s.config.LogPath, err))
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}
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}
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// Default session storage.
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if s.config.SessionStorage == nil {
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path := ""
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if s.config.SessionPath != "" {
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path = gfile.Join(s.config.SessionPath, s.name)
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if !gfile.Exists(path) {
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if err := gfile.Mkdir(path); err != nil {
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return errors.New(fmt.Sprintf("[ghttp] mkdir failed for '%s': %v", path, err))
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}
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}
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}
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s.config.SessionStorage = gsession.NewStorageFile(path)
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}
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// Initialize session manager when start running.
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s.sessionManager = gsession.New(
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s.config.SessionMaxAge,
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s.config.SessionStorage,
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)
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// PProf feature.
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if s.config.PProfEnabled {
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s.EnablePProf(s.config.PProfPattern)
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}
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// Default HTTP handler.
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if s.config.Handler == nil {
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s.config.Handler = http.HandlerFunc(s.defaultHandler)
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}
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// Install external plugins.
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for _, p := range s.plugins {
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if err := p.Install(s); err != nil {
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s.Logger().Fatal(err)
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}
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}
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// Check the group routes again.
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s.handlePreBindItems()
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// Start the HTTP server.
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reloaded := false
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fdMapStr := genv.Get(gADMIN_ACTION_RELOAD_ENVKEY)
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if len(fdMapStr) > 0 {
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sfm := bufferToServerFdMap([]byte(fdMapStr))
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if v, ok := sfm[s.name]; ok {
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s.startServer(v)
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reloaded = true
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}
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}
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if !reloaded {
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s.startServer(nil)
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}
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// If this is a child process, it then notifies its parent exit.
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if gproc.IsChild() {
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gtimer.SetTimeout(2*time.Second, func() {
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if err := gproc.Send(gproc.PPid(), []byte("exit"), gADMIN_GPROC_COMM_GROUP); err != nil {
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//glog.Error("[ghttp] server error in process communication:", err)
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}
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})
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}
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s.dumpRouterMap()
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return nil
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}
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// DumpRouterMap dumps the router map to the log.
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func (s *Server) dumpRouterMap() {
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if s.config.DumpRouterMap && len(s.routesMap) > 0 {
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buffer := bytes.NewBuffer(nil)
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table := tablewriter.NewWriter(buffer)
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table.SetHeader([]string{"SERVER", "DOMAIN", "ADDRESS", "METHOD", "ROUTE", "HANDLER", "MIDDLEWARE"})
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table.SetRowLine(true)
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table.SetBorder(false)
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table.SetCenterSeparator("|")
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for _, item := range s.GetRouterArray() {
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data := make([]string, 7)
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data[0] = item.Server
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data[1] = item.Domain
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data[2] = item.Address
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data[3] = item.Method
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data[4] = item.Route
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data[5] = item.handler.itemName
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data[6] = item.Middleware
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table.Append(data)
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}
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table.Render()
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s.config.Logger.Header(false).Printf("\n%s", buffer.String())
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}
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}
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// GetRouterArray retrieves and returns the router array.
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// The key of the returned map is the domain of the server.
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func (s *Server) GetRouterArray() []RouterItem {
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m := make(map[string]*garray.SortedArray)
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address := s.config.Address
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if s.config.HTTPSAddr != "" {
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if len(address) > 0 {
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address += ","
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}
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address += "tls" + s.config.HTTPSAddr
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}
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for k, registeredItems := range s.routesMap {
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array, _ := gregex.MatchString(`(.*?)%([A-Z]+):(.+)@(.+)`, k)
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for index, registeredItem := range registeredItems {
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item := RouterItem{
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Server: s.name,
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Address: address,
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Domain: array[4],
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Type: registeredItem.handler.itemType,
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Middleware: array[1],
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Method: array[2],
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Route: array[3],
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Priority: len(registeredItems) - index - 1,
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handler: registeredItem.handler,
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}
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switch item.handler.itemType {
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case gHANDLER_TYPE_CONTROLLER, gHANDLER_TYPE_OBJECT, gHANDLER_TYPE_HANDLER:
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item.IsServiceHandler = true
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case gHANDLER_TYPE_MIDDLEWARE:
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item.Middleware = "GLOBAL MIDDLEWARE"
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}
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if len(item.handler.middleware) > 0 {
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for _, v := range item.handler.middleware {
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if item.Middleware != "" {
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item.Middleware += ","
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}
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item.Middleware += gdebug.FuncName(v)
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}
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}
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// If the domain does not exist in the dump map, it create the map.
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// The value of the map is a custom sorted array.
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if _, ok := m[item.Domain]; !ok {
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// Sort in ASC order.
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m[item.Domain] = garray.NewSortedArray(func(v1, v2 interface{}) int {
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item1 := v1.(RouterItem)
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item2 := v2.(RouterItem)
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r := 0
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if r = strings.Compare(item1.Domain, item2.Domain); r == 0 {
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if r = strings.Compare(item1.Route, item2.Route); r == 0 {
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if r = strings.Compare(item1.Method, item2.Method); r == 0 {
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if item1.handler.itemType == gHANDLER_TYPE_MIDDLEWARE && item2.handler.itemType != gHANDLER_TYPE_MIDDLEWARE {
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return -1
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} else if item1.handler.itemType == gHANDLER_TYPE_MIDDLEWARE && item2.handler.itemType == gHANDLER_TYPE_MIDDLEWARE {
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return 1
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} else if r = strings.Compare(item1.Middleware, item2.Middleware); r == 0 {
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r = item2.Priority - item1.Priority
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}
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}
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}
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}
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return r
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})
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}
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m[item.Domain].Add(item)
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}
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}
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routerArray := make([]RouterItem, 0, 128)
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for _, array := range m {
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for _, v := range array.Slice() {
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routerArray = append(routerArray, v.(RouterItem))
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}
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}
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return routerArray
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}
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// Run starts server listening in blocking way.
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func (s *Server) Run() {
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if err := s.Start(); err != nil {
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s.Logger().Fatal(err)
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}
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// Blocking using channel.
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<-s.closeChan
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s.Logger().Printf("[ghttp] %d: all servers shutdown", gproc.Pid())
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}
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// Wait blocks to wait for all servers done.
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// It's commonly used in multiple servers situation.
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func Wait() {
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<-allDoneChan
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glog.Printf("[ghttp] %d: all servers shutdown", gproc.Pid())
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}
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// 开启底层Web Server执行
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func (s *Server) startServer(fdMap listenerFdMap) {
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var httpsEnabled bool
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// 判断是否启用HTTPS
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if s.config.TLSConfig != nil || (s.config.HTTPSCertPath != "" && s.config.HTTPSKeyPath != "") {
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// ================
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// HTTPS
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// ================
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if len(s.config.HTTPSAddr) == 0 {
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if len(s.config.Address) > 0 {
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s.config.HTTPSAddr = s.config.Address
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s.config.Address = ""
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} else {
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s.config.HTTPSAddr = gDEFAULT_HTTPS_ADDR
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}
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}
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httpsEnabled = len(s.config.HTTPSAddr) > 0
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var array []string
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if v, ok := fdMap["https"]; ok && len(v) > 0 {
|
||
array = strings.Split(v, ",")
|
||
} else {
|
||
array = strings.Split(s.config.HTTPSAddr, ",")
|
||
}
|
||
for _, v := range array {
|
||
if len(v) == 0 {
|
||
continue
|
||
}
|
||
fd := 0
|
||
itemFunc := v
|
||
array := strings.Split(v, "#")
|
||
if len(array) > 1 {
|
||
itemFunc = array[0]
|
||
// windows系统不支持文件描述符传递socket通信平滑交接，因此只能完整重启
|
||
if runtime.GOOS != "windows" {
|
||
fd = gconv.Int(array[1])
|
||
}
|
||
}
|
||
if fd > 0 {
|
||
s.servers = append(s.servers, s.newGracefulServer(itemFunc, fd))
|
||
} else {
|
||
s.servers = append(s.servers, s.newGracefulServer(itemFunc))
|
||
}
|
||
s.servers[len(s.servers)-1].isHttps = true
|
||
}
|
||
}
|
||
// ================
|
||
// HTTP
|
||
// ================
|
||
// 当HTTPS服务未启用时，默认HTTP地址才会生效
|
||
if !httpsEnabled && len(s.config.Address) == 0 {
|
||
s.config.Address = gDEFAULT_HTTP_ADDR
|
||
}
|
||
var array []string
|
||
if v, ok := fdMap["http"]; ok && len(v) > 0 {
|
||
array = strings.Split(v, ",")
|
||
} else {
|
||
array = strings.Split(s.config.Address, ",")
|
||
}
|
||
for _, v := range array {
|
||
if len(v) == 0 {
|
||
continue
|
||
}
|
||
fd := 0
|
||
itemFunc := v
|
||
array := strings.Split(v, "#")
|
||
if len(array) > 1 {
|
||
itemFunc = array[0]
|
||
// windows系统不支持文件描述符传递socket通信平滑交接，因此只能完整重启
|
||
if runtime.GOOS != "windows" {
|
||
fd = gconv.Int(array[1])
|
||
}
|
||
}
|
||
if fd > 0 {
|
||
s.servers = append(s.servers, s.newGracefulServer(itemFunc, fd))
|
||
} else {
|
||
s.servers = append(s.servers, s.newGracefulServer(itemFunc))
|
||
}
|
||
}
|
||
// 开始执行异步监听
|
||
serverRunning.Add(1)
|
||
for _, v := range s.servers {
|
||
go func(server *gracefulServer) {
|
||
s.serverCount.Add(1)
|
||
err := (error)(nil)
|
||
if server.isHttps {
|
||
err = server.ListenAndServeTLS(s.config.HTTPSCertPath, s.config.HTTPSKeyPath, s.config.TLSConfig)
|
||
} else {
|
||
err = server.ListenAndServe()
|
||
}
|
||
// 如果非关闭错误，那么提示报错，否则认为是正常的服务关闭操作
|
||
if err != nil && !strings.EqualFold(http.ErrServerClosed.Error(), err.Error()) {
|
||
s.Logger().Fatal(err)
|
||
}
|
||
// 如果所有异步的http.Server都已经停止，那么WebServer就可以退出了
|
||
if s.serverCount.Add(-1) < 1 {
|
||
s.closeChan <- struct{}{}
|
||
// 如果所有WebServer都退出，那么退出Wait等待
|
||
if serverRunning.Add(-1) < 1 {
|
||
serverMapping.Remove(s.name)
|
||
allDoneChan <- struct{}{}
|
||
}
|
||
}
|
||
}(v)
|
||
}
|
||
}
|
||
|
||
// 获取当前服务器的状态
|
||
func (s *Server) Status() int {
|
||
// 当全局运行的Web Server数量为0时表示所有Server都是停止状态
|
||
if serverRunning.Val() == 0 {
|
||
return SERVER_STATUS_STOPPED
|
||
}
|
||
// 只要有一个Server处于运行状态，那么都表示运行状态
|
||
for _, v := range s.servers {
|
||
if v.status == SERVER_STATUS_RUNNING {
|
||
return SERVER_STATUS_RUNNING
|
||
}
|
||
}
|
||
return SERVER_STATUS_STOPPED
|
||
}
|
||
|
||
// 获取当前监听的文件描述符信息，构造成map返回
|
||
func (s *Server) getListenerFdMap() map[string]string {
|
||
m := map[string]string{
|
||
"https": "",
|
||
"http": "",
|
||
}
|
||
// s.servers是从HTTPS到HTTP优先级遍历，解析的时候也应当按照这个顺序读取fd
|
||
for _, v := range s.servers {
|
||
str := v.itemFunc + "#" + gconv.String(v.Fd()) + ","
|
||
if v.isHttps {
|
||
m["https"] += str
|
||
} else {
|
||
m["http"] += str
|
||
}
|
||
}
|
||
// 去掉末尾的","号
|
||
if len(m["https"]) > 0 {
|
||
m["https"] = m["https"][0 : len(m["https"])-1]
|
||
}
|
||
if len(m["http"]) > 0 {
|
||
m["http"] = m["http"][0 : len(m["http"])-1]
|
||
}
|
||
|
||
return m
|
||
}
|