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ghttp_server.go
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ghttp_server.go
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// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package ghttp
import (
"bytes"
"context"
"fmt"
"net/http"
"os"
"runtime"
"strings"
"time"
"github.com/olekukonko/tablewriter"
"github.com/gogf/gf/v2/container/garray"
"github.com/gogf/gf/v2/container/gtype"
"github.com/gogf/gf/v2/debug/gdebug"
"github.com/gogf/gf/v2/errors/gcode"
"github.com/gogf/gf/v2/errors/gerror"
"github.com/gogf/gf/v2/internal/intlog"
"github.com/gogf/gf/v2/net/ghttp/internal/swaggerui"
"github.com/gogf/gf/v2/os/gcache"
"github.com/gogf/gf/v2/os/genv"
"github.com/gogf/gf/v2/os/gfile"
"github.com/gogf/gf/v2/os/glog"
"github.com/gogf/gf/v2/os/gproc"
"github.com/gogf/gf/v2/os/gsession"
"github.com/gogf/gf/v2/os/gtimer"
"github.com/gogf/gf/v2/protocol/goai"
"github.com/gogf/gf/v2/text/gregex"
"github.com/gogf/gf/v2/text/gstr"
"github.com/gogf/gf/v2/util/gconv"
)
func init() {
// Initialize the methods map.
for _, v := range strings.Split(supportedHttpMethods, ",") {
methodsMap[v] = struct{}{}
}
}
// serverProcessInit initializes some process configurations, which can only be done once.
func serverProcessInit() {
var ctx = context.TODO()
if !serverProcessInitialized.Cas(false, true) {
return
}
// This means it is a restart server, it should kill its parent before starting its listening,
// to avoid duplicated port listening in two processes.
if !genv.Get(adminActionRestartEnvKey).IsEmpty() {
if p, err := os.FindProcess(gproc.PPid()); err == nil {
if err = p.Kill(); err != nil {
intlog.Errorf(ctx, `%+v`, err)
}
if _, err = p.Wait(); err != nil {
intlog.Errorf(ctx, `%+v`, err)
}
} else {
glog.Error(ctx, err)
}
}
// Signal handler.
go handleProcessSignal()
// Process message handler.
// It's enabled only graceful feature is enabled.
if gracefulEnabled {
intlog.Printf(ctx, "%d: graceful reload feature is enabled", gproc.Pid())
go handleProcessMessage()
} else {
intlog.Printf(ctx, "%d: graceful reload feature is disabled", gproc.Pid())
}
// It's an ugly calling for better initializing the main package path
// in source development environment. It is useful only be used in main goroutine.
// It fails retrieving the main package path in asynchronous goroutines.
gfile.MainPkgPath()
}
// GetServer creates and returns a server instance using given name and default configurations.
// Note that the parameter `name` should be unique for different servers. It returns an existing
// server instance if given `name` is already existing in the server mapping.
func GetServer(name ...interface{}) *Server {
serverName := DefaultServerName
if len(name) > 0 && name[0] != "" {
serverName = gconv.String(name[0])
}
if s := serverMapping.Get(serverName); s != nil {
return s.(*Server)
}
s := &Server{
instance: serverName,
plugins: make([]Plugin, 0),
servers: make([]*gracefulServer, 0),
closeChan: make(chan struct{}, 10000),
serverCount: gtype.NewInt(),
statusHandlerMap: make(map[string][]HandlerFunc),
serveTree: make(map[string]interface{}),
serveCache: gcache.New(),
routesMap: make(map[string][]registeredRouteItem),
openapi: goai.New(),
}
// Initialize the server using default configurations.
if err := s.SetConfig(NewConfig()); err != nil {
panic(gerror.WrapCode(gcode.CodeInvalidConfiguration, err, ""))
}
// Record the server to internal server mapping by name.
serverMapping.Set(serverName, s)
// It enables OpenTelemetry for server in default.
s.Use(internalMiddlewareServerTracing)
return s
}
// Start starts listening on configured port.
// This function does not block the process, you can use function Wait blocking the process.
func (s *Server) Start() error {
var ctx = context.TODO()
// Swagger UI.
if s.config.SwaggerPath != "" {
swaggerui.Init()
s.AddStaticPath(s.config.SwaggerPath, swaggerUIPackedPath)
s.BindHookHandler(s.config.SwaggerPath+"/*", HookBeforeServe, s.swaggerUI)
s.Logger().Debugf(
ctx,
`swagger ui is serving at address: %s%s/`,
s.getListenAddress(),
s.config.SwaggerPath,
)
}
// OpenApi specification json producing handler.
if s.config.OpenApiPath != "" {
s.BindHandler(s.config.OpenApiPath, s.openapiSpec)
s.Logger().Infof(
ctx,
`openapi specification is serving at address: %s%s`,
s.getListenAddress(),
s.config.OpenApiPath,
)
} else {
if s.config.SwaggerPath != "" {
s.Logger().Warning(
ctx,
`openapi specification is disabled but swagger ui is serving, which might make no sense`,
)
} else {
s.Logger().Info(
ctx,
`openapi specification is disabled`,
)
}
}
// Register group routes.
s.handlePreBindItems(ctx)
// Server process initialization, which can only be initialized once.
serverProcessInit()
// Server can only be run once.
if s.Status() == ServerStatusRunning {
return gerror.NewCode(gcode.CodeInvalidOperation, "server is already running")
}
// Logging path setting check.
if s.config.LogPath != "" && s.config.LogPath != s.config.Logger.GetPath() {
if err := s.config.Logger.SetPath(s.config.LogPath); err != nil {
return err
}
}
// Default session storage.
if s.config.SessionStorage == nil {
path := ""
if s.config.SessionPath != "" {
path = gfile.Join(s.config.SessionPath, s.config.Name)
if !gfile.Exists(path) {
if err := gfile.Mkdir(path); err != nil {
return gerror.Wrapf(err, `mkdir failed for "%s"`, path)
}
}
}
s.config.SessionStorage = gsession.NewStorageFile(path)
}
// Initialize session manager when start running.
s.sessionManager = gsession.New(
s.config.SessionMaxAge,
s.config.SessionStorage,
)
// PProf feature.
if s.config.PProfEnabled {
s.EnablePProf(s.config.PProfPattern)
}
// Default HTTP handler.
if s.config.Handler == nil {
s.config.Handler = s.ServeHTTP
}
// Install external plugins.
for _, p := range s.plugins {
if err := p.Install(s); err != nil {
s.Logger().Fatalf(ctx, `%+v`, err)
}
}
// Check the group routes again.
s.handlePreBindItems(ctx)
// If there's no route registered and no static service enabled,
// it then returns an error of invalid usage of server.
if len(s.routesMap) == 0 && !s.config.FileServerEnabled {
return gerror.NewCode(
gcode.CodeInvalidOperation,
`there's no route set or static feature enabled, did you forget import the router?`,
)
}
// Start the HTTP server.
reloaded := false
fdMapStr := genv.Get(adminActionReloadEnvKey).String()
if len(fdMapStr) > 0 {
sfm := bufferToServerFdMap([]byte(fdMapStr))
if v, ok := sfm[s.config.Name]; ok {
s.startServer(v)
reloaded = true
}
}
if !reloaded {
s.startServer(nil)
}
// If this is a child process, it then notifies its parent exit.
if gproc.IsChild() {
gtimer.SetTimeout(ctx, time.Duration(s.config.GracefulTimeout)*time.Second, func(ctx context.Context) {
if err := gproc.Send(gproc.PPid(), []byte("exit"), adminGProcCommGroup); err != nil {
intlog.Errorf(ctx, `server error in process communication: %+v`, err)
}
})
}
s.initOpenApi()
s.doServiceRegister()
s.dumpRouterMap()
return nil
}
func (s *Server) getListenAddress() string {
var (
array = gstr.SplitAndTrim(s.config.Address, ":")
host = `127.0.0.1`
port = 0
)
if len(array) > 1 {
host = array[0]
port = gconv.Int(array[1])
} else {
port = gconv.Int(array[0])
}
return fmt.Sprintf(`http://%s:%d`, host, port)
}
// DumpRouterMap dumps the router map to the log.
func (s *Server) dumpRouterMap() {
var (
ctx = context.TODO()
routes = s.GetRoutes()
headers = []string{"SERVER", "DOMAIN", "ADDRESS", "METHOD", "ROUTE", "HANDLER", "MIDDLEWARE"}
isJustDefaultServerAndDomain = true
)
for _, item := range routes {
if item.Server != DefaultServerName || item.Domain != DefaultDomainName {
isJustDefaultServerAndDomain = false
break
}
}
if isJustDefaultServerAndDomain {
headers = []string{"ADDRESS", "METHOD", "ROUTE", "HANDLER", "MIDDLEWARE"}
}
if s.config.DumpRouterMap && len(routes) > 0 {
buffer := bytes.NewBuffer(nil)
table := tablewriter.NewWriter(buffer)
table.SetHeader(headers)
table.SetRowLine(true)
table.SetBorder(false)
table.SetCenterSeparator("|")
for _, item := range routes {
var (
data = make([]string, 0)
handlerName = gstr.TrimRightStr(item.Handler.Name, "-fm")
middlewares = gstr.SplitAndTrim(item.Middleware, ",")
)
for k, v := range middlewares {
middlewares[k] = gstr.TrimRightStr(v, "-fm")
}
item.Middleware = gstr.Join(middlewares, "\n")
if isJustDefaultServerAndDomain {
data = append(
data,
item.Address,
item.Method,
item.Route,
handlerName,
item.Middleware,
)
} else {
data = append(
data,
item.Server,
item.Domain,
item.Address,
item.Method,
item.Route,
handlerName,
item.Middleware,
)
}
table.Append(data)
}
table.Render()
s.config.Logger.Header(false).Printf(ctx, "\n%s", buffer.String())
}
}
// GetOpenApi returns the OpenApi specification management object of current server.
func (s *Server) GetOpenApi() *goai.OpenApiV3 {
return s.openapi
}
// GetRoutes retrieves and returns the router array.
func (s *Server) GetRoutes() []RouterItem {
var (
m = make(map[string]*garray.SortedArray)
address = s.config.Address
)
if s.config.HTTPSAddr != "" {
if len(address) > 0 {
address += ","
}
address += "tls" + s.config.HTTPSAddr
}
for k, registeredItems := range s.routesMap {
array, _ := gregex.MatchString(`(.*?)%([A-Z]+):(.+)@(.+)`, k)
for index, registeredItem := range registeredItems {
item := RouterItem{
Server: s.config.Name,
Address: address,
Domain: array[4],
Type: registeredItem.Handler.Type,
Middleware: array[1],
Method: array[2],
Route: array[3],
Priority: len(registeredItems) - index - 1,
Handler: registeredItem.Handler,
}
switch item.Handler.Type {
case HandlerTypeObject, HandlerTypeHandler:
item.IsServiceHandler = true
case HandlerTypeMiddleware:
item.Middleware = "GLOBAL MIDDLEWARE"
}
if len(item.Handler.Middleware) > 0 {
for _, v := range item.Handler.Middleware {
if item.Middleware != "" {
item.Middleware += ","
}
item.Middleware += gdebug.FuncName(v)
}
}
// If the domain does not exist in the dump map, it creates the map.
// The value of the map is a custom sorted array.
if _, ok := m[item.Domain]; !ok {
// Sort in ASC order.
m[item.Domain] = garray.NewSortedArray(func(v1, v2 interface{}) int {
item1 := v1.(RouterItem)
item2 := v2.(RouterItem)
r := 0
if r = strings.Compare(item1.Domain, item2.Domain); r == 0 {
if r = strings.Compare(item1.Route, item2.Route); r == 0 {
if r = strings.Compare(item1.Method, item2.Method); r == 0 {
if item1.Handler.Type == HandlerTypeMiddleware && item2.Handler.Type != HandlerTypeMiddleware {
return -1
} else if item1.Handler.Type == HandlerTypeMiddleware && item2.Handler.Type == HandlerTypeMiddleware {
return 1
} else if r = strings.Compare(item1.Middleware, item2.Middleware); r == 0 {
r = item2.Priority - item1.Priority
}
}
}
}
return r
})
}
m[item.Domain].Add(item)
}
}
routerArray := make([]RouterItem, 0, 128)
for _, array := range m {
for _, v := range array.Slice() {
routerArray = append(routerArray, v.(RouterItem))
}
}
return routerArray
}
// Run starts server listening in blocking way.
// It's commonly used for single server situation.
func (s *Server) Run() {
var ctx = context.TODO()
if err := s.Start(); err != nil {
s.Logger().Fatalf(ctx, `%+v`, err)
}
// Blocking using channel.
<-s.closeChan
// Remove plugins.
if len(s.plugins) > 0 {
for _, p := range s.plugins {
intlog.Printf(ctx, `remove plugin: %s`, p.Name())
if err := p.Remove(); err != nil {
intlog.Errorf(ctx, "%+v", err)
}
}
}
s.doServiceDeregister()
s.Logger().Infof(ctx, "pid[%d]: all servers shutdown", gproc.Pid())
}
// Wait blocks to wait for all servers done.
// It's commonly used in multiple server situation.
func Wait() {
var ctx = context.TODO()
<-allDoneChan
// Remove plugins.
serverMapping.Iterator(func(k string, v interface{}) bool {
s := v.(*Server)
if len(s.plugins) > 0 {
for _, p := range s.plugins {
intlog.Printf(ctx, `remove plugin: %s`, p.Name())
if err := p.Remove(); err != nil {
intlog.Errorf(ctx, `%+v`, err)
}
}
}
return true
})
glog.Infof(ctx, "pid[%d]: all servers shutdown", gproc.Pid())
}
// startServer starts the underlying server listening.
func (s *Server) startServer(fdMap listenerFdMap) {
var (
ctx = context.TODO()
httpsEnabled bool
)
// HTTPS
if s.config.TLSConfig != nil || (s.config.HTTPSCertPath != "" && s.config.HTTPSKeyPath != "") {
if len(s.config.HTTPSAddr) == 0 {
if len(s.config.Address) > 0 {
s.config.HTTPSAddr = s.config.Address
s.config.Address = ""
} else {
s.config.HTTPSAddr = defaultHttpsAddr
}
}
httpsEnabled = len(s.config.HTTPSAddr) > 0
var array []string
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
}
var (
fd = 0
itemFunc = v
addrAndFd = strings.Split(v, "#")
)
if len(addrAndFd) > 1 {
itemFunc = addrAndFd[0]
// The Windows OS does not support socket file descriptor passing
// from parent process.
if runtime.GOOS != "windows" {
fd = gconv.Int(addrAndFd[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
if !httpsEnabled && len(s.config.Address) == 0 {
s.config.Address = defaultHttpAddr
}
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
}
var (
fd = 0
itemFunc = v
addrAndFd = strings.Split(v, "#")
)
if len(addrAndFd) > 1 {
itemFunc = addrAndFd[0]
// The Windows OS does not support socket file descriptor passing
// from parent process.
if runtime.GOOS != "windows" {
fd = gconv.Int(addrAndFd[1])
}
}
if fd > 0 {
s.servers = append(s.servers, s.newGracefulServer(itemFunc, fd))
} else {
s.servers = append(s.servers, s.newGracefulServer(itemFunc))
}
}
// Start listening asynchronously.
serverRunning.Add(1)
for _, v := range s.servers {
go func(server *gracefulServer) {
s.serverCount.Add(1)
var err error
if server.isHttps {
err = server.ListenAndServeTLS(s.config.HTTPSCertPath, s.config.HTTPSKeyPath, s.config.TLSConfig)
} else {
err = server.ListenAndServe()
}
// The process exits if the server is closed with none closing error.
if err != nil && !strings.EqualFold(http.ErrServerClosed.Error(), err.Error()) {
s.Logger().Fatalf(ctx, `%+v`, err)
}
// If all the underlying servers' shutdown, the process exits.
if s.serverCount.Add(-1) < 1 {
s.closeChan <- struct{}{}
if serverRunning.Add(-1) < 1 {
serverMapping.Remove(s.instance)
allDoneChan <- struct{}{}
}
}
}(v)
}
}
// Status retrieves and returns the server status.
func (s *Server) Status() int {
if serverRunning.Val() == 0 {
return ServerStatusStopped
}
// If any underlying server is running, the server status is running.
for _, v := range s.servers {
if v.status == ServerStatusRunning {
return ServerStatusRunning
}
}
return ServerStatusStopped
}
// getListenerFdMap retrieves and returns the socket file descriptors.
// The key of the returned map is "http" and "https".
func (s *Server) getListenerFdMap() map[string]string {
m := map[string]string{
"https": "",
"http": "",
}
for _, v := range s.servers {
str := v.address + "#" + gconv.String(v.Fd()) + ","
if v.isHttps {
if len(m["https"]) > 0 {
m["https"] += ","
}
m["https"] += str
} else {
if len(m["http"]) > 0 {
m["http"] += ","
}
m["http"] += str
}
}
return m
}
// GetListenedPort retrieves and returns one port which is listened by current server.
func (s *Server) GetListenedPort() int {
ports := s.GetListenedPorts()
if len(ports) > 0 {
return ports[0]
}
return 0
}
// GetListenedPorts retrieves and returns the ports which are listened by current server.
func (s *Server) GetListenedPorts() []int {
ports := make([]int, 0)
for _, server := range s.servers {
ports = append(ports, server.GetListenedPort())
}
return ports
}