forgejo/cmd/web.go
wxiaoguang 4e2f1ee58d
Refactor web package and context package (#25298)
1. The "web" package shouldn't depends on "modules/context" package,
instead, let each "web context" register themselves to the "web"
package.
2. The old Init/Free doesn't make sense, so simplify it
* The ctx in "Init(ctx)" is never used, and shouldn't be used that way
* The "Free" is never called and shouldn't be called because the SSPI
instance is shared

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-06-18 09:59:09 +02:00

288 lines
8.5 KiB
Go

// Copyright 2014 The Gogs Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cmd
import (
"context"
"fmt"
"net"
"net/http"
"os"
"path/filepath"
"strconv"
"strings"
_ "net/http/pprof" // Used for debugging if enabled and a web server is running
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/routers"
"code.gitea.io/gitea/routers/install"
"github.com/felixge/fgprof"
"github.com/urfave/cli"
)
// PIDFile could be set from build tag
var PIDFile = "/run/gitea.pid"
// CmdWeb represents the available web sub-command.
var CmdWeb = cli.Command{
Name: "web",
Usage: "Start Gitea web server",
Description: `Gitea web server is the only thing you need to run,
and it takes care of all the other things for you`,
Action: runWeb,
Flags: []cli.Flag{
cli.StringFlag{
Name: "port, p",
Value: "3000",
Usage: "Temporary port number to prevent conflict",
},
cli.StringFlag{
Name: "install-port",
Value: "3000",
Usage: "Temporary port number to run the install page on to prevent conflict",
},
cli.StringFlag{
Name: "pid, P",
Value: PIDFile,
Usage: "Custom pid file path",
},
cli.BoolFlag{
Name: "quiet, q",
Usage: "Only display Fatal logging errors until logging is set-up",
},
cli.BoolFlag{
Name: "verbose",
Usage: "Set initial logging to TRACE level until logging is properly set-up",
},
},
}
func runHTTPRedirector() {
_, _, finished := process.GetManager().AddTypedContext(graceful.GetManager().HammerContext(), "Web: HTTP Redirector", process.SystemProcessType, true)
defer finished()
source := fmt.Sprintf("%s:%s", setting.HTTPAddr, setting.PortToRedirect)
dest := strings.TrimSuffix(setting.AppURL, "/")
log.Info("Redirecting: %s to %s", source, dest)
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
target := dest + r.URL.Path
if len(r.URL.RawQuery) > 0 {
target += "?" + r.URL.RawQuery
}
http.Redirect(w, r, target, http.StatusTemporaryRedirect)
})
err := runHTTP("tcp", source, "HTTP Redirector", handler, setting.RedirectorUseProxyProtocol)
if err != nil {
log.Fatal("Failed to start port redirection: %v", err)
}
}
func createPIDFile(pidPath string) {
currentPid := os.Getpid()
if err := os.MkdirAll(filepath.Dir(pidPath), os.ModePerm); err != nil {
log.Fatal("Failed to create PID folder: %v", err)
}
file, err := os.Create(pidPath)
if err != nil {
log.Fatal("Failed to create PID file: %v", err)
}
defer file.Close()
if _, err := file.WriteString(strconv.FormatInt(int64(currentPid), 10)); err != nil {
log.Fatal("Failed to write PID information: %v", err)
}
}
func runWeb(ctx *cli.Context) error {
if ctx.Bool("verbose") {
setupConsoleLogger(log.TRACE, log.CanColorStdout, os.Stdout)
} else if ctx.Bool("quiet") {
setupConsoleLogger(log.FATAL, log.CanColorStdout, os.Stdout)
}
defer func() {
if panicked := recover(); panicked != nil {
log.Fatal("PANIC: %v\n%s", panicked, log.Stack(2))
}
}()
managerCtx, cancel := context.WithCancel(context.Background())
graceful.InitManager(managerCtx)
defer cancel()
if os.Getppid() > 1 && len(os.Getenv("LISTEN_FDS")) > 0 {
log.Info("Restarting Gitea on PID: %d from parent PID: %d", os.Getpid(), os.Getppid())
} else {
log.Info("Starting Gitea on PID: %d", os.Getpid())
}
// Set pid file setting
if ctx.IsSet("pid") {
createPIDFile(ctx.String("pid"))
}
// Perform pre-initialization
needsInstall := install.PreloadSettings(graceful.GetManager().HammerContext())
if needsInstall {
// Flag for port number in case first time run conflict
if ctx.IsSet("port") {
if err := setPort(ctx.String("port")); err != nil {
return err
}
}
if ctx.IsSet("install-port") {
if err := setPort(ctx.String("install-port")); err != nil {
return err
}
}
c := install.Routes()
err := listen(c, false)
if err != nil {
log.Critical("Unable to open listener for installer. Is Gitea already running?")
graceful.GetManager().DoGracefulShutdown()
}
select {
case <-graceful.GetManager().IsShutdown():
<-graceful.GetManager().Done()
log.Info("PID: %d Gitea Web Finished", os.Getpid())
log.GetManager().Close()
return err
default:
}
} else {
NoInstallListener()
}
if setting.EnablePprof {
go func() {
http.DefaultServeMux.Handle("/debug/fgprof", fgprof.Handler())
_, _, finished := process.GetManager().AddTypedContext(context.Background(), "Web: PProf Server", process.SystemProcessType, true)
// The pprof server is for debug purpose only, it shouldn't be exposed on public network. At the moment it's not worth to introduce a configurable option for it.
log.Info("Starting pprof server on localhost:6060")
log.Info("Stopped pprof server: %v", http.ListenAndServe("localhost:6060", nil))
finished()
}()
}
log.Info("Global init")
// Perform global initialization
setting.Init(&setting.Options{})
routers.GlobalInitInstalled(graceful.GetManager().HammerContext())
// We check that AppDataPath exists here (it should have been created during installation)
// We can't check it in `GlobalInitInstalled`, because some integration tests
// use cmd -> GlobalInitInstalled, but the AppDataPath doesn't exist during those tests.
if _, err := os.Stat(setting.AppDataPath); err != nil {
log.Fatal("Can not find APP_DATA_PATH '%s'", setting.AppDataPath)
}
// Override the provided port number within the configuration
if ctx.IsSet("port") {
if err := setPort(ctx.String("port")); err != nil {
return err
}
}
// Set up Chi routes
c := routers.NormalRoutes()
err := listen(c, true)
<-graceful.GetManager().Done()
log.Info("PID: %d Gitea Web Finished", os.Getpid())
log.GetManager().Close()
return err
}
func setPort(port string) error {
setting.AppURL = strings.Replace(setting.AppURL, setting.HTTPPort, port, 1)
setting.HTTPPort = port
switch setting.Protocol {
case setting.HTTPUnix:
case setting.FCGI:
case setting.FCGIUnix:
default:
defaultLocalURL := string(setting.Protocol) + "://"
if setting.HTTPAddr == "0.0.0.0" {
defaultLocalURL += "localhost"
} else {
defaultLocalURL += setting.HTTPAddr
}
defaultLocalURL += ":" + setting.HTTPPort + "/"
// Save LOCAL_ROOT_URL if port changed
setting.CfgProvider.Section("server").Key("LOCAL_ROOT_URL").SetValue(defaultLocalURL)
if err := setting.CfgProvider.Save(); err != nil {
return fmt.Errorf("Failed to save config file: %v", err)
}
}
return nil
}
func listen(m http.Handler, handleRedirector bool) error {
listenAddr := setting.HTTPAddr
if setting.Protocol != setting.HTTPUnix && setting.Protocol != setting.FCGIUnix {
listenAddr = net.JoinHostPort(listenAddr, setting.HTTPPort)
}
_, _, finished := process.GetManager().AddTypedContext(graceful.GetManager().HammerContext(), "Web: Gitea Server", process.SystemProcessType, true)
defer finished()
log.Info("Listen: %v://%s%s", setting.Protocol, listenAddr, setting.AppSubURL)
// This can be useful for users, many users do wrong to their config and get strange behaviors behind a reverse-proxy.
// A user may fix the configuration mistake when he sees this log.
// And this is also very helpful to maintainers to provide help to users to resolve their configuration problems.
log.Info("AppURL(ROOT_URL): %s", setting.AppURL)
if setting.LFS.StartServer {
log.Info("LFS server enabled")
}
var err error
switch setting.Protocol {
case setting.HTTP:
if handleRedirector {
NoHTTPRedirector()
}
err = runHTTP("tcp", listenAddr, "Web", m, setting.UseProxyProtocol)
case setting.HTTPS:
if setting.EnableAcme {
err = runACME(listenAddr, m)
break
}
if handleRedirector {
if setting.RedirectOtherPort {
go runHTTPRedirector()
} else {
NoHTTPRedirector()
}
}
err = runHTTPS("tcp", listenAddr, "Web", setting.CertFile, setting.KeyFile, m, setting.UseProxyProtocol, setting.ProxyProtocolTLSBridging)
case setting.FCGI:
if handleRedirector {
NoHTTPRedirector()
}
err = runFCGI("tcp", listenAddr, "FCGI Web", m, setting.UseProxyProtocol)
case setting.HTTPUnix:
if handleRedirector {
NoHTTPRedirector()
}
err = runHTTP("unix", listenAddr, "Web", m, setting.UseProxyProtocol)
case setting.FCGIUnix:
if handleRedirector {
NoHTTPRedirector()
}
err = runFCGI("unix", listenAddr, "Web", m, setting.UseProxyProtocol)
default:
log.Fatal("Invalid protocol: %s", setting.Protocol)
}
if err != nil {
log.Critical("Failed to start server: %v", err)
}
log.Info("HTTP Listener: %s Closed", listenAddr)
return err
}