wide/main.go

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// Copyright (c) 2014, B3log
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package main
import (
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"compress/gzip"
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"flag"
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"html/template"
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"io"
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"math/rand"
"mime"
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"net/http"
"os"
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"runtime"
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"strconv"
"strings"
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"time"
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"github.com/b3log/wide/conf"
"github.com/b3log/wide/editor"
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"github.com/b3log/wide/event"
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"github.com/b3log/wide/file"
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"github.com/b3log/wide/i18n"
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"github.com/b3log/wide/log"
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"github.com/b3log/wide/notification"
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"github.com/b3log/wide/output"
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"github.com/b3log/wide/session"
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"github.com/b3log/wide/shell"
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"github.com/b3log/wide/util"
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)
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// Logger
var logger *log.Logger
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// The only one init function in Wide.
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func init() {
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confPath := flag.String("conf", "conf/wide.json", "path of wide.json")
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confIP := flag.String("ip", "", "ip to visit")
confPort := flag.String("port", "", "port to visit")
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confServer := flag.String("server", "", "this will overwrite Wide.Server if specified")
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confLogLevel := flag.String("log_level", "info", "logging level: trace/debug/info/warn/error")
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confStaticServer := flag.String("static_server", "", "this will overwrite Wide.StaticServer if specified")
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confContext := flag.String("context", "", "this will overwrite Wide.Context if specified")
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confChannel := flag.String("channel", "", "this will overwrite Wide.XXXChannel if specified")
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confStat := flag.Bool("stat", false, "whether report statistics periodically")
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confDocker := flag.Bool("docker", false, "whether run in a docker container")
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flag.Parse()
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log.SetLevel("warn")
logger = log.NewLogger(os.Stdout)
wd := util.OS.Pwd()
if strings.HasPrefix(wd, os.TempDir()) {
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logger.Error("Don't run wide in OS' temp directory or with `go run`")
os.Exit(-1)
}
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i18n.Load()
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event.Load()
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conf.Load(*confPath, *confIP, *confPort, *confServer, *confLogLevel, *confStaticServer, *confContext, *confChannel,
*confDocker)
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conf.FixedTimeCheckEnv()
conf.FixedTimeSave()
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session.FixedTimeRelease()
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if *confStat {
session.FixedTimeReport()
}
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}
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// indexHandler handles request of Wide index.
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func indexHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
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if httpSession.IsNew {
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http.Redirect(w, r, conf.Wide.Context+"login", http.StatusFound)
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return
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}
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httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
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if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
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httpSession.Save(r, w)
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// create a Wide session
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rand.Seed(time.Now().UnixNano())
sid := strconv.Itoa(rand.Int())
wideSession := session.WideSessions.New(httpSession, sid)
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username := httpSession.Values["username"].(string)
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user := conf.Wide.GetUser(username)
if nil == user {
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logger.Warnf("Not found user [%s]", username)
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http.Redirect(w, r, conf.Wide.Context+"login", http.StatusFound)
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return
}
locale := user.Locale
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wideSessions := session.WideSessions.GetByUsername(username)
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model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
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"session": wideSession, "latestSessionContent": user.LatestSessionContent,
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"pathSeparator": conf.PathSeparator, "codeMirrorVer": conf.CodeMirrorVer,
"user": user, "editorThemes": conf.GetEditorThemes()}
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logger.Debugf("User [%s] has [%d] sessions", username, len(wideSessions))
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t, err := template.ParseFiles("views/index.html")
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if nil != err {
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logger.Error(err)
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http.Error(w, err.Error(), 500)
return
}
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t.Execute(w, model)
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}
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// serveSingle registers the handler function for the given pattern and filename.
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func serveSingle(pattern string, filename string) {
http.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filename)
})
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}
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// startHandler handles request of start page.
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func startHandler(w http.ResponseWriter, r *http.Request) {
httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
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http.Redirect(w, r, conf.Wide.Context+"login", http.StatusFound)
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return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
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if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
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httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
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locale := conf.Wide.GetUser(username).Locale
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userWorkspace := conf.Wide.GetUserWorkspace(username)
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sid := r.URL.Query()["sid"][0]
wSession := session.WideSessions.Get(sid)
if nil == wSession {
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logger.Errorf("Session [%s] not found", sid)
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}
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model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
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"username": username, "workspace": userWorkspace, "ver": conf.WideVersion, "session": wSession}
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t, err := template.ParseFiles("views/start.html")
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if nil != err {
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logger.Error(err)
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http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
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// keyboardShortcutsHandler handles request of keyboard shortcuts page.
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func keyboardShortcutsHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
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http.Redirect(w, r, conf.Wide.Context+"login", http.StatusFound)
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return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
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if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
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httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
locale := conf.Wide.GetUser(username).Locale
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale}
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t, err := template.ParseFiles("views/keyboard_shortcuts.html")
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if nil != err {
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logger.Error(err)
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http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
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// aboutHandle handles request of about page.
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func aboutHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
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http.Redirect(w, r, conf.Wide.Context+"login", http.StatusFound)
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return
}
httpSession.Options.MaxAge = conf.Wide.HTTPSessionMaxAge
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if "" != conf.Wide.Context {
httpSession.Options.Path = conf.Wide.Context
}
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httpSession.Save(r, w)
username := httpSession.Values["username"].(string)
locale := conf.Wide.GetUser(username).Locale
model := map[string]interface{}{"conf": conf.Wide, "i18n": i18n.GetAll(locale), "locale": locale,
"ver": conf.WideVersion, "goos": runtime.GOOS, "goarch": runtime.GOARCH, "gover": runtime.Version()}
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t, err := template.ParseFiles("views/about.html")
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if nil != err {
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logger.Error(err)
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http.Error(w, err.Error(), 500)
return
}
t.Execute(w, model)
}
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// Main.
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func main() {
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runtime.GOMAXPROCS(conf.Wide.MaxProcs)
initMime()
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// IDE
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http.HandleFunc(conf.Wide.Context+"/", handlerGzWrapper(indexHandler))
http.HandleFunc(conf.Wide.Context+"/start", handlerWrapper(startHandler))
http.HandleFunc(conf.Wide.Context+"/about", handlerWrapper(aboutHandler))
http.HandleFunc(conf.Wide.Context+"/keyboard_shortcuts", handlerWrapper(keyboardShortcutsHandler))
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// static resources
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http.Handle(conf.Wide.Context+"/static/", http.StripPrefix(conf.Wide.Context+"/static/", http.FileServer(http.Dir("static"))))
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serveSingle("/favicon.ico", "./static/favicon.ico")
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// workspaces
for _, user := range conf.Wide.Users {
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http.Handle(conf.Wide.Context+"/workspace/"+user.Name+"/",
http.StripPrefix(conf.Wide.Context+"/workspace/"+user.Name+"/", http.FileServer(http.Dir(user.GetWorkspace()))))
}
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// session
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http.HandleFunc(conf.Wide.Context+"/session/ws", handlerWrapper(session.WSHandler))
http.HandleFunc(conf.Wide.Context+"/session/save", handlerWrapper(session.SaveContent))
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// run
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http.HandleFunc(conf.Wide.Context+"/build", handlerWrapper(output.BuildHandler))
http.HandleFunc(conf.Wide.Context+"/run", handlerWrapper(output.RunHandler))
http.HandleFunc(conf.Wide.Context+"/stop", handlerWrapper(output.StopHandler))
http.HandleFunc(conf.Wide.Context+"/go/test", handlerWrapper(output.GoTestHandler))
http.HandleFunc(conf.Wide.Context+"/go/get", handlerWrapper(output.GoGetHandler))
http.HandleFunc(conf.Wide.Context+"/go/install", handlerWrapper(output.GoInstallHandler))
http.HandleFunc(conf.Wide.Context+"/output/ws", handlerWrapper(output.WSHandler))
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// file tree
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http.HandleFunc(conf.Wide.Context+"/files", handlerWrapper(file.GetFiles))
http.HandleFunc(conf.Wide.Context+"/file/refresh", handlerWrapper(file.RefreshDirectory))
http.HandleFunc(conf.Wide.Context+"/file", handlerWrapper(file.GetFile))
http.HandleFunc(conf.Wide.Context+"/file/save", handlerWrapper(file.SaveFile))
http.HandleFunc(conf.Wide.Context+"/file/new", handlerWrapper(file.NewFile))
http.HandleFunc(conf.Wide.Context+"/file/remove", handlerWrapper(file.RemoveFile))
http.HandleFunc(conf.Wide.Context+"/file/rename", handlerWrapper(file.RenameFile))
http.HandleFunc(conf.Wide.Context+"/file/search/text", handlerWrapper(file.SearchText))
http.HandleFunc(conf.Wide.Context+"/file/find/name", handlerWrapper(file.Find))
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// file export/import
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http.HandleFunc(conf.Wide.Context+"/file/zip/new", handlerWrapper(file.CreateZip))
http.HandleFunc(conf.Wide.Context+"/file/zip", handlerWrapper(file.GetZip))
http.HandleFunc(conf.Wide.Context+"/file/upload", handlerWrapper(file.Upload))
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// editor
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http.HandleFunc(conf.Wide.Context+"/editor/ws", handlerWrapper(editor.WSHandler))
http.HandleFunc(conf.Wide.Context+"/go/fmt", handlerWrapper(editor.GoFmtHandler))
http.HandleFunc(conf.Wide.Context+"/autocomplete", handlerWrapper(editor.AutocompleteHandler))
http.HandleFunc(conf.Wide.Context+"/exprinfo", handlerWrapper(editor.GetExprInfoHandler))
http.HandleFunc(conf.Wide.Context+"/find/decl", handlerWrapper(editor.FindDeclarationHandler))
http.HandleFunc(conf.Wide.Context+"/find/usages", handlerWrapper(editor.FindUsagesHandler))
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// shell
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http.HandleFunc(conf.Wide.Context+"/shell/ws", handlerWrapper(shell.WSHandler))
http.HandleFunc(conf.Wide.Context+"/shell", handlerWrapper(shell.IndexHandler))
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// notification
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http.HandleFunc(conf.Wide.Context+"/notification/ws", handlerWrapper(notification.WSHandler))
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// user
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http.HandleFunc(conf.Wide.Context+"/login", handlerWrapper(session.LoginHandler))
http.HandleFunc(conf.Wide.Context+"/logout", handlerWrapper(session.LogoutHandler))
http.HandleFunc(conf.Wide.Context+"/signup", handlerWrapper(session.SignUpUser))
http.HandleFunc(conf.Wide.Context+"/preference", handlerWrapper(session.PreferenceHandler))
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logger.Infof("Wide is running [%s]", conf.Wide.Server+conf.Wide.Context)
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err := http.ListenAndServe(conf.Wide.Server, nil)
if err != nil {
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logger.Error(err)
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}
}
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// handlerWrapper wraps the HTTP Handler for some common processes.
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//
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// 1. panic recover
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// 2. request stopwatch
// 3. i18n
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func handlerWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
handler := panicRecover(f)
handler = stopwatch(handler)
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handler = i18nLoad(handler)
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return handler
}
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// handlerGzWrapper wraps the HTTP Handler for some common processes.
//
// 1. panic recover
// 2. gzip response
// 3. request stopwatch
// 4. i18n
func handlerGzWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
handler := panicRecover(f)
handler = gzipWrapper(handler)
handler = stopwatch(handler)
handler = i18nLoad(handler)
return handler
}
// gzipWrapper wraps the process with response gzip.
func gzipWrapper(f func(http.ResponseWriter, *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
f(w, r)
return
}
w.Header().Set("Content-Encoding", "gzip")
gz := gzip.NewWriter(w)
defer gz.Close()
gzr := gzipResponseWriter{Writer: gz, ResponseWriter: w}
f(gzr, r)
}
}
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// i18nLoad wraps the i18n process.
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func i18nLoad(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
i18n.Load()
handler(w, r)
}
}
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// stopwatch wraps the request stopwatch process.
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func stopwatch(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
start := time.Now()
defer func() {
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logger.Tracef("[%s] [%s]", r.RequestURI, time.Since(start))
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}()
handler(w, r)
}
}
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// panicRecover wraps the panic recover process.
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func panicRecover(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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defer util.Recover()
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handler(w, r)
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}
}
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// initMime initializes mime types.
//
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// We can't get the mime types on some OS (such as Windows XP) by default, so initializes them here.
func initMime() {
mime.AddExtensionType(".css", "text/css")
mime.AddExtensionType(".js", "application/x-javascript")
mime.AddExtensionType(".json", "application/json")
}
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// gzipResponseWriter represents a gzip response writer.
type gzipResponseWriter struct {
io.Writer
http.ResponseWriter
}
// Write writes response with appropriate 'Content-Type'.
func (w gzipResponseWriter) Write(b []byte) (int, error) {
if "" == w.Header().Get("Content-Type") {
// If no content type, apply sniffing algorithm to un-gzipped body.
w.Header().Set("Content-Type", http.DetectContentType(b))
}
return w.Writer.Write(b)
}