157 lines
3.6 KiB
Go
157 lines
3.6 KiB
Go
// 通知.
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package notification
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import (
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"net/http"
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"os"
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"os/exec"
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"runtime"
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"time"
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"strconv"
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"github.com/b3log/wide/conf"
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"github.com/b3log/wide/event"
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"github.com/b3log/wide/i18n"
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"github.com/b3log/wide/user"
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"github.com/golang/glog"
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"github.com/gorilla/websocket"
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)
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const (
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Error = "ERROR" // 通知.严重程度：ERROR
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Warn = "WARN" // 通知.严重程度：WARN
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Info = "INFO" // 通知.严重程度：INFO
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Setup = "Setup" // 通知.类型：安装
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)
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// 通知结构.
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type Notification struct {
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event *event.Event
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Type string `json:"type"`
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Severity string `json:"severity"`
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Message string `json:"message"`
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}
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// 一个用户会话的 WebSocket 通道结构.
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type WSChannel struct {
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Conn *websocket.Conn // WebSocket 连接
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Request *http.Request // 关联的 HTTP 请求
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Time time.Time // 该通道最近一次使用时间
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}
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// 通知通道.
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// <sid, WSChannel>
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var notificationWSs = map[string]*WSChannel{}
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// 用户事件处理：将事件转为通知，并通过通知通道推送给前端.
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// 当用户事件队列接收到事件时将会调用该函数进行处理.
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func event2Notification(e *event.Event) {
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if nil == notificationWSs[e.Sid] {
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return
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}
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wsChannel := notificationWSs[e.Sid]
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var notification Notification
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switch e.Code {
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case event.EvtCodeGocodeNotFound:
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notification = Notification{event: e, Type: Setup, Severity: Error}
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case event.EvtCodeIDEStubNotFound:
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notification = Notification{event: e, Type: Setup, Severity: Error}
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default:
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glog.Warningf("Can't handle event[code=%d]", e.Code)
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return
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}
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// 消息国际化处理
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notification.Message = i18n.Get(wsChannel.Request, "notification_"+strconv.Itoa(e.Code)).(string)
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wsChannel.Conn.WriteJSON(¬ification)
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}
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func WSHandler(w http.ResponseWriter, r *http.Request) {
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session, _ := user.Session.Get(r, "wide-session")
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sid := session.Values["id"].(string)
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conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
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wsChan := WSChannel{Conn: conn, Request: r, Time: time.Now()}
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notificationWSs[sid] = &wsChan
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ret := map[string]interface{}{"output": "Notification initialized", "cmd": "init-notification"}
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wsChan.Conn.WriteJSON(&ret)
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glog.Infof("Open a new [Notification] with session [%s], %d", sid, len(notificationWSs))
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// 初始化用户事件队列
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event.InitUserQueue(sid, event.HandleFunc(event2Notification))
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input := map[string]interface{}{}
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for {
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if err := wsChan.Conn.ReadJSON(&input); err != nil {
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if err.Error() == "EOF" {
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return
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}
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if err.Error() == "unexpected EOF" {
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return
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}
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glog.Error("Notification WS ERROR: " + err.Error())
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return
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}
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output := ""
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ret = map[string]interface{}{"output": output, "cmd": "notification-output"}
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if err := wsChan.Conn.WriteJSON(&ret); err != nil {
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glog.Error("Notification WS ERROR: " + err.Error())
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return
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}
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}
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}
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func pipeCommands(username string, commands ...*exec.Cmd) string {
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for i, command := range commands[:len(commands)-1] {
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setCmdEnv(command, username)
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stdout, err := command.StdoutPipe()
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if nil != err {
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return err.Error()
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}
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command.Start()
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commands[i+1].Stdin = stdout
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}
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last := commands[len(commands)-1]
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setCmdEnv(last, username)
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out, err := last.CombinedOutput()
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if err != nil {
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return err.Error()
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}
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return string(out)
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}
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func setCmdEnv(cmd *exec.Cmd, username string) {
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userWorkspace := conf.Wide.GetUserWorkspace(username)
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cmd.Env = append(cmd.Env,
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"TERM="+os.Getenv("TERM"),
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"GOPATH="+userWorkspace,
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"GOOS="+runtime.GOOS,
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"GOARCH="+runtime.GOARCH,
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"GOROOT="+runtime.GOROOT(),
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"PATH="+os.Getenv("PATH"))
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cmd.Dir = userWorkspace
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}
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