112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
// Notification manipulations.
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package notification
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import (
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"net/http"
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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/session"
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"github.com/b3log/wide/util"
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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" // notification.severity: ERROR
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Warn = "WARN" // notification.severity: WARN
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Info = "INFO" // notification.severity: INFO
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Setup = "Setup" // notification.type: setup
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Server = "Server" // notification.type: server
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)
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// Notification.
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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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// event2Notification processes user event by converting the specified event to a notification, and then push it to front
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// browser with notification channel.
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func event2Notification(e *event.Event) {
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if nil == session.NotificationWS[e.Sid] {
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return
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}
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wsChannel := session.NotificationWS[e.Sid]
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if nil == wsChannel {
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return
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}
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httpSession, _ := session.HTTPSession.Get(wsChannel.Request, "wide-session")
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username := httpSession.Values["username"].(string)
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locale := conf.Wide.GetUser(username).Locale
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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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fallthrough
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case event.EvtCodeIDEStubNotFound:
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notification = &Notification{event: e, Type: Setup, Severity: Error,
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Message: i18n.Get(locale, "notification_"+strconv.Itoa(e.Code)).(string)}
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case event.EvtCodeServerInternalError:
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notification = &Notification{event: e, Type: Server, Severity: Error,
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Message: i18n.Get(locale, "notification_"+strconv.Itoa(e.Code)).(string) + " [" + e.Data.(string) + "]"}
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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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wsChannel.Conn.WriteJSON(notification)
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wsChannel.Refresh()
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}
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// WSHandler handles request of creating notification channel.
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func WSHandler(w http.ResponseWriter, r *http.Request) {
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sid := r.URL.Query()["sid"][0]
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wSession := session.WideSessions.Get(sid)
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if nil == wSession {
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glog.Errorf("Session [%s] not found", sid)
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return
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}
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conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
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wsChan := util.WSChannel{Sid: sid, Conn: conn, Request: r, Time: time.Now()}
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session.NotificationWS[sid] = &wsChan
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glog.V(4).Infof("Open a new [Notification] with session [%s], %d", sid, len(session.NotificationWS))
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// add user event handler
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wSession.EventQueue.AddHandler(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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}
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}
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