Add folder synchronization status.

[src/xds/xds-server.git] / lib / apiv1 / events.go

diff --git a/lib/apiv1/events.go b/lib/apiv1/events.go
new file mode 100644 (file)
index 0000000..da8298c
--- /dev/null
+++ b/lib/apiv1/events.go
@@ -0,0 +1,147 @@
+package apiv1
+
+import (
+       "net/http"
+       "time"
+
+       "github.com/iotbzh/xds-server/lib/folder"
+
+       "github.com/gin-gonic/gin"
+       common "github.com/iotbzh/xds-common/golib"
+)
+
+// EventArgs is the parameters (json format) of /events/register command
+type EventRegisterArgs struct {
+       Name      string `json:"name"`
+       ProjectID string `json:"filterProjectID"`
+}
+
+type EventUnRegisterArgs struct {
+       Name string `json:"name"`
+       ID   int    `json:"id"`
+}
+
+// EventMsg Message send
+type EventMsg struct {
+       Time   string              `json:"time"`
+       Type   string              `json:"type"`
+       Folder folder.FolderConfig `json:"folder"`
+}
+
+// EventEvent Event send in WS when an internal event (eg. Syncthing event is received)
+const EventEventAll = "event:all"
+const EventEventType = "event:" // following by event type
+
+// eventsList Registering for events that will be send over a WS
+func (s *APIService) eventsList(c *gin.Context) {
+
+}
+
+// eventsRegister Registering for events that will be send over a WS
+func (s *APIService) eventsRegister(c *gin.Context) {
+       var args EventRegisterArgs
+
+       if c.BindJSON(&args) != nil {
+               common.APIError(c, "Invalid arguments")
+               return
+       }
+
+       sess := s.sessions.Get(c)
+       if sess == nil {
+               common.APIError(c, "Unknown sessions")
+               return
+       }
+
+       evType := "FolderStateChanged"
+       if args.Name != evType {
+               common.APIError(c, "Unsupported event name")
+               return
+       }
+
+       /* XXX - to be removed if no plan to support "generic" event
+       var cbFunc st.EventsCB
+       cbFunc = func(ev st.Event, data *st.EventsCBData) {
+
+               evid, _ := strconv.Atoi((*data)["id"].(string))
+               ssid := (*data)["sid"].(string)
+               so := s.sessions.IOSocketGet(ssid)
+               if so == nil {
+                       s.log.Infof("Event %s not emitted - sid: %s", ev.Type, ssid)
+
+                       // Consider that client disconnected, so unregister this event
+                       s.mfolders.SThg.Events.UnRegister(ev.Type, evid)
+                       return
+               }
+
+               msg := EventMsg{
+                       Time: ev.Time,
+                       Type: ev.Type,
+                       Data: ev.Data,
+               }
+
+               if err := (*so).Emit(EventEventAll, msg); err != nil {
+                       s.log.Errorf("WS Emit Event : %v", err)
+               }
+
+               if err := (*so).Emit(EventEventType+ev.Type, msg); err != nil {
+                       s.log.Errorf("WS Emit Event : %v", err)
+               }
+       }
+
+       data := make(st.EventsCBData)
+       data["sid"] = sess.ID
+
+       id, err := s.mfolders.SThg.Events.Register(args.Name, cbFunc, args.ProjectID, &data)
+       */
+
+       var cbFunc folder.EventCB
+       cbFunc = func(cfg *folder.FolderConfig, data *folder.EventCBData) {
+               ssid := (*data)["sid"].(string)
+               so := s.sessions.IOSocketGet(ssid)
+               if so == nil {
+                       //s.log.Infof("Event %s not emitted - sid: %s", ev.Type, ssid)
+
+                       // Consider that client disconnected, so unregister this event
+                       // SEB FIXMEs.mfolders.RegisterEventChange(ev.Type)
+                       return
+               }
+
+               msg := EventMsg{
+                       Time:   time.Now().String(),
+                       Type:   evType,
+                       Folder: *cfg,
+               }
+
+               if err := (*so).Emit(EventEventType+evType, msg); err != nil {
+                       s.log.Errorf("WS Emit Folder StateChanged event : %v", err)
+               }
+       }
+       data := make(folder.EventCBData)
+       data["sid"] = sess.ID
+
+       err := s.mfolders.RegisterEventChange(args.ProjectID, &cbFunc, &data)
+       if err != nil {
+               common.APIError(c, err.Error())
+               return
+       }
+
+       c.JSON(http.StatusOK, gin.H{"status": "OK"})
+}
+
+// eventsRegister Registering for events that will be send over a WS
+func (s *APIService) eventsUnRegister(c *gin.Context) {
+       var args EventUnRegisterArgs
+
+       if c.BindJSON(&args) != nil || args.Name == "" || args.ID < 0 {
+               common.APIError(c, "Invalid arguments")
+               return
+       }
+       /* TODO
+       if err := s.mfolders.SThg.Events.UnRegister(args.Name, args.ID); err != nil {
+               common.APIError(c, err.Error())
+               return
+       }
+       c.JSON(http.StatusOK, gin.H{"status": "OK"})
+       */
+       common.APIError(c, "Not implemented yet")
+}