Pause and resume devices (ref #215)

cmd/syncthing/connections.go

@@ -158,6 +158,10 @@ next:
 			l.Infof("Connected to already connected device (%s)", remoteID)
 			c.Conn.Close()
 			continue
+		} else if s.model.IsPaused(remoteID) {
+			l.Infof("Connection from paused device (%s)", remoteID)
+			c.Conn.Close()
+			continue
 		}
 
 		for deviceID, deviceCfg := range s.cfg.Devices() {
@@ -235,6 +239,10 @@ func (s *connectionSvc) connect() {
 				continue
 			}
 
+			if s.model.IsPaused(deviceID) {
+				continue
+			}
+
 			connected := s.model.ConnectedTo(deviceID)
 
 			s.mut.RLock()

cmd/syncthing/gui.go

@@ -169,6 +169,8 @@ func (s *apiSvc) Serve() {
 	postRestMux.HandleFunc("/rest/system/restart", s.postSystemRestart)        // -
 	postRestMux.HandleFunc("/rest/system/shutdown", s.postSystemShutdown)      // -
 	postRestMux.HandleFunc("/rest/system/upgrade", s.postSystemUpgrade)        // -
+	postRestMux.HandleFunc("/rest/system/pause", s.postSystemPause)            // device
+	postRestMux.HandleFunc("/rest/system/resume", s.postSystemResume)          // device
 
 	// Debug endpoints, not for general use
 	getRestMux.HandleFunc("/rest/debug/peerCompletion", s.getPeerCompletion)
@@ -833,6 +835,32 @@ func (s *apiSvc) postSystemUpgrade(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func (s *apiSvc) postSystemPause(w http.ResponseWriter, r *http.Request) {
+	var qs = r.URL.Query()
+	var deviceStr = qs.Get("device")
+
+	device, err := protocol.DeviceIDFromString(deviceStr)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	s.model.PauseDevice(device)
+}
+
+func (s *apiSvc) postSystemResume(w http.ResponseWriter, r *http.Request) {
+	var qs = r.URL.Query()
+	var deviceStr = qs.Get("device")
+
+	device, err := protocol.DeviceIDFromString(deviceStr)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	s.model.ResumeDevice(device)
+}
+
 func (s *apiSvc) postDBScan(w http.ResponseWriter, r *http.Request) {
 	qs := r.URL.Query()
 	folder := qs.Get("folder")

cmd/syncthing/verbose.go

@@ -123,6 +123,15 @@ func (s *verboseSvc) formatEvent(ev events.Event) string {
 		delete(sum, "ignorePatterns")
 		delete(sum, "stateChanged")
 		return fmt.Sprintf("Summary for folder %q is %v", data["folder"], data["summary"])
+
+	case events.DevicePaused:
+		data := ev.Data.(map[string]string)
+		device := data["device"]
+		return fmt.Sprintf("Device %v was paused", device)
+	case events.DeviceResumed:
+		data := ev.Data.(map[string]string)
+		device := data["device"]
+		return fmt.Sprintf("Device %v was resumed", device)
 	}
 
 	return fmt.Sprintf("%s %#v", ev.Type, ev)