lib/model: Handle index sender lifetime (fixes #7034) (#7038)

lib/model/testutils_test.go

@@ -230,3 +230,41 @@ func folderIgnoresAlwaysReload(m *model, fcfg config.FolderConfiguration) {
 	m.addAndStartFolderLockedWithIgnores(fcfg, fset, ignores)
 	m.fmut.Unlock()
 }
+
+func basicClusterConfig(local, remote protocol.DeviceID, folders ...string) protocol.ClusterConfig {
+	var cc protocol.ClusterConfig
+	for _, folder := range folders {
+		cc.Folders = append(cc.Folders, protocol.Folder{
+			ID: folder,
+			Devices: []protocol.Device{
+				{
+					ID: local,
+				},
+				{
+					ID: remote,
+				},
+			},
+		})
+	}
+	return cc
+}
+
+func localIndexUpdate(m *model, folder string, fs []protocol.FileInfo) {
+	m.fmut.RLock()
+	fset := m.folderFiles[folder]
+	m.fmut.RUnlock()
+
+	fset.Update(protocol.LocalDeviceID, fs)
+	seq := fset.Sequence(protocol.LocalDeviceID)
+	filenames := make([]string, len(fs))
+	for i, file := range fs {
+		filenames[i] = file.Name
+	}
+	m.evLogger.Log(events.LocalIndexUpdated, map[string]interface{}{
+		"folder":    folder,
+		"items":     len(fs),
+		"filenames": filenames,
+		"sequence":  seq,
+		"version":   seq, // legacy for sequence
+	})
+}