func (x *cmdEnableClassic) doEnable() (err error) {
if classic.Enabled() {
return fmt.Errorf(i18n.G("Classic dimension is already enabled."))
}
pbar := progress.NewTextProgress()
if err := classic.Create(pbar); err != nil {
return err
}
fmt.Println(i18n.G(`Classic dimension enabled on this snappy system.
Use “snappy shell classic” to enter the classic dimension.`))
return nil
}
func wait(client *client.Client, id string) error {
pb := progress.NewTextProgress()
defer func() {
pb.Finished()
fmt.Print("\n")
}()
var lastID string
for {
chg, err := client.Change(id)
if err != nil {
return err
}
for _, t := range chg.Tasks {
switch {
case t.Status != "Doing":
continue
case t.Progress.Total == 1:
pb.Spin(t.Summary)
case t.ID == lastID:
pb.Set(float64(t.Progress.Done))
default:
pb.Start(t.Summary, float64(t.Progress.Total))
lastID = t.ID
}
break
}
if chg.Ready {
if chg.Status == "Done" {
return nil
}
if chg.Err != "" {
return errors.New(chg.Err)
}
return fmt.Errorf("change finished in status %q with no error message", chg.Status)
}
// note this very purposely is not a ticker; we want
// to sleep 100ms between calls, not call once every
// 100ms.
time.Sleep(100 * time.Millisecond)
}
}