コード例 #1
0
ファイル: snapstate.go プロジェクト: elopio/snappy
// UpdateMany updates everything from the given list of names that the
// store says is updateable. If the list is empty, update everything.
// Note that the state must be locked by the caller.
func UpdateMany(st *state.State, names []string, userID int) ([]string, []*state.TaskSet, error) {
	user, err := userFromUserID(st, userID)
	if err != nil {
		return nil, nil, err
	}

	updates, stateByID, err := refreshCandidates(st, names, user)
	if err != nil {
		return nil, nil, err
	}

	if ValidateRefreshes != nil && len(updates) != 0 {
		updates, err = ValidateRefreshes(st, updates, userID)
		if err != nil {
			// not doing "refresh all" report the error
			if len(names) != 0 {
				return nil, nil, err
			}
			// doing "refresh all", log the problems
			logger.Noticef("cannot refresh some snaps: %v", err)
		}
	}

	updated := make([]string, 0, len(updates))
	tasksets := make([]*state.TaskSet, 0, len(updates))
	for _, update := range updates {
		snapst := stateByID[update.SnapID]

		ss := &SnapSetup{
			Channel:      snapst.Channel,
			UserID:       userID,
			Flags:        snapst.Flags.ForSnapSetup(),
			DownloadInfo: &update.DownloadInfo,
			SideInfo:     &update.SideInfo,
		}

		ts, err := doInstall(st, snapst, ss)
		if err != nil {
			if len(names) == 0 {
				// doing "refresh all", just skip this snap
				logger.Noticef("cannot refresh snap %q: %v", update.Name(), err)
				continue
			}
			return nil, nil, err
		}
		ts.JoinLane(st.NewLane())

		updated = append(updated, update.Name())
		tasksets = append(tasksets, ts)
	}

	return updated, tasksets, nil
}