backup.py 文件源码

def check():
    """ Checks whether a new backup should be created. Creates one if needed as well. """
    backup_settings = BackupSettings.get_solo()

    # Skip when backups disabled.
    if not backup_settings.daily_backup:
        return

    # Postpone when we already created a backup today.
    if backup_settings.latest_backup and backup_settings.latest_backup.date() == timezone.now().date():
        return

    # Timezone magic to make sure we select and combine the CURRENT day, in the user's timezone.
    next_backup_timestamp = timezone.make_aware(timezone.datetime.combine(
        timezone.localtime(timezone.now()), backup_settings.backup_time
    ))

    if backup_settings.latest_backup and timezone.now() < next_backup_timestamp:
        # Postpone when the user's backup time preference has not been passed yet.
        return

    # For backend logging in Supervisor.
    print(' - Creating new backup.')
    create()