def check(self):
logger.info('Check required Fuel version')
if self.from_version not in self.can_upgrade_from:
raise errors.WrongVersionError(
'Cannot upgrade from Fuel {0}. You can upgrade only from '
'one of next versions: {1}'.format(
self.from_version, ', '.join(self.can_upgrade_from)))
def check(self):
"""Compares two versions previous and new
:raises: WrongVersionError
"""
logger.info('Check upgrade versions')
result = utils.compare_version(self.from_version, self.to_version)
err_msg = None
if result == 0:
err_msg = 'Cannot upgrade to the same version of fuel ' \
'{0} -> {1}'.format(
self.from_version, self.to_version)
elif result == -1:
err_msg = 'Cannot upgrade from higher version of fuel ' \
'to lower {0} -> {1}'.format(
self.from_version, self.to_version)
if err_msg:
raise errors.WrongVersionError(err_msg)