Source code for keystone.limit.models.base

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import abc

import stevedore

import keystone.conf
from keystone.i18n import _

CONF = keystone.conf.CONF

[docs]def load_driver(driver_name, *args): namespace = 'keystone.unified_limit.model' try: driver_manager = stevedore.DriverManager(namespace, driver_name, invoke_on_load=True, invoke_args=args) return driver_manager.driver except stevedore.exception.NoMatches: msg = (_('Unable to find %(name)r driver in %(namespace)r.')) raise ImportError(msg % {'name': driver_name, 'namespace': namespace})
[docs]class ModelBase(object, metaclass=abc.ABCMeta): """Interface for a limit model driver.""" NAME = None DESCRIPTION = None MAX_PROJECT_TREE_DEPTH = None
[docs] def check_limit(self, limits): """Check the new creating or updating limits if satisfy the model. :param limits: A list of the limit references to be checked. :type limits: A list of the limits. Each limit is a dictionary reference containing all limit attributes. :raises keystone.exception.InvalidLimit: If any of the input limits doesn't satisfy the limit model. """ raise NotImplementedError()