# Copyright (c) 2016 Mirantis, Inc.
# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

from oslo_config import cfg

from kuryr_kubernetes import config
from kuryr_kubernetes.controller.drivers import base


class DefaultPodSecurityGroupsDriver(base.PodSecurityGroupsDriver):
    """Provides security groups for Pod based on a configuration option."""

    def get_security_groups(self, pod, project_id):
        sg_list = config.CONF.neutron_defaults.pod_security_groups

        if not sg_list:
            # NOTE(ivc): this option is only required for
            # DefaultPodSecurityGroupsDriver and its subclasses, but it may be
            # optional for other drivers (e.g. when each namespace has own
            # set of security groups)
            raise cfg.RequiredOptError('pod_security_groups',
                                       'neutron_defaults')

        return sg_list[:]