70 lines
2.9 KiB
Python
70 lines
2.9 KiB
Python
# Copyright (c) 2014 OpenStack Foundation. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from neutron_lib.api.definitions import l3 as l3_apidef
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from neutron_lib.api.validators import availability_zone as az_validator
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from neutron_lib.db import resource_extend
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from oslo_config import cfg
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from neutron._i18n import _
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from neutron.db.models import l3_attrs
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def get_attr_info():
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"""Returns api visible attr names and their default values."""
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return {'distributed': {'default': cfg.CONF.router_distributed},
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'ha': {'default': cfg.CONF.l3_ha},
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'ha_vr_id': {'default': 0},
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'availability_zone_hints': {
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'default': '[]',
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'transform_to_db': az_validator.convert_az_list_to_string,
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'transform_from_db': az_validator.convert_az_string_to_list}
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}
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@resource_extend.has_resource_extenders
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class ExtraAttributesMixin(object):
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"""Mixin class to enable router's extra attributes."""
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@staticmethod
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@resource_extend.extends([l3_apidef.ROUTERS])
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def _extend_extra_router_dict(router_res, router_db):
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extra_attrs = router_db['extra_attributes'] or {}
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for name, info in get_attr_info().items():
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from_db = info.get('transform_from_db', lambda x: x)
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router_res[name] = from_db(extra_attrs.get(name, info['default']))
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def _ensure_extra_attr_model(self, context, router_db):
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if not router_db['extra_attributes']:
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kwargs = {k: v['default'] for k, v in get_attr_info().items()}
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kwargs['router_id'] = router_db['id']
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new = l3_attrs.RouterExtraAttributes(**kwargs)
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context.session.add(new)
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router_db['extra_attributes'] = new
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def set_extra_attr_value(self, context, router_db, key, value):
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if not context.session.is_active:
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raise RuntimeError(_("set_extra_attr_value cannot be called "
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"out of a transaction."))
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# set a single value explicitly
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if key in get_attr_info():
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info = get_attr_info()[key]
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to_db = info.get('transform_to_db', lambda x: x)
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self._ensure_extra_attr_model(context, router_db)
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router_db['extra_attributes'].update({key: to_db(value)})
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return
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raise RuntimeError(_("Tried to set a key '%s' that doesn't exist "
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"in the extra attributes table.") % key)
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