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# 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 neutron_lib.objects import common_types
from oslo_versionedobjects import fields as obj_fields
import sqlalchemy as sa
from sqlalchemy.orm import joinedload
from sqlalchemy import sql
from neutron.common import _constants as n_const
from neutron.db.models import agent as agent_model
from neutron.db.models import l3_attrs
from neutron.db.models import l3agent
from neutron.objects import base
@base.NeutronObjectRegistry.register
class RouterL3AgentBinding(base.NeutronDbObject):
# Version 1.0: Initial version
VERSION = '1.0'
db_model = l3agent.RouterL3AgentBinding
primary_keys = ['router_id', 'l3_agent_id']
fields = {
'router_id': common_types.UUIDField(),
'l3_agent_id': common_types.UUIDField(),
'binding_index': obj_fields.IntegerField(
default=n_const.LOWEST_AGENT_BINDING_INDEX),
}
# TODO(ihrachys) return OVO objects not models
# TODO(ihrachys) move under Agent object class
@classmethod
def get_l3_agents_by_router_ids(cls, context, router_ids):
query = context.session.query(l3agent.RouterL3AgentBinding)
query = query.options(joinedload('l3_agent')).filter(
l3agent.RouterL3AgentBinding.router_id.in_(router_ids))
return [db_obj.l3_agent for db_obj in query.all()]
@classmethod
def get_down_router_bindings(cls, context, cutoff):
query = (context.session.query(
l3agent.RouterL3AgentBinding).
join(agent_model.Agent).
filter(agent_model.Agent.heartbeat_timestamp < cutoff,
agent_model.Agent.admin_state_up).outerjoin(
l3_attrs.RouterExtraAttributes,
l3_attrs.RouterExtraAttributes.router_id ==
l3agent.RouterL3AgentBinding.router_id).filter(
sa.or_(
l3_attrs.RouterExtraAttributes.ha == sql.false(),
l3_attrs.RouterExtraAttributes.ha == sql.null())))
bindings = [cls._load_object(context, db_obj) for db_obj in
query.all()]
return bindings
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