72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
# Copyright 2015 OpenStack Foundation
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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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#
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from alembic import op
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from neutron_lib import exceptions
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import sqlalchemy as sa
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from neutron._i18n import _
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"""add_unique_ha_router_agent_port_bindings
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Revision ID: 1df244e556f5
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Revises: 34af2b5c5a59
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Create Date: 2015-10-02 18:06:01.696742
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"""
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# revision identifiers, used by Alembic.
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revision = '1df244e556f5'
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down_revision = '659bf3d90664'
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UNIQUE_NAME = 'uniq_ha_router_agent_port_bindings0port_id0l3_agent_id'
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TABLE_NAME = 'ha_router_agent_port_bindings'
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ha_router_agent_port_bindings = sa.Table(
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'ha_router_agent_port_bindings', sa.MetaData(),
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sa.Column('port_id', sa.String(36)),
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sa.Column('router_id', sa.String(36)),
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sa.Column('l3_agent_id', sa.String(36)))
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class DuplicateL3HARouterAgentPortBinding(exceptions.Conflict):
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message = _("Duplicate L3HARouterAgentPortBinding is created for "
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"router(s) %(router)s. Database cannot be upgraded. Please, "
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"remove all duplicates before upgrading the database.")
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def upgrade():
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op.create_unique_constraint(UNIQUE_NAME, TABLE_NAME,
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['router_id', 'l3_agent_id'])
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def check_sanity(connection):
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res = get_duplicate_l3_ha_port_bindings(connection)
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if res:
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raise DuplicateL3HARouterAgentPortBinding(router=", ".join(res))
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def get_duplicate_l3_ha_port_bindings(connection):
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insp = sa.engine.reflection.Inspector.from_engine(connection)
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if 'ha_router_agent_port_bindings' not in insp.get_table_names():
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return {}
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session = sa.orm.Session(bind=connection.connect())
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query = (session.query(ha_router_agent_port_bindings.c.router_id)
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.group_by(ha_router_agent_port_bindings.c.router_id,
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ha_router_agent_port_bindings.c.l3_agent_id)
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.having(sa.func.count() > 1)).all()
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return [q[0] for q in query]
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