glance/glance/db/sqlalchemy/migrate_repo/versions/014_add_image_tags_table.py

73 lines
2.9 KiB
Python

# Copyright 2012 OpenStack, LLC
# 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 sqlalchemy import schema
from glance.db.sqlalchemy.migrate_repo import schema as glance_schema
def define_image_tags_table(meta):
# Load the images table so the foreign key can be set up properly
schema.Table('images', meta, autoload=True)
image_tags = schema.Table('image_tags',
meta,
schema.Column('id',
glance_schema.Integer(),
primary_key=True,
nullable=False),
schema.Column('image_id',
glance_schema.String(36),
schema.ForeignKey('images.id'),
nullable=False),
schema.Column('value',
glance_schema.String(255),
nullable=False),
schema.Column('created_at',
glance_schema.DateTime(),
nullable=False),
schema.Column('updated_at',
glance_schema.DateTime()),
schema.Column('deleted_at',
glance_schema.DateTime()),
schema.Column('deleted',
glance_schema.Boolean(),
nullable=False,
default=False),
mysql_engine='InnoDB')
schema.Index('ix_image_tags_image_id',
image_tags.c.image_id)
schema.Index('ix_image_tags_image_id_tag_value',
image_tags.c.image_id,
image_tags.c.value)
return image_tags
def upgrade(migrate_engine):
meta = schema.MetaData()
meta.bind = migrate_engine
tables = [define_image_tags_table(meta)]
glance_schema.create_tables(tables)
def downgrade(migrate_engine):
meta = schema.MetaData()
meta.bind = migrate_engine
tables = [define_image_tags_table(meta)]
glance_schema.drop_tables(tables)