/usr/share/pyshared/glance/registry/db/migrate_repo/versions/005_size_big_integer.py is in python-glance 2012.1.3+stable~20120821-120fcf-0ubuntu1.5.
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# Copyright 2011 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 migrate.changeset import *
from sqlalchemy import *
from glance.registry.db.migrate_repo.schema import (
Boolean, DateTime, BigInteger, Integer, String,
Text, from_migration_import)
def get_images_table(meta):
"""
Returns the Table object for the images table that
corresponds to the images table definition of this version.
"""
images = Table('images', meta,
Column('id', Integer(), primary_key=True, nullable=False),
Column('name', String(255)),
Column('disk_format', String(20)),
Column('container_format', String(20)),
Column('size', BigInteger()),
Column('status', String(30), nullable=False),
Column('is_public', Boolean(), nullable=False, default=False,
index=True),
Column('location', Text()),
Column('created_at', DateTime(), nullable=False),
Column('updated_at', DateTime()),
Column('deleted_at', DateTime()),
Column('deleted', Boolean(), nullable=False, default=False,
index=True),
mysql_engine='InnoDB',
useexisting=True)
return images
def get_image_properties_table(meta):
"""
No changes to the image properties table from 002...
"""
(define_image_properties_table,) = from_migration_import(
'002_add_image_properties_table', ['define_image_properties_table'])
image_properties = define_image_properties_table(meta)
return image_properties
def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
# No changes to SQLite stores are necessary, since
# there is no BIG INTEGER type in SQLite. Unfortunately,
# running the Python 005_size_big_integer.py migration script
# on a SQLite datastore results in an error in the sa-migrate
# code that does the workarounds for SQLite not having
# ALTER TABLE MODIFY COLUMN ability
dialect = migrate_engine.url.get_dialect().name
if not dialect.startswith('sqlite'):
(get_images_table,) = from_migration_import(
'003_add_disk_format', ['get_images_table'])
images = get_images_table(meta)
images.columns['size'].alter(type=BigInteger())
def downgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
# No changes to SQLite stores are necessary, since
# there is no BIG INTEGER type in SQLite. Unfortunately,
# running the Python 005_size_big_integer.py migration script
# on a SQLite datastore results in an error in the sa-migrate
# code that does the workarounds for SQLite not having
# ALTER TABLE MODIFY COLUMN ability
dialect = migrate_engine.url.get_dialect().name
if not dialect.startswith('sqlite'):
images = get_images_table(meta)
images.columns['size'].alter(type=Integer())
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