85 lines
3.5 KiB
Python
85 lines
3.5 KiB
Python
# 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.
|
|
|
|
import sqlalchemy
|
|
from sqlalchemy import Table, Index, UniqueConstraint
|
|
from sqlalchemy.schema import (AddConstraint, DropConstraint,
|
|
ForeignKeyConstraint)
|
|
from sqlalchemy import sql
|
|
from sqlalchemy import update
|
|
|
|
|
|
def upgrade(migrate_engine):
|
|
meta = sqlalchemy.MetaData()
|
|
meta.bind = migrate_engine
|
|
|
|
if migrate_engine.name not in ['mysql', 'postgresql']:
|
|
return
|
|
|
|
image_properties = Table('image_properties', meta, autoload=True)
|
|
image_members = Table('image_members', meta, autoload=True)
|
|
images = Table('images', meta, autoload=True)
|
|
|
|
# We have to ensure that we doesn't have `nulls` values since we are going
|
|
# to set nullable=False
|
|
migrate_engine.execute(
|
|
update(image_members)
|
|
.where(image_members.c.status == sql.expression.null())
|
|
.values(status='pending'))
|
|
|
|
migrate_engine.execute(
|
|
update(images)
|
|
.where(images.c.protected == sql.expression.null())
|
|
.values(protected=sql.expression.false()))
|
|
|
|
image_members.c.status.alter(nullable=False, server_default='pending')
|
|
images.c.protected.alter(
|
|
nullable=False, server_default=sql.expression.false())
|
|
|
|
if migrate_engine.name == 'postgresql':
|
|
Index('ix_image_properties_image_id_name',
|
|
image_properties.c.image_id,
|
|
image_properties.c.name).drop()
|
|
|
|
# We have different names of this constraint in different versions of
|
|
# postgresql. Since we have only one constraint on this table, we can
|
|
# get it in the following way.
|
|
name = migrate_engine.execute(
|
|
"""SELECT conname
|
|
FROM pg_constraint
|
|
WHERE conrelid =
|
|
(SELECT oid
|
|
FROM pg_class
|
|
WHERE relname LIKE 'image_properties')
|
|
AND contype = 'u';""").scalar()
|
|
|
|
constraint = UniqueConstraint(image_properties.c.image_id,
|
|
image_properties.c.name,
|
|
name='%s' % name)
|
|
migrate_engine.execute(DropConstraint(constraint))
|
|
|
|
constraint = UniqueConstraint(image_properties.c.image_id,
|
|
image_properties.c.name,
|
|
name='ix_image_properties_image_id_name')
|
|
migrate_engine.execute(AddConstraint(constraint))
|
|
|
|
images.c.id.alter(server_default=None)
|
|
if migrate_engine.name == 'mysql':
|
|
constraint = UniqueConstraint(image_properties.c.image_id,
|
|
image_properties.c.name,
|
|
name='image_id')
|
|
migrate_engine.execute(DropConstraint(constraint))
|
|
image_locations = Table('image_locations', meta, autoload=True)
|
|
if len(image_locations.foreign_keys) == 0:
|
|
migrate_engine.execute(AddConstraint(ForeignKeyConstraint(
|
|
[image_locations.c.image_id], [images.c.id])))
|