73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
# 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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"""add visibility to and remove is_public from images
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Revision ID: ocata01
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Revises: mitaka02
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Create Date: 2017-01-20 12:58:16.647499
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"""
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import os
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from alembic import op
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from sqlalchemy import Column, Enum, MetaData, select, Table, not_, and_
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import sqlparse
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# revision identifiers, used by Alembic.
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revision = 'ocata01'
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down_revision = 'mitaka02'
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branch_labels = None
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depends_on = None
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def upgrade():
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migrate_engine = op.get_bind()
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meta = MetaData(bind=migrate_engine)
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engine_name = migrate_engine.engine.name
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if engine_name == 'sqlite':
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sql_file = os.path.splitext(__file__)[0]
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sql_file += '.sql'
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with open(sql_file, 'r') as sqlite_script:
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sql = sqlparse.format(sqlite_script.read(), strip_comments=True)
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for statement in sqlparse.split(sql):
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op.execute(statement)
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return
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enum = Enum('private', 'public', 'shared', 'community', metadata=meta,
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name='image_visibility')
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enum.create()
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v_col = Column('visibility', enum, nullable=False, server_default='shared')
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op.add_column('images', v_col)
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op.create_index('visibility_image_idx', 'images', ['visibility'])
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images = Table('images', meta, autoload=True)
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images.update(values={'visibility': 'public'}).where(
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images.c.is_public).execute()
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image_members = Table('image_members', meta, autoload=True)
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# NOTE(dharinic): Mark all the non-public images as 'private' first
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images.update().values(visibility='private').where(
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not_(images.c.is_public)).execute()
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# NOTE(dharinic): Identify 'shared' images from the above
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images.update().values(visibility='shared').where(and_(
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images.c.visibility == 'private', images.c.id.in_(select(
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[image_members.c.image_id]).distinct().where(
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not_(image_members.c.deleted))))).execute()
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op.drop_index('ix_images_is_public', 'images')
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op.drop_column('images', 'is_public')
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