75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
#
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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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import sqlalchemy
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def upgrade(migrate_engine):
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meta = sqlalchemy.MetaData(bind=migrate_engine)
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stack = sqlalchemy.Table('stack', meta, autoload=True)
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backup = sqlalchemy.Column('backup', sqlalchemy.Boolean(), default=False)
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backup.create(stack)
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# Set backup flag for backup stacks, which are the only ones named "foo*"
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not_deleted = None
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stmt = sqlalchemy.select([stack.c.id,
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stack.c.name]).\
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where(stack.c.deleted_at == not_deleted)
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stacks = migrate_engine.execute(stmt)
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for s in stacks:
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if s.name.endswith('*'):
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values = {'backup': True}
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update = stack.update().where(
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stack.c.id == s.id).values(values)
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migrate_engine.execute(update)
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def downgrade(migrate_engine):
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meta = sqlalchemy.MetaData(bind=migrate_engine)
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stack = sqlalchemy.Table('stack', meta, autoload=True)
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if migrate_engine.name == 'sqlite':
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_downgrade_045_sqlite(migrate_engine, meta, stack)
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else:
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stack.c.backup.drop()
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def _downgrade_045_sqlite(migrate_engine, metadata, table):
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table_name = table.name
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constraints = [
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c.copy() for c in table.constraints
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if not isinstance(c, sqlalchemy.CheckConstraint)
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]
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columns = [c.copy() for c in table.columns if c.name != "backup"]
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new_table = sqlalchemy.Table(table_name + "__tmp__", metadata,
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*(columns + constraints))
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new_table.create()
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migrate_data = """
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INSERT INTO stack__tmp__
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SELECT id, created_at, updated_at, name, raw_template_id,
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user_creds_id, username, owner_id, status, status_reason,
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parameters, timeout, tenant, disable_rollback, action,
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deleted_at, stack_user_project_id
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FROM stack;"""
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migrate_engine.execute(migrate_data)
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table.drop()
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new_table.rename(table_name)
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