154 lines
5.3 KiB
Python
154 lines
5.3 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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import uuid
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from cinder.openstack.common import log as logging
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from migrate import ForeignKeyConstraint
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from sqlalchemy import Integer, MetaData, String, Table
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LOG = logging.getLogger(__name__)
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def upgrade(migrate_engine):
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"""Convert volume_type_id to UUID."""
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meta = MetaData()
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meta.bind = migrate_engine
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volumes = Table('volumes', meta, autoload=True)
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volume_types = Table('volume_types', meta, autoload=True)
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extra_specs = Table('volume_type_extra_specs', meta, autoload=True)
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fkey_remove_list = [volumes.c.volume_type_id,
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volume_types.c.id,
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extra_specs.c.volume_type_id]
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for column in fkey_remove_list:
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fkeys = list(column.foreign_keys)
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if fkeys:
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fkey_name = fkeys[0].constraint.name
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fkey = ForeignKeyConstraint(columns=[column],
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refcolumns=[volume_types.c.id],
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name=fkey_name)
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try:
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fkey.drop()
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except Exception:
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if migrate_engine.url.get_dialect().name.startswith('sqlite'):
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pass
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else:
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raise
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volumes.c.volume_type_id.alter(String(36))
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volume_types.c.id.alter(String(36))
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extra_specs.c.volume_type_id.alter(String(36))
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vtype_list = list(volume_types.select().execute())
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for t in vtype_list:
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new_id = str(uuid.uuid4())
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volumes.update().\
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where(volumes.c.volume_type_id == t['id']).\
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values(volume_type_id=new_id).execute()
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extra_specs.update().\
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where(extra_specs.c.volume_type_id == t['id']).\
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values(volume_type_id=new_id).execute()
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volume_types.update().\
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where(volume_types.c.id == t['id']).\
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values(id=new_id).execute()
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for column in fkey_remove_list:
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fkeys = list(column.foreign_keys)
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if fkeys:
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fkey_name = fkeys[0].constraint.name
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fkey = ForeignKeyConstraint(columns=[column],
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refcolumns=[volume_types.c.id],
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name=fkey_name)
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try:
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fkey.create()
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LOG.info('Created foreign key %s' % fkey_name)
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except Exception:
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if migrate_engine.url.get_dialect().name.startswith('sqlite'):
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pass
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else:
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raise
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def downgrade(migrate_engine):
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"""Convert volume_type from UUID back to int."""
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meta = MetaData()
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meta.bind = migrate_engine
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volumes = Table('volumes', meta, autoload=True)
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volume_types = Table('volume_types', meta, autoload=True)
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extra_specs = Table('volume_type_extra_specs', meta, autoload=True)
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fkey_remove_list = [volumes.c.volume_type_id,
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volume_types.c.id,
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extra_specs.c.volume_type_id]
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for column in fkey_remove_list:
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fkeys = list(column.foreign_keys)
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if fkeys:
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fkey_name = fkeys[0].constraint.name
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fkey = ForeignKeyConstraint(columns=[column],
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refcolumns=[volume_types.c.id],
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name=fkey_name)
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try:
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fkey.drop()
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except Exception:
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if migrate_engine.url.get_dialect().name.startswith('sqlite'):
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pass
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else:
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raise
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vtype_list = list(volume_types.select().execute())
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new_id = 1
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for t in vtype_list:
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volumes.update().\
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where(volumes.c.volume_type_id == t['id']).\
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values(volume_type_id=new_id).execute()
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extra_specs.update().\
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where(extra_specs.c.volume_type_id == t['id']).\
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values(volume_type_id=new_id).execute()
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volume_types.update().\
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where(volume_types.c.id == t['id']).\
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values(id=new_id).execute()
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new_id += 1
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volumes.c.volume_type_id.alter(Integer)
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volume_types.c.id.alter(Integer)
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extra_specs.c.volume_type_id.alter(Integer)
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for column in fkey_remove_list:
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fkeys = list(column.foreign_keys)
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if fkeys:
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fkey_name = fkeys[0].constraint.name
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fkey = ForeignKeyConstraint(columns=[column],
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refcolumns=[volume_types.c.id],
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name=fkey_name)
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try:
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fkey.create()
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LOG.info('Created foreign key %s' % fkey_name)
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except Exception:
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if migrate_engine.url.get_dialect().name.startswith('sqlite'):
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pass
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else:
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raise
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