Source code for keystone.common.sql.migrate_repo.versions.050_fk_consistent_indexes

# Copyright 2014 Mirantis.inc
# All Rights Reserved.
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# 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
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#      http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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import sqlalchemy as sa


[docs]def upgrade(migrate_engine): if migrate_engine.name == 'mysql': meta = sa.MetaData(bind=migrate_engine) endpoint = sa.Table('endpoint', meta, autoload=True) # NOTE(i159): MySQL requires indexes on referencing columns, and those # indexes create automatically. That those indexes will have different # names, depending on version of MySQL used. We shoud make this naming # consistent, by reverting index name to a consistent condition. if any(i for i in endpoint.indexes if i.columns.keys() == ['service_id'] and i.name != 'service_id'): # NOTE(i159): by this action will be made re-creation of an index # with the new name. This can be considered as renaming under the # MySQL rules. sa.Index('service_id', endpoint.c.service_id).create() user_group_membership = sa.Table('user_group_membership', meta, autoload=True) if any(i for i in user_group_membership.indexes if i.columns.keys() == ['group_id'] and i.name != 'group_id'): sa.Index('group_id', user_group_membership.c.group_id).create()
[docs]def downgrade(migrate_engine): # NOTE(i159): index exists only in MySQL schemas, and got an inconsistent # name only when MySQL 5.5 renamed it after re-creation # (during migrations). So we just fixed inconsistency, there is no # necessity to revert it. pass