diff options
Diffstat (limited to 'keystone-moon/keystone/common/sql/migrate_repo/versions/062_drop_assignment_role_fk.py')
-rw-r--r-- | keystone-moon/keystone/common/sql/migrate_repo/versions/062_drop_assignment_role_fk.py | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/keystone-moon/keystone/common/sql/migrate_repo/versions/062_drop_assignment_role_fk.py b/keystone-moon/keystone/common/sql/migrate_repo/versions/062_drop_assignment_role_fk.py new file mode 100644 index 00000000..5a33486c --- /dev/null +++ b/keystone-moon/keystone/common/sql/migrate_repo/versions/062_drop_assignment_role_fk.py @@ -0,0 +1,41 @@ +# 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 keystone.common.sql import migration_helpers + + +def list_constraints(migrate_engine): + meta = sqlalchemy.MetaData() + meta.bind = migrate_engine + assignment_table = sqlalchemy.Table('assignment', meta, autoload=True) + role_table = sqlalchemy.Table('role', meta, autoload=True) + + constraints = [{'table': assignment_table, + 'fk_column': 'role_id', + 'ref_column': role_table.c.id}] + return constraints + + +def upgrade(migrate_engine): + # SQLite does not support constraints, and querying the constraints + # raises an exception + if migrate_engine.name == 'sqlite': + return + migration_helpers.remove_constraints(list_constraints(migrate_engine)) + + +def downgrade(migrate_engine): + if migrate_engine.name == 'sqlite': + return + migration_helpers.add_constraints(list_constraints(migrate_engine)) |