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# Copyright 2015 Intel Corporation
# All Rights Reserved
#
# 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.
from migrate import UniqueConstraint
from sqlalchemy import MetaData, Table
def upgrade(migrate_engine):
meta = MetaData(bind=migrate_engine)
trusts = Table('trust', meta, autoload=True)
UniqueConstraint('trustor_user_id', 'trustee_user_id', 'project_id',
'impersonation', 'expires_at', table=trusts,
name='duplicate_trust_constraint').create()
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