48 lines
1.6 KiB
Python
48 lines
1.6 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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#
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"""Add Unique constraint on ('service_name', 'hostname') in the
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service_statuses table for bug #1768824"""
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import sys
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from migrate.changeset.constraint import UniqueConstraint
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from oslo_log import log as logging
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from sqlalchemy import exc
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from sqlalchemy.schema import MetaData
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from sqlalchemy.schema import Table
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LOG = logging.getLogger()
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EXPLANATION = """
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You need to manually remove duplicate entries from the database.
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The error message was:
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%s
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"""
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def upgrade(migrate_engine):
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meta = MetaData()
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meta.bind = migrate_engine
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service_statuses_table = Table('service_statuses', meta, autoload=True)
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# Add UniqueConstraint based on service_name and hostname.
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constraint = UniqueConstraint('service_name', 'hostname',
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table=service_statuses_table,
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name="unique_service_status")
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try:
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constraint.create()
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except exc.IntegrityError as e:
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LOG.error(EXPLANATION, e)
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# Use sys.exit so we don't blow up with a huge trace
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sys.exit(1)
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