35 lines
1.4 KiB
Python
35 lines
1.4 KiB
Python
# Copyright 2021 Red Hat, Inc.
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# All Rights Reserved.
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#
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# 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 sqlalchemy as sa
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def upgrade(migrate_engine):
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"""Update volumes and snapshots tables with use_quota field.
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Add use_quota field to both volumes and snapshots table to fast and easily
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identify resources that must be counted for quota usages.
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"""
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# Existing resources will be left with None value to allow rolling upgrades
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# with the online data migration pattern, since they will identify the
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# resources that don't have the field set/known yet.
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meta = sa.MetaData(bind=migrate_engine)
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for table_name in ('volumes', 'snapshots'):
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table = sa.Table(table_name, meta, autoload=True)
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if not hasattr(table.c, 'use_quota'):
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column = sa.Column('use_quota', sa.Boolean, nullable=True)
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table.create_column(column)
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