32 lines
1.1 KiB
Python
32 lines
1.1 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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from sqlalchemy import Column
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from sqlalchemy import MetaData
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from sqlalchemy import Table
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from sqlalchemy import Text
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BASE_TABLE_NAME = 'instance_extra'
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NEW_COLUMN_NAME = 'vpmems'
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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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for prefix in ('', 'shadow_'):
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table = Table(prefix + BASE_TABLE_NAME, meta, autoload=True)
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new_column = Column(NEW_COLUMN_NAME, Text, nullable=True)
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if not hasattr(table.c, NEW_COLUMN_NAME):
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table.create_column(new_column)
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