66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
# Copyright (c) 2016 Clinton Knight. 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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"""add_revert_to_snapshot_support
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Revision ID: 87ce15c59bbe
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Revises: 95e3cf760840
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Create Date: 2016-08-18 00:12:34.587018
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"""
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# revision identifiers, used by Alembic.
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revision = '87ce15c59bbe'
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down_revision = '95e3cf760840'
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from alembic import op
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import sqlalchemy as sa
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def upgrade():
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"""Performs DB upgrade to add revert_to_snapshot_support.
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Add attribute 'revert_to_snapshot_support' to Share model.
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"""
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with sa.orm.Session(bind=op.get_bind()) as session:
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# Add create_share_from_snapshot_support attribute to shares table
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op.add_column(
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'shares',
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sa.Column('revert_to_snapshot_support', sa.Boolean, default=False))
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# Set revert_to_snapshot_support on each share
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shares_table = sa.Table(
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'shares',
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sa.MetaData(),
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sa.Column('id', sa.String(length=36)),
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sa.Column('deleted', sa.String(length=36)),
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sa.Column('revert_to_snapshot_support', sa.Boolean),
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)
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# pylint: disable=no-value-for-parameter
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update = shares_table.update().where(
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shares_table.c.deleted == 'False').values(
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revert_to_snapshot_support=False)
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session.execute(update)
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session.commit()
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def downgrade():
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"""Performs DB downgrade removing revert_to_snapshot_support.
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Remove attribute 'revert_to_snapshot_support' from Share model.
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"""
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op.drop_column('shares', 'revert_to_snapshot_support')
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