59 lines
1.7 KiB
Python
59 lines
1.7 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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"""Add enum 'consistent_snapshot_support' attr to 'share_groups' model.
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Revision ID: d5db24264f5c
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Revises: 927920b37453
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Create Date: 2017-02-03 15:59:31.134166
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"""
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# revision identifiers, used by Alembic.
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revision = 'd5db24264f5c'
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down_revision = '927920b37453'
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from alembic import op
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import sqlalchemy as sa
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SG_TABLE_NAME = 'share_groups'
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ATTR_NAME = 'consistent_snapshot_support'
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ENUM_POOL_VALUE = 'pool'
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ENUM_HOST_VALUE = 'host'
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def upgrade():
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# Workaround for following alembic bug:
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# https://bitbucket.org/zzzeek/alembic/issue/89
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context = op.get_context()
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if context.bind.dialect.name == 'postgresql':
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op.execute(
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"CREATE TYPE %s AS ENUM ('%s', '%s')" % (
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ATTR_NAME, ENUM_POOL_VALUE, ENUM_HOST_VALUE))
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op.add_column(
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SG_TABLE_NAME,
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sa.Column(
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ATTR_NAME,
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sa.Enum(ENUM_POOL_VALUE, ENUM_HOST_VALUE, name=ATTR_NAME),
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nullable=True,
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),
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)
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def downgrade():
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op.drop_column(SG_TABLE_NAME, ATTR_NAME)
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context = op.get_context()
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if context.bind.dialect.name == 'postgresql':
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op.execute('DROP TYPE %s' % ATTR_NAME)
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