41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
# Copyright (c) 2016 Mirantis, Inc.
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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 fixtures
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from glare.common import exception
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class BannedDBSchemaOperations(fixtures.Fixture):
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"""Ban some operations for migrations"""
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def __init__(self, banned_resources=None):
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super(BannedDBSchemaOperations, self).__init__()
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self._banned_resources = banned_resources or []
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@staticmethod
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def _explode(resource, op):
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raise exception.DBNotAllowed(
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'Operation %s.%s() is not allowed in a database migration' % (
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resource, op))
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def setUp(self):
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super(BannedDBSchemaOperations, self).setUp()
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for thing in self._banned_resources:
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self.useFixture(fixtures.MonkeyPatch(
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'sqlalchemy.%s.drop' % thing,
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lambda *a, **k: self._explode(thing, 'drop')))
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self.useFixture(fixtures.MonkeyPatch(
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'sqlalchemy.%s.alter' % thing,
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lambda *a, **k: self._explode(thing, 'alter')))
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