71 lines
2.3 KiB
Python
71 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Objectif Libre
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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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#
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# @author: Stéphane Albert
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#
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import os
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import alembic
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from alembic import config as alembic_config
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ALEMBIC_INI_PATH = os.path.join(os.path.dirname(__file__), 'alembic.ini')
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def load_alembic_config(repo_path, ini_path=ALEMBIC_INI_PATH):
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if not os.path.exists(repo_path):
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raise Exception('Repo path (%s) not found.' % repo_path)
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if not os.path.exists(ini_path):
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raise Exception('Ini path (%s) not found.' % ini_path)
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config = alembic_config.Config(ini_path)
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config.set_main_option('script_location', repo_path)
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return config
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def upgrade(config, version):
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return alembic.command.upgrade(config, version or 'head')
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def downgrade(config, version):
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if isinstance(version, int) or version is None or version.isdigit():
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version = 'base'
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return alembic.command.downgrade(config, version)
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def version(config):
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return alembic.command.current(config)
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def revision(config, message='', autogenerate=False):
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"""Creates template for migration.
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:param message: Text that will be used for migration title
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:type message: string
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:param autogenerate: If True - generates diff based on current database
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state
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:type autogenerate: bool
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"""
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return alembic.command.revision(config, message=message,
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autogenerate=autogenerate)
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def stamp(config, revision):
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"""Stamps database with provided revision.
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:param revision: Should match one from repository or head - to stamp
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database with most recent revision
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:type revision: string
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"""
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return alembic.command.stamp(config, revision=revision)
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