88 lines
3.5 KiB
Python
88 lines
3.5 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2007, 2008, 2009 by Jan Dittberner.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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# USA.
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#
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# Version: $Id$
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from sqlalchemy import MetaData, Table
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from sqlalchemy.orm import mapper, relation
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from sqlalchemy.exceptions import NoSuchTableError
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import sys
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import migrate.versioning.api
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import logging
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from gnuviechadmin.backend.BackendTo import Client, Sysuser, Domain, Record
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def dbsetup(config):
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logger = logging.getLogger(__name__)
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required_version = int(config['migrate.required_version'])
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try:
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dbversion = migrate.versioning.api.db_version(
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config['sqlalchemy.uri'], config['database.repository'])
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if dbversion < required_version:
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logger.info("""Database version is %d but required version \
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is %d. Trying automatic upgrade.""" % (dbversion, required_version))
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try:
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migrate.versioning.api.upgrade(
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config['sqlalchemy.uri'], config['database.repository'],
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required_version)
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except e:
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logger.error("Automatic upgrade failed.", e)
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raise
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elif dbversion > required_version:
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logger.error("""Database version is %d which is higher than \
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the required version %d. I cannot handle this situation without possible \
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data loss.""" % (dbversion, required_version))
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sys.exit(1)
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except NoSuchTableError, nste:
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logger.info("""The database is not versioned. \
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Trying automatic versioning.""")
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try:
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migrate.versioning.api.version_control(
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config['sqlalchemy.uri'], config['database.repository'])
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migrate.versioning.api.upgrade(
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config['sqlalchemy.uri'], config['database.repository'],
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required_version)
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except:
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logger.error("Automatic setup failed.")
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raise
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meta = MetaData(config['sqlalchemy.uri'])
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meta.bind.engine.echo = config['sqlalchemy.echo']
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dbschema = None
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if 'database.schema' in config:
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dbschema = config['database.schema']
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(client_table, sysuser_table, domain_table, \
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record_table, supermaster_table, mailaccount_table, \
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mailaddress_table, mailtarget_table) = \
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[Table(tabname, meta, schema = dbschema,
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autoload = True) for tabname in \
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('client', 'sysuser', 'domain', 'record',
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'supermaster', 'mailaccount', 'mailaddress', 'mailtarget')]
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client_mapper = mapper(Client, client_table, {
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'sysusers': relation(Sysuser, backref = 'client')})
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sysuser_mapper = mapper(Sysuser, sysuser_table, {
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'domains': relation(Domain, backref = 'sysuser')})
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domain_mapper = mapper(Domain, domain_table, {
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'records': relation(Record, cascade = 'all',
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backref = 'domain')})
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record_mapper = mapper(Record, record_table)
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