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# Copyright (C) 2017 Jan Jancar
#
# This file is a part of the Mailman PGP plugin.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.
""""""
from contextlib import contextmanager
from mailman.config import config as mailman_config
from mailman.utilities.string import expand
from public import public
from sqlalchemy import create_engine
from sqlalchemy.orm import scoped_session, sessionmaker
from mailman_pgp.config import config
from mailman_pgp.model.base import Base
@public
class Database:
def __init__(self):
url = config.get('db', 'url')
self._url = expand(url, None, mailman_config.paths)
self.engine = create_engine(self._url)
self._scoped_session = scoped_session(sessionmaker(bind=self.engine))
Base.metadata.create_all(self.engine)
self.session.commit()
@property
def session(self):
return self._scoped_session()
@public
@contextmanager
def transaction():
try:
yield config.db.session
except:
config.db.session.rollback()
raise
else:
config.db.session.commit()
@public
def query(cls):
return config.db.session.query(cls)
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