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__all__ = ['models', 'db_from_config', 'setup_session']
import sqlalchemy
import sqlalchemy.orm
import ConfigParser
def db_from_config(cfile):
cp = ConfigParser.ConfigParser()
cp.read([cfile])
driver = cp.get('snapshots', 'driver')
if driver == 'sqlite':
path = cp.get('snapshots', 'database')
return 'sqlite:///%s' % path
elif driver in ['mysql', 'postgres']:
user = cp.get('snapshots', 'user')
password = cp.get('snapshots', 'password')
host = cp.get('snapshots', 'host')
db = cp.get('snapshots', 'database')
return '%s://%s:%s@%s/%s' % (driver, user, password, host, db)
else:
raise Exception("unsupported db driver %s" % driver)
def setup_session(cfile, debug=False):
engine = sqlalchemy.create_engine(db_from_config(cfile),
echo=debug)
Session = sqlalchemy.orm.sessionmaker()
Session.configure(bind=engine)
return Session()
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