def __init__(self, hostname=None, port=None, max_disconnect_poll=30):
# Please leave this import here, db.py is imported during installation process
from indico.core.config import Config
cfg = Config.getInstance()
if not hostname:
hostname = cfg.getDBConnectionParams()[0]
if not port:
port = cfg.getDBConnectionParams()[1]
self._storage = ClientStorage((hostname, port),
username=cfg.getDBUserName(),
password=cfg.getDBPassword(),
realm=cfg.getDBRealm(),
max_disconnect_poll=max_disconnect_poll)
self._db = MigratedDB(self._storage)
self._conn = threading.local()
self._conn.conn = None
