python类库 - oslo.config

#! /usr/bin/python
# -*- coding:utf-8 -*-

from oslo.config import cfg

OPTS = [
cfg.StrOpt('host',default='10.160.0.101',help=("remote database ip addr")),
cfg.IntOpt('port',default=3306,
help=("port that database service listens to. e.g 3306 for mysql,1521 for oracle")),
cfg.StrOpt('user',default='nova',help=("database user")),
cfg.StrOpt('passwd',default='',help=("database passwd for $user"),secret=True),
cfg.StrOpt('dbname',help=("database name")),
cfg.ListOpt('db_restrain_keys',default=['unique','primary',],help=("db_restrain_keys")),
cfg.BoolOpt('debug',default=False,help=("whether run in debug mode"))
]

ROOT_HELPER_OPTS = [
cfg.StrOpt('root_helper', default='sudo',help=('Root helper application.'))
]

def main():

try:
cfg.CONF(host='10.160.0.108')
except Exception:
print "Opts not registered"

cfg.CONF.register_opts(OPTS)
cfg.CONF.set_default(name='dbname',default='mysql')
cfg.CONF.host='10.160.0.119'
print cfg.CONF.debug
print cfg.CONF.host
print cfg.CONF.dbname

cfg.CONF.register_opts(ROOT_HELPER_OPTS,'Agent')
print cfg.CONF.Agent.root_helper

if __name__ == "__main__":
main()

[root@controller py-test]# python test_cfg.py
Opts not registered
False
10.160.0.119
mysql
['unique', 'primary']
sudo