config.py 文件源码

def parse_args(argv, default_config_files=None, configure_db=True,
               init_rpc=True):
    log.register_options(CONF)
    # We use the oslo.log default log levels which includes suds=INFO
    # and add only the extra levels that Nova needs
    log.set_defaults(default_log_levels=log.get_default_log_levels() +
                     _EXTRA_DEFAULT_LOG_LEVELS)
    options.set_defaults(CONF, connection=_DEFAULT_SQL_CONNECTION,
                         sqlite_db='nova.sqlite')
    rpc.set_defaults(control_exchange='nova')
    cache.configure(CONF)
    config.set_middleware_defaults()

    CONF(argv[1:],
         project='nova',
         version=version.version_string(),
         default_config_files=default_config_files)

    if init_rpc:
        rpc.init(CONF)

    if configure_db:
        sqlalchemy_api.configure(CONF)