diff options
Diffstat (limited to 'openstack/common')
| -rw-r--r-- | openstack/common/cfg.py | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/openstack/common/cfg.py b/openstack/common/cfg.py index 09f3b88..5a10b2d 100644 --- a/openstack/common/cfg.py +++ b/openstack/common/cfg.py @@ -1178,6 +1178,9 @@ class ConfigOpts(collections.Mapping): __import__(module_str) self._get_opt_info(name, group) + class _NoneValue(object): + pass + @__clear_cache def set_override(self, name, override, group=None): """Override an opt value. @@ -1190,6 +1193,8 @@ class ConfigOpts(collections.Mapping): :param group: an option OptGroup object or group name :raises: NoSuchOptError, NoSuchGroupError """ + if override is None: + override = self._NoneValue() opt_info = self._get_opt_info(name, group) opt_info['override'] = override @@ -1205,9 +1210,38 @@ class ConfigOpts(collections.Mapping): :param group: an option OptGroup object or group name :raises: NoSuchOptError, NoSuchGroupError """ + if default is None: + default = self._NoneValue() opt_info = self._get_opt_info(name, group) opt_info['default'] = default + @__clear_cache + def clear_override(self, name, group=None): + """Clear an override an opt value. + + Clear a previously set override of the command line, config file + and default values of a given option. + + :param name: the name/dest of the opt + :param group: an option OptGroup object or group name + :raises: NoSuchOptError, NoSuchGroupError + """ + opt_info = self._get_opt_info(name, group) + opt_info['override'] = None + + @__clear_cache + def clear_default(self, name, group=None): + """Clear an override an opt's default value. + + Clear a previously set override of the default value of given option. + + :param name: the name/dest of the opt + :param group: an option OptGroup object or group name + :raises: NoSuchOptError, NoSuchGroupError + """ + opt_info = self._get_opt_info(name, group) + opt_info['default'] = None + def _all_opt_infos(self): """A generator function for iteration opt infos.""" for info in self._opts.values(): @@ -1350,8 +1384,11 @@ class ConfigOpts(collections.Mapping): info = self._get_opt_info(name, group) default, opt, override = [info[k] for k in sorted(info.keys())] + def _convert_none(value): + return None if isinstance(value, self._NoneValue) else value + if override is not None: - return override + return _convert_none(override) values = [] if self._cparser is not None: @@ -1380,7 +1417,7 @@ class ConfigOpts(collections.Mapping): return values if default is not None: - return default + return _convert_none(default) return opt.default |