Chris Dent ea8a0f6a8b Add support for looking in environment for config ... An _environment source is added that looks in os.environ for values. Using the environment is on by default, but can be shut down by setting `use_env` to False when __call__ is called. The enviroment is inspected before any other sources of config data but the value is used after command line arguments and before config file options. This is done by checking both the command line and config files and then inspecting the location of the result. If it is command_line, we use it. If not, we use the environment value (if any). If there's no environment value, the config file value is used. If checking the command line and config file results in a KeyError, the environment value is used, if set. The names of the environment variables follow the rules described in oslo_config.sources._environment. A new exception has been added: ConfigSourceValueError, this is the superclass of the existing ConfigFileValueError. The code in _do_get has been updated to only use ConfigFileValueError when it is in fact a file from whence a ValueError came. Documentation has been updated and a rlease note created to indicate the new functionality. Change-Id: I3245c40ebdcc96f8e3b2dc0bab3b4aa71d07ad15		2018-10-17 20:49:05 +01:00
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sources	Add support for looking in environment for config	2018-10-17 20:49:05 +01:00
tests	Add support for looking in environment for config	2018-10-17 20:49:05 +01:00
__init__.py	Move files out of the namespace package	2014-12-12 16:13:29 -05:00
_i18n.py	Update URLs in documents according to document migration	2017-07-12 22:32:03 +08:00
_list_opts.py	ensure we do not modify private data from drivers	2018-07-17 12:35:13 -04:00
cfg.py	Add support for looking in environment for config	2018-10-17 20:49:05 +01:00
cfgfilter.py	Fix typo 'importopt' to 'import_opt' adding the missing _	2018-04-06 17:47:17 +02:00
fixture.py	track config file and command line locations for user settings	2018-03-15 10:14:03 -04:00
generator.py	Provide descriptions for choices	2017-12-13 14:33:03 +00:00
iniparser.py	Move files out of the namespace package	2014-12-12 16:13:29 -05:00
sphinxconfiggen.py	sphinxconfiggen to generate multiple sample files	2016-05-11 17:06:00 -05:00
sphinxext.py	sphinxext: Stop emitting lines multiple times	2018-08-03 11:27:50 -04:00
types.py	Properly initialize HostAddress	2018-05-07 22:21:17 +00:00
version.py	pbr.version.VersionInfo needs package name (oslo.xyz and not oslo_xyz)	2017-02-06 12:49:23 -05:00