Implements blueprint cfg-global-object
Begin adopting cfg's global CONF object pattern rather than passing
a conf object around everywhere.
This iterations does just enough to have each of the glance programs
initialize CONF and get the unit tests working.
Change-Id: Ia34959b3ba52cbe933d5d347f31319271b2e14f9
The changes here are substantial and widespread, but in summary:
- We use cfg to parse the CLI and config files, rather than optparse
and PasteDeploy
- A schema is defined for all configuration options close to the code
which uses the option
- 2 ConfigOpts sub-classes are added to config.py basically just
defining how to find config files; this means we can now use e.g.
glance.conf for base config values which glance-api.conf can
override
- load_paste_app() is changed to load the paste app from the last
config file in the stack and pass the app the ConfigOpts instance
- The generic app and filter factories in wsgi.py are modified to
pass a ConfigOpts instance to the apps and filters
- A ConfigOpts subclass is added for the unit tests which writes out
config values to a temporary config file and uses cfg to parse that
I've tried to keep the switch as unobtrusive as possible leaving further
cleanups for later e.g.
- Moving PasteDeploy config out of the config files - I think it would
be good to aim for having users modify the PasteDeploy config files
only in fairly rare circumstances. To achieve this, we might define
a number of common pipelines in the PasteDeploy config and allow
the user to choose between those pipelines in the glance config.
- We should add help strings to all the opts, even just for the sake
of documenting them
- We should move a bunch of the options into groups - e.g. all the
rabbit options
- We no longer rely on config files for default values, so the default
config files could contain nothing but comments - i.e. explaining
each option and showing what the default for it is - making it
obvious where a user has explicitly set a value
There are a couple of behavioural changes which I don't think are
signifcant but are worth mentioning:
- We used to support passing a config file as a positional argument
but don't anymore; AFAICT, it was only used by glance-manage when
launching servers and I've changed that to pass --config-file
- log_opt_values() doesn't log unknown opts, so won't log any values
for opts which get registered at runtime later
Change-Id: Iafa998a2a8d860f1ad57e2cd2afee69686ed58ba
Added gettext.install to glance endpoints, setup.py, and run_tests.py. Wrapped all exceptions in common/exception.py with gettext.
Included fix for bug lp:823676.
Change-Id: Ied4381e1676227afea857acd01f4754e6a181106