57c4e9b6c6
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
129 lines
3.8 KiB
Python
Executable File
129 lines
3.8 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# Copyright 2011 OpenStack LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Glance Management Utility
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"""
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# FIXME(sirp): When we have glance-admin we can consider merging this into it
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# Perhaps for consistency with Nova, we would then rename glance-admin ->
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# glance-manage (or the other way around)
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import gettext
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import os
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import sys
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# If ../glance/__init__.py exists, add ../ to Python search path, so that
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# it will override what happens to be installed in /usr/(local/)lib/python...
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possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
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os.pardir,
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os.pardir))
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if os.path.exists(os.path.join(possible_topdir, 'glance', '__init__.py')):
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sys.path.insert(0, possible_topdir)
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gettext.install('glance', unicode=1)
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from glance.common import cfg
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from glance.common import config
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from glance.common import exception
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import glance.registry.db
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import glance.registry.db.migration
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def do_db_version(conf, args):
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"""Print database's current migration level"""
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print glance.registry.db.migration.db_version(conf)
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def do_upgrade(conf, args):
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"""Upgrade the database's migration level"""
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try:
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db_version = args[1]
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except IndexError:
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db_version = None
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glance.registry.db.migration.upgrade(conf, version=db_version)
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def do_downgrade(conf, args):
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"""Downgrade the database's migration level"""
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try:
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db_version = args[1]
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except IndexError:
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raise exception.MissingArgumentError(
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"downgrade requires a version argument")
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glance.registry.db.migration.downgrade(conf, version=db_version)
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def do_version_control(conf, args):
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"""Place a database under migration control"""
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glance.registry.db.migration.version_control(conf)
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def do_db_sync(conf, args):
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"""Place a database under migration control and upgrade"""
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try:
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db_version = args[1]
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except IndexError:
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db_version = None
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glance.registry.db.migration.db_sync(conf, version=db_version)
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def dispatch_cmd(conf, args):
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"""Search for do_* cmd in this module and then run it"""
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cmd = args[0]
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try:
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cmd_func = globals()['do_%s' % cmd]
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except KeyError:
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sys.exit("ERROR: unrecognized command '%s'" % cmd)
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try:
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cmd_func(conf, args)
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except exception.GlanceException, e:
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sys.exit("ERROR: %s" % e)
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def main():
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try:
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# We load the glance-registry config section because
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# sql_connection is only part of the glance registry.
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default_config_files = \
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cfg.find_config_files(project='glance', prog='glance-registry')
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conf = \
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config.GlanceConfigOpts(default_config_files=default_config_files,
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usage="%prog [options] <cmd>")
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glance.registry.db.add_options(conf)
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args = conf()
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config.setup_logging(conf)
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except RuntimeError, e:
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sys.exit("ERROR: %s" % e)
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if not args:
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conf.print_usage()
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sys.exit(1)
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dispatch_cmd(conf, args)
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if __name__ == '__main__':
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main()
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