7cfb0388ff
The gettext.install() function installs a builtin _() function which
translates a string in the translation domain supplied to the install()
function. If gettext.install() is called multiple times, it's the last
call to the function which wins and the last supplied translation domain
which is used e.g.
>>> import os
>>> os.environ['LANG'] = 'ja.UTF-8'
>>> import gettext
>>> gettext.install('keystone', unicode=1, localedir='/opt/stack/keystone/keystone/locale')
>>> print _('Invalid syslog facility')
n無効な syslog ファシリティ
>>> gettext.install('cinder', unicode=1, localedir='/opt/stack/nova/cinder/locale')
>>> print _('Invalid syslog facility')
Invalid syslog facility
Usually this function is called early on in a toplevel script and we
assume that no other code will call it and override the installed _().
However, in Cinder, we have taken a shortcut to avoid having to call it
explicitly from each script and instead call it from cinder/__init__.py.
This shortcut would be perfectly fine if we were absolutely sure that
nova modules would never be imported from another program. It's probably
quite incorrect for a program to use cinder code (indeed, if we wanted
to support this, Cinder code shouldn't use the default _() function) but
nevertheless there are some corner cases where it happens. For example,
the keystoneclient auth_token middleware tries to import cfg from
cinder.openstack and this in turn causes gettext.install('cinder') in
other projects like glance or quantum.
To avoid any doubt here, let's just rip out the shortcut and always
call gettext.install() from the top-level script.
However, there's a bit of an annoying detail here - by default,
nosetests starts in the current directly and tries to import all modules
it finds to look for tests. Without the _() builtin installed, importing
some modules like cinder.flags will fail.
Since it only ever makes sense to load tests from the cinder/tests dir,
we can ask nose to do that by using the --tests argument via setup.cfg.
Note, this means that if you previously did this:
$> tox -- cinder.tests.foo cinder.tests.bar
then you must now do this:
$> tox -- --tests cinder.tests.foo,cinder.tests.bar
Change-Id: If4125d6bcbde63df95de129ac5c83b4a6d6f130a
71 lines
2.2 KiB
Python
Executable File
71 lines
2.2 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack, LLC
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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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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Starter script for All cinder services.
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This script attempts to start all the cinder services in one process. Each
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service is started in its own greenthread. Please note that exceptions and
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sys.exit() on the starting of a service are logged and the script will
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continue attempting to launch the rest of the services.
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"""
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import eventlet
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eventlet.monkey_patch()
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import gettext
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import os
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import sys
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possible_topdir = os.path.normpath(os.path.join(os.path.abspath(
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sys.argv[0]), os.pardir, os.pardir))
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if os.path.exists(os.path.join(possible_topdir, "cinder", "__init__.py")):
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sys.path.insert(0, possible_topdir)
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gettext.install('cinder', unicode=1)
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from cinder import flags
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from cinder.openstack.common import log as logging
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from cinder import service
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from cinder import utils
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if __name__ == '__main__':
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flags.parse_args(sys.argv)
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logging.setup("cinder")
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LOG = logging.getLogger('cinder.all')
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utils.monkey_patch()
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servers = []
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# cinder-api
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try:
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servers.append(service.WSGIService('osapi_volume'))
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except (Exception, SystemExit):
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LOG.exception(_('Failed to load osapi_volume'))
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for binary in ['cinder-volume', 'cinder-scheduler']:
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try:
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servers.append(service.Service.create(binary=binary))
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except (Exception, SystemExit):
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LOG.exception(_('Failed to load %s'), binary)
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service.serve(*servers)
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service.wait()
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