![Joe Gordon](/assets/img/avatar_default.png)
* Explain these docs are for trunk (copied from ironic) * All the docs in this repo are meant to be developer docs, so having a devref inside of the docs is redundant and just makes the docs more complicated to navigate. Move everything out of the devref folder and link to everything from main index. * Move man pages into separate section. The man pages are pretty sparse * right now, we should either make them useful or just delete them * Remove dead docs from unused_docs list in doc/source/conf.py * Shuffle docs landing page, move common referees to the top (API, hypervisor support matrix), Add a introduction section and more. The hope is the updated layout makes this document easier to navigate. * Use maxdepth of 1 * Rename a few sections with what are hopefully better names The next step is to prune out outdated documents and further cleanup this page. Change-Id: Iff453e47ccc902a0e72b1a5f6ce1ee939ff3a1a0
50 lines
1.8 KiB
ReStructuredText
50 lines
1.8 KiB
ReStructuredText
Internationalization
|
|
====================
|
|
|
|
Nova uses the `oslo.i18n library
|
|
<http://docs.openstack.org/developer/oslo.i18n/index.html>`_ to support
|
|
internationalization. The oslo.i18n library is built on top of `gettext
|
|
<http://docs.python.org/library/gettext.html>`_ and provides functions that are
|
|
used to enable user-facing strings such as log messages to appear in the
|
|
appropriate language in different locales.
|
|
|
|
Nova exposes the oslo.i18n library support via the ``nova/i18n.py`` integration
|
|
module. This module provides the functions needed to wrap translatable strings.
|
|
It provides the ``_()`` wrapper for general user-facing messages and specific
|
|
wrappers for messages used only for logging. DEBUG level messages do not need
|
|
translation but CRITICAL, ERROR, WARNING and INFO messages should be wrapped
|
|
with ``_LC()``, ``_LE()``, ``_LW()`` or ``_LI()`` respectively.
|
|
|
|
For example::
|
|
|
|
LOG.debug("block_device_mapping %(mapping)s",
|
|
{'mapping': block_device_mapping})
|
|
|
|
or::
|
|
|
|
LOG.warn(_LW('Unknown base file %(img)s'), {'img': img})
|
|
|
|
You should use the basic wrapper ``_()`` for strings which are not log
|
|
messages::
|
|
|
|
raise nova.SomeException(_('Invalid service catalogue'))
|
|
|
|
Do not use ``locals()`` for formatting messages because:
|
|
1. It is not as clear as using explicit dicts.
|
|
2. It could produce hidden errors during refactoring.
|
|
3. Changing the name of a variable causes a change in the message.
|
|
4. It creates a lot of otherwise unused variables.
|
|
|
|
If you do not follow the project conventions, your code may cause hacking
|
|
checks to fail.
|
|
|
|
The ``_()``, ``_LC()``, ``_LE()``, ``_LW()`` and ``_LI()`` functions can be
|
|
imported with::
|
|
|
|
from nova.i18n import _
|
|
from nova.i18n import _LC
|
|
from nova.i18n import _LE
|
|
from nova.i18n import _LW
|
|
from nova.i18n import _LI
|
|
|