Sync oslo-incubator for py33 fixes
Change-Id: I261ec6bb34b29169ba3547305deab051f85a3d4d
This commit is contained in:
Dean Troyer
parent
bca4cf9578
commit
fa649f4654
@ -1,8 +1,8 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Red Hat, Inc.
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# All Rights Reserved.
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# Copyright 2013 IBM Corp.
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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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@ -26,22 +26,46 @@ Usual usage in an openstack.common module:
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import copy
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import gettext
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import logging.handlers
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import logging
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import os
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import re
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import UserString
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try:
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import UserString as _userString
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except ImportError:
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import collections as _userString
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from babel import localedata
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import six
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_localedir = os.environ.get('openstackclient'.upper() + '_LOCALEDIR')
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_t = gettext.translation('openstackclient', localedir=_localedir, fallback=True)
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_AVAILABLE_LANGUAGES = {}
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USE_LAZY = False
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def enable_lazy():
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"""Convenience function for configuring _() to use lazy gettext
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Call this at the start of execution to enable the gettextutils._
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function to use lazy gettext functionality. This is useful if
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your project is importing _ directly instead of using the
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gettextutils.install() way of importing the _ function.
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"""
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global USE_LAZY
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USE_LAZY = True
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def _(msg):
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return _t.ugettext(msg)
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if USE_LAZY:
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return Message(msg, 'openstackclient')
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else:
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if six.PY3:
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return _t.gettext(msg)
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return _t.ugettext(msg)
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def install(domain):
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def install(domain, lazy=False):
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"""Install a _() function using the given translation domain.
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Given a translation domain, install a _() function using gettext's
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@ -51,52 +75,60 @@ def install(domain):
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overriding the default localedir (e.g. /usr/share/locale) using
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a translation-domain-specific environment variable (e.g.
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NOVA_LOCALEDIR).
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:param domain: the translation domain
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:param lazy: indicates whether or not to install the lazy _() function.
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The lazy _() introduces a way to do deferred translation
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of messages by installing a _ that builds Message objects,
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instead of strings, which can then be lazily translated into
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any available locale.
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"""
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gettext.install(domain,
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localedir=os.environ.get(domain.upper() + '_LOCALEDIR'),
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unicode=True)
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if lazy:
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# NOTE(mrodden): Lazy gettext functionality.
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#
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# The following introduces a deferred way to do translations on
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# messages in OpenStack. We override the standard _() function
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# and % (format string) operation to build Message objects that can
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# later be translated when we have more information.
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#
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# Also included below is an example LocaleHandler that translates
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# Messages to an associated locale, effectively allowing many logs,
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# each with their own locale.
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def _lazy_gettext(msg):
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"""Create and return a Message object.
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Lazy gettext function for a given domain, it is a factory method
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for a project/module to get a lazy gettext function for its own
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translation domain (i.e. nova, glance, cinder, etc.)
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Message encapsulates a string so that we can translate
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it later when needed.
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"""
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return Message(msg, domain)
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from six import moves
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moves.builtins.__dict__['_'] = _lazy_gettext
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else:
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localedir = '%s_LOCALEDIR' % domain.upper()
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if six.PY3:
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gettext.install(domain,
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localedir=os.environ.get(localedir))
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else:
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gettext.install(domain,
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localedir=os.environ.get(localedir),
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unicode=True)
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"""
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Lazy gettext functionality.
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The following is an attempt to introduce a deferred way
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to do translations on messages in OpenStack. We attempt to
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override the standard _() function and % (format string) operation
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to build Message objects that can later be translated when we have
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more information. Also included is an example LogHandler that
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translates Messages to an associated locale, effectively allowing
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many logs, each with their own locale.
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"""
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def get_lazy_gettext(domain):
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"""Assemble and return a lazy gettext function for a given domain.
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Factory method for a project/module to get a lazy gettext function
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for its own translation domain (i.e. nova, glance, cinder, etc.)
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"""
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def _lazy_gettext(msg):
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"""Create and return a Message object.
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Message encapsulates a string so that we can translate it later when
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needed.
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"""
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return Message(msg, domain)
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return _lazy_gettext
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class Message(UserString.UserString, object):
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class Message(_userString.UserString, object):
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"""Class used to encapsulate translatable messages."""
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def __init__(self, msg, domain):
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# _msg is the gettext msgid and should never change
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self._msg = msg
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self._left_extra_msg = ''
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self._right_extra_msg = ''
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self._locale = None
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self.params = None
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self.locale = None
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self.domain = domain
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@property
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@ -116,8 +148,13 @@ class Message(UserString.UserString, object):
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localedir=localedir,
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fallback=True)
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if six.PY3:
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ugettext = lang.gettext
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else:
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ugettext = lang.ugettext
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full_msg = (self._left_extra_msg +
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lang.ugettext(self._msg) +
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ugettext(self._msg) +
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self._right_extra_msg)
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if self.params is not None:
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@ -125,12 +162,39 @@ class Message(UserString.UserString, object):
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return six.text_type(full_msg)
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@property
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def locale(self):
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return self._locale
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@locale.setter
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def locale(self, value):
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self._locale = value
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if not self.params:
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return
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# This Message object may have been constructed with one or more
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# Message objects as substitution parameters, given as a single
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# Message, or a tuple or Map containing some, so when setting the
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# locale for this Message we need to set it for those Messages too.
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if isinstance(self.params, Message):
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self.params.locale = value
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return
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if isinstance(self.params, tuple):
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for param in self.params:
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if isinstance(param, Message):
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param.locale = value
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return
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if isinstance(self.params, dict):
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for param in self.params.values():
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if isinstance(param, Message):
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param.locale = value
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def _save_dictionary_parameter(self, dict_param):
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full_msg = self.data
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# look for %(blah) fields in string;
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# ignore %% and deal with the
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# case where % is first character on the line
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keys = re.findall('(?:[^%]|^)%\((\w*)\)[a-z]', full_msg)
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keys = re.findall('(?:[^%]|^)?%\((\w*)\)[a-z]', full_msg)
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# if we don't find any %(blah) blocks but have a %s
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if not keys and re.findall('(?:[^%]|^)%[a-z]', full_msg):
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@ -143,7 +207,7 @@ class Message(UserString.UserString, object):
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params[key] = copy.deepcopy(dict_param[key])
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except TypeError:
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# cast uncopyable thing to unicode string
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params[key] = unicode(dict_param[key])
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params[key] = six.text_type(dict_param[key])
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return params
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@ -162,7 +226,7 @@ class Message(UserString.UserString, object):
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try:
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self.params = copy.deepcopy(other)
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except TypeError:
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self.params = unicode(other)
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self.params = six.text_type(other)
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return self
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@ -171,11 +235,13 @@ class Message(UserString.UserString, object):
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return self.data
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def __str__(self):
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if six.PY3:
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return self.__unicode__()
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return self.data.encode('utf-8')
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def __getstate__(self):
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to_copy = ['_msg', '_right_extra_msg', '_left_extra_msg',
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'domain', 'params', 'locale']
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'domain', 'params', '_locale']
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new_dict = self.__dict__.fromkeys(to_copy)
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for attr in to_copy:
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new_dict[attr] = copy.deepcopy(self.__dict__[attr])
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@ -229,7 +295,47 @@ class Message(UserString.UserString, object):
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if name in ops:
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return getattr(self.data, name)
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else:
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return UserString.UserString.__getattribute__(self, name)
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return _userString.UserString.__getattribute__(self, name)
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def get_available_languages(domain):
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"""Lists the available languages for the given translation domain.
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:param domain: the domain to get languages for
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"""
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if domain in _AVAILABLE_LANGUAGES:
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return copy.copy(_AVAILABLE_LANGUAGES[domain])
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localedir = '%s_LOCALEDIR' % domain.upper()
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find = lambda x: gettext.find(domain,
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localedir=os.environ.get(localedir),
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languages=[x])
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# NOTE(mrodden): en_US should always be available (and first in case
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# order matters) since our in-line message strings are en_US
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language_list = ['en_US']
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# NOTE(luisg): Babel <1.0 used a function called list(), which was
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# renamed to locale_identifiers() in >=1.0, the requirements master list
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# requires >=0.9.6, uncapped, so defensively work with both. We can remove
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# this check when the master list updates to >=1.0, and all projects udpate
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list_identifiers = (getattr(localedata, 'list', None) or
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getattr(localedata, 'locale_identifiers'))
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locale_identifiers = list_identifiers()
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for i in locale_identifiers:
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if find(i) is not None:
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language_list.append(i)
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_AVAILABLE_LANGUAGES[domain] = language_list
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return copy.copy(language_list)
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def get_localized_message(message, user_locale):
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"""Gets a localized version of the given message in the given locale."""
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if isinstance(message, Message):
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if user_locale:
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message.locale = user_locale
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return six.text_type(message)
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else:
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return message
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class LocaleHandler(logging.Handler):
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@ -114,15 +114,12 @@ class InstallVenv(object):
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print('Installing dependencies with pip (this can take a while)...')
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# First things first, make sure our venv has the latest pip and
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# setuptools.
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self.pip_install('pip>=1.3')
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# setuptools and pbr
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self.pip_install('pip>=1.4')
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self.pip_install('setuptools')
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self.pip_install('pbr')
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self.pip_install('-r', self.requirements)
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self.pip_install('-r', self.test_requirements)
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def post_process(self):
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self.get_distro().post_process()
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self.pip_install('-r', self.requirements, '-r', self.test_requirements)
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def parse_args(self, argv):
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"""Parses command-line arguments."""
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@ -156,14 +153,6 @@ class Distro(InstallVenv):
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' requires virtualenv, please install it using your'
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' favorite package management tool' % self.project)
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def post_process(self):
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"""Any distribution-specific post-processing gets done here.
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In particular, this is useful for applying patches to code inside
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the venv.
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"""
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pass
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class Fedora(Distro):
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"""This covers all Fedora-based distributions.
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@ -175,10 +164,6 @@ class Fedora(Distro):
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return self.run_command_with_code(['rpm', '-q', pkg],
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check_exit_code=False)[1] == 0
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def apply_patch(self, originalfile, patchfile):
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self.run_command(['patch', '-N', originalfile, patchfile],
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check_exit_code=False)
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def install_virtualenv(self):
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if self.check_cmd('virtualenv'):
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return
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@ -187,26 +172,3 @@ class Fedora(Distro):
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self.die("Please install 'python-virtualenv'.")
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super(Fedora, self).install_virtualenv()
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def post_process(self):
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"""Workaround for a bug in eventlet.
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This currently affects RHEL6.1, but the fix can safely be
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applied to all RHEL and Fedora distributions.
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This can be removed when the fix is applied upstream.
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Nova: https://bugs.launchpad.net/nova/+bug/884915
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Upstream: https://bitbucket.org/eventlet/eventlet/issue/89
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RHEL: https://bugzilla.redhat.com/958868
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"""
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# Install "patch" program if it's not there
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if not self.check_pkg('patch'):
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self.die("Please install 'patch'.")
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# Apply the eventlet patch
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self.apply_patch(os.path.join(self.venv, 'lib', self.py_version,
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'site-packages',
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'eventlet/green/subprocess.py'),
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'contrib/redhat-eventlet.patch')
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