Remove unused oslo-incubator modules
Magnum contains some unused modules in the openstack.common package. Remove them for reducing the number of supported code. Change-Id: Ib6b39a2955885ab3d1dfa71532556262a1a6adc7
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# Copyright 2011 OpenStack Foundation.
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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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"""Local storage of variables using weak references"""
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import threading
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import weakref
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class WeakLocal(threading.local):
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def __getattribute__(self, attr):
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rval = super(WeakLocal, self).__getattribute__(attr)
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if rval:
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# NOTE(mikal): this bit is confusing. What is stored is a weak
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# reference, not the value itself. We therefore need to lookup
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# the weak reference and return the inner value here.
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rval = rval()
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return rval
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def __setattr__(self, attr, value):
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value = weakref.ref(value)
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return super(WeakLocal, self).__setattr__(attr, value)
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# NOTE(mikal): the name "store" should be deprecated in the future
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store = WeakLocal()
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# A "weak" store uses weak references and allows an object to fall out of scope
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# when it falls out of scope in the code that uses the thread local storage. A
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# "strong" store will hold a reference to the object so that it never falls out
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# of scope.
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weak_store = WeakLocal()
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strong_store = threading.local()
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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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from oslo_concurrency import processutils
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def execute(*cmd, **kwargs):
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"""Convenience wrapper around oslo's execute() method."""
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return processutils.execute(*cmd, **kwargs)
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def trycmd(*args, **kwargs):
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"""Convenience wrapper around oslo's trycmd() method."""
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return processutils.trycmd(*args, **kwargs)
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# Copyright (c) 2013 OpenStack Foundation
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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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Helpers for comparing version strings.
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"""
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import copy
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import functools
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import inspect
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import logging
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from oslo_config import cfg
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import pkg_resources
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import six
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from magnum.openstack.common._i18n import _
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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deprecated_opts = [
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cfg.BoolOpt('fatal_deprecations',
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default=False,
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help='Enables or disables fatal status of deprecations.'),
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]
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def list_opts():
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"""Entry point for oslo.config-generator.
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"""
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return [(None, copy.deepcopy(deprecated_opts))]
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class deprecated(object):
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"""A decorator to mark callables as deprecated.
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This decorator logs a deprecation message when the callable it decorates is
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used. The message will include the release where the callable was
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deprecated, the release where it may be removed and possibly an optional
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replacement.
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Examples:
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1. Specifying the required deprecated release
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>>> @deprecated(as_of=deprecated.ICEHOUSE)
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... def a(): pass
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2. Specifying a replacement:
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>>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()')
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... def b(): pass
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3. Specifying the release where the functionality may be removed:
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>>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=+1)
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... def c(): pass
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4. Specifying the deprecated functionality will not be removed:
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>>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=0)
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... def d(): pass
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5. Specifying a replacement, deprecated functionality will not be removed:
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>>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()', remove_in=0)
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... def e(): pass
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"""
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# NOTE(morganfainberg): Bexar is used for unit test purposes, it is
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# expected we maintain a gap between Bexar and Folsom in this list.
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BEXAR = 'B'
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FOLSOM = 'F'
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GRIZZLY = 'G'
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HAVANA = 'H'
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ICEHOUSE = 'I'
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JUNO = 'J'
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KILO = 'K'
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LIBERTY = 'L'
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_RELEASES = {
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# NOTE(morganfainberg): Bexar is used for unit test purposes, it is
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# expected we maintain a gap between Bexar and Folsom in this list.
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'B': 'Bexar',
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'F': 'Folsom',
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'G': 'Grizzly',
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'H': 'Havana',
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'I': 'Icehouse',
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'J': 'Juno',
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'K': 'Kilo',
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'L': 'Liberty',
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}
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_deprecated_msg_with_alternative = _(
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'%(what)s is deprecated as of %(as_of)s in favor of '
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'%(in_favor_of)s and may be removed in %(remove_in)s.')
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_deprecated_msg_no_alternative = _(
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'%(what)s is deprecated as of %(as_of)s and may be '
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'removed in %(remove_in)s. It will not be superseded.')
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_deprecated_msg_with_alternative_no_removal = _(
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'%(what)s is deprecated as of %(as_of)s in favor of %(in_favor_of)s.')
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_deprecated_msg_with_no_alternative_no_removal = _(
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'%(what)s is deprecated as of %(as_of)s. It will not be superseded.')
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def __init__(self, as_of, in_favor_of=None, remove_in=2, what=None):
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"""Initialize decorator
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:param as_of: the release deprecating the callable. Constants
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are define in this class for convenience.
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:param in_favor_of: the replacement for the callable (optional)
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:param remove_in: an integer specifying how many releases to wait
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before removing (default: 2)
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:param what: name of the thing being deprecated (default: the
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callable's name)
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"""
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self.as_of = as_of
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self.in_favor_of = in_favor_of
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self.remove_in = remove_in
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self.what = what
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def __call__(self, func_or_cls):
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if not self.what:
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self.what = func_or_cls.__name__ + '()'
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msg, details = self._build_message()
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if inspect.isfunction(func_or_cls):
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@six.wraps(func_or_cls)
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def wrapped(*args, **kwargs):
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report_deprecated_feature(LOG, msg, details)
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return func_or_cls(*args, **kwargs)
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return wrapped
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elif inspect.isclass(func_or_cls):
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orig_init = func_or_cls.__init__
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# TODO(tsufiev): change `functools` module to `six` as
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# soon as six 1.7.4 (with fix for passing `assigned`
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# argument to underlying `functools.wraps`) is released
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# and added to the oslo-incubator requrements
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@functools.wraps(orig_init, assigned=('__name__', '__doc__'))
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def new_init(self, *args, **kwargs):
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report_deprecated_feature(LOG, msg, details)
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orig_init(self, *args, **kwargs)
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func_or_cls.__init__ = new_init
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return func_or_cls
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else:
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raise TypeError('deprecated can be used only with functions or '
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'classes')
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def _get_safe_to_remove_release(self, release):
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# TODO(dstanek): this method will have to be reimplemented once
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# when we get to the X release because once we get to the Y
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# release, what is Y+2?
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new_release = chr(ord(release) + self.remove_in)
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if new_release in self._RELEASES:
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return self._RELEASES[new_release]
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else:
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return new_release
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def _build_message(self):
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details = dict(what=self.what,
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as_of=self._RELEASES[self.as_of],
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remove_in=self._get_safe_to_remove_release(self.as_of))
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if self.in_favor_of:
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details['in_favor_of'] = self.in_favor_of
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if self.remove_in > 0:
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msg = self._deprecated_msg_with_alternative
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else:
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# There are no plans to remove this function, but it is
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# now deprecated.
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msg = self._deprecated_msg_with_alternative_no_removal
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else:
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if self.remove_in > 0:
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msg = self._deprecated_msg_no_alternative
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else:
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# There are no plans to remove this function, but it is
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# now deprecated.
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msg = self._deprecated_msg_with_no_alternative_no_removal
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return msg, details
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def is_compatible(requested_version, current_version, same_major=True):
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"""Determine whether `requested_version` is satisfied by
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`current_version`; in other words, `current_version` is >=
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`requested_version`.
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:param requested_version: version to check for compatibility
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:param current_version: version to check against
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:param same_major: if True, the major version must be identical between
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`requested_version` and `current_version`. This is used when a
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major-version difference indicates incompatibility between the two
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versions. Since this is the common-case in practice, the default is
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True.
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:returns: True if compatible, False if not
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"""
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requested_parts = pkg_resources.parse_version(requested_version)
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current_parts = pkg_resources.parse_version(current_version)
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if same_major and (requested_parts[0] != current_parts[0]):
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return False
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return current_parts >= requested_parts
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# Track the messages we have sent already. See
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# report_deprecated_feature().
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_deprecated_messages_sent = {}
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def report_deprecated_feature(logger, msg, *args, **kwargs):
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"""Call this function when a deprecated feature is used.
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If the system is configured for fatal deprecations then the message
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is logged at the 'critical' level and :class:`DeprecatedConfig` will
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be raised.
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Otherwise, the message will be logged (once) at the 'warn' level.
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:raises: :class:`DeprecatedConfig` if the system is configured for
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fatal deprecations.
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"""
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stdmsg = _("Deprecated: %s") % msg
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CONF.register_opts(deprecated_opts)
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if CONF.fatal_deprecations:
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logger.critical(stdmsg, *args, **kwargs)
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raise DeprecatedConfig(msg=stdmsg)
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# Using a list because a tuple with dict can't be stored in a set.
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sent_args = _deprecated_messages_sent.setdefault(msg, list())
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if args in sent_args:
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# Already logged this message, so don't log it again.
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return
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sent_args.append(args)
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logger.warn(stdmsg, *args, **kwargs)
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class DeprecatedConfig(Exception):
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message = _("Fatal call to deprecated config: %(msg)s")
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def __init__(self, msg):
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super(Exception, self).__init__(self.message % dict(msg=msg))
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