8612fd048d
The Oslo libraries have moved all of their code out of the 'oslo' namespace package into per-library packages. The namespace package was retained during kilo for backwards compatibility, but will be removed by the liberty-2 milestone. This change removes the use of the namespace package, replacing it with the new package names. The patches in the libraries will be put on hold until application patches have landed, or L2, whichever comes first. At that point, new versions of the libraries without namespace packages will be released as a major version update. Please merge this patch, or an equivalent, before L2 to avoid problems with those library releases. Blueprint: remove-namespace-packages https://blueprints.launchpad.net/oslo-incubator/+spec/remove-namespace-packages Change-Id: I2a8caa859830b3416bfe54e4261dd3415ac5a76a
64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# Copyright 2012 OpenStack Foundation
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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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import os
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from oslo_utils import strutils
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class HookableMixin(object):
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"""Mixin so classes can register and run hooks."""
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_hooks_map = {}
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@classmethod
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def add_hook(cls, hook_type, hook_func):
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if hook_type not in cls._hooks_map:
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cls._hooks_map[hook_type] = []
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cls._hooks_map[hook_type].append(hook_func)
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@classmethod
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def run_hooks(cls, hook_type, *args, **kwargs):
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hook_funcs = cls._hooks_map.get(hook_type) or []
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for hook_func in hook_funcs:
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hook_func(*args, **kwargs)
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def env(*vars, **kwargs):
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"""Returns environment variables.
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Returns the first environment variable set
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if none are non-empty, defaults to '' or keyword arg default.
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"""
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for v in vars:
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value = os.environ.get(v, None)
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if value:
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return value
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return kwargs.get('default', '')
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# http://code.activestate.com/recipes/
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# 577257-slugify-make-a-string-usable-in-a-url-or-filename/
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def slugify(value):
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"""Converts a string usable in a url or filename.
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Normalizes string, converts to lowercase, removes non-alpha characters,
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and converts spaces to hyphens.
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From Django's "django/template/defaultfilters.py".
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Make use of strutils.to_slug from openstack common
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"""
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return strutils.to_slug(value, incoming=None, errors="strict")
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