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Needed-By: I1ac1a06931c8b6dd7c2e73620a0302c29e605f03
Change-Id: I81894aea69b9d09b0977039623c26781093a397a
This commit is contained in:
Andreas Jaeger 2017-04-17 19:38:14 +02:00
parent 37d1a0f6c3
commit c42fcbead3
63 changed files with 13 additions and 5038 deletions
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.coveragerc
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[run]
branch = True
source = oslo_middleware
omit = oslo_middleware/tests/*
[report]
ignore_errors = True
precision = 2

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.gitignore vendored
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*.py[cod]
# C extensions
*.so
# Packages
*.egg
*.egg-info
dist
build
eggs
parts
bin
var
sdist
develop-eggs
.installed.cfg
lib
lib64
# Installer logs
pip-log.txt
# Unit test / coverage reports
.coverage
cover
.tox
nosetests.xml
.testrepository
# Translations
*.mo
# Mr Developer
.mr.developer.cfg
.project
.pydevproject
# Complexity
output/*.html
output/*/index.html
# Sphinx
doc/build
# pbr generates these
AUTHORS
ChangeLog
# Editors
*~
.*.swp

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.gitreview
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[gerrit]
host=review.openstack.org
port=29418
project=openstack/oslo.middleware.git

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.mailmap
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# Format is:
# <preferred e-mail> <other e-mail 1>
# <preferred e-mail> <other e-mail 2>

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.testr.conf
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[DEFAULT]
test_command=OS_STDOUT_CAPTURE=${OS_STDOUT_CAPTURE:-1} \
OS_STDERR_CAPTURE=${OS_STDERR_CAPTURE:-1} \
OS_TEST_TIMEOUT=${OS_TEST_TIMEOUT:-60} \
${PYTHON:-python} -m subunit.run discover -t ./ . $LISTOPT $IDOPTION
test_id_option=--load-list $IDFILE
test_list_option=--list

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CONTRIBUTING.rst
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If you would like to contribute to the development of OpenStack,
you must follow the steps in this page:
http://docs.openstack.org/infra/manual/developers.html
Once those steps have been completed, changes to OpenStack
should be submitted for review via the Gerrit tool, following
the workflow documented at:
http://docs.openstack.org/infra/manual/developers.html#development-workflow
Pull requests submitted through GitHub will be ignored.
Bugs should be filed on Launchpad, not GitHub:
https://bugs.launchpad.net/oslo.middleware

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HACKING.rst
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oslo.middleware Style Commandments
==================================
Read the OpenStack Style Commandments http://docs.openstack.org/developer/hacking/

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LICENSE
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README.rst
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===================================
oslo.middleware
===================================
.. image:: https://img.shields.io/pypi/v/oslo.middleware.svg
:target: https://pypi.python.org/pypi/oslo.middleware/
:alt: Latest Version
.. image:: https://img.shields.io/pypi/dm/oslo.middleware.svg
:target: https://pypi.python.org/pypi/oslo.middleware/
:alt: Downloads
Oslo middleware library includes components that can be injected into
wsgi pipelines to intercept request/response flows. The base class can be
enhanced with functionality like add/delete/modification of http headers
and support for limiting size/connection etc.
* Free software: Apache license
* Documentation: http://docs.openstack.org/developer/oslo.middleware
* Source: http://git.openstack.org/cgit/openstack/oslo.middleware
* Bugs: http://bugs.launchpad.net/oslo.middleware

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README.txt Normal file
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This project is no longer maintained.
The contents of this repository are still available in the Git
source code management system. To see the contents of this
repository before it reached its end of life, please check out the
previous commit with "git checkout HEAD^1".
Use instead the project deb-python-oslo.middleware at
http://git.openstack.org/cgit/openstack/deb-python-oslo.middleware .
For any further questions, please email
openstack-dev@lists.openstack.org or join #openstack-dev on
Freenode.

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babel.cfg
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[python: **.py]

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doc/source/api.rst
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=====
API
=====
.. automodule:: oslo_middleware
:members:
Configuration Options
=====================
RequestBodySizeLimiter
~~~~~~~~~~~~~~~~~~~~~~
.. show-options:: oslo.middleware.sizelimit
SSLMiddleware
~~~~~~~~~~~~~
.. show-options:: oslo.middleware.ssl

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doc/source/conf.py
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# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import sys
sys.path.insert(0, os.path.abspath('../..'))
# -- General configuration ----------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
extensions = [
'sphinx.ext.autodoc',
#'sphinx.ext.intersphinx',
'oslosphinx',
'oslo_config.sphinxext',
'stevedore.sphinxext',
]
# autodoc generation is a bit aggressive and a nuisance when doing heavy
# text edit cycles.
# execute "export SPHINX_DEBUG=1" in your terminal to disable
# The suffix of source filenames.
source_suffix = '.rst'
# The master toctree document.
master_doc = 'index'
# General information about the project.
project = u'oslo.middleware'
copyright = u'2014, OpenStack Foundation'
# If true, '()' will be appended to :func: etc. cross-reference text.
add_function_parentheses = True
# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
add_module_names = True
# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'
# -- Options for HTML output --------------------------------------------------
# The theme to use for HTML and HTML Help pages. Major themes that come with
# Sphinx are currently 'default' and 'sphinxdoc'.
# html_theme_path = ["."]
# html_theme = '_theme'
# html_static_path = ['static']
# Output file base name for HTML help builder.
htmlhelp_basename = '%sdoc' % project
# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title, author, documentclass
# [howto/manual]).
latex_documents = [
('index',
'%s.tex' % project,
u'%s Documentation' % project,
u'OpenStack Foundation', 'manual'),
]
# Example configuration for intersphinx: refer to the Python standard library.
#intersphinx_mapping = {'http://docs.python.org/': None}

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doc/source/contributing.rst
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==============
Contributing
==============
.. include:: ../../CONTRIBUTING.rst

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doc/source/cors.rst
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===============
CORS Middleware
===============
This middleware provides a comprehensive, configurable implementation of the
CORS_ (Cross Origin Resource Sharing) specification as oslo-supported python
wsgi middleware.
.. note::
While this middleware supports the use of the `*` wildcard origin in the
specification, this feature is not recommended for security reasons. It
is provided to simplify basic use of CORS, practically meaning "I don't
care how this is used." In an intranet setting, this could lead to leakage
of data beyond the intranet and therefore should be avoided.
Quickstart
----------
First, include the middleware in your application::
from oslo_middleware import cors
app = cors.CORS(your_wsgi_application)
Secondly, add as many allowed origins as you would like::
app.add_origin(allowed_origin='https://website.example.com:443',
allow_credentials=True,
max_age=3600,
allow_methods=['GET','PUT','POST','DELETE'],
allow_headers=['X-Custom-Header'],
expose_headers=['X-Custom-Header'])
# ... add more origins here.
Configuration for oslo_config
-----------------------------
A factory method has been provided to simplify configuration of your CORS
domain, using oslo_config::
from oslo_middleware import cors
from oslo_config import cfg
app = cors.CORS(your_wsgi_application, cfg.CONF)
In your application's config file, then include a configuration block
something like this::
[cors]
allowed_origin=https://website.example.com:443,https://website2.example.com:443
max_age=3600
allow_methods=GET,POST,PUT,DELETE
allow_headers=X-Custom-Header
expose_headers=X-Custom-Header
If your software requires specific headers or methods for proper operation, you
may include these as latent properties. These will be evaluated in addition
to any found in configuration::
from oslo_middleware import cors
app = cors.CORS(your_wsgi_application)
app.set_latent(allow_headers=['X-System-Header'],
expose_headers=['X-System-Header'],
allow_methods=['GET','PATCH'])
Configuration for pastedeploy
-----------------------------
If your application is using pastedeploy, the following configuration block
will add CORS support.::
[filter:cors]
paste.filter_factory = oslo_middleware.cors:filter_factory
allowed_origin=https://website.example.com:443,https://website2.example.com:443
max_age=3600
allow_methods=GET,POST,PUT,DELETE
allow_headers=X-Custom-Header
expose_headers=X-Custom-Header
If your application is using pastedeploy, but would also like to use the
existing configuration from oslo_config in order to simplify the points of
configuration, this may be done as follows.::
[filter:cors]
paste.filter_factory = oslo_middleware.cors:filter_factory
oslo_config_project = oslo_project_name
# Optional field, in case the program name is different from the project:
oslo_config_program = oslo_project_name-api
# This method also permits setting latent properties, for any origins set
# in oslo config.
latent_allow_headers=X-Auth-Token
latent_expose_headers=X-Auth-Token
latent_methods=GET,PUT,POST
Configuration Options
---------------------
.. show-options:: oslo.middleware.cors
Module Documentation
--------------------
.. automodule:: oslo_middleware.cors
:members:
.. _CORS: http://www.w3.org/TR/cors/

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================================
Healthcheck middleware plugins
================================
.. automodule:: oslo_middleware.healthcheck
:members:
.. automodule:: oslo_middleware.healthcheck.disable_by_file
:members:
Available Plugins
------------------
.. list-plugins:: oslo.middleware.healthcheck
:detailed:

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doc/source/history.rst
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.. include:: ../../ChangeLog

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doc/source/index.rst
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.. include:: ../../README.rst
Contents
========
.. toctree::
:maxdepth: 2
installation
api
healthcheck_plugins
cors
oslo_config
contributing
Release Notes
=============
.. toctree::
:maxdepth: 1
history

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doc/source/installation.rst
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============
Installation
============
At the command line::
$ pip install oslo.middleware
Or, if you have virtualenvwrapper installed::
$ mkvirtualenv oslo.middleware
$ pip install oslo.middleware

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doc/source/oslo_config.rst
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=============================
Middlewares and configuration
=============================
Middlewares can be configured in multiple fashion depending of the
application needs. Here is some use-cases:
Configuration from the application
----------------------------------
The application code will looks like::
from oslo_middleware import sizelimit
from oslo_config import cfg
conf = cfg.ConfigOpts()
app = sizelimit.RequestBodySizeLimiter(your_wsgi_application, conf)
Configuration with paste-deploy and the oslo.config
---------------------------------------------------
The paste filter (in /etc/my_app/api-paste.ini) will looks like::
[filter:sizelimit]
paste.filter_factory = oslo_middleware.sizelimit:RequestBodySizeLimiter.factory
# In case of the application doesn't use the global oslo.config
# object. The middleware must known the app name to load
# the application configuration, by setting this:
# oslo_config_project = my_app
# In some cases, you may need to specify the program name for the project
# as well.
# oslo_config_program = my_app-api
The oslo.config file of the application (eg: /etc/my_app/my_app.conf) will looks like::
[oslo_middleware]
max_request_body_size=1000
Configuration with pastedeploy only
-----------------------------------
The paste filter (in /etc/my_app/api-paste.ini) will looks like::
[filter:sizelimit]
paste.filter_factory = oslo_middleware.sizelimit:RequestBodySizeLimiter.factory
max_request_body_size=1000
This will override any configuration done via oslo.config
.. note::
healtcheck middleware does not yet use oslo.config, see :doc:`healthcheck_plugins`

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oslo/__init__.py
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
__import__('pkg_resources').declare_namespace(__name__)

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oslo/middleware/__init__.py
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import sys
import warnings
def deprecated():
new_name = __name__.replace('.', '_')
warnings.warn(
('The oslo namespace package is deprecated. Please use %s instead.' %
new_name),
DeprecationWarning,
stacklevel=3,
)
# NOTE(dims): We cannot remove the deprecation or redirects below
# until Liberty-EOL
deprecated()
from oslo_middleware import base
from oslo_middleware import catch_errors
from oslo_middleware import correlation_id
from oslo_middleware import debug
from oslo_middleware import request_id
from oslo_middleware import sizelimit
sys.modules['oslo.middleware.base'] = base
sys.modules['oslo.middleware.catch_errors'] = catch_errors
sys.modules['oslo.middleware.correlation_id'] = correlation_id
sys.modules['oslo.middleware.debug'] = debug
sys.modules['oslo.middleware.request_id'] = request_id
sys.modules['oslo.middleware.sizelimit'] = sizelimit
from oslo_middleware.catch_errors import CatchErrors
from oslo_middleware.correlation_id import CorrelationId
from oslo_middleware.cors import CORS
from oslo_middleware.debug import Debug
from oslo_middleware.healthcheck import Healthcheck
from oslo_middleware.http_proxy_to_wsgi import HTTPProxyToWSGI
from oslo_middleware.request_id import RequestId
from oslo_middleware.sizelimit import RequestBodySizeLimiter
from oslo_middleware.ssl import SSLMiddleware

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oslo_middleware/__init__.py
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
__all__ = ['CatchErrors',
'CorrelationId',
'CORS',
'Debug',
'Healthcheck',
'HTTPProxyToWSGI',
'RequestId',
'RequestBodySizeLimiter',
'SSLMiddleware']
from oslo_middleware.catch_errors import CatchErrors
from oslo_middleware.correlation_id import CorrelationId
from oslo_middleware.cors import CORS
from oslo_middleware.debug import Debug
from oslo_middleware.healthcheck import Healthcheck
from oslo_middleware.http_proxy_to_wsgi import HTTPProxyToWSGI
from oslo_middleware.request_id import RequestId
from oslo_middleware.sizelimit import RequestBodySizeLimiter
from oslo_middleware.ssl import SSLMiddleware

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oslo_middleware/_i18n.py
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""oslo.i18n integration module.
See http://docs.openstack.org/developer/oslo.i18n/usage.html
"""
import oslo_i18n
_translators = oslo_i18n.TranslatorFactory(domain='oslo_middleware')
# The primary translation function using the well-known name "_"
_ = _translators.primary
# Translators for log levels.
#
# The abbreviated names are meant to reflect the usual use of a short
# name like '_'. The "L" is for "log" and the other letter comes from
# the level.
_LI = _translators.log_info
_LW = _translators.log_warning
_LE = _translators.log_error
_LC = _translators.log_critical

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oslo_middleware/base.py
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# Copyright 2011 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Base class(es) for WSGI Middleware."""
from inspect import getargspec
import webob.dec
import webob.request
import webob.response
from oslo_config import cfg
class NoContentTypeResponse(webob.response.Response):
default_content_type = None # prevents webob assigning content type
class NoContentTypeRequest(webob.request.Request):
ResponseClass = NoContentTypeResponse
class ConfigurableMiddleware(object):
"""Base WSGI middleware wrapper.
These classes require an application to be initialized that will be called
next. By default the middleware will simply call its wrapped app, or you
can override __call__ to customize its behavior.
"""
@classmethod
def factory(cls, global_conf, **local_conf):
"""Factory method for paste.deploy.
:param global_conf: dict of options for all middlewares
(usually the [DEFAULT] section of the paste deploy
configuration file)
:param local_conf: options dedicated to this middleware
(usually the option defined in the middleware
section of the paste deploy configuration file)
"""
conf = global_conf.copy() if global_conf else {}
conf.update(local_conf)
def middleware_filter(app):
return cls(app, conf)
return middleware_filter
def __init__(self, application, conf=None):
"""Base middleware constructor
:param conf: a dict of options or a cfg.ConfigOpts object
"""
self.application = application
# NOTE(sileht): If the configuration come from oslo.config
# just use it.
if isinstance(conf, cfg.ConfigOpts):
self.conf = {}
self.oslo_conf = conf
else:
self.conf = conf or {}
if "oslo_config_project" in self.conf:
if 'oslo_config_file' in self.conf:
default_config_files = [self.conf['oslo_config_file']]
else:
default_config_files = None
if 'oslo_config_program' in self.conf:
program = self.conf['oslo_config_program']
else:
program = None
self.oslo_conf = cfg.ConfigOpts()
self.oslo_conf([],
project=self.conf['oslo_config_project'],
prog=program,
default_config_files=default_config_files,
validate_default_values=True)
else:
# Fallback to global object
self.oslo_conf = cfg.CONF
def _conf_get(self, key, group="oslo_middleware"):
if key in self.conf:
# Validate value type
self.oslo_conf.set_override(key, self.conf[key], group=group,
enforce_type=True)
return getattr(getattr(self.oslo_conf, group), key)
@staticmethod
def process_request(req):
"""Called on each request.
If this returns None, the next application down the stack will be
executed. If it returns a response then that response will be returned
and execution will stop here.
"""
return None
@staticmethod
def process_response(response, request=None):
"""Do whatever you'd like to the response."""
return response
@webob.dec.wsgify(RequestClass=NoContentTypeRequest)
def __call__(self, req):
response = self.process_request(req)
if response:
return response
response = req.get_response(self.application)
(args, varargs, varkw, defaults) = getargspec(self.process_response)
if 'request' in args:
return self.process_response(response, request=req)
return self.process_response(response)
class Middleware(ConfigurableMiddleware):
"""Legacy base WSGI middleware wrapper.
Legacy interface that doesn't pass configuration options
to the middleware when it's loaded via paste.deploy.
"""
@classmethod
def factory(cls, global_conf, **local_conf):
"""Factory method for paste.deploy."""
return cls

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oslo_middleware/catch_errors.py
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@ -1,43 +0,0 @@
# Copyright (c) 2013 NEC Corporation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import webob.dec
import webob.exc
from oslo_middleware._i18n import _LE
from oslo_middleware import base
LOG = logging.getLogger(__name__)
class CatchErrors(base.ConfigurableMiddleware):
"""Middleware that provides high-level error handling.
It catches all exceptions from subsequent applications in WSGI pipeline
to hide internal errors from API response.
"""
@webob.dec.wsgify
def __call__(self, req):
try:
response = req.get_response(self.application)
except Exception:
LOG.exception(_LE('An error occurred during '
'processing the request: %s'), req)
response = webob.exc.HTTPInternalServerError()
return response

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oslo_middleware/correlation_id.py
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# Copyright (c) 2013 Rackspace Hosting
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import uuid
from oslo_middleware import base
class CorrelationId(base.ConfigurableMiddleware):
"Middleware that attaches a correlation id to WSGI request"
def process_request(self, req):
correlation_id = (req.headers.get("X_CORRELATION_ID") or
str(uuid.uuid4()))
req.headers['X_CORRELATION_ID'] = correlation_id

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oslo_middleware/cors.py
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# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing permissions and
# limitations under the License.
import copy
import logging
import debtcollector
from oslo_config import cfg
from oslo_middleware import base
import six
import webob.exc
LOG = logging.getLogger(__name__)
CORS_OPTS = [
cfg.ListOpt('allowed_origin',
default=None,
help='Indicate whether this resource may be shared with the '
'domain received in the requests "origin" header. '
'Format: "<protocol>://<host>[:<port>]", no trailing '
'slash. Example: https://horizon.example.com'),
cfg.BoolOpt('allow_credentials',
default=True,
help='Indicate that the actual request can include user '
'credentials'),
cfg.ListOpt('expose_headers',
default=[],
help='Indicate which headers are safe to expose to the API. '
'Defaults to HTTP Simple Headers.'),
cfg.IntOpt('max_age',
default=3600,
help='Maximum cache age of CORS preflight requests.'),
cfg.ListOpt('allow_methods',
default=['OPTIONS', 'GET', 'HEAD', 'POST', 'PUT', 'DELETE',
'TRACE', 'PATCH'], # RFC 2616, RFC 5789
help='Indicate which methods can be used during the actual '
'request.'),
cfg.ListOpt('allow_headers',
default=[],
help='Indicate which header field names may be used during '
'the actual request.')
]
def set_defaults(**kwargs):
"""Override the default values for configuration options.
This method permits a project to override the default CORS option values.
For example, it may wish to offer a set of sane default headers which
allow it to function with only minimal additional configuration.
:param allow_credentials: Whether to permit credentials.
:type allow_credentials: bool
:param expose_headers: A list of headers to expose.
:type expose_headers: List of Strings
:param max_age: Maximum cache duration in seconds.
:type max_age: Int
:param allow_methods: List of HTTP methods to permit.
:type allow_methods: List of Strings
:param allow_headers: List of HTTP headers to permit from the client.
:type allow_headers: List of Strings
"""
# Since 'None' is a valid config override, we have to use kwargs. Else
# there's no good way for a user to override only one option, because all
# the others would be overridden to 'None'.
valid_params = set(k.name for k in CORS_OPTS
if k.name != 'allowed_origin')
passed_params = set(k for k in kwargs)
wrong_params = passed_params - valid_params
if wrong_params:
raise AttributeError('Parameter(s) [%s] invalid, please only use [%s]'
% (wrong_params, valid_params))
# Set global defaults.
cfg.set_defaults(CORS_OPTS, **kwargs)
class InvalidOriginError(Exception):
"""Exception raised when Origin is invalid."""
def __init__(self, origin):
self.origin = origin
super(InvalidOriginError, self).__init__(
'CORS request from origin \'%s\' not permitted.' % origin)
class CORS(base.ConfigurableMiddleware):
"""CORS Middleware.
This middleware allows a WSGI app to serve CORS headers for multiple
configured domains.
For more information, see http://www.w3.org/TR/cors/
"""
simple_headers = [
'Accept',
'Accept-Language',
'Content-Type',
'Cache-Control',
'Content-Language',
'Expires',
'Last-Modified',
'Pragma'
]
def __init__(self, application, *args, **kwargs):
super(CORS, self).__init__(application, *args, **kwargs)
# Begin constructing our configuration hash.
self.allowed_origins = {}
self._init_conf()
def sanitize(csv_list):
try:
return [str.strip(x) for x in csv_list.split(',')]
except Exception:
return None
self.set_latent(
allow_headers=sanitize(self.conf.get('latent_allow_headers')),
expose_headers=sanitize(self.conf.get('latent_expose_headers')),
allow_methods=sanitize(self.conf.get('latent_allow_methods'))
)
@classmethod
def factory(cls, global_conf, **local_conf):
"""factory method for paste.deploy
allowed_origin: Protocol, host, and port for the allowed origin.
allow_credentials: Whether to permit credentials.
expose_headers: A list of headers to expose.
max_age: Maximum cache duration.
allow_methods: List of HTTP methods to permit.
allow_headers: List of HTTP headers to permit from the client.
"""
if ('allowed_origin' not in local_conf
and 'oslo_config_project' not in local_conf):
raise TypeError("allowed_origin or oslo_config_project "
"is required")
return super(CORS, cls).factory(global_conf, **local_conf)
def _init_conf(self):
'''Initialize this middleware from an oslo.config instance.'''
# Set up a location for our latent configuration options
self._latent_configuration = {
'allow_headers': [],
'expose_headers': [],
'methods': []
}
# First, check the configuration and register global options.
self.oslo_conf.register_opts(CORS_OPTS, 'cors')
allowed_origin = self._conf_get('allowed_origin', 'cors')
allow_credentials = self._conf_get('allow_credentials', 'cors')
expose_headers = self._conf_get('expose_headers', 'cors')
max_age = self._conf_get('max_age', 'cors')
allow_methods = self._conf_get('allow_methods', 'cors')
allow_headers = self._conf_get('allow_headers', 'cors')
# Clone our original CORS_OPTS, and set the defaults to whatever is
# set in the global conf instance. This is done explicitly (instead
# of **kwargs), since we don't accidentally want to catch
# allowed_origin.
subgroup_opts = copy.deepcopy(CORS_OPTS)
cfg.set_defaults(subgroup_opts,
allow_credentials=allow_credentials,
expose_headers=expose_headers,
max_age=max_age,
allow_methods=allow_methods,
allow_headers=allow_headers)
# If the default configuration contains an allowed_origin, don't
# forget to register that.
self.add_origin(allowed_origin=allowed_origin,
allow_credentials=allow_credentials,
expose_headers=expose_headers,
max_age=max_age,
allow_methods=allow_methods,
allow_headers=allow_headers)
# Iterate through all the loaded config sections, looking for ones
# prefixed with 'cors.'
for section in self.oslo_conf.list_all_sections():
if section.startswith('cors.'):
debtcollector.deprecate('Multiple configuration blocks are '
'deprecated and will be removed in '
'future versions. Please consolidate '
'your configuration in the [cors] '
'configuration block.')
# Register with the preconstructed defaults
self.oslo_conf.register_opts(subgroup_opts, section)
self.add_origin(**self.oslo_conf[section])
def add_origin(self, allowed_origin, allow_credentials=True,
expose_headers=None, max_age=None, allow_methods=None,
allow_headers=None):
'''Add another origin to this filter.
:param allowed_origin: Protocol, host, and port for the allowed origin.
:param allow_credentials: Whether to permit credentials.
:param expose_headers: A list of headers to expose.
:param max_age: Maximum cache duration.
:param allow_methods: List of HTTP methods to permit.
:param allow_headers: List of HTTP headers to permit from the client.
:return:
'''
# NOTE(dims): Support older code that still passes in
# a string for allowed_origin instead of a list
if isinstance(allowed_origin, six.string_types):
# TODO(krotscheck): https://review.openstack.org/#/c/312687/
LOG.warning('DEPRECATED: The `allowed_origin` keyword argument in '
'`add_origin()` should be a list, found String.')
allowed_origin = [allowed_origin]
if allowed_origin:
for origin in allowed_origin:
if origin in self.allowed_origins:
LOG.warning('Allowed origin [%s] already exists, skipping'
% (allowed_origin,))
continue
self.allowed_origins[origin] = {
'allow_credentials': allow_credentials,
'expose_headers': expose_headers,
'max_age': max_age,
'allow_methods': allow_methods,
'allow_headers': allow_headers
}
def set_latent(self, allow_headers=None, allow_methods=None,
expose_headers=None):
'''Add a new latent property for this middleware.
Latent properties are those values which a system requires for
operation. API-specific headers, for example, may be added by an
engineer so that they ship with the codebase, and thus do not require
extra documentation or passing of institutional knowledge.
:param allow_headers: HTTP headers permitted in client requests.
:param allow_methods: HTTP methods permitted in client requests.
:param expose_headers: HTTP Headers exposed to clients.
'''
if allow_headers:
if isinstance(allow_headers, list):
self._latent_configuration['allow_headers'] = allow_headers
else:
raise TypeError("allow_headers must be a list or None.")
if expose_headers:
if isinstance(expose_headers, list):
self._latent_configuration['expose_headers'] = expose_headers
else:
raise TypeError("expose_headers must be a list or None.")
if allow_methods:
if isinstance(allow_methods, list):
self._latent_configuration['methods'] = allow_methods
else:
raise TypeError("allow_methods parameter must be a list or"
" None.")
def process_response(self, response, request=None):
'''Check for CORS headers, and decorate if necessary.
Perform two checks. First, if an OPTIONS request was issued, let the
application handle it, and (if necessary) decorate the response with
preflight headers. In this case, if a 404 is thrown by the underlying
application (i.e. if the underlying application does not handle
OPTIONS requests, the response code is overridden.
In the case of all other requests, regular request headers are applied.
'''
# Sanity precheck: If we detect CORS headers provided by something in
# in the middleware chain, assume that it knows better.
if 'Access-Control-Allow-Origin' in response.headers:
return response
# Doublecheck for an OPTIONS request.
if request.method == 'OPTIONS':
return self._apply_cors_preflight_headers(request=request,
response=response)
# Apply regular CORS headers.
self._apply_cors_request_headers(request=request, response=response)
# Finally, return the response.
return response
@staticmethod
def _split_header_values(request, header_name):
"""Convert a comma-separated header value into a list of values."""
values = []
if header_name in request.headers:
for value in request.headers[header_name].rsplit(','):
value = value.strip()
if value:
values.append(value)
return values
def _apply_cors_preflight_headers(self, request, response):
"""Handle CORS Preflight (Section 6.2)
Given a request and a response, apply the CORS preflight headers
appropriate for the request.
"""
# If the response contains a 2XX code, we have to assume that the
# underlying middleware's response content needs to be persisted.
# Otherwise, create a new response.
if 200 > response.status_code or response.status_code >= 300:
response = base.NoContentTypeResponse(status=webob.exc.HTTPOk.code)
# Does the request have an origin header? (Section 6.2.1)
if 'Origin' not in request.headers:
return response
# Is this origin registered? (Section 6.2.2)
try:
origin, cors_config = self._get_cors_config_by_origin(
request.headers['Origin'])
except InvalidOriginError:
return response
# If there's no request method, exit. (Section 6.2.3)
if 'Access-Control-Request-Method' not in request.headers:
LOG.debug('CORS request does not contain '
'Access-Control-Request-Method header.')
return response
request_method = request.headers['Access-Control-Request-Method']
# Extract Request headers. If parsing fails, exit. (Section 6.2.4)
try:
request_headers = \
self._split_header_values(request,
'Access-Control-Request-Headers')
except Exception:
LOG.debug('Cannot parse request headers.')
return response
# Compare request method to permitted methods (Section 6.2.5)
permitted_methods = (
cors_config['allow_methods'] +
self._latent_configuration['methods']
)
if request_method not in permitted_methods:
LOG.debug('Request method \'%s\' not in permitted list: %s'
% (request_method, permitted_methods))
return response
# Compare request headers to permitted headers, case-insensitively.
# (Section 6.2.6)
permitted_headers = [header.upper() for header in
(cors_config['allow_headers'] +
self.simple_headers +
self._latent_configuration['allow_headers'])]
for requested_header in request_headers:
upper_header = requested_header.upper()
if upper_header not in permitted_headers:
LOG.debug('Request header \'%s\' not in permitted list: %s'
% (requested_header, permitted_headers))
return response
# Set the default origin permission headers. (Sections 6.2.7, 6.4)
response.headers['Vary'] = 'Origin'
response.headers['Access-Control-Allow-Origin'] = origin
# Does this CORS configuration permit credentials? (Section 6.2.7)
if cors_config['allow_credentials']:
response.headers['Access-Control-Allow-Credentials'] = 'true'
# Attach Access-Control-Max-Age if appropriate. (Section 6.2.8)
if 'max_age' in cors_config and cors_config['max_age']:
response.headers['Access-Control-Max-Age'] = \
str(cors_config['max_age'])
# Attach Access-Control-Allow-Methods. (Section 6.2.9)
response.headers['Access-Control-Allow-Methods'] = request_method
# Attach Access-Control-Allow-Headers. (Section 6.2.10)
if request_headers:
response.headers['Access-Control-Allow-Headers'] = \
','.join(request_headers)
return response
def _get_cors_config_by_origin(self, origin):
if origin not in self.allowed_origins:
if '*' in self.allowed_origins:
origin = '*'
else:
LOG.debug('CORS request from origin \'%s\' not permitted.'
% origin)
raise InvalidOriginError(origin)
return origin, self.allowed_origins[origin]
def _apply_cors_request_headers(self, request, response):
"""Handle Basic CORS Request (Section 6.1)
Given a request and a response, apply the CORS headers appropriate
for the request to the response.
"""
# Does the request have an origin header? (Section 6.1.1)
if 'Origin' not in request.headers:
return
# Is this origin registered? (Section 6.1.2)
try:
origin, cors_config = self._get_cors_config_by_origin(
request.headers['Origin'])
except InvalidOriginError:
return
# Set the default origin permission headers. (Sections 6.1.3 & 6.4)
if 'Vary' in response.headers:
response.headers['Vary'] += ',Origin'
else:
response.headers['Vary'] = 'Origin'
response.headers['Access-Control-Allow-Origin'] = origin
# Does this CORS configuration permit credentials? (Section 6.1.3)
if cors_config['allow_credentials']:
response.headers['Access-Control-Allow-Credentials'] = 'true'
# Attach the exposed headers and exit. (Section 6.1.4)
if cors_config['expose_headers']:
response.headers['Access-Control-Expose-Headers'] = \
','.join(cors_config['expose_headers'] +
self._latent_configuration['expose_headers'])
# NOTE(sileht): Shortcut for backwards compatibility
filter_factory = CORS.factory

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oslo_middleware/debug.py
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@ -1,60 +0,0 @@
# Copyright 2011 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""Debug middleware"""
from __future__ import print_function
import sys
import six
import webob.dec
from oslo_middleware import base
class Debug(base.ConfigurableMiddleware):
"""Helper class that returns debug information.
Can be inserted into any WSGI application chain to get information about
the request and response.
"""
@webob.dec.wsgify
def __call__(self, req):
print(("*" * 40) + " REQUEST ENVIRON")
for key, value in req.environ.items():
print(key, "=", value)
print()
resp = req.get_response(self.application)
print(("*" * 40) + " RESPONSE HEADERS")
for (key, value) in six.iteritems(resp.headers):
print(key, "=", value)
print()
resp.app_iter = self.print_generator(resp.app_iter)
return resp
@staticmethod
def print_generator(app_iter):
"""Prints the contents of a wrapper string iterator when iterated."""
print(("*" * 40) + " BODY")
for part in app_iter:
sys.stdout.write(part)
sys.stdout.flush()
yield part
print()

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oslo_middleware/healthcheck/__init__.py
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# Copyright 2011 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import collections
import gc
import json
import platform
import socket
import sys
import traceback
import jinja2
from oslo_utils import reflection
from oslo_utils import strutils
from oslo_utils import timeutils
import six
import stevedore
import webob.dec
import webob.exc
import webob.response
try:
import greenlet
except ImportError:
greenlet = None
from oslo_middleware import base
def _find_objects(t):
return [o for o in gc.get_objects() if isinstance(o, t)]
def _expand_template(contents, params):
tpl = jinja2.Template(source=contents,
undefined=jinja2.StrictUndefined)
return tpl.render(**params)
class Healthcheck(base.ConfigurableMiddleware):
"""Healthcheck middleware used for monitoring.
If the path is /healthcheck, it will respond 200 with "OK" as the body.
Or 503 with the reason as the body if one of the backend report
an application issue.
This is useful for the following reasons:
1. Load balancers can 'ping' this url to determine service availability.
2. Provides an endpoint that is similar to 'mod_status' in apache which
can provide details (or no details, depending on if configured) about
the activity of the server.
Example requests/responses:
$ curl -i -X HEAD "http://0.0.0.0:8775/status"
HTTP/1.1 204 No Content
Content-Type: text/plain; charset=UTF-8
Content-Length: 0
Date: Fri, 11 Sep 2015 18:55:08 GMT
$ curl -i "http://0.0.0.0:8775/status"
HTTP/1.1 200 OK
Content-Type: text/plain; charset=UTF-8
Content-Length: 2
Date: Fri, 11 Sep 2015 18:55:43 GMT
OK
Example of paste configuration:
.. code-block:: ini
[filter:healthcheck]
paste.filter_factory = oslo_middleware:Healthcheck.factory
path = /healthcheck
backends = disable_by_file
disable_by_file_path = /var/run/nova/healthcheck_disable
[pipeline:public_api]
pipeline = healthcheck sizelimit [...] public_service
Multiple filter sections can be defined if it desired to have
pipelines with different healthcheck configuration, example:
.. code-block:: ini
[pipeline:public_api]
pipeline = healthcheck_public sizelimit [...] public_service
[pipeline:admin_api]
pipeline = healthcheck_admin sizelimit [...] admin_service
[filter:healthcheck_public]
paste.filter_factory = oslo_middleware:Healthcheck.factory
path = /healthcheck_public
backends = disable_by_file
disable_by_file_path = /var/run/nova/healthcheck_public_disable
[filter:healthcheck_admin]
paste.filter_factory = oslo_middleware:Healthcheck.factory
path = /healthcheck_admin
backends = disable_by_file
disable_by_file_path = /var/run/nova/healthcheck_admin_disable
More details on available backends and their configuration can be found
on this page: :doc:`healthcheck_plugins`.
"""
NAMESPACE = "oslo.middleware.healthcheck"
HEALTHY_TO_STATUS_CODES = {
True: webob.exc.HTTPOk.code,
False: webob.exc.HTTPServiceUnavailable.code,
}
HEAD_HEALTHY_TO_STATUS_CODES = {
True: webob.exc.HTTPNoContent.code,
False: webob.exc.HTTPServiceUnavailable.code,
}
PLAIN_RESPONSE_TEMPLATE = """
{% for reason in reasons %}
{% if reason %}{{reason}}{% endif -%}
{% endfor %}
"""
HTML_RESPONSE_TEMPLATE = """
<HTML>
<HEAD><TITLE>Healthcheck Status</TITLE></HEAD>
<BODY>
{% if detailed -%}
<H1>Server status</H1>
{% if hostname -%}
<B>Server hostname:</B><PRE>{{hostname|e}}</PRE>
{%- endif %}
<B>Current time:</B><PRE>{{now|e}}</PRE>
<B>Python version:</B><PRE>{{python_version|e}}</PRE>
<B>Platform:</B><PRE>{{platform|e}}</PRE>
<HR></HR>
<H2>Garbage collector:</H2>
<B>Counts:</B><PRE>{{gc.counts|e}}</PRE>
<B>Thresholds:</B><PRE>{{gc.threshold|e}}</PRE>
<HR></HR>
{%- endif %}
<H2>Result of {{results|length}} checks:</H2>
<TABLE bgcolor="#ffffff" border="1">
<TBODY>
<TR>
{% if detailed -%}
<TH>
Kind
</TH>
<TH>
Reason
</TH>
<TH>
Details
</TH>
{% else %}
<TH>
Reason
</TH>
{%- endif %}
</TR>
{% for result in results -%}
{% if result.reason -%}
<TR>
{% if detailed -%}
<TD>{{result.class|e}}</TD>
{%- endif %}
<TD>{{result.reason|e}}</TD>
{% if detailed -%}
<TD>{{result.details|e}}</TD>
{%- endif %}
</TR>
{%- endif %}
{%- endfor %}
</TBODY>
</TABLE>
<HR></HR>
{% if detailed -%}
{% if greenthreads -%}
<H2>{{greenthreads|length}} greenthread(s) active:</H2>
<TABLE bgcolor="#ffffff" border="1">
<TBODY>
{% for stack in greenthreads -%}
<TR>
<TD><PRE>{{stack|e}}</PRE></TD>
</TR>
{%- endfor %}
</TBODY>
</TABLE>
<HR></HR>
{%- endif %}
{% if threads -%}
<H2>{{threads|length}} thread(s) active:</H2>
<TABLE bgcolor="#ffffff" border="1">
<TBODY>
{% for stack in threads -%}
<TR>
<TD><PRE>{{stack|e}}</PRE></TD>
</TR>
{%- endfor %}
</TBODY>
</TABLE>
{%- endif %}
{%- endif %}
</BODY>
</HTML>
"""
def __init__(self, application, conf):
super(Healthcheck, self).__init__(application)
self._path = conf.get('path', '/healthcheck')
self._show_details = strutils.bool_from_string(conf.get('detailed'))
self._backend_names = []
backends = conf.get('backends')
if backends:
self._backend_names = backends.split(',')
self._backends = stevedore.NamedExtensionManager(
self.NAMESPACE, self._backend_names,
name_order=True, invoke_on_load=True,
invoke_args=(conf,))
self._accept_to_functor = collections.OrderedDict([
# Order here matters...
('text/plain', self._make_text_response),
('text/html', self._make_html_response),
('application/json', self._make_json_response),
])
self._accept_order = tuple(six.iterkeys(self._accept_to_functor))
# When no accept type matches instead of returning 406 we will
# always return text/plain (because sending an error from this
# middleware actually can cause issues).
self._default_accept = 'text/plain'
@staticmethod
def _get_threadstacks():
threadstacks = []
try:
active_frames = sys._current_frames()
except AttributeError:
pass
else:
buf = six.StringIO()
for stack in six.itervalues(active_frames):
traceback.print_stack(stack, file=buf)
threadstacks.append(buf.getvalue())
buf.seek(0)
buf.truncate()
return threadstacks
@staticmethod
def _get_greenstacks():
greenstacks = []
if greenlet is not None:
buf = six.StringIO()
for gt in _find_objects(greenlet.greenlet):
traceback.print_stack(gt.gr_frame, file=buf)
greenstacks.append(buf.getvalue())
buf.seek(0)
buf.truncate()
return greenstacks
@staticmethod
def _pretty_json_dumps(contents):
return json.dumps(contents, indent=4, sort_keys=True)
@staticmethod
def _are_results_healthy(results):
for result in results:
if not result.available:
return False
return True
def _make_text_response(self, results, healthy):
params = {
'reasons': [result.reason for result in results],
'detailed': self._show_details,
}
body = _expand_template(self.PLAIN_RESPONSE_TEMPLATE, params)
return (body.strip(), 'text/plain')
def _make_json_response(self, results, healthy):
if self._show_details:
body = {
'detailed': True,
'python_version': sys.version,
'now': str(timeutils.utcnow()),
'platform': platform.platform(),
'gc': {
'counts': gc.get_count(),
'threshold': gc.get_threshold(),
},
}
reasons = []
for result in results:
reasons.append({
'reason': result.reason,
'details': result.details or '',
'class': reflection.get_class_name(result,
fully_qualified=False),
})
body['reasons'] = reasons
body['greenthreads'] = self._get_greenstacks()
body['threads'] = self._get_threadstacks()
else:
body = {
'reasons': [result.reason for result in results],
'detailed': False,
}
return (self._pretty_json_dumps(body), 'application/json')
def _make_head_response(self, results, healthy):
return ( "", "text/plain")
def _make_html_response(self, results, healthy):
try:
hostname = socket.gethostname()
except socket.error:
hostname = None
translated_results = []
for result in results:
translated_results.append({
'details': result.details or '',
'reason': result.reason,
'class': reflection.get_class_name(result,
fully_qualified=False),
})
params = {
'healthy': healthy,
'hostname': hostname,
'results': translated_results,
'detailed': self._show_details,
'now': str(timeutils.utcnow()),
'python_version': sys.version,
'platform': platform.platform(),
'gc': {
'counts': gc.get_count(),
'threshold': gc.get_threshold(),
},
'threads': self._get_threadstacks(),
'greenthreads': self._get_threadstacks(),
}
body = _expand_template(self.HTML_RESPONSE_TEMPLATE, params)
return (body.strip(), 'text/html')
@webob.dec.wsgify
def process_request(self, req):
if req.path != self._path:
return None
results = [ext.obj.healthcheck(req.server_port)
for ext in self._backends]
healthy = self._are_results_healthy(results)
if req.method == "HEAD":
functor = self._make_head_response
status = self.HEAD_HEALTHY_TO_STATUS_CODES[healthy]
else:
status = self.HEALTHY_TO_STATUS_CODES[healthy]
accept_type = req.accept.best_match(self._accept_order)
if not accept_type:
accept_type = self._default_accept
functor = self._accept_to_functor[accept_type]
body, content_type = functor(results, healthy)
return webob.response.Response(status=status, body=body,
content_type=content_type)

69
oslo_middleware/healthcheck/__main__.py
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@ -1,69 +0,0 @@
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
from six.moves import SimpleHTTPServer # noqa
from six.moves import socketserver
import webob
from oslo_middleware import healthcheck
class HttpHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
def do_GET(self):
@webob.dec.wsgify
def dummy_application(req):
return 'test'
app = healthcheck.Healthcheck(dummy_application, {'detailed': True})
req = webob.Request.blank("/healthcheck", accept='text/html',
method='GET')
res = req.get_response(app)
self.send_response(res.status_code)
for header_name, header_value in res.headerlist:
self.send_header(header_name, header_value)
self.end_headers()
self.wfile.write(res.body)
self.wfile.close()
def positive_int(blob):
value = int(blob)
if value < 0:
msg = "%r is not a positive integer" % blob
raise argparse.ArgumentTypeError(msg)
return value
def create_server(port=0):
handler = HttpHandler
server = socketserver.TCPServer(("", port), handler)
return server
def main(args=None):
"""Runs a basic http server to show healthcheck functionality."""
parser = argparse.ArgumentParser()
parser.add_argument("-p", "--port",
help="Unused port to run the tiny"
" http server on (or zero to select a"
" random unused port)",
type=positive_int, required=True)
args = parser.parse_args(args=args)
server = create_server(args.port)
print("Serving at port: %s" % server.server_address[1])
server.serve_forever()
if __name__ == '__main__':
main()

111
oslo_middleware/healthcheck/disable_by_file.py
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@ -1,111 +0,0 @@
# Copyright 2011 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import os
from oslo_middleware._i18n import _LW
from oslo_middleware.healthcheck import pluginbase
LOG = logging.getLogger(__name__)
class DisableByFilesPortsHealthcheck(pluginbase.HealthcheckBaseExtension):
"""DisableByFilesPorts healthcheck middleware plugin
This plugin checks presence of a file that is provided for a application
running on a certain port to report if the service is unavailable
or not.
Example of middleware configuration:
.. code-block:: ini
[filter:healthcheck]
paste.filter_factory = oslo_middleware:Healthcheck.factory
path = /healthcheck
backends = disable_by_files_ports
disable_by_file_paths = 5000:/var/run/keystone/healthcheck_disable, \
35357:/var/run/keystone/admin_healthcheck_disable
"""
def __init__(self, conf):
super(DisableByFilesPortsHealthcheck, self).__init__(conf)
self.status_files = {}
self.status_files.update(
self._iter_paths_ports(self.conf.get('disable_by_file_paths')))
@staticmethod
def _iter_paths_ports(paths):
if paths:
for port_path in paths.split(","):
port_path = port_path.strip()
if port_path:
# On windows, drive letters are followed by colons,
# which makes split() return 3 elements in this case
port, path = port_path.split(":", 1)
port = int(port)
yield (port, path)
def healthcheck(self, server_port):
path = self.status_files.get(server_port)
if not path:
LOG.warning(_LW('DisableByFilesPorts healthcheck middleware'
' enabled without disable_by_file_paths set'
' for port %s') % server_port)
return pluginbase.HealthcheckResult(available=True,
reason="OK")
else:
if not os.path.exists(path):
return pluginbase.HealthcheckResult(available=True,
reason="OK")
else:
return pluginbase.HealthcheckResult(available=False,
reason="DISABLED BY FILE")
class DisableByFileHealthcheck(pluginbase.HealthcheckBaseExtension):
"""DisableByFile healthcheck middleware plugin
This plugin checks presence of a file to report if the service
is unavailable or not.
Example of middleware configuration:
.. code-block:: ini
[filter:healthcheck]
paste.filter_factory = oslo_middleware:Healthcheck.factory
path = /healthcheck
backends = disable_by_file
disable_by_file_path = /var/run/nova/healthcheck_disable
"""
def healthcheck(self, server_port):
path = self.conf.get('disable_by_file_path')
if path is None:
LOG.warning(_LW('DisableByFile healthcheck middleware enabled '
'without disable_by_file_path set'))
return pluginbase.HealthcheckResult(
available=True, reason="OK",
details="No 'disable_by_file_path' configuration value"
" specified")
elif not os.path.exists(path):
return pluginbase.HealthcheckResult(
available=True, reason="OK",
details="Path '%s' was not found" % path)
else:
return pluginbase.HealthcheckResult(
available=False, reason="DISABLED BY FILE",
details="Path '%s' was found" % path)

40
oslo_middleware/healthcheck/pluginbase.py
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@ -1,40 +0,0 @@
# Copyright 2011 OpenStack Foundation.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import abc
import six
class HealthcheckResult(object):
"""Result of a ``healthcheck`` method call should be this object."""
def __init__(self, available, reason, details=None):
self.available = available
self.reason = reason
self.details = details
@six.add_metaclass(abc.ABCMeta)
class HealthcheckBaseExtension(object):
def __init__(self, conf):
self.conf = conf
@abc.abstractmethod
def healthcheck(self, server_port):
"""method called by the healthcheck middleware
return: HealthcheckResult object
"""

91
oslo_middleware/http_proxy_to_wsgi.py
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@ -1,91 +0,0 @@
# -*- encoding: utf-8 -*-
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing permissions and
# limitations under the License.
from debtcollector import removals
from oslo_config import cfg
from oslo_middleware import base
OPTS = [
cfg.BoolOpt('enable_proxy_headers_parsing',
default=False,
help="Whether the application is behind a proxy or not. "
"This determines if the middleware should parse the "
"headers or not.")
]
class HTTPProxyToWSGI(base.ConfigurableMiddleware):
"""HTTP proxy to WSGI termination middleware.
This middleware overloads WSGI environment variables with the one provided
by the remote HTTP reverse proxy.
"""
def __init__(self, application, *args, **kwargs):
super(HTTPProxyToWSGI, self).__init__(application, *args, **kwargs)
self.oslo_conf.register_opts(OPTS, group='oslo_middleware')
@staticmethod
def _parse_rfc7239_header(header):
"""Parses RFC7239 Forward headers.
e.g. for=192.0.2.60;proto=http, for=192.0.2.60;by=203.0.113.43
"""
result = []
for proxy in header.split(","):
entry = {}
for d in proxy.split(";"):
key, _, value = d.partition("=")
entry[key.lower()] = value
result.append(entry)
return result
def process_request(self, req):
if not self._conf_get('enable_proxy_headers_parsing'):
return
fwd_hdr = req.environ.get("HTTP_FORWARDED")
if fwd_hdr:
proxies = self._parse_rfc7239_header(fwd_hdr)
# Let's use the value from the first proxy
if proxies:
proxy = proxies[0]
forwarded_proto = proxy.get("proto")
if forwarded_proto:
req.environ['wsgi.url_scheme'] = forwarded_proto
forwarded_host = proxy.get("host")
if forwarded_host:
req.environ['HTTP_HOST'] = forwarded_host
else:
# World before RFC7239
forwarded_proto = req.environ.get("HTTP_X_FORWARDED_PROTO")
if forwarded_proto:
req.environ['wsgi.url_scheme'] = forwarded_proto
forwarded_host = req.environ.get("HTTP_X_FORWARDED_HOST")
if forwarded_host:
req.environ['HTTP_HOST'] = forwarded_host
v = req.environ.get("HTTP_X_FORWARDED_PREFIX")
if v:
req.environ['SCRIPT_NAME'] = v + req.environ['SCRIPT_NAME']
@removals.remove
class HTTPProxyToWSGIMiddleware(HTTPProxyToWSGI):
"""Placeholder for backward compatibility"""

27
oslo_middleware/locale/de/LC_MESSAGES/oslo_middleware-log-error.po
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@ -1,27 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Andreas Jaeger <jaegerandi@gmail.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-09-07 08:10+0000\n"
"Last-Translator: Andreas Jaeger <jaegerandi@gmail.com>\n"
"Language: de\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: German\n"
#, python-format
msgid "An error occurred during processing the request: %s"
msgstr "Ein Fehler trat auf während die Anfrage behandelt wurde: %s"

26
oslo_middleware/locale/de/LC_MESSAGES/oslo_middleware.po
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@ -1,26 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Andreas Jaeger <jaegerandi@gmail.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-09-07 08:09+0000\n"
"Last-Translator: Andreas Jaeger <jaegerandi@gmail.com>\n"
"Language: de\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: German\n"
msgid "Request is too large."
msgstr "Die Anfrage ist zu groß."

27
oslo_middleware/locale/en_GB/LC_MESSAGES/oslo_middleware-log-error.po
View File

@ -1,27 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Andi Chandler <andi@gowling.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-11-03 11:03+0000\n"
"Last-Translator: Andi Chandler <andi@gowling.com>\n"
"Language: en-GB\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: English (United Kingdom)\n"
#, python-format
msgid "An error occurred during processing the request: %s"
msgstr "An error occurred during processing the request: %s"

26
oslo_middleware/locale/en_GB/LC_MESSAGES/oslo_middleware.po
View File

@ -1,26 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Andi Chandler <andi@gowling.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-11-03 11:03+0000\n"
"Last-Translator: Andi Chandler <andi@gowling.com>\n"
"Language: en-GB\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: English (United Kingdom)\n"
msgid "Request is too large."
msgstr "Request is too large."

27
oslo_middleware/locale/fr/LC_MESSAGES/oslo_middleware-log-error.po
View File

@ -1,27 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Maxime COQUEREL <max.coquerel@gmail.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-09-25 09:01+0000\n"
"Last-Translator: Maxime COQUEREL <max.coquerel@gmail.com>\n"
"Language: fr\n"
"Plural-Forms: nplurals=2; plural=(n > 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: French\n"
#, python-format
msgid "An error occurred during processing the request: %s"
msgstr "Une erreur s'est produite lors du traitement de la demande: %s"

26
oslo_middleware/locale/fr/LC_MESSAGES/oslo_middleware.po
View File

@ -1,26 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2015 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
#
# Translators:
# Maxime COQUEREL <max.coquerel@gmail.com>, 2014
# Andreas Jaeger <jaegerandi@gmail.com>, 2016. #zanata
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-19 23:53+0000\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"PO-Revision-Date: 2014-09-17 09:06+0000\n"
"Last-Translator: Maxime COQUEREL <max.coquerel@gmail.com>\n"
"Language: fr\n"
"Plural-Forms: nplurals=2; plural=(n > 1);\n"
"Generated-By: Babel 2.0\n"
"X-Generator: Zanata 3.7.3\n"
"Language-Team: French\n"
msgid "Request is too large."
msgstr "Demande trop importante."

25
oslo_middleware/locale/oslo_middleware-log-error.pot
View File

@ -1,25 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2016 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
# FIRST AUTHOR <EMAIL@ADDRESS>, 2016.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-21 06:02+0000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=utf-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Generated-By: Babel 2.2.0\n"
#: oslo_middleware/catch_errors.py:40
#, python-format
msgid "An error occurred during processing the request: %s"
msgstr ""

25
oslo_middleware/locale/oslo_middleware.pot
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@ -1,25 +0,0 @@
# Translations template for oslo.middleware.
# Copyright (C) 2016 ORGANIZATION
# This file is distributed under the same license as the oslo.middleware
# project.
# FIRST AUTHOR <EMAIL@ADDRESS>, 2016.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: oslo.middleware 3.7.1.dev18\n"
"Report-Msgid-Bugs-To: https://bugs.launchpad.net/openstack-i18n/\n"
"POT-Creation-Date: 2016-04-21 06:02+0000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=utf-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Generated-By: Babel 2.2.0\n"
#: oslo_middleware/sizelimit.py:59 oslo_middleware/sizelimit.py:73
#: oslo_middleware/sizelimit.py:90
msgid "Request is too large."
msgstr ""

157
oslo_middleware/opts.py
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@ -1,157 +0,0 @@
# Copyright 2014 IBM Corp.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
__all__ = [
'list_opts',
'list_opts_sizelimit',
'list_opts_ssl',
'list_opts_cors',
'list_opts_http_proxy_to_wsgi',
]
import copy
import itertools
from oslo_middleware import cors
from oslo_middleware import http_proxy_to_wsgi
from oslo_middleware import sizelimit
from oslo_middleware import ssl
def list_opts():
"""Return a list of oslo.config options for ALL of the middleware classes.
The returned list includes all oslo.config options which may be registered
at runtime by the library.
Each element of the list is a tuple. The first element is the name of the
group under which the list of elements in the second element will be
registered. A group name of None corresponds to the [DEFAULT] group in
config files.
This function is also discoverable via the 'oslo.middleware' entry point
under the 'oslo.config.opts' namespace.
The purpose of this is to allow tools like the Oslo sample config file
generator to discover the options exposed to users by this library.
:returns: a list of (group_name, opts) tuples
"""
return list(
itertools.chain(
list_opts_sizelimit(),
list_opts_ssl(),
list_opts_cors(),
list_opts_http_proxy_to_wsgi(),
)
)
def list_opts_sizelimit():
"""Return a list of oslo.config options for the sizelimit middleware.
The returned list includes all oslo.config options which may be registered
at runtime by the library.
Each element of the list is a tuple. The first element is the name of the
group under which the list of elements in the second element will be
registered. A group name of None corresponds to the [DEFAULT] group in
config files.
This function is also discoverable via the 'oslo.middleware' entry point
under the 'oslo.config.opts' namespace.
The purpose of this is to allow tools like the Oslo sample config file
generator to discover the options exposed to users by this library.
:returns: a list of (group_name, opts) tuples
"""
return [
('oslo_middleware', copy.deepcopy(sizelimit._opts)),
]
def list_opts_ssl():
"""Return a list of oslo.config options for the SSL middleware.
The returned list includes all oslo.config options which may be registered
at runtime by the library.
Each element of the list is a tuple. The first element is the name of the
group under which the list of elements in the second element will be
registered. A group name of None corresponds to the [DEFAULT] group in
config files.
This function is also discoverable via the 'oslo.middleware' entry point
under the 'oslo.config.opts' namespace.
The purpose of this is to allow tools like the Oslo sample config file
generator to discover the options exposed to users by this library.
:returns: a list of (group_name, opts) tuples
"""
return [
('oslo_middleware', copy.deepcopy(ssl.OPTS)),
]
def list_opts_cors():
"""Return a list of oslo.config options for the cors middleware.
The returned list includes all oslo.config options which may be registered
at runtime by the library.
Each element of the list is a tuple. The first element is the name of the
group under which the list of elements in the second element will be
registered. A group name of None corresponds to the [DEFAULT] group in
config files.
This function is also discoverable via the 'oslo.middleware' entry point
under the 'oslo.config.opts' namespace.
The purpose of this is to allow tools like the Oslo sample config file
generator to discover the options exposed to users by this library.
:returns: a list of (group_name, opts) tuples
"""
return [
('cors', copy.deepcopy(cors.CORS_OPTS)),
('cors.subdomain', copy.deepcopy(cors.CORS_OPTS))
]
def list_opts_http_proxy_to_wsgi():
"""Return a list of oslo.config options for http_proxy_to_wsgi.
The returned list includes all oslo.config options which may be registered
at runtime by the library.
Each element of the list is a tuple. The first element is the name of the
group under which the list of elements in the second element will be
registered. A group name of None corresponds to the [DEFAULT] group in
config files.
This function is also discoverable via the 'oslo.middleware' entry point
under the 'oslo.config.opts' namespace.
The purpose of this is to allow tools like the Oslo sample config file
generator to discover the options exposed to users by this library.
:returns: a list of (group_name, opts) tuples
"""
return [
('oslo_middleware', copy.deepcopy(http_proxy_to_wsgi.OPTS)),
]

40
oslo_middleware/request_id.py
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@ -1,40 +0,0 @@
# Copyright (c) 2013 NEC Corporation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_context import context
import webob.dec
from oslo_middleware import base
ENV_REQUEST_ID = 'openstack.request_id'
HTTP_RESP_HEADER_REQUEST_ID = 'x-openstack-request-id'
class RequestId(base.ConfigurableMiddleware):
"""Middleware that ensures request ID.
It ensures to assign request ID for each API request and set it to
request environment. The request ID is also added to API response.
"""
@webob.dec.wsgify
def __call__(self, req):
req_id = context.generate_request_id()
req.environ[ENV_REQUEST_ID] = req_id
response = req.get_response(self.application)
if HTTP_RESP_HEADER_REQUEST_ID not in response.headers:
response.headers.add(HTTP_RESP_HEADER_REQUEST_ID, req_id)
return response

95
oslo_middleware/sizelimit.py
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@ -1,95 +0,0 @@
# Copyright (c) 2012 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Request Body limiting middleware.
"""
from oslo_config import cfg
import webob.dec
import webob.exc
from oslo_middleware._i18n import _
from oslo_middleware import base
_oldopts = [cfg.DeprecatedOpt('osapi_max_request_body_size',
group='DEFAULT'),
cfg.DeprecatedOpt('max_request_body_size',
group='DEFAULT')]
_opts = [
# default request size is 112k
cfg.IntOpt('max_request_body_size',
default=114688,
help='The maximum body size for each '
' request, in bytes.',
deprecated_opts=_oldopts)
]
class LimitingReader(object):
"""Reader to limit the size of an incoming request."""
def __init__(self, data, limit):
"""Initiates LimitingReader object.
:param data: Underlying data object
:param limit: maximum number of bytes the reader should allow
"""
self.data = data
self.limit = limit
self.bytes_read = 0
def __iter__(self):
for chunk in self.data:
self.bytes_read += len(chunk)
if self.bytes_read > self.limit:
msg = _("Request is too large.")
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
else:
yield chunk
def read(self, i=None):
# NOTE(jamielennox): We can't simply provide the default to the read()
# call as the expected default differs between mod_wsgi and eventlet
if i is None:
result = self.data.read()
else:
result = self.data.read(i)
self.bytes_read += len(result)
if self.bytes_read > self.limit:
msg = _("Request is too large.")
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
return result
class RequestBodySizeLimiter(base.ConfigurableMiddleware):
"""Limit the size of incoming requests."""
def __init__(self, application, conf=None):
super(RequestBodySizeLimiter, self).__init__(application, conf)
self.oslo_conf.register_opts(_opts, group='oslo_middleware')
@webob.dec.wsgify
def __call__(self, req):
max_size = self._conf_get('max_request_body_size')
if (req.content_length is not None and
req.content_length > max_size):
msg = _("Request is too large.")
raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg)
if req.content_length is None and req.is_body_readable:
limiter = LimitingReader(req.body_file, max_size)
req.body_file = limiter
return self.application

48
oslo_middleware/ssl.py
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@ -1,48 +0,0 @@
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing permissions and
# limitations under the License.
from debtcollector import removals
from oslo_config import cfg
from oslo_middleware import base
OPTS = [
cfg.StrOpt('secure_proxy_ssl_header',
default='X-Forwarded-Proto',
deprecated_for_removal=True,
help="The HTTP Header that will be used to determine what "
"the original request protocol scheme was, even if it was "
"hidden by an SSL termination proxy.")
]
removals.removed_module(__name__,
"oslo_middleware.http_proxy_to_wsgi")
class SSLMiddleware(base.ConfigurableMiddleware):
"""SSL termination proxies middleware.
This middleware overloads wsgi.url_scheme with the one provided in
secure_proxy_ssl_header header. This is useful when behind a SSL
termination proxy.
"""
def __init__(self, application, *args, **kwargs):
super(SSLMiddleware, self).__init__(application, *args, **kwargs)
self.oslo_conf.register_opts(OPTS, group='oslo_middleware')
def process_request(self, req):
self.header_name = 'HTTP_{0}'.format(
self._conf_get('secure_proxy_ssl_header').upper()
.replace('-', '_'))
req.environ['wsgi.url_scheme'] = req.environ.get(
self.header_name, req.environ['wsgi.url_scheme'])

0
oslo_middleware/tests/__init__.py
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102
oslo_middleware/tests/test_base.py
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@ -1,102 +0,0 @@
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import webob
from oslo_middleware.base import ConfigurableMiddleware
from oslo_middleware.base import Middleware
from oslotest.base import BaseTestCase
@webob.dec.wsgify
def application(req):
return 'Hello, World!!!'
class TestBase(BaseTestCase):
"""Test the base middleware class."""
def test_extend_with_request(self):
"""Assert that a newer middleware behaves as appropriate.
This tests makes sure that the request is passed to the
middleware's implementation.
"""
# Bootstrap the application
self.application = RequestBase(application)
# Send a request through.
request = webob.Request({}, method='GET')
request.get_response(self.application)
self.assertTrue(self.application.called_with_request)
def test_extend_without_request(self):
"""Assert that an older middleware behaves as appropriate.
This tests makes sure that the request method is NOT passed to the
middleware's implementation, and that there are no other expected
errors.
"""
# Bootstrap the application
self.application = NoRequestBase(application)
# Send a request through.
request = webob.Request({}, method='GET')
request.get_response(self.application)
self.assertTrue(self.application.called_without_request)
def test_no_content_type_added(self):
class TestMiddleware(Middleware):
@staticmethod
def process_request(req):
return "foobar"
m = TestMiddleware(None)
request = webob.Request({}, method='GET')
response = request.get_response(m)
self.assertNotIn('Content-Type', response.headers)
def test_paste_deploy_legacy(self):
app = LegacyMiddlewareTest.factory(
{'global': True}, local=True)(application)
self.assertEqual(app.conf, {})
def test_paste_deploy_configurable(self):
app = ConfigurableMiddlewareTest.factory(
{'global': True}, local=True)(application)
self.assertEqual(app.conf, {'global': True, 'local': True})
class NoRequestBase(Middleware):
"""Test middleware, implements old model."""
def process_response(self, response):
self.called_without_request = True
return response
class RequestBase(Middleware):
"""Test middleware, implements new model."""
def process_response(self, response, request):
self.called_with_request = True
return response
class ConfigurableMiddlewareTest(ConfigurableMiddleware):
pass
class LegacyMiddlewareTest(Middleware):
pass

47
oslo_middleware/tests/test_catch_errors.py
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@ -1,47 +0,0 @@
# Copyright (c) 2013 NEC Corporation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from oslotest import base as test_base
import webob.dec
import webob.exc
from oslo_middleware import catch_errors
class CatchErrorsTest(test_base.BaseTestCase):
def _test_has_request_id(self, application, expected_code=None):
app = catch_errors.CatchErrors(application)
req = webob.Request.blank('/test')
res = req.get_response(app)
self.assertEqual(expected_code, res.status_int)
def test_success_response(self):
@webob.dec.wsgify
def application(req):
return 'Hello, World!!!'
self._test_has_request_id(application, webob.exc.HTTPOk.code)
def test_internal_server_error(self):
@webob.dec.wsgify
def application(req):
raise Exception()
with mock.patch.object(catch_errors.LOG, 'exception') as log_exc:
self._test_has_request_id(application,
webob.exc.HTTPInternalServerError.code)
self.assertEqual(1, log_exc.call_count)

53
oslo_middleware/tests/test_correlation_id.py
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@ -1,53 +0,0 @@
# Copyright (c) 2013 Rackspace Hosting
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import uuid
import mock
from oslotest import base as test_base
from oslotest import moxstubout
from oslo_middleware import correlation_id
class CorrelationIdTest(test_base.BaseTestCase):
def setUp(self):
super(CorrelationIdTest, self).setUp()
self.stubs = self.useFixture(moxstubout.MoxStubout()).stubs
def test_process_request(self):
app = mock.Mock()
req = mock.Mock()
req.headers = {}
mock_uuid4 = mock.Mock()
mock_uuid4.return_value = "fake_uuid"
self.stubs.Set(uuid, 'uuid4', mock_uuid4)
middleware = correlation_id.CorrelationId(app)
middleware(req)
self.assertEqual(req.headers.get("X_CORRELATION_ID"), "fake_uuid")
def test_process_request_should_not_regenerate_correlation_id(self):
app = mock.Mock()
req = mock.Mock()
req.headers = {"X_CORRELATION_ID": "correlation_id"}
middleware = correlation_id.CorrelationId(app)
middleware(req)
self.assertEqual(req.headers.get("X_CORRELATION_ID"), "correlation_id")

1371
oslo_middleware/tests/test_cors.py
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38
oslo_middleware/tests/test_entry_points.py
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@ -1,38 +0,0 @@
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslotest import base
import stevedore
from testtools import matchers
class TestPasteDeploymentEntryPoints(base.BaseTestCase):
def test_entry_points(self):
factory_classes = {
'catch_errors': 'CatchErrors',
'correlation_id': 'CorrelationId',
'cors': 'CORS',
'debug': 'Debug',
'healthcheck': 'Healthcheck',
'http_proxy_to_wsgi': 'HTTPProxyToWSGI',
'request_id': 'RequestId',
'sizelimit': 'RequestBodySizeLimiter',
'ssl': 'SSLMiddleware',
}
em = stevedore.ExtensionManager('paste.filter_factory')
# Ensure all the factories are defined by their names
factory_names = [extension.name for extension in em]
self.assertThat(factory_names,
matchers.ContainsAll(factory_classes))

189
oslo_middleware/tests/test_healthcheck.py
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@ -1,189 +0,0 @@
# Copyright (c) 2013 NEC Corporation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import threading
import time
import mock
from oslotest import base as test_base
import requests
import webob.dec
import webob.exc
from oslo_middleware import healthcheck
from oslo_middleware.healthcheck import __main__
class HealthcheckMainTests(test_base.BaseTestCase):
def test_startup_response(self):
server = __main__.create_server(0)
th = threading.Thread(target=server.serve_forever)
th.start()
self.addCleanup(server.shutdown)
while True:
try:
# Connecting on 0.0.0.0 is not allowed on windows
# The operating system will return WSAEADDRNOTAVAIL which
# in turn will throw a requests.ConnectionError
r = requests.get("http://127.0.0.1:%s" % (
server.server_address[1]))
except requests.ConnectionError:
# Server hasn't started up yet, try again in a few.
time.sleep(1)
else:
self.assertEqual(200, r.status_code)
break
class HealthcheckTests(test_base.BaseTestCase):
@staticmethod
@webob.dec.wsgify
def application(req):
return 'Hello, World!!!'
def _do_test_request(self, conf={}, path='/healthcheck',
accept='text/plain', method='GET',
server_port=80):
self.app = healthcheck.Healthcheck(self.application, conf)
req = webob.Request.blank(path, accept=accept, method=method)
req.server_port = server_port
res = req.get_response(self.app)
return res
def _do_test(self, conf={}, path='/healthcheck',
expected_code=webob.exc.HTTPOk.code,
expected_body=b'', accept='text/plain',
method='GET', server_port=80):
res = self._do_test_request(conf=conf, path=path,
accept=accept, method=method,
server_port=server_port)
self.assertEqual(expected_code, res.status_int)
self.assertEqual(expected_body, res.body)
def test_default_path_match(self):
self._do_test()
def test_default_path_not_match(self):
self._do_test(path='/toto', expected_body=b'Hello, World!!!')
def test_configured_path_match(self):
conf = {'path': '/hidden_healthcheck'}
self._do_test(conf, path='/hidden_healthcheck')
def test_configured_path_not_match(self):
conf = {'path': '/hidden_healthcheck'}
self._do_test(conf, path='/toto', expected_body=b'Hello, World!!!')
@mock.patch('oslo_middleware.healthcheck.disable_by_file.LOG')
def test_disablefile_unconfigured(self, fake_log):
fake_warn = fake_log.warning
conf = {'backends': 'disable_by_file'}
self._do_test(conf, expected_body=b'OK')
self.assertIn('disable_by_file', self.app._backends.names())
fake_warn.assert_called_once_with(
'DisableByFile healthcheck middleware '
'enabled without disable_by_file_path '
'set'
)
def test_disablefile_enabled(self):
conf = {'backends': 'disable_by_file',
'disable_by_file_path': '/foobar'}
self._do_test(conf, expected_body=b'OK')
self.assertIn('disable_by_file', self.app._backends.names())
def test_disablefile_enabled_head(self):
conf = {'backends': 'disable_by_file',
'disable_by_file_path': '/foobar'}
self._do_test(conf, expected_body=b'', method='HEAD',
expected_code=webob.exc.HTTPNoContent.code)
def test_disablefile_enabled_html_detailed(self):
conf = {'backends': 'disable_by_file',
'disable_by_file_path': '/foobar', 'detailed': True}
res = self._do_test_request(conf, accept="text/html")
self.assertIn(b'Result of 1 checks:', res.body)
self.assertIn(b'<TD>OK</TD>', res.body)
self.assertEqual(webob.exc.HTTPOk.code, res.status_int)
def test_disablefile_disabled(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_file',
'disable_by_file_path': filename}
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'DISABLED BY FILE')
self.assertIn('disable_by_file', self.app._backends.names())
def test_disablefile_disabled_head(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_file',
'disable_by_file_path': filename}
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'', method='HEAD')
self.assertIn('disable_by_file', self.app._backends.names())
def test_disablefile_disabled_html_detailed(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_file',
'disable_by_file_path': filename, 'detailed': True}
res = self._do_test_request(conf, accept="text/html")
self.assertIn(b'<TD>DISABLED BY FILE</TD>', res.body)
self.assertEqual(webob.exc.HTTPServiceUnavailable.code,
res.status_int)
def test_two_backends(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_file,disable_by_file',
'disable_by_file_path': filename}
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'DISABLED BY FILE\nDISABLED BY FILE')
self.assertIn('disable_by_file', self.app._backends.names())
def test_disable_by_port_file(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_files_ports',
'disable_by_file_paths': "80:%s" % filename}
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'DISABLED BY FILE')
self.assertIn('disable_by_files_ports', self.app._backends.names())
def test_no_disable_by_port_file(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
conf = {'backends': 'disable_by_files_ports',
'disable_by_file_paths': "8000:%s" % filename}
self._do_test(conf,
expected_code=webob.exc.HTTPOk.code,
expected_body=b'OK')
self.assertIn('disable_by_files_ports', self.app._backends.names())
def test_disable_by_port_many_files(self):
filename = self.create_tempfiles([('test', 'foobar')])[0]
filename2 = self.create_tempfiles([('test2', 'foobar2')])[0]
conf = {'backends': 'disable_by_files_ports',
'disable_by_file_paths': "80:%s,81:%s" % (filename, filename2)}
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'DISABLED BY FILE')
self._do_test(conf,
expected_code=webob.exc.HTTPServiceUnavailable.code,
expected_body=b'DISABLED BY FILE',
server_port=81)
self.assertIn('disable_by_files_ports', self.app._backends.names())

131
oslo_middleware/tests/test_http_proxy_to_wsgi.py
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@ -1,131 +0,0 @@
# Copyright (c) 2015 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from wsgiref import util
from oslotest import base as test_base
import webob
from oslo_middleware import http_proxy_to_wsgi
class TestHTTPProxyToWSGI(test_base.BaseTestCase):
def setUp(self):
super(TestHTTPProxyToWSGI, self).setUp()
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGI(fake_app)
self.middleware.oslo_conf.set_override('enable_proxy_headers_parsing',
True,
group='oslo_middleware',
enforce_type=True)
self.request = webob.Request.blank('/foo/bar', method='POST')
def test_backward_compat(self):
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGIMiddleware(
fake_app)
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_no_headers(self):
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_url_translate_ssl(self):
self.request.headers['X-Forwarded-Proto'] = "https"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://localhost:80/", response.body)
def test_url_translate_ssl_port(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "example.com:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:123/", response.body)
def test_url_translate_host_ipv6(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "[f00:b4d::1]:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://[f00:b4d::1]:123/", response.body)
def test_url_translate_base(self):
self.request.headers['X-Forwarded-Prefix'] = "/bla"
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/bla", response.body)
def test_url_translate_port_and_base_and_proto_and_host(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Prefix'] = "/bla"
self.request.headers['X-Forwarded-Host'] = "example.com:8043"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:8043/bla", response.body)
def test_rfc7239_invalid(self):
self.request.headers['Forwarded'] = (
"iam=anattacker;metoo, I will crash you!!P;m,xx")
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_rfc7239_proto(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https, for=foobaz;proto=http")
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://localhost:80/", response.body)
def test_rfc7239_proto_host(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https;host=example.com, for=foobaz;proto=http")
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com/", response.body)
def test_rfc7239_proto_host_base(self):
self.request.headers['Forwarded'] = (
"for=foobar;proto=https;host=example.com:8043, for=foobaz")
self.request.headers['X-Forwarded-Prefix'] = "/bla"
response = self.request.get_response(self.middleware)
self.assertEqual(b"https://example.com:8043/bla", response.body)
class TestHTTPProxyToWSGIDisabled(test_base.BaseTestCase):
def setUp(self):
super(TestHTTPProxyToWSGIDisabled, self).setUp()
@webob.dec.wsgify()
def fake_app(req):
return util.application_uri(req.environ)
self.middleware = http_proxy_to_wsgi.HTTPProxyToWSGI(fake_app)
self.middleware.oslo_conf.set_override('enable_proxy_headers_parsing',
False,
group='oslo_middleware',
enforce_type=True)
self.request = webob.Request.blank('/foo/bar', method='POST')
def test_no_headers(self):
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)
def test_url_translate_ssl_has_no_effect(self):
self.request.headers['X-Forwarded-Proto'] = "https"
self.request.headers['X-Forwarded-Host'] = "example.com:123"
response = self.request.get_response(self.middleware)
self.assertEqual(b"http://localhost:80/", response.body)

31
oslo_middleware/tests/test_opts.py
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@ -1,31 +0,0 @@
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_middleware import opts
from oslotest.base import BaseTestCase
class TestOptionDiscovery(BaseTestCase):
def test_all(self):
opts.list_opts()
def test_sizelimit(self):
opts.list_opts_sizelimit()
def test_cors(self):
opts.list_opts_cors()
def test_ssl(self):
opts.list_opts_ssl()

39
oslo_middleware/tests/test_request_id.py
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@ -1,39 +0,0 @@
# Copyright (c) 2013 NEC Corporation
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslotest import base as test_base
from testtools import matchers
import webob
import webob.dec
from oslo_middleware import request_id
class RequestIdTest(test_base.BaseTestCase):
def test_generate_request_id(self):
@webob.dec.wsgify
def application(req):
return req.environ[request_id.ENV_REQUEST_ID]
app = request_id.RequestId(application)
req = webob.Request.blank('/test')
res = req.get_response(app)
res_req_id = res.headers.get(request_id.HTTP_RESP_HEADER_REQUEST_ID)
if isinstance(res_req_id, bytes):
res_req_id = res_req_id.decode('utf-8')
self.assertThat(res_req_id, matchers.StartsWith('req-'))
# request-id in request environ is returned as response body
self.assertEqual(res_req_id, res.body.decode('utf-8'))

108
oslo_middleware/tests/test_sizelimit.py
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@ -1,108 +0,0 @@
# Copyright (c) 2012 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_config import fixture as config
from oslotest import base as test_base
import six
import webob
from oslo_middleware import sizelimit
class TestLimitingReader(test_base.BaseTestCase):
def test_limiting_reader(self):
BYTES = 1024
bytes_read = 0
data = six.StringIO("*" * BYTES)
for chunk in sizelimit.LimitingReader(data, BYTES):
bytes_read += len(chunk)
self.assertEqual(bytes_read, BYTES)
bytes_read = 0
data = six.StringIO("*" * BYTES)
reader = sizelimit.LimitingReader(data, BYTES)
byte = reader.read(1)
while len(byte) != 0:
bytes_read += 1
byte = reader.read(1)
self.assertEqual(bytes_read, BYTES)
def test_read_default_value(self):
BYTES = 1024
data_str = "*" * BYTES
data = six.StringIO(data_str)
reader = sizelimit.LimitingReader(data, BYTES)
res = reader.read()
self.assertEqual(data_str, res)
def test_limiting_reader_fails(self):
BYTES = 1024
def _consume_all_iter():
bytes_read = 0
data = six.StringIO("*" * BYTES)
for chunk in sizelimit.LimitingReader(data, BYTES - 1):
bytes_read += len(chunk)
self.assertRaises(webob.exc.HTTPRequestEntityTooLarge,
_consume_all_iter)
def _consume_all_read():
bytes_read = 0
data = six.StringIO("*" * BYTES)
reader = sizelimit.LimitingReader(data, BYTES - 1)
byte = reader.read(1)
while len(byte) != 0:
bytes_read += 1
byte = reader.read(1)
self.assertRaises(webob.exc.HTTPRequestEntityTooLarge,
_consume_all_read)
class TestRequestBodySizeLimiter(test_base.BaseTestCase):
def setUp(self):
super(TestRequestBodySizeLimiter, self).setUp()
self.useFixture(config.Config())
@webob.dec.wsgify()
def fake_app(req):
return webob.Response(req.body)
self.middleware = sizelimit.RequestBodySizeLimiter(fake_app)
self.MAX_REQUEST_BODY_SIZE = (
self.middleware.oslo_conf.oslo_middleware.max_request_body_size)
self.request = webob.Request.blank('/', method='POST')
def test_content_length_acceptable(self):
self.request.headers['Content-Length'] = self.MAX_REQUEST_BODY_SIZE
self.request.body = b"0" * self.MAX_REQUEST_BODY_SIZE
response = self.request.get_response(self.middleware)
self.assertEqual(response.status_int, 200)
def test_content_length_too_large(self):
self.request.headers['Content-Length'] = self.MAX_REQUEST_BODY_SIZE + 1
self.request.body = b"0" * (self.MAX_REQUEST_BODY_SIZE + 1)
response = self.request.get_response(self.middleware)
self.assertEqual(response.status_int, 413)
def test_request_too_large_no_content_length(self):
self.request.body = b"0" * (self.MAX_REQUEST_BODY_SIZE + 1)
self.request.headers['Content-Length'] = None
response = self.request.get_response(self.middleware)
self.assertEqual(response.status_int, 413)

57
oslo_middleware/tests/test_ssl.py
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@ -1,57 +0,0 @@
# Copyright (c) 2015 Thales Services SAS
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_config import fixture as config
from oslotest import base
import webob
from oslo_middleware import ssl
class SSLMiddlewareTest(base.BaseTestCase):
def setUp(self):
super(SSLMiddlewareTest, self).setUp()
self.useFixture(config.Config())
def _test_scheme(self, expected, headers, secure_proxy_ssl_header=None):
middleware = ssl.SSLMiddleware(None)
if secure_proxy_ssl_header:
middleware.oslo_conf.set_override(
'secure_proxy_ssl_header', secure_proxy_ssl_header,
group='oslo_middleware', enforce_type=True)
request = webob.Request.blank('http://example.com/', headers=headers)
# Ensure ssl middleware does not stop pipeline execution
self.assertIsNone(middleware.process_request(request))
self.assertEqual(expected, request.scheme)
def test_without_forwarded_protocol(self):
self._test_scheme('http', {})
def test_with_forwarded_protocol(self):
headers = {'X-Forwarded-Proto': 'https'}
self._test_scheme('https', headers)
def test_with_custom_header(self):
headers = {'X-Forwarded-Proto': 'https'}
self._test_scheme('http', headers,
secure_proxy_ssl_header='X-My-Header')
def test_with_custom_header_and_forwarded_protocol(self):
headers = {'X-My-Header': 'https'}
self._test_scheme('https', headers,
secure_proxy_ssl_header='X-My-Header')

14
requirements.txt
View File

@ -1,14 +0,0 @@
# The order of packages is significant, because pip processes them in the order
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
pbr>=1.6 # Apache-2.0
Jinja2>=2.8 # BSD License (3 clause)
oslo.config>=3.14.0 # Apache-2.0
oslo.context>=2.4.0 # Apache-2.0
oslo.i18n>=2.1.0 # Apache-2.0
oslo.utils>=3.16.0 # Apache-2.0
six>=1.9.0 # MIT
stevedore>=1.16.0 # Apache-2.0
WebOb>=1.2.3 # MIT
debtcollector>=1.2.0 # Apache-2.0

74
setup.cfg
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@ -1,74 +0,0 @@
[metadata]
name = oslo.middleware
summary = Oslo Middleware library
description-file =
README.rst
author = OpenStack
author-email = openstack-dev@lists.openstack.org
home-page = http://wiki.openstack.org/wiki/Oslo#oslo.middleware
classifier =
Environment :: OpenStack
Intended Audience :: Information Technology
Intended Audience :: System Administrators
License :: OSI Approved :: Apache Software License
Operating System :: POSIX :: Linux
Programming Language :: Python
Programming Language :: Python :: 2
Programming Language :: Python :: 2.7
Programming Language :: Python :: 3
Programming Language :: Python :: 3.4
[files]
packages =
oslo_middleware
[entry_points]
oslo.config.opts =
oslo.middleware = oslo_middleware.opts:list_opts
oslo.middleware.cors = oslo_middleware.opts:list_opts_cors
oslo.middleware.sizelimit = oslo_middleware.opts:list_opts_sizelimit
oslo.middleware.ssl = oslo_middleware.opts:list_opts_ssl
oslo.middleware.http_proxy_to_wsgi = oslo_middleware.opts:list_opts_http_proxy_to_wsgi
oslo.middleware.healthcheck =
disable_by_file = oslo_middleware.healthcheck.disable_by_file:DisableByFileHealthcheck
disable_by_files_ports = oslo_middleware.healthcheck.disable_by_file:DisableByFilesPortsHealthcheck
paste.filter_factory =
catch_errors = oslo_middleware:CatchErrors.factory
correlation_id = oslo_middleware:CorrelationId.factory
cors = oslo_middleware:CORS.factory
debug = oslo_middleware:Debug.factory
healthcheck = oslo_middleware:Healthcheck.factory
http_proxy_to_wsgi = oslo_middleware:HTTPProxyToWSGI.factory
request_id = oslo_middleware:RequestId.factory
sizelimit = oslo_middleware:RequestBodySizeLimiter.factory
ssl = oslo_middleware:SSLMiddleware.factory
[build_sphinx]
source-dir = doc/source
build-dir = doc/build
all_files = 1
[upload_sphinx]
upload-dir = doc/build/html
[compile_catalog]
directory = oslo_middleware/locale
domain = oslo_middleware
[update_catalog]
domain = oslo_middleware
output_dir = oslo_middleware/locale
input_file = oslo_middleware/locale/oslo_middleware.pot
[extract_messages]
keywords = _ gettext ngettext l_ lazy_gettext
mapping_file = babel.cfg
output_file = oslo_middleware/locale/oslo_middleware.pot
[pbr]
warnerrors = True
[wheel]
universal = 1

29
setup.py
View File

@ -1,29 +0,0 @@
# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
import setuptools
# In python < 2.7.4, a lazy loading of package `pbr` will break
# setuptools if some other modules registered functions in `atexit`.
# solution from: http://bugs.python.org/issue15881#msg170215
try:
import multiprocessing # noqa
except ImportError:
pass
setuptools.setup(
setup_requires=['pbr>=1.8'],
pbr=True)

12
test-requirements.txt
View File

@ -1,12 +0,0 @@
# The order of packages is significant, because pip processes them in the order
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
fixtures>=3.0.0 # Apache-2.0/BSD
hacking<0.11,>=0.10.0
mock>=2.0 # BSD
oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
oslotest>=1.10.0 # Apache-2.0
sphinx!=1.3b1,<1.3,>=1.2.1 # BSD
testtools>=1.4.0 # MIT
coverage>=3.6 # Apache-2.0

37
tox.ini
View File

@ -1,37 +0,0 @@
[tox]
minversion = 1.6
envlist = py34,py27,pypy,pep8
[testenv]
deps = -r{toxinidir}/test-requirements.txt
commands = python setup.py testr --slowest --testr-args='{posargs}'
[testenv:pep8]
commands = flake8
[testenv:venv]
commands = {posargs}
[testenv:docs]
commands = python setup.py build_sphinx
[testenv:cover]
commands = python setup.py test --coverage --coverage-package-name=oslo_middleware --testr-args='{posargs}'
[flake8]
# E123, E125 skipped as they are invalid PEP-8.
show-source = True
ignore = E123,E125
exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,__init__.py
[hacking]
import_exceptions = oslo_middleware._i18n
[testenv:pip-missing-reqs]
# do not install test-requirements as that will pollute the virtualenv for
# determining missing packages
# this also means that pip-missing-reqs must be installed separately, outside
# of the requirements.txt files
deps = pip_missing_reqs
commands = pip-missing-reqs -d --ignore-module=oslo_middleware* --ignore-module=pkg_resources --ignore-file=oslo_middleware/tests/* oslo_middleware