716b4e722c
As far as proxies usage is concerned, keystone-client API and swift-client API behave differently because the former uses python Request library while the latter uses raw httplib. As a result, Keystone authentication honors environment variables http_proxy, https_proxy and no_proxy while Swift doesn't. This patch, which code is mainly borrowed from Python Requests, makes Swift data connections and Swift authentication connections behaving homogeneously. Change-Id: Ic8a0089c35c458d7ed96e572e22429014298fe4c
108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
# Copyright (c) 2010-2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Miscellaneous utility functions for use with Swift."""
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import sys
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import os
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_ver = sys.version_info
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#: Python 2.x?
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is_py2 = (_ver[0] == 2)
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#: Python 3.x?
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is_py3 = (_ver[0] == 3)
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if is_py2:
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from urllib import getproxies, proxy_bypass
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elif is_py3:
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from urllib.request import getproxies, proxy_bypass
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TRUE_VALUES = set(('true', '1', 'yes', 'on', 't', 'y'))
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def config_true_value(value):
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"""
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Returns True if the value is either True or a string in TRUE_VALUES.
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Returns False otherwise.
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This function come from swift.common.utils.config_true_value()
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"""
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return value is True or \
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(isinstance(value, basestring) and value.lower() in TRUE_VALUES)
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def prt_bytes(bytes, human_flag):
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"""
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convert a number > 1024 to printable format, either in 4 char -h format as
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with ls -lh or return as 12 char right justified string
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"""
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if human_flag:
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suffix = ''
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mods = list('KMGTPEZY')
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temp = float(bytes)
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if temp > 0:
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while (temp > 1023):
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try:
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suffix = mods.pop(0)
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except IndexError:
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break
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temp /= 1024.0
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if suffix != '':
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if temp >= 10:
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bytes = '%3d%s' % (temp, suffix)
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else:
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bytes = '%.1f%s' % (temp, suffix)
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if suffix == '': # must be < 1024
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bytes = '%4s' % bytes
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else:
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bytes = '%12s' % bytes
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return(bytes)
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# get_environ_proxies function, borrowed from python Requests
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# (www.python-requests.org)
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def get_environ_proxies(netloc):
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"""Return a dict of environment proxies."""
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get_proxy = lambda k: os.environ.get(k) or os.environ.get(k.upper())
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# First check whether no_proxy is defined. If it is, check that the URL
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# we're getting isn't in the no_proxy list.
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no_proxy = get_proxy('no_proxy')
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if no_proxy:
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# We need to check whether we match here. We need to see if we match
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# the end of the netloc, both with and without the port.
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no_proxy = no_proxy.replace(' ', '').split(',')
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for host in no_proxy:
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if netloc.endswith(host) or netloc.split(':')[0].endswith(host):
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# The URL does match something in no_proxy, so we don't want
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# to apply the proxies on this URL.
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return {}
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# If the system proxy settings indicate that this URL should be bypassed,
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# don't proxy.
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if proxy_bypass(netloc):
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return {}
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# If we get here, we either didn't have no_proxy set or we're not going
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# anywhere that no_proxy applies to, and the system settings don't require
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# bypassing the proxy for the current URL.
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return getproxies()
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