keystoneauth/keystoneauth1/_utils.py
Alex Oughton e3009ab365 Disables TCP_KEEPCNT when using Windows Subsystem for Linux
The Windows Subsystem for Linux is not a complete implementation
of the Linux APIs, and setting TCP_KEEPCNT is currently
unimplmenented. Attempting to use this option will cause HTTP
connections to fail. This change checks if we are running under
WSL, and disables changing TCP_KEEPCNT parameters if so.

Change-Id: Ic8b41dea2a75660d9adbce88a00a0fe703a4d120
Closes-Bug: #1614688
2016-08-23 03:36:45 +00:00

84 lines
2.4 KiB
Python

# 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 datetime
import logging
import iso8601
import six
def get_logger(name):
name = name.replace(__name__.split('.')[0], 'keystoneauth')
return logging.getLogger(name)
logger = get_logger(__name__)
def normalize_time(timestamp):
"""Normalize time in arbitrary timezone to UTC naive object."""
offset = timestamp.utcoffset()
if offset is None:
return timestamp
return timestamp.replace(tzinfo=None) - offset
def parse_isotime(timestr):
"""Parse time from ISO 8601 format."""
try:
return iso8601.parse_date(timestr)
except iso8601.ParseError as e:
raise ValueError(six.text_type(e))
except TypeError as e:
raise ValueError(six.text_type(e))
def from_utcnow(**timedelta_kwargs):
r"""Calculate the time in the future from utcnow.
:param \*\*timedelta_kwargs:
Passed directly to :class:`datetime.timedelta` to add to the current
time in UTC.
:returns:
The time in the future based on ``timedelta_kwargs``.
:rtype:
datetime.datetime
"""
now = datetime.datetime.utcnow()
delta = datetime.timedelta(**timedelta_kwargs)
return now + delta
def before_utcnow(**timedelta_kwargs):
r"""Calculate the time in the past from utcnow.
:param \*\*timedelta_kwargs:
Passed directly to :class:`datetime.timedelta` to subtract from the
current time in UTC.
:returns:
The time in the past based on ``timedelta_kwargs``.
:rtype:
datetime.datetime
"""
now = datetime.datetime.utcnow()
delta = datetime.timedelta(**timedelta_kwargs)
return now - delta
# Detect if running on the Windows Subsystem for Linux
try:
with open('/proc/version', 'r') as f:
is_windows_linux_subsystem = 'microsoft' in f.read().lower()
except IOError:
is_windows_linux_subsystem = False