Source code for glance.common.timeutils
# 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.
"""
Time related utilities and helper functions.
"""
from oslo_utils import timeutils
# ISO 8601 extended time format with microseconds
_ISO8601_TIME_FORMAT_SUBSECOND = '%Y-%m-%dT%H:%M:%S.%f'
_ISO8601_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S'
PERFECT_TIME_FORMAT = _ISO8601_TIME_FORMAT_SUBSECOND
[docs]
def isotime(at=None, subsecond=False):
"""Stringify time in ISO 8601 format."""
if not at:
at = timeutils.utcnow()
st = at.strftime(_ISO8601_TIME_FORMAT
if not subsecond
else _ISO8601_TIME_FORMAT_SUBSECOND)
tz = at.tzinfo.tzname(None) if at.tzinfo else 'UTC'
# Need to handle either iso8601 or python UTC format
st += ('Z' if tz in ['UTC', 'UTC+00:00'] else tz)
return st