8892801205
- Add PEP8 section to tox.ini - Add hacking to requirements to enforce OpenStack style requirements - Fix large number of formatting issues flagged by flake8 check - Add copyright notices to all remaining files - Fix bug in trigger_manager related to logging calls - Add .gitignore file Change-Id: I755ab9c8bcc436836f9006fcd671408cc77214c4
82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
# Copyright (c) 2014 Dark Secret Software Inc.
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# Copyright (c) 2015 Rackspace
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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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import datetime
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import dateutil.parser
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import logging
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import time
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import requests
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logger = logging.getLogger(__name__)
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class TimeSync(object):
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def __init__(self, config={}, publishes=False):
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url = config.get('time_sync_endpoint')
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self.endpoint = None
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if url:
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self.endpoint = "%s/time" % url
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logger.debug("Time sync endpoint=%s" % self.endpoint)
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self.last_update = None
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self.last_tyme = self._get_now()
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self.publishes = publishes
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def _get_now(self):
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# Broken out for testing
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return datetime.datetime.utcnow()
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def _should_update(self, now):
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return (not self.last_update or (now - self.last_update).seconds > 20)
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def _fetch(self):
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while True:
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tyme = requests.get(self.endpoint).text
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if tyme and tyme != "None":
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return tyme
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logger.debug("No time published yet. Waiting ...")
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time.sleep(1)
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def current_time(self):
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now = self._get_now()
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if not self.endpoint:
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return now
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if not self.publishes and self._should_update(now):
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try:
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tyme = self._fetch()
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logger.debug("Requested time, got '%s'" % tyme)
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self.last_tyme = dateutil.parser.parse(tyme)
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except Exception as e:
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logger.exception("Could not get time: %s" % e)
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self.last_update = now
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return self.last_tyme
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def publish(self, tyme):
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if not self.endpoint:
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return
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daittyme = dateutil.parser.parse(tyme)
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self.last_tyme = daittyme
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if self._should_update(daittyme):
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self.last_update = daittyme
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try:
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requests.post(self.endpoint, data=tyme)
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logger.debug("Published time: %s" % tyme)
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except Exception as e:
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logger.exception("Could not publish time: %s" % e)
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