designate/designate/zone_manager/tasks.py

112 lines
3.4 KiB
Python

# Copyright 2015 Hewlett-Packard Development Company, L.P.
#
# Author: Endre Karlson <endre.karlson@hp.com>
#
# 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
from designate import context
from designate import plugin
from designate import rpc
from designate.central import rpcapi
from designate.i18n import _LI
from oslo_config import cfg
from oslo_log import log as logging
from oslo_utils import timeutils
LOG = logging.getLogger(__name__)
class PeriodicTask(plugin.ExtensionPlugin):
__plugin_ns__ = 'designate.zone_manager_tasks'
__plugin_type__ = 'zone_manager_task'
__interval__ = None
def __init__(self):
self.my_partitions = None
self.options = cfg.CONF[self.get_canonical_name()]
@classmethod
def get_base_opts(cls):
return [cfg.IntOpt('interval', default=cls.__interval__)]
def on_partition_change(self, my_partitions, members, event):
self.my_partitions = my_partitions
def _my_range(self):
return self.my_partitions[0], self.my_partitions[-1]
def _filter_between(self, col):
return {col: "BETWEEN %s,%s" % self._my_range()}
class PeriodicExistsTask(PeriodicTask):
__plugin_name__ = 'periodic_exists'
__interval__ = 3600
def __init__(self):
super(PeriodicExistsTask, self).__init__()
self.notifier = rpc.get_notifier('zone_manager')
@classmethod
def get_cfg_opts(cls):
group = cfg.OptGroup(cls.get_canonical_name())
options = cls.get_base_opts() + [
cfg.IntOpt('per_page', default=100)
]
return [(group, options)]
@property
def central_api(self):
return rpcapi.CentralAPI.get_instance()
@staticmethod
def _get_period(seconds):
interval = datetime.timedelta(seconds=seconds)
end = timeutils.utcnow()
return end - interval, end
def __call__(self):
pstart, pend = self._my_range()
msg = _LI("Emitting zone exist events for %(start)s to %(end)s")
LOG.info(msg % {"start": pstart, "end": pend})
ctxt = context.DesignateContext.get_admin_context()
ctxt.all_tenants = True
criterion = self._filter_between('shard')
start, end = self._get_period(self.options.interval)
data = {
"audit_period_start": str(start),
"audit_period_end": str(end)
}
marker = None
while True:
zones = self.central_api.find_domains(ctxt, criterion,
marker=marker,
limit=self.options.per_page)
if len(zones) == 0:
LOG.info(_LI("Finished emitting events."))
break
else:
marker = zones.objects[-1].id
for zone in zones:
zone_data = dict(zone)
zone_data.update(data)
self.notifier.info(ctxt, 'dns.domain.exists', zone_data)