100 lines
3.0 KiB
Python
100 lines
3.0 KiB
Python
# Copyright 2015 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# Author: Endre Karlson <endre.karlson@hpe.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.
|
|
from oslo_log import log as logging
|
|
import oslo_messaging as messaging
|
|
|
|
from designate.central import rpcapi
|
|
import designate.conf
|
|
from designate import coordination
|
|
from designate import exceptions
|
|
from designate.producer import tasks
|
|
from designate import service
|
|
|
|
|
|
CONF = designate.conf.CONF
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
NS = 'designate.periodic_tasks'
|
|
|
|
|
|
class Service(service.RPCService):
|
|
RPC_API_VERSION = '1.0'
|
|
|
|
target = messaging.Target(version=RPC_API_VERSION)
|
|
|
|
def __init__(self):
|
|
self._partitioner = None
|
|
|
|
self._storage = None
|
|
self._quota = None
|
|
|
|
super().__init__(
|
|
self.service_name, CONF['service:producer'].topic,
|
|
threads=CONF['service:producer'].threads,
|
|
)
|
|
|
|
self.coordination = coordination.Coordination(
|
|
self.service_name, self.tg, grouping_enabled=True
|
|
)
|
|
|
|
@property
|
|
def service_name(self):
|
|
return 'producer'
|
|
|
|
@property
|
|
def central_api(self):
|
|
return rpcapi.CentralAPI.get_instance()
|
|
|
|
def start(self):
|
|
super().start()
|
|
self.coordination.start()
|
|
|
|
self._partitioner = coordination.Partitioner(
|
|
self.coordination.coordinator, self.service_name,
|
|
self.coordination.coordination_id, range(0, 4096)
|
|
)
|
|
|
|
self._partitioner.start()
|
|
self._partitioner.watch_partition_change(self._rebalance)
|
|
|
|
enabled_tasks = tasks.PeriodicTask.get_extensions(
|
|
CONF['service:producer'].enabled_tasks
|
|
)
|
|
if not enabled_tasks:
|
|
raise exceptions.ConfigurationError(
|
|
'No periodic tasks found matching: %s' %
|
|
CONF['service:producer'].enabled_tasks
|
|
)
|
|
for task in enabled_tasks:
|
|
LOG.debug('Registering task %s', task)
|
|
|
|
# Instantiate the task
|
|
task = task()
|
|
|
|
# Subscribe for partition size updates.
|
|
self._partitioner.watch_partition_change(task.on_partition_change)
|
|
|
|
interval = CONF[task.get_canonical_name()].interval
|
|
self.tg.add_timer(interval, task)
|
|
|
|
def stop(self, graceful=True):
|
|
super().stop(graceful)
|
|
self.coordination.stop()
|
|
|
|
def _rebalance(self, my_partitions, members, event):
|
|
LOG.info('Received rebalance event %s', event)
|
|
self.partition_range = my_partitions
|