65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
# Copyright 2014 Rackspace
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import cotyledon
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from oslo_log import log as logging
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import oslo_messaging as messaging
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from oslo_messaging.rpc import dispatcher
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from octavia.common import rpc
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from octavia.controller.queue.v1 import endpoints
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LOG = logging.getLogger(__name__)
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class ConsumerService(cotyledon.Service):
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def __init__(self, worker_id, conf):
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super(ConsumerService, self).__init__(worker_id)
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self.conf = conf
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self.topic = conf.oslo_messaging.topic
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self.server = conf.host
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self.endpoints = []
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self.access_policy = dispatcher.DefaultRPCAccessPolicy
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self.message_listener = None
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def run(self):
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LOG.info('Starting consumer...')
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target = messaging.Target(topic=self.topic, server=self.server,
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fanout=False)
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self.endpoints = [endpoints.Endpoints()]
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self.message_listener = rpc.get_server(
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target, self.endpoints,
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executor='threading',
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access_policy=self.access_policy
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)
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self.message_listener.start()
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def terminate(self, graceful=False):
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if self.message_listener:
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LOG.info('Stopping consumer...')
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self.message_listener.stop()
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if graceful:
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LOG.info('Consumer successfully stopped. Waiting for final '
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'messages to be processed...')
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self.message_listener.wait()
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if self.endpoints:
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LOG.info('Shutting down endpoint worker executors...')
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for e in self.endpoints:
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try:
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e.worker.executor.shutdown()
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except AttributeError:
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pass
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super(ConsumerService, self).terminate()
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