57 lines
2.1 KiB
Python
57 lines
2.1 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.controller.queue import endpoint
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from octavia.i18n import _LI
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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 = [endpoint.Endpoint()]
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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(_LI('Starting consumer...'))
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transport = messaging.get_transport(self.conf)
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target = messaging.Target(topic=self.topic, server=self.server,
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fanout=False)
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self.message_listener = messaging.get_rpc_server(
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transport, target, self.endpoints,
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executor='threading', access_policy=self.access_policy)
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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(_LI('Stopping consumer...'))
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self.message_listener.stop()
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if graceful:
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LOG.info(
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_LI('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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super(ConsumerService, self).terminate()
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