almanach/almanach/collector/messaging.py

48 lines
1.8 KiB
Python

# Copyright 2016 Internap.
#
# 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
LOG = logging.getLogger(__name__)
class MessagingFactory(object):
def __init__(self, config):
self.config = config
def get_listeners(self, handler):
listeners = []
targets = [
oslo_messaging.Target(topic=self.config.collector.topic),
]
for url in self.config.collector.transport_url:
LOG.debug('Creating listener for %s', url)
transport = self._get_transport(url)
listeners.append(oslo_messaging.get_notification_listener(transport=transport,
targets=targets,
endpoints=[handler],
executor='threading'))
return listeners
def get_notifier(self):
transport = self._get_transport(self.config.collector.transport_url[0])
return oslo_messaging.Notifier(transport, publisher_id='almanach.collector',
topics=[self.config.collector.topic], driver='messagingv2')
def _get_transport(self, url):
return oslo_messaging.get_notification_transport(self.config, url=url)