2f0c1c12cf
Currently self.client is referenced within MessagingCore, but no definition is made in its constructor. Additionally self.client is defined in children classes of MessagingCore. This patchset defines self.client in the constructor of MessagingCore and removes the redefinition in its children. -self.client lazily loaded Co-Authored-By: v-francoise <Vincent.FRANCOISE@b-com.com> Change-Id: I14525a175bf1ebde3d2636024ad2f2219c79d6e1 Closes-Bug: #1521636
121 lines
3.7 KiB
Python
121 lines
3.7 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright (c) 2015 b<>com
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import socket
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import threading
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import eventlet
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from oslo_config import cfg
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from oslo_log import log
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import oslo_messaging as om
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from watcher.common import rpc
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from watcher._i18n import _LE, _LW
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# NOTE:
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# Ubuntu 14.04 forces librabbitmq when kombu is used
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# Unfortunately it forces a version that has a crash
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# bug. Calling eventlet.monkey_patch() tells kombu
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# to use libamqp instead.
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eventlet.monkey_patch()
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LOG = log.getLogger(__name__)
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CONF = cfg.CONF
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class MessagingHandler(threading.Thread):
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def __init__(self, publisher_id, topic_name, endpoint, version,
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serializer=None):
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super(MessagingHandler, self).__init__()
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self.publisher_id = publisher_id
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self.topic_name = topic_name
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self.__endpoints = []
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self.__serializer = serializer
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self.__version = version
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self.__server = None
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self.__notifier = None
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self.__transport = None
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self.add_endpoint(endpoint)
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def add_endpoint(self, endpoint):
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self.__endpoints.append(endpoint)
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def remove_endpoint(self, endpoint):
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if endpoint in self.__endpoints:
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self.__endpoints.remove(endpoint)
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@property
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def endpoints(self):
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return self.__endpoints
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@property
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def transport(self):
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return self.__transport
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def build_notifier(self):
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serializer = rpc.RequestContextSerializer(rpc.JsonPayloadSerializer())
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return om.Notifier(
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self.__transport,
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publisher_id=self.publisher_id,
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topic=self.topic_name,
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serializer=serializer
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)
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def build_server(self, target):
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return om.get_rpc_server(self.__transport, target,
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self.__endpoints,
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serializer=self.__serializer)
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def _configure(self):
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try:
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self.__transport = om.get_transport(CONF)
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self.__notifier = self.build_notifier()
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if len(self.__endpoints):
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target = om.Target(
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topic=self.topic_name,
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# For compatibility, we can override it with 'host' opt
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server=CONF.host or socket.getfqdn(),
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version=self.__version,
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)
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self.__server = self.build_server(target)
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else:
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LOG.warning(
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_LW("No endpoint defined; can only publish events"))
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except Exception as e:
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LOG.exception(e)
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LOG.error(_LE("Messaging configuration error"))
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def run(self):
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LOG.debug("configure MessagingHandler for %s" % self.topic_name)
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self._configure()
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if len(self.__endpoints) > 0:
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LOG.debug("Starting up server")
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self.__server.start()
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def stop(self):
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LOG.debug('Stopped server')
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self.__server.wait()
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self.__server.stop()
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def publish_event(self, event_type, payload, request_id=None):
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self.__notifier.info(
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{'version_api': self.__version,
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'request_id': request_id},
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{'event_id': event_type}, payload
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)
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