c197f4793d
The NotificationDispatcher in oslo_messaging is able to requeue notifications which cannot be successfully handled by endpoint. That need endpoint return a 'requeue' if exception happened on handling. In EventsNotificationEndpoint of ceilometer, the return value was always None. Change-Id: Iab10ca06766e1454d1d2338e72087b6bca7590b6 Closes-Bug: #1489431
83 lines
3.3 KiB
Python
83 lines
3.3 KiB
Python
# Copyright 2012-2014 eNovance <licensing@enovance.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.
|
|
|
|
import logging
|
|
|
|
from oslo_config import cfg
|
|
from oslo_context import context
|
|
import oslo_messaging
|
|
from stevedore import extension
|
|
|
|
from ceilometer.event import converter as event_converter
|
|
from ceilometer import messaging
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class EventsNotificationEndpoint(object):
|
|
def __init__(self, manager):
|
|
super(EventsNotificationEndpoint, self).__init__()
|
|
LOG.debug('Loading event definitions')
|
|
self.ctxt = context.get_admin_context()
|
|
self.event_converter = event_converter.setup_events(
|
|
extension.ExtensionManager(
|
|
namespace='ceilometer.event.trait_plugin'))
|
|
self.manager = manager
|
|
|
|
def info(self, ctxt, publisher_id, event_type, payload, metadata):
|
|
"""Convert message to Ceilometer Event.
|
|
|
|
:param ctxt: oslo_messaging context
|
|
:param publisher_id: publisher of the notification
|
|
:param event_type: type of notification
|
|
:param payload: notification payload
|
|
:param metadata: metadata about the notification
|
|
"""
|
|
|
|
# NOTE: the rpc layer currently rips out the notification
|
|
# delivery_info, which is critical to determining the
|
|
# source of the notification. This will have to get added back later.
|
|
notification = messaging.convert_to_old_notification_format(
|
|
'info', ctxt, publisher_id, event_type, payload, metadata)
|
|
return self.process_notification(notification)
|
|
|
|
def error(self, ctxt, publisher_id, event_type, payload, metadata):
|
|
"""Convert error message to Ceilometer Event.
|
|
|
|
:param ctxt: oslo_messaging context
|
|
:param publisher_id: publisher of the notification
|
|
:param event_type: type of notification
|
|
:param payload: notification payload
|
|
:param metadata: metadata about the notification
|
|
"""
|
|
|
|
# NOTE: the rpc layer currently rips out the notification
|
|
# delivery_info, which is critical to determining the
|
|
# source of the notification. This will have to get added back later.
|
|
notification = messaging.convert_to_old_notification_format(
|
|
'error', ctxt, publisher_id, event_type, payload, metadata)
|
|
return self.process_notification(notification)
|
|
|
|
def process_notification(self, notification):
|
|
try:
|
|
event = self.event_converter.to_event(notification)
|
|
if event is not None:
|
|
with self.manager.publisher(self.ctxt) as p:
|
|
p(event)
|
|
except Exception:
|
|
if not cfg.CONF.notification.ack_on_event_error:
|
|
return oslo_messaging.NotificationResult.REQUEUE
|
|
raise
|
|
return oslo_messaging.NotificationResult.HANDLED
|