deb-ceilometer/ceilometer/event/endpoint.py

76 lines
3.0 KiB
Python

#
# Copyright 2012-2014 eNovance <licensing@enovance.com>
#
# Author: Mehdi Abaakouk <mehdi.abaakouk@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
import oslo.messaging
from stevedore import extension
from ceilometer import dispatcher
from ceilometer.event import converter as event_converter
from ceilometer import messaging
from ceilometer.openstack.common.gettextutils import _
from ceilometer.storage import models
LOG = logging.getLogger(__name__)
class EventsNotificationEndpoint(object):
def __init__(self):
super(EventsNotificationEndpoint, self).__init__()
self.dispatcher_manager = dispatcher.load_dispatcher_manager()
LOG.debug(_('Loading event definitions'))
self.event_converter = event_converter.setup_events(
extension.ExtensionManager(
namespace='ceilometer.event.trait_plugin'))
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)
self.process_notification(notification)
def process_notification(self, notification):
event = self.event_converter.to_event(notification)
if event is not None:
LOG.debug(_('Saving event "%s"'), event.event_type)
problem_events = []
for dispatcher_ext in self.dispatcher_manager:
try:
problem_events.extend(
dispatcher_ext.obj.record_events(event))
except NotImplementedError:
LOG.warn(_('Event is not implemented with the storage'
' backend'))
if models.Event.UNKNOWN_PROBLEM in [x[0] for x in problem_events]:
if not cfg.CONF.notification.ack_on_event_error:
return oslo.messaging.NotificationResult.REQUEUE
return oslo.messaging.NotificationResult.HANDLED