76c6d465d8
The collector grew from doing one thing to doing too many. This encumber scalability and he's really a bad design as it is. Let's fix that. This patch take out the notification handling code to a new daemon called ceilometer-agent-notification. This daemon will be in charge of receiving notifications, storing them if needed, and building samples in from of it. Change-Id: I093f3b7855bd6ffff2018db9cd485ed2fc0f37a5 Blueprint: split-collector
76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
# -*- encoding: utf-8 -*-
|
|
#
|
|
# Copyright © 2013 eNovance
|
|
#
|
|
# Author: Julien Danjou <julien@danjou.info>
|
|
#
|
|
# 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 ceilometer.openstack.common import context as req_context
|
|
from ceilometer.openstack.common import log as logging
|
|
from ceilometer import pipeline
|
|
from ceilometer import transformer
|
|
|
|
from stevedore import extension
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
_notification_manager = None
|
|
_pipeline_manager = None
|
|
|
|
|
|
def _load_notification_manager():
|
|
global _notification_manager
|
|
|
|
namespace = 'ceilometer.notification'
|
|
|
|
LOG.debug('loading notification handlers from %s', namespace)
|
|
|
|
_notification_manager = extension.ExtensionManager(
|
|
namespace=namespace,
|
|
invoke_on_load=True)
|
|
|
|
if not list(_notification_manager):
|
|
LOG.warning('Failed to load any notification handlers for %s',
|
|
namespace)
|
|
|
|
|
|
def _load_pipeline_manager():
|
|
global _pipeline_manager
|
|
|
|
_pipeline_manager = pipeline.setup_pipeline(
|
|
transformer.TransformerExtensionManager(
|
|
'ceilometer.transformer',
|
|
),
|
|
)
|
|
|
|
|
|
def _process_notification_for_ext(ext, context, notification):
|
|
with _pipeline_manager.publisher(context) as p:
|
|
# FIXME(dhellmann): Spawn green thread?
|
|
p(list(ext.obj.to_samples(notification)))
|
|
|
|
|
|
def notify(context, message):
|
|
"""Sends a notification as a meter using Ceilometer pipelines."""
|
|
if not _notification_manager:
|
|
_load_notification_manager()
|
|
if not _pipeline_manager:
|
|
_load_pipeline_manager()
|
|
_notification_manager.map(
|
|
_process_notification_for_ext,
|
|
context=context or req_context.get_admin_context(),
|
|
notification=message)
|