Files
aodh/ceilometer/agent/manager.py
Doug Hellmann 0767165ebc refactor meter event publishing code
There were two places that had all of the logic for constructing
a metering message and sending it to the appropriate exchanges.
This changeset combines those into one function and invokes
the function from the old locations.

Update tox.ini to work around an issue with providing access to
the global site-packages (https://bitbucket.org/hpk42/tox/issue/32).

Change-Id: If2b01edbc0c372907a04baf69f1137575b6921bd
2012-06-08 14:38:15 -04:00

72 lines
2.5 KiB
Python

# -*- encoding: utf-8 -*-
#
# Copyright © 2012 eNovance <licensing@enovance.com>
#
# 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.
import pkg_resources
from nova import manager
from ceilometer import log
from ceilometer import publish
LOG = log.getLogger(__name__)
COMPUTE_PLUGIN_NAMESPACE = 'ceilometer.poll.compute'
class AgentManager(manager.Manager):
def init_host(self):
self._load_plugins()
return
def _load_plugins(self):
self.pollsters = []
for ep in pkg_resources.iter_entry_points(COMPUTE_PLUGIN_NAMESPACE):
try:
plugin_class = ep.load()
plugin = plugin_class()
# FIXME(dhellmann): Currently assumes all plugins are
# enabled when they are discovered and
# importable. Need to add check against global
# configuration flag and check that asks the plugin if
# it should be enabled.
self.pollsters.append((ep.name, plugin))
LOG.info('loaded pollster %s:%s',
COMPUTE_PLUGIN_NAMESPACE, ep.name)
except Exception as err:
LOG.warning('Failed to load pollster %s:%s',
ep.name, err)
LOG.exception(err)
if not self.pollsters:
LOG.warning('Failed to load any pollsters for %s',
COMPUTE_PLUGIN_NAMESPACE)
return
def periodic_tasks(self, context, raise_on_error=False):
"""Tasks to be run at a periodic interval."""
for name, pollster in self.pollsters:
try:
LOG.info('polling %s', name)
for c in pollster.get_counters(self, context):
LOG.info('COUNTER: %s', c)
publish.publish_counter(context, c)
except Exception as err:
LOG.warning('Continuing after error from %s: %s', name, err)
LOG.exception(err)