a10773e413
Add a dictionary as a data cache for the pollsters, creating it outside of the loop where they are invoked and passing it to them. Future changesets will include changes to the pollsters to put data in the cache. blueprint one-meter-per-plugin Change-Id: Ie65526dfe65a8880ad8683b62fae62f8e7f9e69b Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
# -*- encoding: utf-8 -*-
|
|
#
|
|
# Copyright © 2012 New Dream Network, LLC (DreamHost)
|
|
#
|
|
# Author: Doug Hellmann <doug.hellmann@dreamhost.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.
|
|
"""Base class for plugins used by the compute agent.
|
|
"""
|
|
|
|
import abc
|
|
|
|
from ceilometer import plugin
|
|
|
|
|
|
class ComputePollster(plugin.PollsterBase):
|
|
"""Base class for plugins that support the polling API on the compute node.
|
|
"""
|
|
|
|
__metaclass__ = abc.ABCMeta
|
|
|
|
@abc.abstractmethod
|
|
def get_counters(self, manager, cache, instance):
|
|
"""Return a sequence of Counter instances from polling the resources.
|
|
|
|
:param manager: The service manager invoking the plugin
|
|
:param cache: A dictionary for passing data between plugins
|
|
:param instance: The instance to examine
|
|
"""
|