0e8f2359d9
This changeset is phase one of changing the pollster API to support polling individual instance resources. In this change, the single compute agent is divided into two separate daemons. The compute agent, for polling instance data, is still meant to run on the compute server. The new "central" agent, for polling resources not tied to a compute node, is meant to run on a management server (probably the same place the collector runs). The configuration of the pollsters is updated so that they are loaded by the appropriate agent. New base classes are introduced for each of the types of pollsters. For now, the APIs remain the same. The code implementing the agent and plugins has been moved around to reflect the new logical relationships, and the documentation is updated (including new installation instructions). Change-Id: Ica6e947b2e457f7db6672147af1369a24066037d Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012 New Dream Network, LLC (DreamHost)
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#
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# Author: Doug Hellmann <doug.hellmann@dreamhost.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Base class for plugins used by the compute agent.
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"""
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import abc
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from ceilometer import plugin
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class ComputePollster(plugin.PollsterBase):
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"""Base class for plugins that support the polling API on the
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compute node."""
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__metaclass__ = abc.ABCMeta
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@abc.abstractmethod
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def get_counters(self, manager, context):
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"""Return a sequence of Counter instances from polling the
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resources."""
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