a00f360f8f
Add functionality to the plugin: - Convert from collectd data sources to Ceilometer format - Add unit mappings for Ceilometer - Define resource IDs - Add unit tests Change-Id: Ica1f49ea3c9bbc4bc857044dea7da39869b33bba
88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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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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"""Ceilometer collectd plugin"""
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from __future__ import unicode_literals
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# pylint: disable=import-error
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import collectd
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# pylint: enable=import-error
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from collectd_ceilometer.logger import CollectdLogHandler
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from collectd_ceilometer.meters import MeterStorage
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from collectd_ceilometer.settings import Config
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from collectd_ceilometer.writer import Writer
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import logging
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logging.getLogger().addHandler(CollectdLogHandler())
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logging.getLogger().setLevel(logging.NOTSET)
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LOGGER = logging.getLogger(__name__)
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class Plugin(object):
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"""Ceilometer plugin with collectd callbacks"""
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# NOTE: this is multithreaded class
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def __init__(self):
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self._meters = None
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self._writer = None
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logging.getLogger("requests").setLevel(logging.WARNING)
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def config(self, cfg):
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"""Configuration callback
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@param cfg configuration node provided by collectd
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"""
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# pylint: disable=no-self-use
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Config.instance().read(cfg)
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def init(self):
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"""Initialization callback"""
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collectd.info('Initializing the collectd OpenStack python plugin')
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self._meters = MeterStorage()
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self._writer = Writer(self._meters)
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def write(self, vl, data=None):
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"""Collectd write callback"""
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# pylint: disable=broad-except
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# pass arguments to the writer
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try:
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self._writer.write(vl, data)
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except Exception as exc:
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if collectd is not None:
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collectd.error('Exception during write: %s' % exc)
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def shutdown(self):
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"""Shutdown callback"""
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# pylint: disable=broad-except
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collectd.info("SHUTDOWN")
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try:
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self._writer.flush()
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except Exception as exc:
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if collectd is not None:
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collectd.error('Exception during shutdown: %s' % exc)
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# The collectd plugin instance
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# pylint: disable=invalid-name
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instance = Plugin()
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# pylint: enable=invalid-name
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# Register plugin callbacks
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collectd.register_init(instance.init)
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collectd.register_config(instance.config)
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collectd.register_write(instance.write)
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collectd.register_shutdown(instance.shutdown)
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