68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
#!/usr/bin/python
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# Copyright 2015 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Collectd plugin for getting statistics from Nova
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import collectd
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import openstack
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PLUGIN_NAME = 'nova'
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INTERVAL = 60
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class NovaStatsPlugin(openstack.CollectdPlugin):
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""" Class to report the statistics on Nova service.
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number of instances broken down by state
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"""
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def config_callback(self, config):
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super(NovaStatsPlugin, self).config_callback(config)
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def read_callback(self):
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servers_details = self.get_objects_details('nova', 'servers')
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def groupby(d):
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return d.get('status', 'unknown').lower()
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status = self.count_objects_group_by(servers_details,
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group_by_func=groupby)
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for s, nb in status.iteritems():
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self.dispatch_value('instances', s, nb)
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def dispatch_value(self, plugin_instance, name, value):
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v = collectd.Values(
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plugin=PLUGIN_NAME, # metric source
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plugin_instance=plugin_instance,
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type='gauge',
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type_instance=name,
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interval=INTERVAL,
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# w/a for https://github.com/collectd/collectd/issues/716
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meta={'0': True},
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values=[value]
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)
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v.dispatch()
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plugin = NovaStatsPlugin(collectd)
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def config_callback(conf):
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plugin.config_callback(conf)
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def read_callback():
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plugin.read_callback()
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collectd.register_config(config_callback)
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collectd.register_read(read_callback, INTERVAL)
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