131 lines
4.6 KiB
Python
131 lines
4.6 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 Cinder
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import collectd
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from collections import Counter
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from collections import defaultdict
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import re
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import collectd_openstack as openstack
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PLUGIN_NAME = 'cinder'
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INTERVAL = openstack.INTERVAL
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class CinderStatsPlugin(openstack.CollectdPlugin):
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""" Class to report the statistics on Cinder service.
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state of agents
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number of volumes broken down by state
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total size of volumes usable and in error state
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"""
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states = {'up': 0, 'down': 1, 'disabled': 2}
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cinder_re = re.compile('^cinder-')
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def collect(self):
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# Get information of the state per service
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# State can be: 'up', 'down' or 'disabled'
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aggregated_workers = defaultdict(Counter)
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for worker in self.iter_workers('cinder'):
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host = worker['host'].split('.')[0]
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service = self.cinder_re.sub('', worker['service'])
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state = worker['state']
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aggregated_workers[service][state] += 1
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self.dispatch_value('cinder_service', '',
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self.states[state],
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{'host': host,
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'service': service,
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'state': state})
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for service in aggregated_workers:
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totalw = sum(aggregated_workers[service].values())
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for state in self.states:
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prct = (100.0 * aggregated_workers[service][state]) / totalw
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self.dispatch_value('cinder_services_percent', '',
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prct,
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{'state': state, 'service': service})
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self.dispatch_value('cinder_services', '',
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aggregated_workers[service][state],
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{'state': state, 'service': service})
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volumes_details = self.get_objects_details('cinder', 'volumes')
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def groupby(d):
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return d.get('status', 'unknown').lower()
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def count_size_bytes(d):
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return d.get('size', 0) * 10 ** 9
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status = self.count_objects_group_by(volumes_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('volumes', s, nb)
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sizes = self.count_objects_group_by(volumes_details,
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group_by_func=groupby,
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count_func=count_size_bytes)
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for n, size in sizes.iteritems():
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self.dispatch_value('volumes_size', n, size)
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snaps_details = self.get_objects_details('cinder', 'snapshots')
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status_snaps = self.count_objects_group_by(snaps_details,
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group_by_func=groupby)
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for s, nb in status_snaps.iteritems():
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self.dispatch_value('snapshots', s, nb)
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sizes = self.count_objects_group_by(snaps_details,
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group_by_func=groupby,
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count_func=count_size_bytes)
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for n, size in sizes.iteritems():
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self.dispatch_value('snapshots_size', n, size)
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def dispatch_value(self, plugin_instance, name, value, meta=None):
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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=meta or {'0': True},
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values=[value]
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)
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v.dispatch()
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plugin = CinderStatsPlugin(collectd, PLUGIN_NAME)
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def config_callback(conf):
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plugin.config_callback(conf)
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def notification_callback(notification):
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plugin.notification_callback(notification)
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def read_callback():
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plugin.conditional_read_callback()
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collectd.register_config(config_callback)
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collectd.register_notification(notification_callback)
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collectd.register_read(read_callback, INTERVAL)
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