20f9ad4756
The CollectorRegistry object does not allow an identical
metric to be added, which occasionally happens when the nova,
neutron and hypervisor collectors update their caches.
Also,
- The cinder endpoint has been updated to v3 to resolve a 404
which was occuring during metric collection.
- Extra logging settings were removed from files. Log level and format
are now set in main.py
- misc pep8 fixes to imports and newlines
Change-Id: Ia0bebdc1a39b25bdeae47d01625cfb7b89d132eb
88 lines
3.3 KiB
Python
88 lines
3.3 KiB
Python
# Copyright 2017 The Openstack-Helm Authors.
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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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import logging
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from collections import Counter, defaultdict
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from prometheus_client import CollectorRegistry, generate_latest, Gauge
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from base import OSBase
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logger = logging.getLogger(__name__)
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class NovaServiceStats(OSBase):
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""" Class to report the statistics on Nova services.
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status per service broken down by state
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"""
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def build_cache_data(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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stats = self.osclient.get_workers('nova')
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for worker in stats:
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service = worker['service']
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state = worker['state']
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aggregated_workers[service][state] += 1
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for service in aggregated_workers:
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total = sum(aggregated_workers[service].values())
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for state in self.osclient.states:
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prct = 0
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if total > 0:
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prct = (100.0 * aggregated_workers[service][state]) / total
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stats.append({
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'stat_name': "services_{}_{}_percent".format(service, state),
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'stat_value': prct,
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'state': state,
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'service': service
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})
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stats.append({
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'stat_name': "services_{}_{}_total".format(service, state),
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'stat_value': aggregated_workers[service][state],
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'state': state,
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'service': service
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})
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return stats
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def get_cache_key(self):
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return "nova_services_stats"
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def get_stats(self):
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registry = CollectorRegistry()
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labels = ['region', 'host', 'service', 'state']
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services_stats_cache = self.get_cache_data()
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for services_stat in services_stats_cache:
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try:
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stat_gauge = Gauge(
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self.gauge_name_sanitize(
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services_stat['stat_name']),
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'Openstack Nova Service statistic',
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labels,
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registry=registry)
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label_values = [self.osclient.region,
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services_stat.get('host', ''),
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services_stat.get('service', ''),
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services_stat.get('state', '')]
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stat_gauge.labels(*label_values).set(services_stat['stat_value'])
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except ValueError:
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logger.debug('Unchanged value for stat {} already present in '
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'nova services registry for host {}; ignoring.'
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.format(services_stat['stat_name'],
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services_stat['host']))
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return generate_latest(registry)
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