85 lines
2.7 KiB
Python
85 lines
2.7 KiB
Python
#!/usr/bin/python
|
|
# Copyright 2015 Mirantis, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
# Collectd plugin for getting statistics from Nova
|
|
import collectd
|
|
|
|
import collectd_openstack as openstack
|
|
from itertools import groupby
|
|
|
|
|
|
PLUGIN_NAME = 'nova'
|
|
INTERVAL = openstack.INTERVAL
|
|
|
|
|
|
class NovaInstanceStatsPlugin(openstack.CollectdPlugin):
|
|
""" Class to report the statistics on Nova instances.
|
|
|
|
Number of instances broken down by state
|
|
"""
|
|
def __init__(self, *args, **kwargs):
|
|
super(NovaInstanceStatsPlugin, self).__init__(*args, **kwargs)
|
|
self.plugin = PLUGIN_NAME
|
|
self.interval = INTERVAL
|
|
self.pagination_limit = 500
|
|
self._cache = {}
|
|
|
|
def itermetrics(self):
|
|
server_details = self.get_objects('nova', 'servers',
|
|
params={'all_tenants': 1},
|
|
detail=True, since=True)
|
|
|
|
for server in server_details:
|
|
_id = server.get('id')
|
|
status = server.get('status', 'unknown').lower()
|
|
if status == 'deleted':
|
|
try:
|
|
self.logger.debug(
|
|
'remove deleted instance {} from cache'.format(_id))
|
|
del self._cache[_id]
|
|
except KeyError:
|
|
self.logger.warning(
|
|
'cannot find instance in cache {}'.format(_id))
|
|
else:
|
|
self._cache[_id] = status
|
|
|
|
servers = sorted(self._cache.values())
|
|
for status, g in groupby(servers):
|
|
yield {
|
|
'plugin_instance': 'instances',
|
|
'values': len(list(g)),
|
|
'type_instance': status,
|
|
}
|
|
|
|
|
|
plugin = NovaInstanceStatsPlugin(collectd, PLUGIN_NAME,
|
|
disable_check_metric=True)
|
|
|
|
|
|
def config_callback(conf):
|
|
plugin.config_callback(conf)
|
|
|
|
|
|
def notification_callback(notification):
|
|
plugin.notification_callback(notification)
|
|
|
|
|
|
def read_callback():
|
|
plugin.conditional_read_callback()
|
|
|
|
collectd.register_config(config_callback)
|
|
collectd.register_notification(notification_callback)
|
|
collectd.register_read(read_callback, INTERVAL)
|