120 lines
3.9 KiB
Python
120 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Author: François Rossigneux <francois.rossigneux@inria.fr>
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#
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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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import datetime
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from keystoneclient import exceptions
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from oslo.config import cfg
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import requests
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from ceilometer.central import plugin
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from ceilometer.openstack.common.gettextutils import _
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from ceilometer.openstack.common import log
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from ceilometer import sample
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LOG = log.getLogger(__name__)
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class KwapiClient(object):
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"""Kwapi API client."""
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def __init__(self, url, token=None):
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"""Initializes client."""
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self.url = url
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self.token = token
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def iter_probes(self):
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"""Returns a list of dicts describing all probes."""
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probes_url = self.url + '/probes/'
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headers = {}
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if self.token is not None:
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headers = {'X-Auth-Token': self.token}
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request = requests.get(probes_url, headers=headers)
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message = request.json()
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probes = message['probes']
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for key, value in probes.iteritems():
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probe_dict = value
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probe_dict['id'] = key
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yield probe_dict
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class _Base(plugin.CentralPollster):
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"""Base class for the Kwapi pollster, derived from CentralPollster."""
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@staticmethod
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def get_kwapi_client(ksclient):
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"""Returns a KwapiClient configured with the proper url and token."""
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endpoint = ksclient.service_catalog.url_for(
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service_type='energy',
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endpoint_type=cfg.CONF.service_credentials.os_endpoint_type)
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return KwapiClient(endpoint, ksclient.auth_token)
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CACHE_KEY_PROBE = 'kwapi.probes'
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def _iter_probes(self, ksclient, cache):
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"""Iterate over all probes."""
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if self.CACHE_KEY_PROBE not in cache:
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cache[self.CACHE_KEY_PROBE] = self._get_probes(ksclient)
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return iter(cache[self.CACHE_KEY_PROBE])
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def _get_probes(self, ksclient):
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try:
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client = self.get_kwapi_client(ksclient)
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except exceptions.EndpointNotFound:
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LOG.debug(_("Kwapi endpoint not found"))
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return []
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return list(client.iter_probes())
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class EnergyPollster(_Base):
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"""Measures energy consumption."""
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def get_samples(self, manager, cache, resources=None):
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"""Returns all samples."""
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for probe in self._iter_probes(manager.keystone, cache):
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yield sample.Sample(
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name='energy',
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type=sample.TYPE_CUMULATIVE,
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unit='kWh',
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volume=probe['kwh'],
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user_id=None,
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project_id=None,
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resource_id=probe['id'],
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timestamp=datetime.datetime.fromtimestamp(
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probe['timestamp']).isoformat(),
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resource_metadata={}
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)
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class PowerPollster(_Base):
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"""Measures power consumption."""
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def get_samples(self, manager, cache, resources=None):
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"""Returns all samples."""
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for probe in self._iter_probes(manager.keystone, cache):
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yield sample.Sample(
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name='power',
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type=sample.TYPE_GAUGE,
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unit='W',
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volume=probe['w'],
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user_id=None,
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project_id=None,
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resource_id=probe['id'],
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timestamp=datetime.datetime.fromtimestamp(
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probe['timestamp']).isoformat(),
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resource_metadata={}
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)
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