c612727ff8
oslo.log has graduated from oslo-incubator, and openstack.common.log has been removed from oslo-incubator, so let's use the new one. NOTE1:openstack.common.log registers its options at import time, but oslo.log needs to call register_options() explicitly. NOTE2: split unit test case in tests/objectstore/test_swift_middleware.py to avoid duplicate cli option register exception, see NOTE1. Change-Id: Ida30808dbe0c584919755c207ca4ee4b91963a17
139 lines
5.5 KiB
Python
139 lines
5.5 KiB
Python
# Copyright 2013 IBM Corp
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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 json
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from oslo_config import cfg
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from oslo_log import log
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import requests
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from ceilometer import dispatcher
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from ceilometer.i18n import _, _LE
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from ceilometer.publisher import utils as publisher_utils
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LOG = log.getLogger(__name__)
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http_dispatcher_opts = [
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cfg.StrOpt('target',
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default='',
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help='The target where the http request will be sent. '
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'If this is not set, no data will be posted. For '
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'example: target = http://hostname:1234/path'),
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cfg.StrOpt('event_target',
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help='The target for event data where the http request '
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'will be sent to. If this is not set, it will default '
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'to same as Sample target.'),
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cfg.BoolOpt('cadf_only',
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default=False,
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help='The flag that indicates if only cadf message should '
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'be posted. If false, all meters will be posted.'),
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cfg.IntOpt('timeout',
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default=5,
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help='The max time in seconds to wait for a request to '
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'timeout.'),
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]
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cfg.CONF.register_opts(http_dispatcher_opts, group="dispatcher_http")
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class HttpDispatcher(dispatcher.Base):
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"""Dispatcher class for posting metering data into a http target.
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To enable this dispatcher, the following option needs to be present in
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ceilometer.conf file::
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[DEFAULT]
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dispatcher = http
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Dispatcher specific options can be added as follows::
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[dispatcher_http]
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target = www.example.com
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event_target = www.example.com
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cadf_only = true
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timeout = 2
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"""
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def __init__(self, conf):
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super(HttpDispatcher, self).__init__(conf)
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self.headers = {'Content-type': 'application/json'}
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self.timeout = self.conf.dispatcher_http.timeout
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self.target = self.conf.dispatcher_http.target
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self.event_target = (self.conf.dispatcher_http.event_target or
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self.target)
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self.cadf_only = self.conf.dispatcher_http.cadf_only
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def record_metering_data(self, data):
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if self.target == '':
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# if the target was not set, do not do anything
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LOG.error(_('Dispatcher target was not set, no meter will '
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'be posted. Set the target in the ceilometer.conf '
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'file'))
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return
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# We may have receive only one counter on the wire
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if not isinstance(data, list):
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data = [data]
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for meter in data:
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LOG.debug(_(
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'metering data %(counter_name)s '
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'for %(resource_id)s @ %(timestamp)s: %(counter_volume)s')
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% ({'counter_name': meter['counter_name'],
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'resource_id': meter['resource_id'],
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'timestamp': meter.get('timestamp', 'NO TIMESTAMP'),
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'counter_volume': meter['counter_volume']}))
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if publisher_utils.verify_signature(
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meter, self.conf.publisher.telemetry_secret):
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try:
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if self.cadf_only:
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# Only cadf messages are being wanted.
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req_data = meter.get('resource_metadata',
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{}).get('request')
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if req_data and 'CADF_EVENT' in req_data:
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data = req_data['CADF_EVENT']
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else:
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continue
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else:
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# Every meter should be posted to the target
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data = meter
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res = requests.post(self.target,
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data=json.dumps(data),
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headers=self.headers,
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timeout=self.timeout)
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LOG.debug(_('Message posting finished with status code '
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'%d.') % res.status_code)
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except Exception as err:
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LOG.exception(_('Failed to record metering data: %s'),
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err)
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else:
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LOG.warning(_(
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'message signature invalid, discarding message: %r'),
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meter)
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def record_events(self, events):
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if not isinstance(events, list):
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events = [events]
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for event in events:
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res = None
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try:
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res = requests.post(self.event_target, data=event,
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headers=self.headers, timeout=self.timeout)
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res.raise_for_status()
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except Exception:
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error_code = res.status_code if res else 'unknown'
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LOG.exception(_LE('Status Code: %{code}s. Failed to dispatch '
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'event: %{event}s'),
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{'code': error_code, 'event': event})
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