152 lines
6.1 KiB
Python
152 lines
6.1 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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from oslo_utils import strutils
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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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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.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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cfg.StrOpt('verify_ssl',
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help='The path to a server certificate or directory if the '
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'system CAs are not used or if a self-signed certificate '
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'is used. Set to False to ignore SSL cert verification.'),
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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.MeterDispatcherBase,
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dispatcher.EventDispatcherBase):
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"""Dispatcher class for posting metering/event 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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meter_dispatchers = http
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event_dispatchers = 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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timeout = 2
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# No SSL verification
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#verify_ssl = False
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# SSL verification with system-installed CAs
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verify_ssl = True
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# SSL verification with specific CA or directory of certs
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#verify_ssl = /path/to/ca_certificate.crt
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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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try:
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self.verify_ssl = strutils.bool_from_string(
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self.conf.dispatcher_http.verify_ssl, strict=True)
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except ValueError:
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self.verify_ssl = self.conf.dispatcher_http.verify_ssl or True
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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(_LE('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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try:
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# Every meter should be posted to the target
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meter_json = json.dumps(meter)
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LOG.trace('Meter Message: %s', meter_json)
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res = requests.post(self.target,
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data=meter_json,
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headers=self.headers,
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verify=self.verify_ssl,
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timeout=self.timeout)
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LOG.debug('Meter message posting finished with status code '
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'%d.', res.status_code)
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res.raise_for_status()
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except requests.exceptions.HTTPError:
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LOG.exception(_LE('Status Code: %(code)s. Failed to '
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'dispatch meter: %(meter)s'),
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{'code': res.status_code, 'meter': meter})
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def record_events(self, events):
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if self.event_target == '':
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# if the event target was not set, do not do anything
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LOG.error(_LE('Dispatcher event target was not set, no event will '
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'be posted. Set event_target in the ceilometer.conf '
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'file.'))
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return
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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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try:
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event_json = json.dumps(event)
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LOG.trace('Event Message: %s', event_json)
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res = requests.post(self.event_target,
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data=event_json,
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headers=self.headers,
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verify=self.verify_ssl,
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timeout=self.timeout)
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LOG.debug('Event Message posting finished with status code '
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'%d.', res.status_code)
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res.raise_for_status()
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except requests.exceptions.HTTPError:
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LOG.exception(_LE('Status Code: %(code)s. Failed to '
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'dispatch event: %(event)s'),
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{'code': res.status_code, 'event': event})
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