Source code for ceilometer.dispatcher.http

# Copyright 2013 IBM Corp
#
# 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.

import json

from oslo_config import cfg
from oslo_log import log
from oslo_utils import strutils
import requests

from ceilometer import dispatcher
from ceilometer.i18n import _LE

LOG = log.getLogger(__name__)

http_dispatcher_opts = [
    cfg.StrOpt('target',
               default='',
               help='The target where the http request will be sent. '
                    'If this is not set, no data will be posted. For '
                    'example: target = http://hostname:1234/path'),
    cfg.StrOpt('event_target',
               help='The target for event data where the http request '
                    'will be sent to. If this is not set, it will default '
                    'to same as Sample target.'),
    cfg.IntOpt('timeout',
               default=5,
               help='The max time in seconds to wait for a request to '
                    'timeout.'),
    cfg.StrOpt('verify_ssl',
               help='The path to a server certificate or directory if the '
                    'system CAs are not used or if a self-signed certificate '
                    'is used. Set to False to ignore SSL cert verification.'),
]

cfg.CONF.register_opts(http_dispatcher_opts, group="dispatcher_http")


[docs]class HttpDispatcher(dispatcher.MeterDispatcherBase, dispatcher.EventDispatcherBase): """Dispatcher class for posting metering/event data into a http target. To enable this dispatcher, the following option needs to be present in ceilometer.conf file:: [DEFAULT] meter_dispatchers = http event_dispatchers = http Dispatcher specific options can be added as follows:: [dispatcher_http] target = www.example.com event_target = www.example.com timeout = 2 # No SSL verification #verify_ssl = False # SSL verification with system-installed CAs verify_ssl = True # SSL verification with specific CA or directory of certs #verify_ssl = /path/to/ca_certificate.crt """ def __init__(self, conf): super(HttpDispatcher, self).__init__(conf) self.headers = {'Content-type': 'application/json'} self.timeout = self.conf.dispatcher_http.timeout self.target = self.conf.dispatcher_http.target self.event_target = (self.conf.dispatcher_http.event_target or self.target) try: self.verify_ssl = strutils.bool_from_string( self.conf.dispatcher_http.verify_ssl, strict=True) except ValueError: self.verify_ssl = self.conf.dispatcher_http.verify_ssl or True
[docs] def record_metering_data(self, data): if self.target == '': # if the target was not set, do not do anything LOG.error(_LE('Dispatcher target was not set, no meter will ' 'be posted. Set the target in the ceilometer.conf ' 'file.')) return # We may have receive only one counter on the wire if not isinstance(data, list): data = [data] for meter in data: LOG.debug( 'metering data %(counter_name)s ' 'for %(resource_id)s @ %(timestamp)s: %(counter_volume)s', {'counter_name': meter['counter_name'], 'resource_id': meter['resource_id'], 'timestamp': meter.get('timestamp', 'NO TIMESTAMP'), 'counter_volume': meter['counter_volume']}) try: # Every meter should be posted to the target meter_json = json.dumps(meter) LOG.trace('Meter Message: %s', meter_json) res = requests.post(self.target, data=meter_json, headers=self.headers, verify=self.verify_ssl, timeout=self.timeout) LOG.debug('Meter message posting finished with status code ' '%d.', res.status_code) res.raise_for_status() except requests.exceptions.HTTPError: LOG.exception(_LE('Status Code: %(code)s. Failed to ' 'dispatch meter: %(meter)s'), {'code': res.status_code, 'meter': meter})
[docs] def record_events(self, events): if self.event_target == '': # if the event target was not set, do not do anything LOG.error(_LE('Dispatcher event target was not set, no event will ' 'be posted. Set event_target in the ceilometer.conf ' 'file.')) return if not isinstance(events, list): events = [events] for event in events: try: event_json = json.dumps(event) LOG.trace('Event Message: %s', event_json) res = requests.post(self.event_target, data=event_json, headers=self.headers, verify=self.verify_ssl, timeout=self.timeout) LOG.debug('Event Message posting finished with status code ' '%d.', res.status_code) res.raise_for_status() except requests.exceptions.HTTPError: LOG.exception(_LE('Status Code: %(code)s. Failed to ' 'dispatch event: %(event)s'), {'code': res.status_code, 'event': event})

Project Source