aodh/ceilometer/collector/dispatcher/database.py
Tong Li 70226205fd Multiple dispatcher enablement
Ceilometer does not allow multiple dispatchers to be configured.
With this implementation, a deployment can be configured to have
multiple dispatchers to direct the meters to database and other
outlet.

blueprint multi-dispatcher-enablement

Change-Id: I68c731f65d198d4fa1220f75752f242e74355dfe
2013-07-17 09:59:50 -04:00

73 lines
2.7 KiB
Python

# -*- encoding: utf-8 -*-
#
# Copyright 2013 IBM Corp
#
# Author: Tong Li <litong01@us.ibm.com>
#
# 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.
from ceilometer import storage
from ceilometer.collector import dispatcher
from ceilometer.openstack.common import log
from ceilometer.openstack.common import timeutils
from ceilometer.publisher import rpc as publisher_rpc
LOG = log.getLogger(__name__)
class DatabaseDispatcher(dispatcher.Base):
'''Dispatcher class for recording metering data into database.
The dispatcher class which records each meter into a database configured
in ceilometer configuration file.
To enable this dispatcher, the following section needs to be present in
ceilometer.conf file
dispatchers = database
'''
def __init__(self, conf):
super(DatabaseDispatcher, self).__init__(conf)
self.storage_conn = storage.get_connection(conf)
def record_metering_data(self, context, data):
# 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 %s for %s @ %s: %s',
meter['counter_name'],
meter['resource_id'],
meter.get('timestamp', 'NO TIMESTAMP'),
meter['counter_volume'])
if publisher_rpc.verify_signature(
meter,
self.conf.publisher_rpc.metering_secret):
try:
# Convert the timestamp to a datetime instance.
# Storage engines are responsible for converting
# that value to something they can store.
if meter.get('timestamp'):
ts = timeutils.parse_isotime(meter['timestamp'])
meter['timestamp'] = timeutils.normalize_time(ts)
self.storage_conn.record_metering_data(meter)
except Exception as err:
LOG.error('Failed to record metering data: %s', err)
LOG.exception(err)
else:
LOG.warning(
'message signature invalid, discarding message: %r',
meter)