5f35319dfa
When ack_on_error=False, there is a possibility that we could receieve the same message more than once. Reject those events. Change-Id: I3814a4222298d2fbc56a25e6e4540d01066ee42f
78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright 2013 IBM Corp
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#
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# Author: Tong Li <litong01@us.ibm.com>
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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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from ceilometer import storage
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from ceilometer.collector import dispatcher
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from ceilometer.openstack.common import log
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from ceilometer.openstack.common import timeutils
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from ceilometer.publisher import rpc as publisher_rpc
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LOG = log.getLogger(__name__)
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class DatabaseDispatcher(dispatcher.Base):
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'''Dispatcher class for recording metering data into database.
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The dispatcher class which records each meter into a database configured
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in ceilometer configuration file.
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To enable this dispatcher, the following section needs to be present in
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ceilometer.conf file
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dispatchers = database
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'''
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def __init__(self, conf):
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super(DatabaseDispatcher, self).__init__(conf)
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self.storage_conn = storage.get_connection(conf)
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def record_metering_data(self, context, data):
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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('metering data %s for %s @ %s: %s',
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meter['counter_name'],
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meter['resource_id'],
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meter.get('timestamp', 'NO TIMESTAMP'),
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meter['counter_volume'])
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if publisher_rpc.verify_signature(
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meter,
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self.conf.publisher_rpc.metering_secret):
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try:
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# Convert the timestamp to a datetime instance.
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# Storage engines are responsible for converting
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# that value to something they can store.
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if meter.get('timestamp'):
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ts = timeutils.parse_isotime(meter['timestamp'])
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meter['timestamp'] = timeutils.normalize_time(ts)
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self.storage_conn.record_metering_data(meter)
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except Exception as err:
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LOG.exception('Failed to record metering data: %s', 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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return self.storage_conn.record_events(events)
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