Source code for ceilometer.database.notifications

#
# Copyright 2015 Hewlett Packard
#
# 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 oslo_config import cfg
import oslo_messaging
from oslo_utils import timeutils

from ceilometer.agent import plugin_base
from ceilometer import sample

SERVICE = 'trove'
cfg.CONF.import_opt('trove_control_exchange',
                    'ceilometer.notification')


[docs]class TroveMetricsNotificationBase(plugin_base.NotificationBase): """Base class for trove (dbaas) notifications."""
[docs] def get_targets(self, conf): """Return a sequence of oslo.messaging.Target This sequence is defining the exchange and topics to be connected for this plugin. """ return [oslo_messaging.Target(topic=topic, exchange=conf.trove_control_exchange) for topic in self.get_notification_topics(conf)]
[docs]class InstanceExists(TroveMetricsNotificationBase): """Handles Trove instance exists notification. Emits a sample for a measurable audit interval. """ event_types = ['%s.instance.exists' % SERVICE]
[docs] def process_notification(self, message): period_start = timeutils.normalize_time(timeutils.parse_isotime( message['payload']['audit_period_beginning'])) period_end = timeutils.normalize_time(timeutils.parse_isotime( message['payload']['audit_period_ending'])) period_difference = timeutils.delta_seconds(period_start, period_end) yield sample.Sample.from_notification( name=message['event_type'], type=sample.TYPE_CUMULATIVE, unit='s', volume=period_difference, resource_id=message['payload']['instance_id'], user_id=message['payload']['user_id'], project_id=message['payload']['tenant_id'], message=message)