files/ext_services/passivetest/notifications.py

# 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 oslo_messaging
from oslo_config import cfg

from ceilometer.agent import plugin_base
from oslo_log import log
from ceilometer import sample

OPTS = [
    cfg.StrOpt('passivetestservice_control_exchange',
               default='passivetestservice',
               help="Exchange name for PassiveTest notifications."),
]

cfg.CONF.register_opts(OPTS)

LOG = log.getLogger(__name__)

class PassiveTestNotification(plugin_base.NotificationBase):

    resource_name = None
    event_types = ['passivetest.stats']

    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.passivetestservice_control_exchange)
                for topic in self.get_notification_topics(conf)]


    def process_notification(self, message):
        LOG.debug('Received Passivetest event passivetest.stats')

        if message['payload']:
            message['payload']['volume']=float(message['payload']['volume'])
            yield sample.Sample.from_notification(
                message=message,
                **message['payload'])