deb-ceilometer/ceilometer/telemetry/notifications.py
liu-sheng 98581c243a Add handler of sample creation notification
This change add a notification handler of sample.create event, which is
emitted when posting samples via /v2/meters API. The sample's info is
include in the payload of notification.

Partially implements: blueprint api-no-pipeline

Change-Id: I3941b851249c0f70f864bae32da154819b3e5dd7
2015-06-24 17:11:59 +08:00

65 lines
2.2 KiB
Python

#
# 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 ceilometer.agent import plugin_base
from ceilometer import sample
OPTS = [
cfg.StrOpt('ceilometer_control_exchange',
default='ceilometer',
help="Exchange name for ceilometer notifications."),
]
cfg.CONF.register_opts(OPTS)
class TelemetryBase(plugin_base.NotificationBase):
"""Convert telemetry notification into Samples."""
@staticmethod
def get_targets(conf):
"""Return a sequence of oslo_messaging.Target
Sequence defining the exchange and topics to be connected for this
plugin.
"""
return [oslo_messaging.Target(
topic=topic, exchange=conf.ceilometer_control_exchange)
for topic in conf.notification_topics]
class TelemetryApiPost(TelemetryBase):
"""Handle sample from notification bus, which is posted via API."""
event_types = ['telemetry.api']
def process_notification(self, message):
samples = message['payload']
for sample_dict in samples:
yield sample.Sample(
name=sample_dict['counter_name'],
type=sample_dict['counter_type'],
unit=sample_dict['counter_unit'],
volume=sample_dict['counter_volume'],
user_id=sample_dict['user_id'],
project_id=sample_dict['project_id'],
resource_id=sample_dict['resource_id'],
timestamp=sample_dict['timestamp'],
resource_metadata=sample_dict['resource_metadata'],
source=sample_dict['source'],
id=sample_dict['message_id'])