deb-glare/glare/notification.py

86 lines
2.8 KiB
Python

# Copyright (c) 2016 Mirantis, Inc.
#
# 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
from oslo_log import log as logging
import oslo_messaging
from oslo_messaging import serializer
_ALIASES = {
'glare.openstack.common.rpc.impl_kombu': 'rabbit',
'glare.openstack.common.rpc.impl_qpid': 'qpid',
'glare.openstack.common.rpc.impl_zmq': 'zmq',
}
CONF = cfg.CONF
LOG = logging.getLogger(__name__)
def get_transport():
return oslo_messaging.get_notification_transport(CONF, aliases=_ALIASES)
class RequestSerializer(serializer.Serializer):
def serialize_entity(self, context, entity):
return entity.to_notification()
def deserialize_entity(self, context, entity):
return entity
def serialize_context(self, context):
return context.to_dict()
def deserialize_context(self, context):
return context.from_dict(context)
class Notifier(object):
"""Simple interface to receive Glare notifier
"""
SERVICE_NAME = 'artifact'
GLARE_NOTIFIER = None
@classmethod
def _get_notifier(cls):
if cls.GLARE_NOTIFIER is None:
notifier_opts = [
cfg.StrOpt('glare_publisher_id', default="artifact",
help='Default publisher_id for outgoing '
'Glare notifications.')]
CONF.register_opts(notifier_opts)
cls.GLARE_NOTIFIER = oslo_messaging.Notifier(
get_transport(),
publisher_id=CONF.glare_publisher_id,
serializer=RequestSerializer())
return cls.GLARE_NOTIFIER
@classmethod
def notify(cls, context, event_type, body, level='INFO'):
"""Notify Glare listeners with some useful info
:param context: User request context
:param event_type: type of event
:param body: notification payload
:param level: notification level ("INFO", "WARN", "ERROR", etc)
"""
af_notifier = cls._get_notifier()
method = getattr(af_notifier, level.lower())
method(context, "%s.%s" % (cls.SERVICE_NAME, event_type), body)
LOG.debug('Notification event %(event)s send successfully for '
'request %(request)s', {'event': event_type,
'request': context.request_id})