Clustering service for managing homogeneous objects in OpenStack
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# 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 senlin.common import utils
from senlin.events import base
from senlin.objects import notification as nobj
class MessageEvent(base.EventBackend):
"""Message driver for event dumping"""
@classmethod
def _notify_cluster_action(cls, ctx, level, cluster, action, **kwargs):
action_name = cls._get_action_name(action)
priority = utils.level_from_number(level).lower()
publisher = nobj.NotificationPublisher(
host=cfg.CONF.host, binary='senlin-engine')
publisher.obj_set_defaults()
phase = kwargs.get('phase')
event_type = nobj.EventType(
object='cluster', action=action_name, phase=phase)
payload = nobj.ClusterActionPayload(cluster, action)
notification = nobj.ClusterActionNotification(
context=ctx, priority=priority, publisher=publisher,
event_type=event_type, payload=payload)
notification.emit(ctx)
@classmethod
def _notify_node_action(cls, ctx, level, node, action, **kwargs):
action_name = cls._get_action_name(action)
priority = utils.level_from_number(level).lower()
publisher = nobj.NotificationPublisher(
host=cfg.CONF.host, binary='senlin-engine')
publisher.obj_set_defaults()
phase = kwargs.get('phase')
event_type = nobj.EventType(
object='node', action=action_name, phase=phase)
payload = nobj.NodeActionPayload(node, action)
notification = nobj.NodeActionNotification(
context=ctx, priority=priority, publisher=publisher,
event_type=event_type, payload=payload)
notification.emit(ctx)
@classmethod
def dump(cls, level, action, **kwargs):
"""Dump the provided event into message queue.
:param level: An integer as defined by python logging module.
:param action: An action object for the current operation.
:param dict kwargs: Other keyword arguments for the operation.
"""
ctx = action.context
entity = action.entity
etype = cls._check_entity(entity)
if etype == 'CLUSTER':
cls._notify_cluster_action(ctx, level, entity, action, **kwargs)
else:
cls._notify_node_action(ctx, level, entity, action, **kwargs)