mogan/mogan/scheduler/rpcapi.py

59 lines
1.9 KiB
Python

# Copyright 2017 Huawei Technologies Co.,LTD.
# All Rights Reserved.
#
# 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.
"""
Client side of the scheduler manager RPC API.
"""
from oslo_config import cfg
import oslo_messaging as messaging
from mogan.common import constants
from mogan.common import rpc
from mogan.objects import base as objects_base
CONF = cfg.CONF
class SchedulerAPI(object):
"""Client side of the scheduler RPC API.
API version history:
| 1.0 - Initial version.
"""
RPC_API_VERSION = '1.0'
def __init__(self, topic=None):
super(SchedulerAPI, self).__init__()
self.topic = topic
if self.topic is None:
self.topic = constants.SCHEDULER_TOPIC
target = messaging.Target(topic=self.topic,
version='1.0')
serializer = objects_base.MoganObjectSerializer()
self.client = rpc.get_client(target,
version_cap=self.RPC_API_VERSION,
serializer=serializer)
def select_destinations(self, context, request_spec, filter_properties):
cctxt = self.client.prepare(topic=self.topic, server=CONF.host)
return cctxt.call(context, 'select_destinations',
request_spec=request_spec,
filter_properties=filter_properties)