55 lines
1.7 KiB
Python
55 lines
1.7 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.
|
|
|
|
import eventlet
|
|
import oslo_messaging as messaging
|
|
from oslo_utils import importutils
|
|
|
|
from mogan.common import exception
|
|
from mogan.conf import CONF
|
|
|
|
|
|
class SchedulerManager(object):
|
|
"""Mogan Scheduler manager main class."""
|
|
|
|
RPC_API_VERSION = '1.0'
|
|
|
|
target = messaging.Target(version=RPC_API_VERSION)
|
|
|
|
def __init__(self, topic, host=None):
|
|
super(SchedulerManager, self).__init__()
|
|
self.host = host or CONF.host
|
|
self.topic = topic
|
|
scheduler_driver = CONF.scheduler.scheduler_driver
|
|
self.driver = importutils.import_object(scheduler_driver)
|
|
self._startup_delay = True
|
|
|
|
def init_host(self):
|
|
self._startup_delay = False
|
|
|
|
def _wait_for_scheduler(self):
|
|
while self._startup_delay and not self.driver.is_ready():
|
|
eventlet.sleep(1)
|
|
|
|
@messaging.expected_exceptions(exception.NoValidNode)
|
|
def select_destinations(self, ctxt, request_spec, filter_properties):
|
|
self._wait_for_scheduler()
|
|
dests = self.driver.schedule(
|
|
ctxt, request_spec, filter_properties)
|
|
return dests
|
|
|
|
def del_host(self):
|
|
pass
|