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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012, Red Hat, 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.
"""
Client side of the scheduler manager RPC API.
"""
from nova import flags
import nova.openstack.common.rpc.proxy
FLAGS = flags.FLAGS
class SchedulerAPI(nova.openstack.common.rpc.proxy.RpcProxy):
'''Client side of the scheduler rpc API.
API version history:
1.0 - Initial version.
'''
BASE_RPC_API_VERSION = '1.0'
def __init__(self):
super(SchedulerAPI, self).__init__(topic=FLAGS.scheduler_topic,
default_version=self.BASE_RPC_API_VERSION)
def run_instance(self, ctxt, topic, request_spec, admin_password,
injected_files, requested_networks, is_first_time,
filter_properties, reservations, call=True):
rpc_method = self.call if call else self.cast
return rpc_method(ctxt, self.make_msg('run_instance', topic=topic,
request_spec=request_spec, admin_password=admin_password,
injected_files=injected_files,
requested_networks=requested_networks,
is_first_time=is_first_time,
filter_properties=filter_properties,
reservations=reservations))
def prep_resize(self, ctxt, topic, instance_uuid, instance_type_id, image,
update_db, request_spec, filter_properties):
self.cast(ctxt, self.make_msg('prep_resize', topic=topic,
instance_uuid=instance_uuid, instance_type_id=instance_type_id,
image=image, update_db=update_db, request_spec=request_spec,
filter_properties=filter_properties))
def show_host_resources(self, ctxt, host):
return self.call(ctxt, self.make_msg('show_host_resources', host=host))
def live_migration(self, ctxt, block_migration, disk_over_commit,
instance_id, dest, topic):
# NOTE(comstud): Call vs cast so we can get exceptions back, otherwise
# this call in the scheduler driver doesn't return anything.
return self.call(ctxt, self.make_msg('live_migration',
block_migration=block_migration,
disk_over_commit=disk_over_commit, instance_id=instance_id,
dest=dest, topic=topic))
def update_service_capabilities(self, ctxt, service_name, host,
capabilities):
self.fanout_cast(ctxt, self.make_msg('update_service_capabilities',
service_name=service_name, host=host,
capabilities=capabilities))
def get_host_list(self, ctxt):
return self.call(ctxt, self.make_msg('get_host_list'))
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