6fe89acd21
Add a temporary nova.rpcclient.RPCClient helper class which translates oslo.messaging.rpc.RPCClient compatible calls into calls on a RpcProxy object. Use this new class to port all of the rpcapi modules over to the new RPCClient so that the final port of Nova over to oslo.messaging will be smaller and easier to review. This patch contains no functional changes at all, except that all client side RPCs go through this temporary helper class. blueprint: oslo-messaging Change-Id: Iee86c36bcc474a604993618b8a2255af8c3d2f48
147 lines
6.0 KiB
Python
147 lines
6.0 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012, Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Client side of the scheduler manager RPC API.
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"""
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from oslo.config import cfg
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from nova.openstack.common import jsonutils
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from nova import rpcclient
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rpcapi_opts = [
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cfg.StrOpt('scheduler_topic',
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default='scheduler',
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help='the topic scheduler nodes listen on'),
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]
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CONF = cfg.CONF
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CONF.register_opts(rpcapi_opts)
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rpcapi_cap_opt = cfg.StrOpt('scheduler',
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help='Set a version cap for messages sent to scheduler services')
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CONF.register_opt(rpcapi_cap_opt, 'upgrade_levels')
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class SchedulerAPI(rpcclient.RpcProxy):
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'''Client side of the scheduler rpc API.
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API version history:
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1.0 - Initial version.
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1.1 - Changes to prep_resize():
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- remove instance_uuid, add instance
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- remove instance_type_id, add instance_type
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- remove topic, it was unused
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1.2 - Remove topic from run_instance, it was unused
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1.3 - Remove instance_id, add instance to live_migration
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1.4 - Remove update_db from prep_resize
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1.5 - Add reservations argument to prep_resize()
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1.6 - Remove reservations argument to run_instance()
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1.7 - Add create_volume() method, remove topic from live_migration()
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2.0 - Remove 1.x backwards compat
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2.1 - Add image_id to create_volume()
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2.2 - Remove reservations argument to create_volume()
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2.3 - Remove create_volume()
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2.4 - Change update_service_capabilities()
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- accepts a list of capabilities
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2.5 - Add get_backdoor_port()
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2.6 - Add select_hosts()
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... Grizzly supports message version 2.6. So, any changes to existing
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methods in 2.x after that point should be done such that they can
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handle the version_cap being set to 2.6.
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2.7 - Add select_destinations()
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2.8 - Deprecate prep_resize() -- JUST KIDDING. It is still used
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by the compute manager for retries.
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2.9 - Added the leagacy_bdm_in_spec parameter to run_instance()
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2.10 - Deprecated live_migration() call, moved to conductor
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'''
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#
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# NOTE(russellb): This is the default minimum version that the server
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# (manager) side must implement unless otherwise specified using a version
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# argument to self.call()/cast()/etc. here. It should be left as X.0 where
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# X is the current major API version (1.0, 2.0, ...). For more information
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# about rpc API versioning, see the docs in
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# openstack/common/rpc/dispatcher.py.
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#
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BASE_RPC_API_VERSION = '2.0'
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VERSION_ALIASES = {
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'grizzly': '2.6',
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}
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def __init__(self):
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version_cap = self.VERSION_ALIASES.get(CONF.upgrade_levels.scheduler,
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CONF.upgrade_levels.scheduler)
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super(SchedulerAPI, self).__init__(topic=CONF.scheduler_topic,
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default_version=self.BASE_RPC_API_VERSION,
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version_cap=version_cap)
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self.client = self.get_client()
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def select_destinations(self, ctxt, request_spec, filter_properties):
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cctxt = self.client.prepare(version='2.7')
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return cctxt.call(ctxt, 'select_destinations',
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request_spec=request_spec, filter_properties=filter_properties)
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def run_instance(self, ctxt, request_spec, admin_password,
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injected_files, requested_networks, is_first_time,
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filter_properties, legacy_bdm_in_spec=True):
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version = '2.0'
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msg_kwargs = {'request_spec': request_spec,
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'admin_password': admin_password,
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'injected_files': injected_files,
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'requested_networks': requested_networks,
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'is_first_time': is_first_time,
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'filter_properties': filter_properties}
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if self.client.can_send_version('2.9'):
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version = '2.9'
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msg_kwargs['legacy_bdm_in_spec'] = legacy_bdm_in_spec
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cctxt = self.client.prepare(version=version)
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return cctxt.cast(ctxt, 'run_instance', **msg_kwargs)
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def prep_resize(self, ctxt, instance, instance_type, image,
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request_spec, filter_properties, reservations):
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instance_p = jsonutils.to_primitive(instance)
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instance_type_p = jsonutils.to_primitive(instance_type)
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reservations_p = jsonutils.to_primitive(reservations)
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image_p = jsonutils.to_primitive(image)
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self.client.cast(ctxt, 'prep_resize',
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instance=instance_p, instance_type=instance_type_p,
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image=image_p, request_spec=request_spec,
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filter_properties=filter_properties,
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reservations=reservations_p)
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def update_service_capabilities(self, ctxt, service_name, host,
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capabilities):
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#NOTE(jogo) This is deprecated, but is used by the deprecated
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# publish_service_capabilities call. So this can begin its removal
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# process once publish_service_capabilities is removed.
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cctxt = self.client.prepare(fanout=True, version='2.4')
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cctxt.cast(ctxt, 'update_service_capabilities',
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service_name=service_name, host=host,
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capabilities=capabilities)
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def select_hosts(self, ctxt, request_spec, filter_properties):
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cctxt = self.client.prepare(version='2.6')
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return cctxt.call(ctxt, 'select_hosts',
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request_spec=request_spec,
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filter_properties=filter_properties)
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