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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 console RPC API.
"""
from oslo.config import cfg
import nova.openstack.common.rpc.proxy
rpcapi_opts = [
cfg.StrOpt('console_topic',
default='console',
help='the topic console proxy nodes listen on'),
]
CONF = cfg.CONF
CONF.register_opts(rpcapi_opts)
rpcapi_cap_opt = cfg.StrOpt('console',
default=None,
help='Set a version cap for messages sent to console services')
CONF.register_opt(rpcapi_cap_opt, 'upgrade_levels')
class ConsoleAPI(nova.openstack.common.rpc.proxy.RpcProxy):
'''Client side of the console rpc API.
API version history:
1.0 - Initial version.
1.1 - Added get_backdoor_port()
... Grizzly supports message version 1.1. So, any changes to existing
methods in 2.x after that point should be done such that they can
handle the version_cap being set to 1.1.
'''
#
# NOTE(russellb): This is the default minimum version that the server
# (manager) side must implement unless otherwise specified using a version
# argument to self.call()/cast()/etc. here. It should be left as X.0 where
# X is the current major API version (1.0, 2.0, ...). For more information
# about rpc API versioning, see the docs in
# openstack/common/rpc/dispatcher.py.
#
BASE_RPC_API_VERSION = '1.0'
VERSION_ALIASES = {
'grizzly': '1.1',
}
def __init__(self, topic=None):
topic = topic if topic else CONF.console_topic
version_cap = self.VERSION_ALIASES.get(CONF.upgrade_levels.console,
CONF.upgrade_levels.console)
super(ConsoleAPI, self).__init__(
topic=topic,
default_version=self.BASE_RPC_API_VERSION,
version_cap=version_cap)
def add_console(self, ctxt, instance_id):
self.cast(ctxt, self.make_msg('add_console', instance_id=instance_id))
def remove_console(self, ctxt, console_id):
self.cast(ctxt, self.make_msg('remove_console', console_id=console_id))
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