nova/nova/rpc.py

67 lines
2.0 KiB
Python

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# 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.
from nova.utils import import_object
from nova.rpc_backends.common import RemoteError, LOG
from nova import flags
FLAGS = flags.FLAGS
flags.DEFINE_string('rpc_backend',
'nova.rpc_backends.amqp',
"The messaging module to use, defaults to AMQP.")
RPCIMPL = import_object(FLAGS.rpc_backend)
def create_connection(new=True):
return RPCIMPL.Connection.instance(new=True)
def create_consumer(conn, topic, proxy, fanout=False):
if fanout:
return RPCIMPL.FanoutAdapterConsumer(
connection=conn,
topic=topic,
proxy=proxy)
else:
return RPCIMPL.TopicAdapterConsumer(
connection=conn,
topic=topic,
proxy=proxy)
def create_consumer_set(conn, consumers):
return RPCIMPL.ConsumerSet(connection=conn, consumer_list=consumers)
def call(context, topic, msg):
return RPCIMPL.call(context, topic, msg)
def cast(context, topic, msg):
return RPCIMPL.cast(context, topic, msg)
def fanout_cast(context, topic, msg):
return RPCIMPL.fanout_cast(context, topic, msg)
def multicall(context, topic, msg):
return RPCIMPL.multicall(context, topic, msg)