07bb2a1ba5
Reorganize code and fix some coding style violation. Change-Id: Ie5e18cf65ad98f07cd2e4edd8690f53df9bedfeb
120 lines
4.0 KiB
Python
120 lines
4.0 KiB
Python
# Copyright 2015 Huawei Technologies Co., Ltd.
|
|
#
|
|
# 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 inspect import stack
|
|
|
|
import neutron.common.rpc as neutron_rpc
|
|
import neutron.common.topics as neutron_topics
|
|
import neutron.context as neutron_context
|
|
from oslo_config import cfg
|
|
from oslo_log import log as logging
|
|
import oslo_messaging
|
|
|
|
from tricircle.common.serializer import CascadeSerializer as Serializer
|
|
|
|
TRANSPORT = oslo_messaging.get_transport(cfg.CONF)
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class NetworkingRpcApi(object):
|
|
def __init__(self):
|
|
if not neutron_rpc.TRANSPORT:
|
|
neutron_rpc.init(cfg.CONF)
|
|
target = oslo_messaging.Target(topic=neutron_topics.PLUGIN,
|
|
version='1.0')
|
|
self.client = neutron_rpc.get_client(target)
|
|
|
|
# adapt tricircle context to neutron context
|
|
def _make_neutron_context(self, context):
|
|
return neutron_context.ContextBase(context.user, context.tenant,
|
|
auth_token=context.auth_token,
|
|
is_admin=context.is_admin,
|
|
request_id=context.request_id,
|
|
user_name=context.user_name,
|
|
tenant_name=context.tenant_name)
|
|
|
|
def update_port_up(self, context, port_id):
|
|
call_context = self.client.prepare()
|
|
return call_context.call(self._make_neutron_context(context),
|
|
'update_port_up', port_id=port_id)
|
|
|
|
def update_port_down(self, context, port_id):
|
|
call_context = self.client.prepare()
|
|
return call_context.call(self._make_neutron_context(context),
|
|
'update_port_down', port_id=port_id)
|
|
|
|
|
|
def create_client(target):
|
|
return oslo_messaging.RPCClient(
|
|
TRANSPORT,
|
|
target,
|
|
serializer=Serializer(),
|
|
)
|
|
|
|
|
|
class AutomaticRpcWrapper(object):
|
|
def __init__(self, send_message_callback):
|
|
self._send_message = send_message_callback
|
|
|
|
def _send_message(self, context, method, payload, cast=False):
|
|
"""Cast the payload to the running cascading service instances."""
|
|
|
|
cctx = self._client.prepare(
|
|
fanout=cast,
|
|
)
|
|
LOG.debug(
|
|
'%(what)s at %(topic)s.%(namespace)s the message %(method)s',
|
|
{
|
|
'topic': cctx.target.topic,
|
|
'namespace': cctx.target.namespace,
|
|
'method': method,
|
|
'what': {True: 'Fanout notify', False: 'Method call'}[cast],
|
|
}
|
|
)
|
|
|
|
if cast:
|
|
cctx.cast(context, method, payload=payload)
|
|
else:
|
|
return cctx.call(context, method, payload=payload)
|
|
|
|
def send(self, cast):
|
|
"""Autowrap an API call with a send_message() call
|
|
|
|
This function uses python tricks to implement a passthrough call from
|
|
the calling API to the cascade service
|
|
"""
|
|
caller = stack()[1]
|
|
frame = caller[0]
|
|
method_name = caller[3]
|
|
context = frame.f_locals.get('context', {})
|
|
|
|
payload = {}
|
|
for varname in frame.f_code.co_varnames:
|
|
if varname in ("self", "context"):
|
|
continue
|
|
|
|
try:
|
|
payload[varname] = frame.f_locals[varname]
|
|
except KeyError:
|
|
pass
|
|
|
|
LOG.info(
|
|
"Farwarding request to %s(%s)",
|
|
method_name,
|
|
payload,
|
|
)
|
|
return self._send_message(context, method_name, payload, cast)
|