132 lines
3.5 KiB
Python
132 lines
3.5 KiB
Python
# Copyright 2016 NTT DATA
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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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__all__ = [
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'init',
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'cleanup',
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'set_defaults',
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'add_extra_exmods',
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'clear_extra_exmods',
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'get_allowed_exmods',
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'RequestContextSerializer',
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'get_client',
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'get_server',
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]
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import oslo_messaging as messaging
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from oslo_messaging.rpc import dispatcher
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import masakari.context
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import masakari.exception
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from masakari.objects import base
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TRANSPORT = None
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ALLOWED_EXMODS = [
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masakari.exception.__name__,
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]
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EXTRA_EXMODS = []
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def init(conf):
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global TRANSPORT
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exmods = get_allowed_exmods()
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TRANSPORT = messaging.get_transport(conf,
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allowed_remote_exmods=exmods)
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def initialized():
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return None not in [TRANSPORT]
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def cleanup():
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global TRANSPORT
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TRANSPORT.cleanup()
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TRANSPORT = None
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def set_defaults(control_exchange):
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messaging.set_transport_defaults(control_exchange)
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def add_extra_exmods(*args):
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EXTRA_EXMODS.extend(args)
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def clear_extra_exmods():
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del EXTRA_EXMODS[:]
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def get_allowed_exmods():
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return ALLOWED_EXMODS + EXTRA_EXMODS
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class RequestContextSerializer(messaging.Serializer):
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def __init__(self, base):
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self._base = base
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def serialize_entity(self, context, entity):
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if not self._base:
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return entity
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return self._base.serialize_entity(context, entity)
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def deserialize_entity(self, context, entity):
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if not self._base:
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return entity
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return self._base.deserialize_entity(context, entity)
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def serialize_context(self, context):
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return context.to_dict()
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def deserialize_context(self, context):
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return masakari.context.RequestContext.from_dict(context)
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def get_client(target, version_cap=None, serializer=None):
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assert TRANSPORT is not None
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serializer = RequestContextSerializer(serializer)
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return messaging.RPCClient(TRANSPORT,
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target,
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version_cap=version_cap,
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serializer=serializer)
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def get_server(target, endpoints, serializer=None):
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assert TRANSPORT is not None
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access_policy = dispatcher.DefaultRPCAccessPolicy
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serializer = RequestContextSerializer(serializer)
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return messaging.get_rpc_server(TRANSPORT,
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target,
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endpoints,
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executor='eventlet',
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serializer=serializer,
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access_policy=access_policy)
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class RPCAPI(object):
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"""Mixin class aggregating methods related to RPC API compatibility."""
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RPC_API_VERSION = '1.0'
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TOPIC = ''
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BINARY = ''
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def __init__(self):
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target = messaging.Target(topic=self.TOPIC,
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version=self.RPC_API_VERSION)
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serializer = base.MasakariObjectSerializer()
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self.client = get_client(target, serializer=serializer)
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