135 lines
4.1 KiB
Python
135 lines
4.1 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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# All Rights Reserved.
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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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from oslo.config import cfg
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from oslo import messaging
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from oslo.messaging import serializer as om_serializer
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from neutron.common import exceptions
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from neutron import context
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from neutron.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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TRANSPORT = None
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NOTIFIER = None
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ALLOWED_EXMODS = [
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exceptions.__name__,
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]
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EXTRA_EXMODS = []
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TRANSPORT_ALIASES = {
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'neutron.openstack.common.rpc.impl_fake': 'fake',
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'neutron.openstack.common.rpc.impl_qpid': 'qpid',
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'neutron.openstack.common.rpc.impl_kombu': 'rabbit',
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'neutron.openstack.common.rpc.impl_zmq': 'zmq',
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'neutron.rpc.impl_fake': 'fake',
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'neutron.rpc.impl_qpid': 'qpid',
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'neutron.rpc.impl_kombu': 'rabbit',
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'neutron.rpc.impl_zmq': 'zmq',
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}
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def init(conf):
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global TRANSPORT, NOTIFIER
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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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aliases=TRANSPORT_ALIASES)
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NOTIFIER = messaging.Notifier(TRANSPORT)
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def cleanup():
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global TRANSPORT, NOTIFIER
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assert TRANSPORT is not None
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assert NOTIFIER is not None
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TRANSPORT.cleanup()
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TRANSPORT = NOTIFIER = None
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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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def get_client(target, version_cap=None, serializer=None):
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assert TRANSPORT is not None
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serializer = PluginRpcSerializer(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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serializer = PluginRpcSerializer(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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def get_notifier(service=None, host=None, publisher_id=None):
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assert NOTIFIER is not None
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if not publisher_id:
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publisher_id = "%s.%s" % (service, host or cfg.CONF.host)
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return NOTIFIER.prepare(publisher_id=publisher_id)
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class PluginRpcSerializer(om_serializer.Serializer):
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"""This serializer is used to convert RPC common context into
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Neutron Context.
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"""
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def __init__(self, base):
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super(PluginRpcSerializer, self).__init__()
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self._base = base
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def serialize_entity(self, ctxt, entity):
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if not self._base:
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return entity
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return self._base.serialize_entity(ctxt, entity)
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def deserialize_entity(self, ctxt, entity):
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if not self._base:
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return entity
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return self._base.deserialize_entity(ctxt, entity)
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def serialize_context(self, ctxt):
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return ctxt.to_dict()
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def deserialize_context(self, ctxt):
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rpc_ctxt_dict = ctxt.copy()
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user_id = rpc_ctxt_dict.pop('user_id', None)
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if not user_id:
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user_id = rpc_ctxt_dict.pop('user', None)
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tenant_id = rpc_ctxt_dict.pop('tenant_id', None)
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if not tenant_id:
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tenant_id = rpc_ctxt_dict.pop('project_id', None)
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return context.Context(user_id, tenant_id,
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load_admin_roles=False, **rpc_ctxt_dict)
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