124 lines
3.4 KiB
Python
124 lines
3.4 KiB
Python
# Copyright 2014 Red Hat, Inc.
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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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__all__ = [
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'init',
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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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]
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import oslo_messaging as messaging
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from oslo_serialization import jsonutils as json
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from oslo_utils import importutils
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from zun.common import context as zun_context
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from zun.common import exception
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profiler = importutils.try_import("osprofiler.profiler")
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TRANSPORT = None
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ALLOWED_EXMODS = [
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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_rpc_transport(
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conf, allowed_remote_exmods=exmods)
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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 JsonPayloadSerializer(messaging.NoOpSerializer):
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@staticmethod
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def serialize_entity(context, entity):
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return json.to_primitive(entity, convert_instances=True)
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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 zun_context.RequestContext.from_dict(context)
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class ProfilerRequestContextSerializer(RequestContextSerializer):
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def serialize_context(self, context):
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_context = super(ProfilerRequestContextSerializer,
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self).serialize_context(context)
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prof = profiler.get()
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if prof:
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trace_info = {
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"hmac_key": prof.hmac_key,
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"base_id": prof.get_base_id(),
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"parent_id": prof.get_id()
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}
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_context.update({"trace_info": trace_info})
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return _context
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def deserialize_context(self, context):
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trace_info = context.pop("trace_info", None)
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if trace_info:
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profiler.init(**trace_info)
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return super(ProfilerRequestContextSerializer,
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self).deserialize_context(context)
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def get_client(target, serializer=None, timeout=None):
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assert TRANSPORT is not None
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return messaging.RPCClient(TRANSPORT,
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target,
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serializer=serializer,
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timeout=timeout)
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