181 lines
5.1 KiB
Python
181 lines
5.1 KiB
Python
# Copyright 2014 Red Hat, Inc.
|
|
# 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.
|
|
|
|
__all__ = [
|
|
'init',
|
|
'cleanup',
|
|
'set_defaults',
|
|
'add_extra_exmods',
|
|
'clear_extra_exmods',
|
|
'get_allowed_exmods',
|
|
'RequestContextSerializer',
|
|
'get_client',
|
|
'get_server',
|
|
'get_notifier',
|
|
]
|
|
|
|
import socket
|
|
|
|
|
|
import oslo_messaging as messaging
|
|
from oslo_messaging.rpc import dispatcher
|
|
from oslo_serialization import jsonutils
|
|
from oslo_utils import importutils
|
|
|
|
from magnum.common import context as magnum_context
|
|
from magnum.common import exception
|
|
import magnum.conf
|
|
|
|
profiler = importutils.try_import("osprofiler.profiler")
|
|
|
|
CONF = magnum.conf.CONF
|
|
TRANSPORT = None
|
|
NOTIFIER = None
|
|
|
|
ALLOWED_EXMODS = [
|
|
exception.__name__,
|
|
]
|
|
EXTRA_EXMODS = []
|
|
|
|
|
|
def init(conf):
|
|
global TRANSPORT, NOTIFIER
|
|
exmods = get_allowed_exmods()
|
|
TRANSPORT = messaging.get_rpc_transport(conf,
|
|
allowed_remote_exmods=exmods)
|
|
serializer = RequestContextSerializer(JsonPayloadSerializer())
|
|
NOTIFIER = messaging.Notifier(TRANSPORT, serializer=serializer)
|
|
|
|
|
|
def cleanup():
|
|
global TRANSPORT, NOTIFIER
|
|
assert TRANSPORT is not None
|
|
assert NOTIFIER is not None
|
|
TRANSPORT.cleanup()
|
|
TRANSPORT = NOTIFIER = None
|
|
|
|
|
|
def set_defaults(control_exchange):
|
|
messaging.set_transport_defaults(control_exchange)
|
|
|
|
|
|
def add_extra_exmods(*args):
|
|
EXTRA_EXMODS.extend(args)
|
|
|
|
|
|
def clear_extra_exmods():
|
|
del EXTRA_EXMODS[:]
|
|
|
|
|
|
def get_allowed_exmods():
|
|
return ALLOWED_EXMODS + EXTRA_EXMODS
|
|
|
|
|
|
class JsonPayloadSerializer(messaging.NoOpSerializer):
|
|
@staticmethod
|
|
def serialize_entity(context, entity):
|
|
return jsonutils.to_primitive(entity, convert_instances=True)
|
|
|
|
|
|
class RequestContextSerializer(messaging.Serializer):
|
|
|
|
def __init__(self, base):
|
|
self._base = base
|
|
|
|
def serialize_entity(self, context, entity):
|
|
if not self._base:
|
|
return entity
|
|
return self._base.serialize_entity(context, entity)
|
|
|
|
def deserialize_entity(self, context, entity):
|
|
if not self._base:
|
|
return entity
|
|
return self._base.deserialize_entity(context, entity)
|
|
|
|
def serialize_context(self, context):
|
|
return context.to_dict()
|
|
|
|
def deserialize_context(self, context):
|
|
return magnum_context.RequestContext.from_dict(context)
|
|
|
|
|
|
class ProfilerRequestContextSerializer(RequestContextSerializer):
|
|
def serialize_context(self, context):
|
|
_context = super(ProfilerRequestContextSerializer,
|
|
self).serialize_context(context)
|
|
|
|
prof = profiler.get()
|
|
if prof:
|
|
trace_info = {
|
|
"hmac_key": prof.hmac_key,
|
|
"base_id": prof.get_base_id(),
|
|
"parent_id": prof.get_id()
|
|
}
|
|
_context.update({"trace_info": trace_info})
|
|
|
|
return _context
|
|
|
|
def deserialize_context(self, context):
|
|
trace_info = context.pop("trace_info", None)
|
|
if trace_info:
|
|
profiler.init(**trace_info)
|
|
|
|
return super(ProfilerRequestContextSerializer,
|
|
self).deserialize_context(context)
|
|
|
|
|
|
def get_transport_url(url_str=None):
|
|
return messaging.TransportURL.parse(CONF, url_str)
|
|
|
|
|
|
def get_client(target, version_cap=None, serializer=None, timeout=None):
|
|
assert TRANSPORT is not None
|
|
if profiler:
|
|
serializer = ProfilerRequestContextSerializer(serializer)
|
|
else:
|
|
serializer = RequestContextSerializer(serializer)
|
|
|
|
return messaging.RPCClient(TRANSPORT,
|
|
target,
|
|
version_cap=version_cap,
|
|
serializer=serializer,
|
|
timeout=timeout)
|
|
|
|
|
|
def get_server(target, endpoints, serializer=None):
|
|
assert TRANSPORT is not None
|
|
access_policy = dispatcher.DefaultRPCAccessPolicy
|
|
if profiler:
|
|
serializer = ProfilerRequestContextSerializer(serializer)
|
|
else:
|
|
serializer = RequestContextSerializer(serializer)
|
|
|
|
return messaging.get_rpc_server(TRANSPORT,
|
|
target,
|
|
endpoints,
|
|
executor='eventlet',
|
|
serializer=serializer,
|
|
access_policy=access_policy)
|
|
|
|
|
|
def get_notifier(service='container-infra', host=None, publisher_id=None):
|
|
assert NOTIFIER is not None
|
|
myhost = CONF.host
|
|
if myhost is None:
|
|
myhost = socket.getfqdn()
|
|
if not publisher_id:
|
|
publisher_id = "%s.%s" % (service, host or myhost)
|
|
return NOTIFIER.prepare(publisher_id=publisher_id)
|