c5bc3c21b9
Change-Id: I09920ffdf120520112ffe1d7d7e9a3b94028019c
119 lines
3.8 KiB
Python
119 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2013 eNovance <licensing@enovance.com>
|
|
#
|
|
# Author: Mehdi Abaakouk <mehdi.abaakouk@enovance.com>
|
|
#
|
|
# 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.
|
|
|
|
import eventlet
|
|
from oslo.config import cfg
|
|
import oslo.messaging
|
|
from oslo.serialization import jsonutils
|
|
|
|
from heat.common import context
|
|
|
|
|
|
TRANSPORT = None
|
|
NOTIFIER = None
|
|
|
|
_ALIASES = {
|
|
'heat.openstack.common.rpc.impl_kombu': 'rabbit',
|
|
'heat.openstack.common.rpc.impl_qpid': 'qpid',
|
|
'heat.openstack.common.rpc.impl_zmq': 'zmq',
|
|
}
|
|
|
|
|
|
class RequestContextSerializer(oslo.messaging.Serializer):
|
|
def __init__(self, base):
|
|
self._base = base
|
|
|
|
def serialize_entity(self, ctxt, entity):
|
|
if not self._base:
|
|
return entity
|
|
return self._base.serialize_entity(ctxt, entity)
|
|
|
|
def deserialize_entity(self, ctxt, entity):
|
|
if not self._base:
|
|
return entity
|
|
return self._base.deserialize_entity(ctxt, entity)
|
|
|
|
@staticmethod
|
|
def serialize_context(ctxt):
|
|
return ctxt.to_dict()
|
|
|
|
@staticmethod
|
|
def deserialize_context(ctxt):
|
|
return context.RequestContext.from_dict(ctxt)
|
|
|
|
|
|
class JsonPayloadSerializer(oslo.messaging.NoOpSerializer):
|
|
@classmethod
|
|
def serialize_entity(cls, context, entity):
|
|
return jsonutils.to_primitive(entity, convert_instances=True)
|
|
|
|
|
|
def setup(url=None, optional=False):
|
|
"""Initialise the oslo.messaging layer."""
|
|
global TRANSPORT, NOTIFIER
|
|
|
|
if url and url.startswith("fake://"):
|
|
# NOTE(sileht): oslo.messaging fake driver uses time.sleep
|
|
# for task switch, so we need to monkey_patch it
|
|
eventlet.monkey_patch(time=True)
|
|
|
|
if not TRANSPORT:
|
|
oslo.messaging.set_transport_defaults('heat')
|
|
exmods = ['heat.common.exception']
|
|
try:
|
|
TRANSPORT = oslo.messaging.get_transport(
|
|
cfg.CONF, url, allowed_remote_exmods=exmods, aliases=_ALIASES)
|
|
except oslo.messaging.InvalidTransportURL as e:
|
|
TRANSPORT = None
|
|
if not optional or e.url:
|
|
# NOTE(sileht): oslo.messaging is configured but unloadable
|
|
# so reraise the exception
|
|
raise
|
|
|
|
if not NOTIFIER and TRANSPORT:
|
|
serializer = RequestContextSerializer(JsonPayloadSerializer())
|
|
NOTIFIER = oslo.messaging.Notifier(TRANSPORT, serializer=serializer)
|
|
|
|
|
|
def cleanup():
|
|
"""Cleanup the oslo.messaging layer."""
|
|
global TRANSPORT, NOTIFIER
|
|
if TRANSPORT:
|
|
TRANSPORT.cleanup()
|
|
TRANSPORT = NOTIFIER = None
|
|
|
|
|
|
def get_rpc_server(target, endpoint):
|
|
"""Return a configured oslo.messaging rpc server."""
|
|
serializer = RequestContextSerializer(JsonPayloadSerializer())
|
|
return oslo.messaging.get_rpc_server(TRANSPORT, target, [endpoint],
|
|
executor='eventlet',
|
|
serializer=serializer)
|
|
|
|
|
|
def get_rpc_client(**kwargs):
|
|
"""Return a configured oslo.messaging RPCClient."""
|
|
target = oslo.messaging.Target(**kwargs)
|
|
serializer = RequestContextSerializer(JsonPayloadSerializer())
|
|
return oslo.messaging.RPCClient(TRANSPORT, target,
|
|
serializer=serializer)
|
|
|
|
|
|
def get_notifier(publisher_id):
|
|
"""Return a configured oslo.messaging notifier."""
|
|
return NOTIFIER.prepare(publisher_id=publisher_id)
|