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# Copyright 2014 OpenStack Foundation
# 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.
# NOTE(esp): This code was taken from nova
__all__ = [
'init',
'cleanup',
'set_defaults',
'add_extra_exmods',
'clear_extra_exmods',
'get_allowed_exmods',
'get_client',
'get_server',
'get_notifier',
]
from oslo_config import cfg
import oslo_messaging as messaging
from oslo_messaging.rpc import dispatcher
import trove.common.exception
from trove.common.rpc import secure_serializer as ssz
from trove.common.rpc import serializer as sz
CONF = cfg.CONF
TRANSPORT = None
NOTIFICATION_TRANSPORT = None
NOTIFIER = None
ALLOWED_EXMODS = [
trove.common.exception.__name__,
]
EXTRA_EXMODS = []
def init(conf):
global TRANSPORT, NOTIFICATION_TRANSPORT, NOTIFIER
exmods = get_allowed_exmods()
TRANSPORT = messaging.get_rpc_transport(conf,
allowed_remote_exmods=exmods)
NOTIFICATION_TRANSPORT = messaging.get_notification_transport(
conf,
allowed_remote_exmods=exmods)
serializer = sz.TroveRequestContextSerializer(
messaging.JsonPayloadSerializer())
NOTIFIER = messaging.Notifier(NOTIFICATION_TRANSPORT,
serializer=serializer)
def cleanup():
global TRANSPORT, NOTIFICATION_TRANSPORT, NOTIFIER
assert TRANSPORT is not None
assert NOTIFICATION_TRANSPORT is not None
assert NOTIFIER is not None
TRANSPORT.cleanup()
NOTIFICATION_TRANSPORT.cleanup()
TRANSPORT = NOTIFICATION_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
def get_transport_url(url_str=None):
return messaging.TransportURL.parse(CONF, url_str)
def get_client(target, key, version_cap=None, serializer=None,
secure_serializer=ssz.SecureSerializer):
assert TRANSPORT is not None
# BUG(1650518): Cleanup in the Pike release
# uncomment this (following) line in the pike release
# assert key is not None
serializer = secure_serializer(
sz.TroveRequestContextSerializer(serializer), key)
return messaging.RPCClient(TRANSPORT,
target,
version_cap=version_cap,
serializer=serializer)
def get_server(target, endpoints, key, serializer=None,
secure_serializer=ssz.SecureSerializer):
assert TRANSPORT is not None
# Thread module is not monkeypatched if remote debugging is enabled.
# Using eventlet executor without monkepatching thread module will
# lead to unpredictable results.
from trove.common import debug_utils
debug_utils.setup()
executor = "blocking" if debug_utils.enabled() else "eventlet"
# BUG(1650518): Cleanup in the Pike release
# uncomment this (following) line in the pike release
# assert key is not None
serializer = secure_serializer(
sz.TroveRequestContextSerializer(serializer), key)
return messaging.get_rpc_server(
TRANSPORT,
target,
endpoints,
executor=executor,
serializer=serializer,
access_policy=dispatcher.DefaultRPCAccessPolicy)
def get_notifier(service=None, host=None, publisher_id=None):
assert NOTIFIER is not None
if not publisher_id:
publisher_id = "%s.%s" % (service, host or CONF.host)
return NOTIFIER.prepare(publisher_id=publisher_id)
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