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# 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.
import oslo_messaging as messaging
from oslo_messaging.rpc import dispatcher
from osprofiler import profiler
from ironic.common import context as ironic_context
from ironic.common import exception
from ironic.conf import CONF
TRANSPORT = None
NOTIFICATION_TRANSPORT = None
SENSORS_NOTIFIER = None
VERSIONED_NOTIFIER = None
ALLOWED_EXMODS = [
exception.__name__,
]
EXTRA_EXMODS = []
GLOBAL_MANAGER = None
MANAGER_TOPIC = 'ironic.conductor_manager'
def init(conf):
global TRANSPORT, NOTIFICATION_TRANSPORT
global SENSORS_NOTIFIER, VERSIONED_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 = RequestContextSerializer(messaging.JsonPayloadSerializer())
SENSORS_NOTIFIER = messaging.Notifier(NOTIFICATION_TRANSPORT,
serializer=serializer)
if conf.notification_level is None:
VERSIONED_NOTIFIER = messaging.Notifier(NOTIFICATION_TRANSPORT,
serializer=serializer,
driver='noop')
else:
VERSIONED_NOTIFIER = messaging.Notifier(
NOTIFICATION_TRANSPORT,
serializer=serializer,
topics=CONF.versioned_notifications_topics)
def cleanup():
global TRANSPORT, NOTIFICATION_TRANSPORT
global SENSORS_NOTIFIER, VERSIONED_NOTIFIER
assert TRANSPORT is not None
assert NOTIFICATION_TRANSPORT is not None
assert SENSORS_NOTIFIER is not None
assert VERSIONED_NOTIFIER is not None
TRANSPORT.cleanup()
NOTIFICATION_TRANSPORT.cleanup()
TRANSPORT = NOTIFICATION_TRANSPORT = None
SENSORS_NOTIFIER = VERSIONED_NOTIFIER = None
def set_defaults(control_exchange):
messaging.set_transport_defaults(control_exchange)
def get_allowed_exmods():
return ALLOWED_EXMODS + EXTRA_EXMODS
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):
_context = context.to_dict()
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 ironic_context.RequestContext.from_dict(context)
def get_transport_url(url_str=None):
return messaging.TransportURL.parse(CONF, url_str)
def get_client(target, version_cap=None, serializer=None):
assert TRANSPORT is not None
serializer = RequestContextSerializer(serializer)
return messaging.get_rpc_client(
TRANSPORT, target, version_cap=version_cap,
serializer=serializer)
def get_server(target, endpoints, serializer=None):
assert TRANSPORT is not None
serializer = RequestContextSerializer(serializer)
access_policy = dispatcher.DefaultRPCAccessPolicy
return messaging.get_rpc_server(TRANSPORT,
target,
endpoints,
executor='eventlet',
serializer=serializer,
access_policy=access_policy)
def get_sensors_notifier(service=None, host=None, publisher_id=None):
assert SENSORS_NOTIFIER is not None
if not publisher_id:
publisher_id = "%s.%s" % (service, host or CONF.host)
return SENSORS_NOTIFIER.prepare(publisher_id=publisher_id)
def get_versioned_notifier(publisher_id=None):
assert VERSIONED_NOTIFIER is not None
assert publisher_id is not None
return VERSIONED_NOTIFIER.prepare(publisher_id=publisher_id)
def set_global_manager(manager):
global GLOBAL_MANAGER
if GLOBAL_MANAGER is not None and manager is not None:
raise RuntimeError("An attempt to set a global manager twice")
GLOBAL_MANAGER = manager
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