Public bug reported:
For some reason I need to add a RPC interface to nova-compute. When I
tested the new interface, I got this error:
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server
[req-ff6e2750-98a2-4c13-95d0-548d9f66101d 3ff71b27e1e9446c8972c423e1b0d81e
123a456966664881a8380faa009e752f - default default] Exception during message
handling: AttributeError: 'SchedulerReportClient' object has no attribute
'obj_to_primitive'
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server Traceback (most
recent call last):
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 163, in
_process_incoming
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server res =
self.dispatcher.dispatch(message)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 268,
in dispatch
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self._do_dispatch(endpoint, method, ctxt, args)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 195,
in _do_dispatch
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self.serializer.serialize_entity(ctxt, result)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/rpc.py", line 130, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self._base.serialize_entity(context, entity)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 237, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server entity)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 223, in
_process_iterable
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server for k, v in
values.items()})
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 223, in
<dictcomp>
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server for k, v in
values.items()})
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 240, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server entity =
entity.obj_to_primitive()
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/scheduler/client/__init__.py",
line 39, in __run_method
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
getattr(self.instance, __name)(*args, **kwargs)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server AttributeError:
'SchedulerReportClient' object has no attribute 'obj_to_primitive'
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server
The function`serialize_entity` in nova/nova/objects/base.py is:
def serialize_entity(self, context, entity):
if isinstance(entity, (tuple, list, set, dict)):
entity = self._process_iterable(context, self.serialize_entity,
entity)
elif (hasattr(entity, 'obj_to_primitive') and
callable(entity.obj_to_primitive)):
entity = entity.obj_to_primitive()
return entity
(hasattr(entity, 'obj_to_primitive') and callable(entity.obj_to_primitive) are
always return true because entity is a LazyLoader class and it implemented
`__getattr__`.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1790444
Title:
Nova crashes when added new RPC interface
Status in OpenStack Compute (nova):
New
Bug description:
For some reason I need to add a RPC interface to nova-compute. When I
tested the new interface, I got this error:
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server
[req-ff6e2750-98a2-4c13-95d0-548d9f66101d 3ff71b27e1e9446c8972c423e1b0d81e
123a456966664881a8380faa009e752f - default default] Exception during message
handling: AttributeError: 'SchedulerReportClient' object has no attribute
'obj_to_primitive'
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server Traceback (most
recent call last):
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 163, in
_process_incoming
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server res =
self.dispatcher.dispatch(message)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 268,
in dispatch
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self._do_dispatch(endpoint, method, ctxt, args)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 195,
in _do_dispatch
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self.serializer.serialize_entity(ctxt, result)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/rpc.py", line 130, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
self._base.serialize_entity(context, entity)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 237, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server entity)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 223, in
_process_iterable
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server for k, v in
values.items()})
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 223, in
<dictcomp>
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server for k, v in
values.items()})
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/objects/base.py", line 240, in
serialize_entity
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server entity =
entity.obj_to_primitive()
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server File
"/openstack/lib/python2.7/site-packages/nova/scheduler/client/__init__.py",
line 39, in __run_method
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server return
getattr(self.instance, __name)(*args, **kwargs)
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server AttributeError:
'SchedulerReportClient' object has no attribute 'obj_to_primitive'
2018-09-03 02:23:56.870 70765 ERROR oslo_messaging.rpc.server
The function`serialize_entity` in nova/nova/objects/base.py is:
def serialize_entity(self, context, entity):
if isinstance(entity, (tuple, list, set, dict)):
entity = self._process_iterable(context, self.serialize_entity,
entity)
elif (hasattr(entity, 'obj_to_primitive') and
callable(entity.obj_to_primitive)):
entity = entity.obj_to_primitive()
return entity
(hasattr(entity, 'obj_to_primitive') and callable(entity.obj_to_primitive)
are always return true because entity is a LazyLoader class and it implemented
`__getattr__`.
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