FluentFormatter allows to put to message not serializable objects.
For example, during instance boot in extra_keys we have {"instance": <class 'nova.objects.instance.Instance'>} extra.
Extra_keys: https://github.com/openstack/oslo.log/blob/master/oslo_log/formatters.py#L323-L325
One of the sources for the key: https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py#L3085
And during instance boot we have a bunch of errors like:
message: Can't output to log
traceback:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/fluent/sender.py", line 90, in emit_with_time
bytes_ = self._make_packet(label, timestamp, data)
File "/usr/lib/python2.7/dist-packages/fluent/sender.py", line 137, in _make_packet
return msgpack.packb(packet, **self.msgpack_kwargs)
File "/usr/lib/python2.7/dist-packages/msgpack/__init__.py", line 47, in packb
return Packer(**kwargs).pack(o)
File "msgpack/_packer.pyx", line 223, in msgpack._packer.Packer.pack (msgpack/_packer.cpp:223)
File "msgpack/_packer.pyx", line 225, in msgpack._packer.Packer.pack (msgpack/_packer.cpp:225)
File "msgpack/_packer.pyx", line 213, in msgpack._packer.Packer._pack (msgpack/_packer.cpp:213)
File "msgpack/_packer.pyx", line 184, in msgpack._packer.Packer._pack (msgpack/_packer.cpp:184)
File "msgpack/_packer.pyx", line 184, in msgpack._packer.Packer._pack (msgpack/_packer.cpp:184)
File "msgpack/_packer.pyx", line 220, in msgpack._packer.Packer._pack (msgpack/_packer.cpp:220)
TypeError: can't serialize Instance(access_ip_v4=None,access_ip_v6=None,architecture=None,auto_disk_config=False,availability_zone='nova',cell_name=None,cleaned=False,config_drive='',created_at=2018-07-18T13:34:17Z,default_ephemeral_device=None,default_swap_device=None,deleted=False,deleted_at=None,device_metadata=None,disable_terminate=False,display_description=None,display_name='testVM5',ec2_ids=EC2Ids,ephemeral_gb=0,ephemeral_key_uuid=None,fault=<?>,flavor=Flavor(3),host='cmp1',hostname='testvm5',id=30,image_ref='86ec095a-9e8f-4ef4-a07c-46bf9fd781d2',info_cache=InstanceInfoCache,instance_type_id=3,kernel_id='',key_data=None,key_name=None,keypairs=KeyPairList,launch_index=0,launched_at=None,launched_on='cmp1',locked=False,locked_by=None,memory_mb=64,metadata={},migration_context=<?>,new_flavor=None,node='cmp1.dkalashnik-pike-dvr-v2.bud-mk.local',numa_topology=None,old_flavor=None,os_type=None,pci_devices=PciDeviceList,pci_requests=InstancePCIRequests,power_state=0,progress=0,project_id='1f40255ee8bc4f899ac7e7fcf96ef889',ramdisk_id='',reservation_id='r-u06ajlk3',root_device_name='/dev/vda',root_gb=0,security_groups=SecurityGroupList,services=<?>,shutdown_terminate=False,system_metadata={boot_roles='_member_,admin',image_base_image_ref='86ec095a-9e8f-4ef4-a07c-46bf9fd781d2',image_container_format='bare',image_disk_format='qcow2',image_min_disk='0',image_min_ram='0',network_allocated='True',owner_project_name='admin',owner_user_name='admin'},tags=TagList,task_state='spawning',terminated_at=None,updated_at=2018-07-18T13:34:20Z,user_data=None,user_id='176fe61f295e4da4b23fe846d62dc441',uuid=d3856331-fda4-4179-a3d0-9a2a720ffd3d,vcpu_model=VirtCPUModel,vcpus=1,vm_mode=None,vm_state='building')
Fix proposed to branch: master
Review: https:/