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[Bug 2095364] [NEW] List server API v2.96 returns 500 if there is missing request spec object

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Masahito Muroi <2095364@xxxxxxxxxxxxxxxxxx>
Date: Mon, 20 Jan 2025 17:00:46 -0000
Reply-to: Bug 2095364 <2095364@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Public bug reported:

The List Server API and List Server detail API with v2.96 microversion
hits 500 error if one or more instance's request spec object don't exist
by any reason.

The error reason is v2.96 and later version requires the request_spec
information for the requested_az information, but the latest list view
builder code assumes all request_spec objects for all instances exist
correctly.


## Stacktrace

2025-01-16T06:39:41.756 10 ERROR nova.api.openstack.wsgi [F] [None req-0605cf7e-09db-4ba1-9914-68d34d935587 9d5b1aa120675648abcb2cb156f8020b 792bb91fb3a254b4b5cbf61bed57854e - - default default] Unexpected exception in API method: KeyError: '5d9070aa-33da-46bc-94bc-604746ecfbd2'
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-] Traceback (most recent call last):
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/wsgi.py", line 665, in wrapped
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return f(*args, **kwargs)
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   [Previous line repeated 2 more times]
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/servers.py", line 146, in detail
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     servers = self._get_servers(req, is_detail=True)
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/servers.py", line 360, in _get_servers
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     response = self._view_builder.detail(
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 475, in detail
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     servers_dict = self._list_view(self.show, request, instances,
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 529, in _list_view
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     server_list = [func(request, server,
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 535, in <listcomp>
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     provided_az=req_specs_dict[server.uuid])["server"]
2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-] KeyError: '5d9070aa-33da-46bc-94bc-604746ecfbd2'

** Affects: nova
     Importance: Undecided
     Assignee: Masahito Muroi (muroi-masahito)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Masahito Muroi (muroi-masahito)

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https://bugs.launchpad.net/bugs/2095364

Title:
  List server API v2.96 returns 500 if there is missing request spec
  object

Status in OpenStack Compute (nova):
  New

Bug description:
  The List Server API and List Server detail API with v2.96 microversion
  hits 500 error if one or more instance's request spec object don't
  exist by any reason.

  The error reason is v2.96 and later version requires the request_spec
  information for the requested_az information, but the latest list view
  builder code assumes all request_spec objects for all instances exist
  correctly.

  
  ## Stacktrace

  2025-01-16T06:39:41.756 10 ERROR nova.api.openstack.wsgi [F] [None req-0605cf7e-09db-4ba1-9914-68d34d935587 9d5b1aa120675648abcb2cb156f8020b 792bb91fb3a254b4b5cbf61bed57854e - - default default] Unexpected exception in API method: KeyError: '5d9070aa-33da-46bc-94bc-604746ecfbd2'
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-] Traceback (most recent call last):
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/wsgi.py", line 665, in wrapped
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return f(*args, **kwargs)
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/validation/__init__.py", line 195, in wrapper
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     return func(*args, **kwargs)
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   [Previous line repeated 2 more times]
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/servers.py", line 146, in detail
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     servers = self._get_servers(req, is_detail=True)
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/servers.py", line 360, in _get_servers
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     response = self._view_builder.detail(
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 475, in detail
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     servers_dict = self._list_view(self.show, request, instances,
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 529, in _list_view
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     server_list = [func(request, server,
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]   File "/opt/nova/lib64/python3.9/site-packages/nova/api/openstack/compute/views/servers.py", line 535, in <listcomp>
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-]     provided_az=req_specs_dict[server.uuid])["server"]
  2025-01-16T06:39:41.756 10 EXCEPTION nova.api.openstack.wsgi [P] [-] KeyError: '5d9070aa-33da-46bc-94bc-604746ecfbd2'

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