** Changed in: nova
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1223358
Title:
XML serialization fails when it's trying to serialize an empty
selector
Status in OpenStack Compute (Nova):
Fix Released
Bug description:
The XML serilaziation is failing when it's trying to create a datum selector
with no values.
It's possible to use devstack to reproduce this issue following these steps:
- boot an instance from volume without specifying an image id:
nova boot --flavor 1 --block-device-mapping vda=<VOL_ID> inst1
- perform a GET servers for the instance created in the previous step
requiring the results in XML:
curl -i http://10.0.0.5:8774/v2/<Tenant_id>/servers/<inst1_uuid> -X GET
-H "X-Auth-Project-Id: admin" -H "Accept: application/xml" -H "X-Auth-Token:
<TOKEN>"
The response is a 500 error:
HTTP/1.1 500 Internal Server Error
Content-Length: 192
Content-Type: application/xml; charset=UTF-8
X-Compute-Request-Id: req-5f69cdc2-7b10-4832-89e6-9500601d3ec7
Date: Tue, 10 Sep 2013 13:43:30 GMT
<computeFault code="500"
xmlns="http://docs.openstack.org/compute/api/v1.1";><message>The server
has either erred or is incapable of performing the requested
operation.</message></computeFault>
And in the compute log you can find details of the exception:
2013-09-10 13:43:30.729 ERROR nova.api.openstack
[req-5f69cdc2-7b10-4832-89e6-9500601d3ec7 admin admin] Caught error: string
indices must be integers, not str
2013-09-10 13:43:30.729 TRACE nova.api.openstack Traceback (most recent call
last):
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/__init__.py", line 111, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return
req.get_response(self.application)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/request.py", line 1296, in send
2013-09-10 13:43:30.729 TRACE nova.api.openstack application,
catch_exc_info=False)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/request.py", line 1260, in
call_application
2013-09-10 13:43:30.729 TRACE nova.api.openstack app_iter =
application(self.environ, start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return resp(environ,
start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/python-keystoneclient/keystoneclient/middleware/auth_token.py",
line 534, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return self.app(env,
start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return resp(environ,
start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return resp(environ,
start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/lib/python2.7/dist-packages/routes/middleware.py", line 131, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack response =
self.app(environ, start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack return resp(environ,
start_response)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack resp =
self.call_func(req, *args, **self.kwargs)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2013-09-10 13:43:30.729 TRACE nova.api.openstack return self.func(req,
*args, **kwargs)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/wsgi.py", line 904, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack content_type, body,
accept)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/wsgi.py", line 993, in _process_stack
2013-09-10 13:43:30.729 TRACE nova.api.openstack self.default_serializers)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/wsgi.py", line 604, in serialize
2013-09-10 13:43:30.729 TRACE nova.api.openstack response.body =
serializer.serialize(self.obj)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 591, in serialize
2013-09-10 13:43:30.729 TRACE nova.api.openstack elem =
self.make_tree(obj)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 619, in make_tree
2013-09-10 13:43:30.729 TRACE nova.api.openstack return
self._serialize(None, obj, siblings, nsmap)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 574, in _serialize
2013-09-10 13:43:30.729 TRACE nova.api.openstack self._serialize(elem,
datum, nieces)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 555, in _serialize
2013-09-10 13:43:30.729 TRACE nova.api.openstack elems =
siblings[0].render(parent, obj, siblings[1:], nsmap)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 427, in render
2013-09-10 13:43:30.729 TRACE nova.api.openstack
elems.append((self._render(parent, datum, patches, nsmap), datum))
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 381, in _render
2013-09-10 13:43:30.729 TRACE nova.api.openstack self.apply(elem, datum)
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 346, in apply
2013-09-10 13:43:30.729 TRACE nova.api.openstack elem.set(key,
unicode(value(obj, True)))
2013-09-10 13:43:30.729 TRACE nova.api.openstack File
"/opt/stack/nova/nova/api/openstack/xmlutil.py", line 85, in __call__
2013-09-10 13:43:30.729 TRACE nova.api.openstack obj = obj[elem]
2013-09-10 13:43:30.729 TRACE nova.api.openstack TypeError: string indices
must be integers, not str
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