def test_json(self):
input_dict = dict(servers=dict(a=(2, 3)))
expected_json = '{"servers":{"a":[2,3]}}'
serializer = wsgi.JSONDictSerializer()
result = serializer.serialize(input_dict)
result = result.replace('\n', '').replace(' ', '')
self.assertEqual(result, expected_json)
def test_json_with_unicode(self):
input_dict = dict(servers=dict(a=(2, u'\u7f51\u7edc')))
expected_json = '{"servers":{"a":[2,"\\u7f51\\u7edc"]}}'
serializer = wsgi.JSONDictSerializer()
result = serializer.serialize(input_dict)
result = result.replace('\n', '').replace(' ', '')
self.assertEqual(result, expected_json)
def create_resource(version, controller_dict):
"""
Generic function for creating a wsgi resource
The function takes as input:
- desired version
- controller and metadata dictionary
e.g.: {'1.0': [ctrl_v10, meta_v10, xml_ns],
'1.1': [ctrl_v11, meta_v11, xml_ns]}
"""
# the first element of the iterable is expected to be the controller
controller = controller_dict[version][0]
# the second element should be the metadata
metadata = controller_dict[version][1]
# and the third element the xml namespace
xmlns = controller_dict[version][2]
# and also the function for building the fault body
fault_body_function = faults.fault_body_function(version)
headers_serializers = {
'1.0': HeaderSerializer10(),
'1.1': HeaderSerializer11()
}
xml_serializer = wsgi.XMLDictSerializer(metadata, xmlns)
json_serializer = wsgi.JSONDictSerializer()
xml_deserializer = wsgi.XMLDeserializer(metadata)
json_deserializer = wsgi.JSONDeserializer()
body_serializers = {
'application/xml': xml_serializer,
'application/json': json_serializer,
}
body_deserializers = {
'application/xml': xml_deserializer,
'application/json': json_deserializer,
}
serializer = wsgi.ResponseSerializer(body_serializers,
headers_serializers[version])
deserializer = wsgi.RequestDeserializer(body_deserializers)
return wsgi.Resource(controller,
fault_body_function,
deserializer,
serializer)
def Resource(controller, faults=None, deserializers=None, serializers=None):
"""Represents an API entity resource and the associated serialization and
deserialization logic
"""
xml_deserializer = wsgi.XMLDeserializer(attributes.get_attr_metadata())
default_deserializers = {'application/xml': xml_deserializer,
'application/json': wsgi.JSONDeserializer()}
xml_serializer = wsgi.XMLDictSerializer(attributes.get_attr_metadata())
default_serializers = {'application/xml': xml_serializer,
'application/json': wsgi.JSONDictSerializer()}
format_types = {'xml': 'application/xml',
'json': 'application/json'}
action_status = dict(create=201, delete=204)
default_deserializers.update(deserializers or {})
default_serializers.update(serializers or {})
deserializers = default_deserializers
serializers = default_serializers
faults = faults or {}
@webob.dec.wsgify(RequestClass=Request)
def resource(request):
route_args = request.environ.get('wsgiorg.routing_args')
if route_args:
args = route_args[1].copy()
else:
args = {}
# NOTE(jkoelker) by now the controller is already found, remove
# it from the args if it is in the matchdict
args.pop('controller', None)
fmt = args.pop('format', None)
action = args.pop('action', None)
content_type = format_types.get(fmt,
request.best_match_content_type())
deserializer = deserializers.get(content_type)
serializer = serializers.get(content_type)
try:
if request.body:
args['body'] = deserializer.deserialize(request.body)['body']
method = getattr(controller, action)
result = method(request=request, **args)
except (exceptions.QuantumException,
netaddr.AddrFormatError) as e:
LOG.exception(_('%s failed'), action)
body = serializer.serialize({'QuantumError': e})
kwargs = {'body': body, 'content_type': content_type}
for fault in faults:
if isinstance(e, fault):
raise faults[fault](**kwargs)
raise webob.exc.HTTPInternalServerError(**kwargs)
except webob.exc.HTTPException as e:
LOG.exception(_('%s failed'), action)
e.body = serializer.serialize({'QuantumError': e})
e.content_type = content_type
raise
except Exception as e:
# NOTE(jkoelker) Everyting else is 500
LOG.exception(_('%s failed'), action)
# Do not expose details of 500 error to clients.
msg = _('Request Failed: internal server error while '
'processing your request.')
body = serializer.serialize({'QuantumError': msg})
kwargs = {'body': body, 'content_type': content_type}
raise webob.exc.HTTPInternalServerError(**kwargs)
status = action_status.get(action, 200)
body = serializer.serialize(result)
# NOTE(jkoelker) Comply with RFC2616 section 9.7
if status == 204:
content_type = ''
body = None
return webob.Response(request=request, status=status,
content_type=content_type,
body=body)
return resource
