def process_request(self, request):
# Abort early if we don't have any work to do
params_json = request.body
if not params_json:
return
# Reject unrecognized content types. Empty string indicates
# the client did not explicitly set the header
if request.content_type not in ('application/json', '', 'plain/text'):
e = exception.ValidationError(attribute='application/json',
target='Content-Type header')
return render_exception(e, request=request)
params_parsed = {}
try:
params_parsed = jsonutils.loads(params_json)
except ValueError as ee:
e = exception.ValidationError(attribute='valid JSON',
target='request body')
return render_exception(e, request=request)
finally:
if not params_parsed:
params_parsed = {}
params = {}
for k, v in six.iteritems(params_parsed):
if k in ('self', 'context'):
continue
if k.startswith('_'):
continue
params[k] = v
request.environ[PARAMS_ENV] = params
def _require_attribute(self, ref, attribute):
"""Ensures the reference contains the specified attribute.
Raise a ValidationError if the given attribute is not present
"""
if self._attribute_is_empty(ref, attribute):
msg = _('%s field is required and cannot be empty') % attribute
raise exception.ValidationError(message=msg)
def _require_attributes(self, ref, attrs):
"""Ensures the reference contains the specified attributes.
Raise a ValidationError if any of the given attributes is not present
"""
missing_attrs = [attribute for attribute in attrs
if self._attribute_is_empty(ref, attribute)]
if missing_attrs:
msg = _('%s field(s) cannot be empty') % ', '.join(missing_attrs)
raise exception.ValidationError(message=msg)