def action_peek_json(body):
"""Determine action to invoke."""
try:
decoded = jsonutils.loads(body)
except ValueError:
msg = _("cannot understand JSON")
raise exception.MalformedRequestBody(reason=msg)
# Make sure there's exactly one key...
if len(decoded) != 1:
msg = _("too many body keys")
raise exception.MalformedRequestBody(reason=msg)
# Return the action and the decoded body...
return decoded.keys()[0]
def default(self, string):
"""Deserialize an xml-formatted cell create request."""
try:
node = minidom.parseString(string)
except expat.ExpatError:
msg = _("cannot understand XML")
raise exception.MalformedRequestBody(reason=msg)
return {'body': {'cell': self._extract_cell(node)}}
def _from_xml(self, datastring):
plurals = set(self.metadata.get('plurals', {}))
try:
node = minidom.parseString(datastring).childNodes[0]
return {node.nodeName: self._from_xml_node(node, plurals)}
except expat.ExpatError:
msg = _("cannot understand XML")
raise exception.MalformedRequestBody(reason=msg)
def safe_minidom_parse_string(xml_string):
"""Parse an XML string using minidom safely."""
try:
return minidom.parseString(xml_string, parser=ProtectedExpatParser())
except (sax.SAXParseException, ValueError,
expat.ExpatError, LookupError) as e:
#NOTE(Vijaya Erukala): XML input such as
# <?xml version="1.0" encoding="TF-8"?>
# raises LookupError: unknown encoding: TF-8
raise exception.MalformedRequestBody(reason=str(e))
def action_peek(body):
"""Determine action to invoke.
This looks inside the json body and fetches out the action method
name.
"""
try:
decoded = jsonutils.loads(body)
except ValueError:
msg = _("cannot understand JSON")
raise exception.MalformedRequestBody(reason=msg)
# Make sure there's exactly one key...
if len(decoded) != 1:
msg = _("too many body keys")
raise exception.MalformedRequestBody(reason=msg)
# Return the action name
return list(decoded.keys())[0]
def default(self, string):
try:
node = minidom.parseString(string)
except expat.ExpatError:
msg = _("cannot understand XML")
raise exception.MalformedRequestBody(reason=msg)
updates = {}
for child in node.childNodes[0].childNodes:
updates[child.tagName] = self.extract_text(child)
return dict(body=updates)
def default(self, string):
try:
node = minidom.parseString(string)
except expat.ExpatError:
msg = _("cannot understand XML")
raise exception.MalformedRequestBody(reason=msg)
updates = {}
updates_node = self.find_first_child_named(node, 'updates')
if updates_node is not None:
maintenance = self.find_first_child_named(updates_node,
'maintenance_mode')
if maintenance is not None:
updates[maintenance.tagName] = self.extract_text(maintenance)
status = self.find_first_child_named(updates_node, 'status')
if status is not None:
updates[status.tagName] = self.extract_text(status)
return dict(body=updates)
def _from_json(self, datastring):
try:
return jsonutils.loads(datastring)
except ValueError:
msg = _("cannot understand JSON")
raise exception.MalformedRequestBody(reason=msg)
