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 _from_json(self, datastring):
try:
return jsonutils.loads(datastring)
except ValueError:
msg = _("cannot understand JSON")
raise exception.MalformedRequestBody(reason=msg)