def _handle_doc(self, url, message, update_map):
'''
returns is_valid_doc, changed_doc, error_message, update_map may be changed accordingly.
'''
#now = datetime2timestamp(datetime.datetime.utcnow())
success, error_message = doc_validator.validate(url, message["doc"], message["headers"])
if not success:
return False, None, error_message
#decoument decoding
decoded_doc, used_encoding = self._decode_doc(url, message)
if decoded_doc is None:
return False, None, "doc_can't be decoded"
return True, decoded_doc, None
