code: def retry_failure(self, tenant_id, tenant_name, fw_data, is_fw_virt,
                        result):
          
          try:
              with self.mutex_lock:
                  ret = self.retry_failure_internal(tenant_id, tenant_name,
                                                    fw_data, is_fw_virt, result)
          except Exception as exc:
              LOG.error("Exception raised in create fabric %s", str(exc))
              return False
          return ret
docs: Top level retry failure routine.