public function getLog()
    {
        if (!isset($this->_log)) {
            $this->_log = new DataInterfaceLog();
            if (!empty($this->interface)) {
                $this->_log->data_interface_id = $this->interface->interfaceObject->id;
            }
            $this->_log->status = 'running';
            $this->_log->started = date("Y-m-d G:i:s");
            $this->_log->peak_memory = memory_get_usage();
        }

        return $this->_log;
    }