/**
     * Effettua il dump di un database, da inviare alle board
     * @param String $db_name può essere MASTER o l'id dell'impianto di cui fare il dump
     * @return void
     */
    public static function dumper( $db_name, $usecreatetable = false, $usetruncatetable = true, $deletedbdefaultcolumn = false ) {

        $version = self::getNextVersion($db_name);

        if (!is_dir(self::$settings['PATH_BASE'] . '/dump')) {
            mkdir(self::$settings['PATH_BASE'] . '/dump');
        }

        $DUMPfilename = self::$settings['PATH_BASE'] . 'dump/config_' . $version . '.sql';
        $BZfilename = self::$settings['PATH_BASE'] . "dump/config_" . $version . ".bz2";


        if ($db_name == 'MASTER') {

            $dump = new MySQLDump(self::$settings['DB_NAME'], self::$settings['DB_USER'], self::$settings['DB_PASS'], self::$settings['DB_HOST'], self::$settings['DB_PORT']);
            $dump->start( $DUMPfilename, self::getTablesToDump( self::$settings['DB_MASTER_TABLES'] ), $usecreatetable, $usetruncatetable, $deletedbdefaultcolumn );

        } else {

            $PlantController = new PlantController();
            $res = $PlantController->getByID($db_name);

            // TODO CONTROLLARE L'ESISTENZA DELL'IMPIANTO

            $db_params = self::checkPlantDBConnectionParams($db_name, $res->DBLocation, $res->DBPort, $res->DBUser, $res->DBPwd);
            $db_name = $db_params['dbname'];

            //echo json_encode($db_params['dbname'] . " " . $db_params['user'] . " " . $db_params['pass'] . " " . $db_params['host'] .":". $db_params['port']);

            $dump = new MySQLDump($db_params['dbname'], $db_params['user'], $db_params['pass'], $db_params['host'], $db_params['port']);
            $dump->start( $DUMPfilename , self::getTablesToDump( self::$settings['DB_PLANT_TABLES'] ), $usecreatetable, $usetruncatetable, $deletedbdefaultcolumn);
        }

        $file_pointer = fopen($DUMPfilename, 'r');
        $file_read = fread($file_pointer, filesize($DUMPfilename));
        fclose($file_pointer);

        $bz = bzopen($BZfilename, 'w');
        bzwrite($bz, $file_read);
        bzclose($bz);

        unlink($DUMPfilename);


        // Da testare una volta messo sul server
        if ($db_name == 'MASTER'){
            $destination = "/var/esapro/update/";
        } else {
            $destination = "/var/esapro/config/" . $db_name . "/";
        }
        rename ($BZfilename, $destination . "config_" . $version . ".bz2");
    }