DBFarmRole::isOpenstack PHP Метод

    public function isOpenstack()
    {
        return PlatformFactory::isOpenstack($this->Platform);
    }

 public function getVolumeConfig(DBFarmRole $dbFarmRole, DBServer $dbServer)
 {
     try {
         $volume = Scalr_Storage_Volume::init()->loadByFarmRoleServer($dbFarmRole->ID, $dbServer->index, $this->behavior);
         $volumeConfig = $volume->getConfig();
     } catch (Exception $e) {
     }
     if (!$volumeConfig) {
         $volumeConfig = new stdClass();
         $volumeConfig->type = $dbFarmRole->GetSetting(static::ROLE_DATA_STORAGE_ENGINE);
         switch ($volumeConfig->type) {
             case MYSQL_STORAGE_ENGINE::EPH:
                 if ($dbFarmRole->Platform == SERVER_PLATFORMS::RACKSPACE) {
                     $storageProvider = 'cf';
                     $volumeConfig->disk = new stdClass();
                     $volumeConfig->disk->type = 'loop';
                     $volumeConfig->disk->size = '75%root';
                 } elseif ($dbFarmRole->isOpenstack()) {
                     $storageProvider = 'swift';
                     $volumeConfig->disk = new stdClass();
                     $volumeConfig->disk->type = 'loop';
                     $volumeConfig->disk->size = '75%root';
                 } elseif ($dbFarmRole->Platform == SERVER_PLATFORMS::GCE) {
                     $storageProvider = 'gcs';
                     $volumeConfig->disk = array('type' => 'gce_ephemeral', 'name' => 'ephemeral-disk-0');
                     $volumeConfig->size = "80%";
                 } elseif ($dbFarmRole->Platform == SERVER_PLATFORMS::EC2) {
                     /*
                      * NOT SUPPORTED
                     $storageProvider = 's3';
                     
                     $volumeConfig->disk = $this->dbFarmRole->GetSetting(Scalr_Db_Msr::DATA_STORAGE_EPH_DISK);
                     $volumeConfig->size = "80%";
                     */
                 }
                 $volumeConfig->snap_backend = sprintf("%s://scalr-%s-%s/data-bundles/%s/%s", $storageProvider, $dbFarmRole->GetFarmObject()->EnvID, $dbFarmRole->CloudLocation, $dbFarmRole->FarmID, $this->behavior);
                 $volumeConfig->vg = $this->behavior;
                 break;
             default:
                 $volumeConfig->size = $dbFarmRole->GetSetting(static::ROLE_DATA_STORAGE_EBS_SIZE);
                 break;
         }
     }
     return $volumeConfig;
 }