Scalr_Scaling_FarmRoleMetric::getSetting PHP Method

    public function getSetting($name)
    {
        return $this->settings[$name];
    }

 public function getValue(DBFarmRole $dbFarmRole, Scalr_Scaling_FarmRoleMetric $farmRoleMetric)
 {
     $servers = $dbFarmRole->GetServersByFilter(array('status' => SERVER_STATUS::RUNNING));
     $DBFarm = $dbFarmRole->GetFarmObject();
     if (count($servers) == 0) {
         return 0;
     }
     $roleBWRaw = array();
     $retval = array();
     foreach ($servers as $DBServer) {
         $type = $farmRoleMetric->getSetting(self::SETTING_BW_TYPE) == 'inbound' ? 'receive' : 'transmit';
         $netStat = (array) $DBServer->scalarizr->system->netStat();
         foreach ($netStat as $interface => $usage) {
             if ($interface != 'lo') {
                 break;
             }
         }
         if ($usage) {
             array_push($roleBWRaw, round($usage->{$type}->bytes / 1024 / 1024, 2));
         }
     }
     $roleBW = round(array_sum($roleBWRaw) / count($roleBWRaw), 2);
     if ($farmRoleMetric->getSetting(self::SETTING_BW_LAST_VALUE_RAW) !== null && $farmRoleMetric->getSetting(self::SETTING_BW_LAST_VALUE_RAW) !== '') {
         $time = time() - $farmRoleMetric->dtLastPolled;
         $bandwidthUsage = ($roleBW - (double) $farmRoleMetric->getSetting(self::SETTING_BW_LAST_VALUE_RAW)) * 8;
         $bandwidthChannelUsage = $bandwidthUsage / $time;
         // in Mbits/sec
         $retval = round($bandwidthChannelUsage, 2);
     } else {
         $retval = 0;
     }
     $farmRoleMetric->setSetting(self::SETTING_BW_LAST_VALUE_RAW, $roleBW);
     return array($retval);
 }