maintenance/getLagTimes.php

   1 <?php
   2 /**
   3  * Display replication lag times.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once __DIR__ . '/Maintenance.php';
  25
  26 /**
  27  * Maintenance script that displays replication lag times.
  28  *
  29  * @ingroup Maintenance
  30  */
  31 class GetLagTimes extends Maintenance {
  32         public function __construct() {
  33                 parent::__construct();
  34                 $this->mDescription = "Dump replication lag times";
  35         }
  36
  37         public function execute() {
  38                 $lb = wfGetLB();
  39
  40                 if ( $lb->getServerCount() == 1 ) {
  41                         $this->error( "This script dumps replication lag times, but you don't seem to have\n"
  42                                 . "a multi-host db server configuration." );
  43                 } else {
  44                         $lags = $lb->getLagTimes();
  45                         foreach ( $lags as $n => $lag ) {
  46                                 $host = $lb->getServerName( $n );
  47                                 if ( IP::isValid( $host ) ) {
  48                                         $ip = $host;
  49                                         $host = gethostbyaddr( $host );
  50                                 } else {
  51                                         $ip = gethostbyname( $host );
  52                                 }
  53                                 $starLen = min( intval( $lag ), 40 );
  54                                 $stars = str_repeat( '*', $starLen );
  55                                 $this->output( sprintf( "%10s %20s %3d %s\n", $ip, $host, $lag, $stars ) );
  56                         }
  57                 }
  58         }
  59 }
  60
  61 $maintClass = "GetLagTimes";
  62 require_once RUN_MAINTENANCE_IF_MAIN;