maintenance/purgeNamespace.php

   1 <?php
   2 /**
   3  * Purge squids pages for a given namespace
   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  * @ingroup Maintenance
  21  */
  22
  23 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  24
  25 # TODO implements a page_touched condition
  26
  27 class PurgeNamespace extends Maintenance {
  28         public function __construct() {
  29                 $this->mDescription = "Purge squids pages for a given namespace";
  30                 $this->addOption( "namespace", "Namespace number", true, true );
  31                 $this->setBatchSize( 100 );
  32                 parent::__construct();
  33         }
  34
  35         public function execute() {
  36                 $dbr = wfGetDB( DB_SLAVE );
  37                 $ns = $dbr->addQuotes( $this->getOption( 'namespace') );
  38
  39                 $result = $dbr->select(
  40                         array( 'page' ),
  41                         array( 'page_namespace', 'page_title' ),
  42                         array( "page_namespace = $ns" ),
  43                         __METHOD__,
  44                         array( 'ORDER BY' => 'page_id' )
  45                 );
  46
  47                 $start   = 0;
  48                 $end = $dbr->numRows( $result );
  49                 $this->output( "Will purge $end pages from namespace $ns\n" );
  50
  51                 # Do remaining chunk
  52                 $end += $this->mBatchSize - 1;
  53                 $blockStart = $start;
  54                 $blockEnd = $start + $this->mBatchSize - 1;
  55
  56                 while( $blockEnd <= $end ) {
  57                         # Select pages we will purge:
  58                         $result = $dbr->select(
  59                                 array( 'page' ),
  60                                 array( 'page_namespace', 'page_title' ),
  61                                 array( "page_namespace = $ns" ),
  62                                 __METHOD__,
  63                                 array( # conditions
  64                                         'ORDER BY' => 'page_id',
  65                                         'LIMIT'    => $this->mBatchSize,
  66                                         'OFFSET'   => $blockStart,
  67                                  )
  68                         );
  69
  70                         # Initialize/reset URLs to be purged
  71                         $urls = array();
  72                         foreach( $result as $row ) {
  73                                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
  74                                 $url = $title->getFullUrl();
  75                                 $urls[] = $url;
  76                         }
  77
  78                         $this->sendPurgeRequest( $urls );
  79
  80                         $blockStart += $this->mBatchSize;
  81                         $blockEnd   += $this->mBatchSize;
  82                 }
  83
  84                 $this->output( "Done!\n" );
  85         }
  86
  87         private function sendPurgeRequest( $urls ) {
  88                 $this->output( "Purging " . count( $urls ). " urls\n" );
  89                 $u = new SquidUpdate( $urls );
  90                 $u->doUpdate();
  91         }
  92 }
  93
  94 $maintClass = "PurgeNamespace";
  95 require_once( RUN_MAINTENANCE_IF_MAIN );
  96