maintenance/deleteImageMemcached.php

   1 <?php
   2 // php deleteImageMemcached.php --until "2005-09-05 00:00:00" --sleep 0 --report 10
   3 /**
   4  * @file
   5  * @ingroup Maintenance
   6  */
   7
   8 $optionsWithArgs = array( 'until', 'sleep', 'report' );
   9
  10 require_once 'commandLine.inc';
  11
  12 /**
  13  * @ingroup Maintenance
  14  */
  15 class DeleteImageCache {
  16         var $until, $sleep, $report;
  17
  18         function DeleteImageCache( $until, $sleep, $report ) {
  19                 $this->until = $until;
  20                 $this->sleep = $sleep;
  21                 $this->report = $report;
  22         }
  23
  24         function main() {
  25                 global $wgMemc;
  26                 $fname = 'DeleteImageCache::main';
  27
  28                 ini_set( 'display_errors', false );
  29
  30                 $dbr = wfGetDB( DB_SLAVE );
  31
  32                 $res = $dbr->select( 'image',
  33                         array( 'img_name' ),
  34                         array( "img_timestamp < {$this->until}" ),
  35                         $fname
  36                 );
  37
  38                 $i = 0;
  39                 $total = $this->getImageCount();
  40
  41                 while ( $row = $dbr->fetchObject( $res ) ) {
  42                         if ($i % $this->report == 0)
  43                                 printf("%s: %13s done (%s)\n", wfWikiID(), "$i/$total", wfPercent( $i / $total * 100 ));
  44                         $md5 = md5( $row->img_name );
  45                         $wgMemc->delete( wfMemcKey( 'Image', $md5 ) );
  46
  47                         if ($this->sleep != 0)
  48                                 usleep( $this->sleep );
  49
  50                         ++$i;
  51                 }
  52         }
  53
  54         function getImageCount() {
  55                 $fname = 'DeleteImageCache::getImageCount';
  56
  57                 $dbr = wfGetDB( DB_SLAVE );
  58                 return $dbr->selectField( 'image', 'COUNT(*)', array(), $fname );
  59         }
  60 }
  61
  62 $until = preg_replace( "/[^\d]/", '', $options['until'] );
  63 $sleep = (int)$options['sleep'] * 1000; // milliseconds
  64 $report = (int)$options['report'];
  65
  66 $dic = new DeleteImageCache( $until, $sleep, $report );
  67 $dic->main();
  68