maintenance/deleteImageMemcached.php

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