maintenance/deleteImageMemcached.php

   1 <?php
   2 // php deleteImageMemcached.php --until "2003-09-04 04:40:00" --wait 500
   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, $wgDBname;
  18                 $fname = 'DeleteImageCache::main';
  19
  20                 $dbr =& wfGetDB( DB_SLAVE );
  21
  22                 $res = $dbr->select( 'image',
  23                         array( 'img_name' ),
  24                         array( "img_timestamp < {$this->until}" ),
  25                         $fname
  26                 );
  27
  28                 $i = 0;
  29                 $total = $this->getImageCount();
  30
  31                 while ( $row = $dbr->fetchObject( $res ) ) {
  32                         if ($i % $this->report == 0)
  33                                 printf("%s: %13s done (%s)\n", $wgDBname, "$i/$total", wfPercent( $i / $total * 100 ));
  34                         $md5 = md5( $row->img_name );
  35                         $wgMemc->delete( "$wgDBname:Image:$md5" );
  36
  37                         if ($this->sleep != 0)
  38                                 usleep( $this->sleep );
  39
  40                         ++$i;
  41                 }
  42         }
  43
  44         function getImageCount() {
  45                 $fname = 'DeleteImageCache::getImageCount';
  46
  47                 $dbr =& wfGetDB( DB_SLAVE );
  48                 return $dbr->selectField( 'image', 'COUNT(*)', array(), $fname );
  49         }
  50 }
  51
  52 $until = preg_replace( "/[^\d]/", '', $options['until'] );
  53 $sleep = (int)$options['sleep'] * 1000; // milliseconds
  54 $report = (int)$options['report'];
  55
  56 $dic = new DeleteImageCache( $until, $sleep, $report );
  57 $dic->main();