maintenance/purgeParserCache.php

   1 <?php
   2 /**
   3  * @ingroup Maintenance
   4  * @file
   5  */
   6
   7 require( dirname( __FILE__ ) . '/Maintenance.php' );
   8
   9 class PurgeParserCache extends Maintenance {
  10         var $lastProgress;
  11
  12         function __construct() {
  13                 parent::__construct();
  14                 $this->addDescription( "Remove old objects from the parser cache. " .
  15                         "This only works when the parser cache is in an SQL database." );
  16                 $this->addOption( 'expiredate', 'Delete objects expiring before this date.', false, true );
  17                 $this->addOption( 'age',
  18                         'Delete objects created more than this many seconds ago, assuming $wgParserCacheExpireTime '.
  19                                 'has been consistent.',
  20                         false, true );
  21         }
  22
  23         function execute() {
  24                 $inputDate = $this->getOption( 'expiredate' );
  25                 $inputAge = $this->getOption( 'age' );
  26                 if ( $inputDate !== null ) {
  27                         $date = wfTimestamp( TS_MW, strtotime( $inputDate ) );
  28                 } elseif ( $inputAge !== null ) {
  29                         global $wgParserCacheExpireTime;
  30                         $date = wfTimestamp( TS_MW, time() + $wgParserCacheExpireTime - intval( $inputAge ) );
  31                 } else {
  32                         echo "Must specify either --expiredate or --age\n";
  33                         exit( 1 );
  34                 }
  35
  36                 $english = Language::factory( 'en' );
  37                 echo "Deleting objects expiring before " . $english->timeanddate( $date ) . "\n";
  38
  39                 $pc = wfGetParserCacheStorage();
  40                 $success = $pc->deleteObjectsExpiringBefore( $date, array( $this, 'showProgress' ) );
  41                 if ( !$success ) {
  42                         echo "\nCannot purge this kind of parser cache.\n";
  43                         exit( 1 );
  44                 }
  45                 $this->showProgress( 100 );
  46                 echo "\nDone\n";
  47         }
  48
  49         function showProgress( $percent ) {
  50                 $percentString = sprintf( "%.2f", $percent );
  51                 if ( $percentString === $this->lastProgress ) {
  52                         return;
  53                 }
  54                 $this->lastProgress = $percentString;
  55
  56                 $stars = floor( $percent / 2 );
  57                 echo '[' . str_repeat( '*', $stars ), str_repeat( '.', 50 - $stars ) . '] ' .
  58                         "$percentString%\r";
  59
  60         }
  61 }
  62 $maintClass = 'PurgeParserCache';
  63 require_once( RUN_MAINTENANCE_IF_MAIN );