maintenance/purgeParserCache.php

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