includes/ParserCache.php

   1 <?php
   2
   3 class ParserCache
   4 {
   5         function getKey( &$article, &$user ) {
   6                 global $wgDBname;
   7                 $hash = $user->getPageRenderingHash();
   8                 $pageid = intval( $article->getID() );
   9                 $key = "$wgDBname:pcache:idhash:$pageid-$hash";
  10                 return $key;
  11         }
  12
  13         function get( &$article, &$user ) {
  14                 global $wgMemc;
  15                 $fname = "ParserCache::get";
  16                 wfProfileIn( $fname );
  17
  18                 $hash = $user->getPageRenderingHash();
  19                 $pageid = intval( $article->getID() );
  20                 $key = $this->getKey( $article, $user );
  21                 $value = $wgMemc->get( $key );
  22                 if ( $value ) {
  23                         # Delete if article has changed since the cache was made
  24                         if ( $value->getTouched() != $article->getTouched() ) {
  25                                 $wgMemc->delete( $key );
  26                                 $value = false;
  27                         }
  28                 } else {
  29                         $value = false;
  30                 }
  31
  32                 wfProfileOut( $fname );
  33                 return $value;
  34         }
  35
  36         function save( $parserOutput, &$article, &$user ){
  37                 global $wgMemc;
  38                 $key = $this->getKey( $article, $user );
  39                 $parserOutput->setTouched( $article->getTouched() );
  40                 if( $parserOutput->containsOldMagic() ){
  41                         $expire = 3600; # 1 hour
  42                 } else {
  43                         $expire = 7*86400; # 7 days
  44                 }
  45
  46                 $wgMemc->set( $key, $parserOutput, $expire );
  47         }
  48
  49 }
  50
  51
  52 ?>