maintenance/rebuildFileCache.php

   1 <?php
   2 /**
   3  * Build file cache for content pages
   4  *
   5  * @file
   6  * @ingroup Maintenance
   7  */
   8
   9 /** */
  10 require_once( "commandLine.inc" );
  11 if( !$wgUseFileCache ) {
  12         echo "Nothing to do -- \$wgUseFileCache is disabled.\n";
  13         exit(0);
  14 }
  15 $wgDisableCounters = false; // no real hits here
  16
  17 $start = isset($args[0]) ? intval($args[0]) : 0;
  18 $overwrite = isset( $args[1] ) && $args[1] === 'overwrite';
  19 echo "Building content page file cache from page {$start}!\n";
  20 echo "Format: <start> [overwrite]\n";
  21
  22 $dbr = wfGetDB( DB_SLAVE );
  23 $start = $start > 0 ? $start : $dbr->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
  24 $end = $dbr->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
  25 if( !$start ) {
  26         die("Nothing to do.\n");
  27 }
  28
  29 $_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip'; // hack, no real client
  30 OutputPage::setEncodings(); # Not really used yet
  31
  32 $BATCH_SIZE = 100;
  33 # Do remaining chunk
  34 $end += $BATCH_SIZE - 1;
  35 $blockStart = $start;
  36 $blockEnd = $start + $BATCH_SIZE - 1;
  37
  38 // Go through each page and save the output
  39 while( $blockEnd <= $end ) {
  40         // Get the pages
  41         $res = $dbr->select( 'page', array('page_namespace','page_title','page_id'),
  42                 array('page_namespace' => $wgContentNamespaces,
  43                         "page_id BETWEEN $blockStart AND $blockEnd" ),
  44                 array('ORDER BY' => 'page_id ASC','USE INDEX' => 'PRIMARY')
  45         );
  46         while( $row = $dbr->fetchObject( $res ) ) {
  47                 $rebuilt = false;
  48                 $wgTitle = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
  49                 if( null == $wgTitle ) {
  50                         echo "Page {$row->page_id} bad title\n";
  51                         continue; // broken title?
  52                 }
  53                 $wgArticle = new Article( $wgTitle );
  54                 // If the article is cacheable, then load it
  55                 if( $wgArticle->isFileCacheable() ) {
  56                         $cache = new HTMLFileCache( $wgTitle );
  57                         if( $cache->isFileCacheGood() ) {
  58                                 if( $overwrite ) {
  59                                         $rebuilt = true;
  60                                 } else {
  61                                         echo "Page {$row->page_id} already cached\n";
  62                                         continue; // done already!
  63                                 }
  64                         } else {
  65                                 echo "Page {$row->page_id} not cached\n";
  66                         }
  67                         ob_start( array(&$cache, 'saveToFileCache' ) ); // save on ob_end_clean()
  68                         $wgUseFileCache = false; // hack, we don't want $wgArticle fiddling with filecache
  69                         $wgArticle->view();
  70                         @$wgOut->output(); // header notices
  71                         $wgUseFileCache = true;
  72                         ob_end_clean(); // clear buffer
  73                         $wgOut = new OutputPage(); // empty out any output page garbage
  74                         if( $rebuilt )
  75                                 echo "Re-cached page {$row->page_id}\n";
  76                         else
  77                                 echo "Cached page {$row->page_id}\n";
  78                 } else {
  79                         echo "Page {$row->page_id} not cacheable\n";
  80                 }
  81         }
  82         $blockStart += $BATCH_SIZE;
  83         $blockEnd += $BATCH_SIZE;
  84         wfWaitForSlaves( 5 );
  85 }
  86 echo "Done!\n";
  87
  88 // Remove these to be safe
  89 if( isset($wgTitle) )
  90         unset($wgTitle);
  91 if( isset($wgArticle) )
  92         unset($wgArticle);