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