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