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 $dbw = wfGetDB( DB_MASTER );
  39 // Go through each page and save the output
  40 while( $blockEnd <= $end ) {
  41         // Get the pages
  42         $res = $dbr->select( 'page', array('page_namespace','page_title','page_id'),
  43                 array('page_namespace' => $wgContentNamespaces,
  44                         "page_id BETWEEN $blockStart AND $blockEnd" ),
  45                 array('ORDER BY' => 'page_id ASC','USE INDEX' => 'PRIMARY')
  46         );
  47         while( $row = $dbr->fetchObject( $res ) ) {
  48                 $rebuilt = false;
  49                 $wgTitle = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
  50                 if( null == $wgTitle ) {
  51                         echo "Page {$row->page_id} bad title\n";
  52                         continue; // broken title?
  53                 }
  54                 $wgArticle = new Article( $wgTitle );
  55                 // If the article is cacheable, then load it
  56                 if( $wgArticle->isFileCacheable() ) {
  57                         $cache = new HTMLFileCache( $wgTitle );
  58                         if( $cache->isFileCacheGood() ) {
  59                                 if( $overwrite ) {
  60                                         $rebuilt = true;
  61                                 } else {
  62                                         echo "Page {$row->page_id} already cached\n";
  63                                         continue; // done already!
  64                                 }
  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                 $dbw->commit(); // commit any changes
  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);