maintenance/rebuildFileCache.php

   1 <?php
   2 /**
   3  * Build file cache for content pages
   4  *
   5  * @file
   6  * @ingroup Maintenance
   7  */
   8
   9 require_once( "Maintenance.php" );
  10
  11 class RebuildFileCache extends Maintenance {
  12         public function __construct() {
  13                 parent::__construct();
  14                 $this->mDescription = "Build file cache for content pages";
  15                 $this->addArgs( array( 'start', 'overwrite' ) );
  16         }
  17
  18         public function execute() {
  19                 global $wgUseFileCache, $wgDisableCounters, $wgTitle, $wgArticle, $wgOut;
  20                 if( !$wgUseFileCache ) {
  21                         $this->error( "Nothing to do -- \$wgUseFileCache is disabled.\n", true );
  22                 }
  23                 $wgDisableCounters = false;
  24                 $start = intval( $this->getArg( 0, 0 ) );
  25                 $overwrite = $this->hasArg(1) && $this->getArg(1) === 'overwrite';
  26                 $this->output( "Building content page file cache from page {$start}!\n" );
  27
  28                 $dbr = wfGetDB( DB_SLAVE );
  29                 $start = $start > 0 ? $start : $dbr->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
  30                 $end = $dbr->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
  31                 if( !$start ) {
  32                         $this->error( "Nothing to do.\n", true );
  33                 }
  34
  35                 $_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip'; // hack, no real client
  36                 OutputPage::setEncodings(); # Not really used yet
  37
  38                 $BATCH_SIZE = 100;
  39                 # Do remaining chunk
  40                 $end += $BATCH_SIZE - 1;
  41                 $blockStart = $start;
  42                 $blockEnd = $start + $BATCH_SIZE - 1;
  43
  44                 $dbw = wfGetDB( DB_MASTER );
  45                 // Go through each page and save the output
  46                 while( $blockEnd <= $end ) {
  47                         // Get the pages
  48                         $res = $dbr->select( 'page', array('page_namespace','page_title','page_id'),
  49                                 array('page_namespace' => $wgContentNamespaces,
  50                                         "page_id BETWEEN $blockStart AND $blockEnd" ),
  51                                 array('ORDER BY' => 'page_id ASC','USE INDEX' => 'PRIMARY')
  52                         );
  53                         while( $row = $dbr->fetchObject( $res ) ) {
  54                                 $rebuilt = false;
  55                                 $wgTitle = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
  56                                 if( null == $wgTitle ) {
  57                                         $this->output( "Page {$row->page_id} bad title\n" );
  58                                         continue; // broken title?
  59                                 }
  60                                 $wgArticle = new Article( $wgTitle );
  61                                 // If the article is cacheable, then load it
  62                                 if( $wgArticle->isFileCacheable() ) {
  63                                         $cache = new HTMLFileCache( $wgTitle );
  64                                         if( $cache->isFileCacheGood() ) {
  65                                                 if( $overwrite ) {
  66                                                         $rebuilt = true;
  67                                                 } else {
  68                                                         $this->output( "Page {$row->page_id} already cached\n" );
  69                                                         continue; // done already!
  70                                                 }
  71                                         }
  72                                         ob_start( array(&$cache, 'saveToFileCache' ) ); // save on ob_end_clean()
  73                                         $wgUseFileCache = false; // hack, we don't want $wgArticle fiddling with filecache
  74                                         $wgArticle->view();
  75                                         @$wgOut->output(); // header notices
  76                                         $wgUseFileCache = true;
  77                                         ob_end_clean(); // clear buffer
  78                                         $wgOut = new OutputPage(); // empty out any output page garbage
  79                                         if( $rebuilt )
  80                                                 $this->output( "Re-cached page {$row->page_id}\n" );
  81                                         else
  82                                                 $this->output( "Cached page {$row->page_id}\n" );
  83                                 } else {
  84                                         $this->output( "Page {$row->page_id} not cacheable\n" );
  85                                 }
  86                                 $dbw->commit(); // commit any changes
  87                         }
  88                         $blockStart += $BATCH_SIZE;
  89                         $blockEnd += $BATCH_SIZE;
  90                         wfWaitForSlaves( 5 );
  91                 }
  92                 $this->output( "Done!\n" );
  93
  94                 // Remove these to be safe
  95                 if( isset($wgTitle) )
  96                         unset($wgTitle);
  97                 if( isset($wgArticle) )
  98                         unset($wgArticle);
  99         }
 100 }
 101 require_once( "commandLine.inc" );