maintenance/rebuildFileCache.php

   1 <?php
   2 /**
   3  * Build file cache for content pages
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once( __DIR__ . '/Maintenance.php' );
  25
  26 /**
  27  * Maintenance script that builds file cache for content pages.
  28  *
  29  * @ingroup Maintenance
  30  */
  31 class RebuildFileCache extends Maintenance {
  32         public function __construct() {
  33                 parent::__construct();
  34                 $this->mDescription = "Build file cache for content pages";
  35                 $this->addOption( 'start', 'Page_id to start from', false, true );
  36                 $this->addOption( 'end', 'Page_id to end on', false, true );
  37                 $this->addOption( 'overwrite', 'Refresh page cache' );
  38                 $this->setBatchSize( 100 );
  39         }
  40
  41         public function finalSetup() {
  42                 global $wgDebugToolbar;
  43
  44                 // Debug toolbar makes content uncacheable so we disable it.
  45                 // Has to be done before Setup.php initialize MWDebug
  46                 $wgDebugToolbar = false;
  47                 parent::finalSetup();
  48         }
  49
  50         public function execute() {
  51                 global $wgUseFileCache, $wgReadOnly, $wgContentNamespaces, $wgRequestTime;
  52                 global $wgTitle, $wgOut;
  53                 if ( !$wgUseFileCache ) {
  54                         $this->error( "Nothing to do -- \$wgUseFileCache is disabled.", true );
  55                 }
  56
  57                 $wgReadOnly = 'Building cache'; // avoid DB writes (like enotif/counters)
  58
  59                 $start = $this->getOption( 'start', "0" );
  60                 if ( !ctype_digit( $start ) ) {
  61                         $this->error( "Invalid value for start parameter.", true );
  62                 }
  63                 $start = intval( $start );
  64
  65                 $end = $this->getOption( 'end', "0" );
  66                 if ( !ctype_digit( $end ) ) {
  67                         $this->error( "Invalid value for end parameter.", true );
  68                 }
  69                 $end = intval( $end );
  70
  71                 $this->output( "Building content page file cache from page {$start}!\n" );
  72
  73                 $dbr = wfGetDB( DB_SLAVE );
  74                 $overwrite = $this->getOption( 'overwrite', false );
  75                 $start = ( $start > 0 )
  76                         ? $start
  77                         : $dbr->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
  78                 $end = ( $end > 0 )
  79                         ? $end
  80                         : $dbr->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
  81                 if ( !$start ) {
  82                         $this->error( "Nothing to do.", true );
  83                 }
  84
  85                 $_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip'; // hack, no real client
  86
  87                 # Do remaining chunk
  88                 $end += $this->mBatchSize - 1;
  89                 $blockStart = $start;
  90                 $blockEnd = $start + $this->mBatchSize - 1;
  91
  92                 $dbw = wfGetDB( DB_MASTER );
  93                 // Go through each page and save the output
  94                 while ( $blockEnd <= $end ) {
  95                         // Get the pages
  96                         $res = $dbr->select( 'page', array( 'page_namespace', 'page_title', 'page_id' ),
  97                                 array( 'page_namespace' => $wgContentNamespaces,
  98                                         "page_id BETWEEN $blockStart AND $blockEnd" ),
  99                                 array( 'ORDER BY' => 'page_id ASC', 'USE INDEX' => 'PRIMARY' )
 100                         );
 101
 102                         $dbw->begin( __METHOD__ ); // for any changes
 103                         foreach ( $res as $row ) {
 104                                 $rebuilt = false;
 105                                 $wgRequestTime = microtime( true ); # bug 22852
 106
 107                                 $wgTitle = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
 108                                 if ( null == $wgTitle ) {
 109                                         $this->output( "Page {$row->page_id} has bad title\n" );
 110                                         continue; // broken title?
 111                                 }
 112
 113                                 $context = new RequestContext;
 114                                 $context->setTitle( $wgTitle );
 115                                 $article = Article::newFromTitle( $wgTitle, $context );
 116                                 $context->setWikiPage( $article->getPage() );
 117
 118                                 $wgOut = $context->getOutput(); // set display title
 119
 120                                 // If the article is cacheable, then load it
 121                                 if ( $article->isFileCacheable() ) {
 122                                         $cache = HTMLFileCache::newFromTitle( $wgTitle, 'view' );
 123                                         if ( $cache->isCacheGood() ) {
 124                                                 if ( $overwrite ) {
 125                                                         $rebuilt = true;
 126                                                 } else {
 127                                                         $this->output( "Page {$row->page_id} already cached\n" );
 128                                                         continue; // done already!
 129                                                 }
 130                                         }
 131                                         ob_start( array( &$cache, 'saveToFileCache' ) ); // save on ob_end_clean()
 132                                         $wgUseFileCache = false; // hack, we don't want $article fiddling with filecache
 133                                         $article->view();
 134                                         wfSuppressWarnings(); // header notices
 135                                         $wgOut->output();
 136                                         wfRestoreWarnings();
 137                                         $wgUseFileCache = true;
 138                                         ob_end_clean(); // clear buffer
 139                                         if ( $rebuilt ) {
 140                                                 $this->output( "Re-cached page {$row->page_id}\n" );
 141                                         } else {
 142                                                 $this->output( "Cached page {$row->page_id}\n" );
 143                                         }
 144                                 } else {
 145                                         $this->output( "Page {$row->page_id} not cacheable\n" );
 146                                 }
 147                         }
 148                         $dbw->commit( __METHOD__ ); // commit any changes (just for sanity)
 149
 150                         $blockStart += $this->mBatchSize;
 151                         $blockEnd += $this->mBatchSize;
 152                 }
 153                 $this->output( "Done!\n" );
 154
 155                 // Remove these to be safe
 156                 if ( isset( $wgTitle ) ) {
 157                         unset( $wgTitle );
 158                 }
 159         }
 160 }
 161
 162 $maintClass = "RebuildFileCache";
 163 require_once( RUN_MAINTENANCE_IF_MAIN );