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  * @ingroup Maintenance
  21  */
  22
  23 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  24
  25 class RebuildFileCache extends Maintenance {
  26         public function __construct() {
  27                 parent::__construct();
  28                 $this->mDescription = "Build file cache for content pages";
  29                 $this->addOption( 'start', 'Page_id to start from', false, true );
  30                 $this->addOption( 'end', 'Page_id to end on', false, true );
  31                 $this->addOption( 'overwrite', 'Refresh page cache' );
  32                 $this->setBatchSize( 100 );
  33         }
  34
  35         public function execute() {
  36                 global $wgUseFileCache, $wgReadOnly, $wgContentNamespaces, $wgRequestTime;
  37                 global $wgTitle, $wgOut;
  38                 if ( !$wgUseFileCache ) {
  39                         $this->error( "Nothing to do -- \$wgUseFileCache is disabled.", true );
  40                 }
  41                 $wgReadOnly = 'Building cache'; // avoid DB writes (like enotif/counters)
  42
  43                 $start = $this->getOption( 'start', "0" );
  44                 if ( !ctype_digit( $start ) ) {
  45                         $this->error( "Invalid value for start parameter.", true );
  46                 }
  47                 $start = intval( $start );
  48
  49                 $end = $this->getOption( 'end', "0" );
  50                 if ( !ctype_digit( $end ) ) {
  51                         $this->error( "Invalid value for end parameter.", true );
  52                 }
  53                 $end = intval( $end );
  54
  55                 $this->output( "Building content page file cache from page {$start}!\n" );
  56
  57                 $dbr = wfGetDB( DB_SLAVE );
  58                 $overwrite = $this->getOption( 'overwrite', false );
  59                 $start = ( $start > 0 )
  60                         ? $start
  61                         : $dbr->selectField( 'page', 'MIN(page_id)', false, __FUNCTION__ );
  62                 $end = ( $end > 0 )
  63                         ? $end
  64                         : $dbr->selectField( 'page', 'MAX(page_id)', false, __FUNCTION__ );
  65                 if ( !$start ) {
  66                         $this->error( "Nothing to do.", true );
  67                 }
  68
  69                 $_SERVER['HTTP_ACCEPT_ENCODING'] = 'bgzip'; // hack, no real client
  70
  71                 # Do remaining chunk
  72                 $end += $this->mBatchSize - 1;
  73                 $blockStart = $start;
  74                 $blockEnd = $start + $this->mBatchSize - 1;
  75
  76                 $dbw = wfGetDB( DB_MASTER );
  77                 // Go through each page and save the output
  78                 while ( $blockEnd <= $end ) {
  79                         // Get the pages
  80                         $res = $dbr->select( 'page', array( 'page_namespace', 'page_title', 'page_id' ),
  81                                 array( 'page_namespace' => $wgContentNamespaces,
  82                                         "page_id BETWEEN $blockStart AND $blockEnd" ),
  83                                 array( 'ORDER BY' => 'page_id ASC', 'USE INDEX' => 'PRIMARY' )
  84                         );
  85
  86                         $dbw->begin(); // for any changes
  87                         foreach ( $res as $row ) {
  88                                 $rebuilt = false;
  89                                 $wgRequestTime = wfTime(); # bug 22852
  90                                 $context = new RequestContext;
  91                                 $wgTitle = Title::makeTitleSafe( $row->page_namespace, $row->page_title );
  92                                 $context->setTitle( $wgTitle );
  93                                 if ( null == $wgTitle ) {
  94                                         $this->output( "Page {$row->page_id} has bad title\n" );
  95                                         continue; // broken title?
  96                                 }
  97                                 $wgOut = $context->getOutput(); // set display title
  98                                 $article = new Article( $wgTitle );
  99                                 // If the article is cacheable, then load it
 100                                 if ( $article->isFileCacheable() ) {
 101                                         $cache = HTMLFileCache::newFromTitle( $wgTitle, 'view' );
 102                                         if ( $cache->isCacheGood() ) {
 103                                                 if ( $overwrite ) {
 104                                                         $rebuilt = true;
 105                                                 } else {
 106                                                         $this->output( "Page {$row->page_id} already cached\n" );
 107                                                         continue; // done already!
 108                                                 }
 109                                         }
 110                                         ob_start( array( &$cache, 'saveToFileCache' ) ); // save on ob_end_clean()
 111                                         $wgUseFileCache = false; // hack, we don't want $article fiddling with filecache
 112                                         $article->view();
 113                                         wfSuppressWarnings(); // header notices
 114                                         $wgOut->output();
 115                                         wfRestoreWarnings();
 116                                         $wgUseFileCache = true;
 117                                         ob_end_clean(); // clear buffer
 118                                         if ( $rebuilt ) {
 119                                                 $this->output( "Re-cached page {$row->page_id}\n" );
 120                                         } else {
 121                                                 $this->output( "Cached page {$row->page_id}\n" );
 122                                         }
 123                                 } else {
 124                                         $this->output( "Page {$row->page_id} not cacheable\n" );
 125                                 }
 126                         }
 127                         $dbw->commit(); // commit any changes (just for sanity)
 128
 129                         $blockStart += $this->mBatchSize;
 130                         $blockEnd += $this->mBatchSize;
 131                 }
 132                 $this->output( "Done!\n" );
 133
 134                 // Remove these to be safe
 135                 if ( isset( $wgTitle ) )
 136                         unset( $wgTitle );
 137         }
 138 }
 139
 140 $maintClass = "RebuildFileCache";
 141 require_once( RUN_MAINTENANCE_IF_MAIN );