includes/jobqueue/jobs/ThumbnailRenderJob.php

   1 <?php
   2 /**
   3  * Job for asynchronous rendering of thumbnails.
   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 JobQueue
  22  */
  23
  24 /**
  25  * Job for asynchronous rendering of thumbnails.
  26  *
  27  * @ingroup JobQueue
  28  */
  29 class ThumbnailRenderJob extends Job {
  30         public function __construct( $title, $params ) {
  31                 parent::__construct( 'ThumbnailRender', $title, $params );
  32         }
  33
  34         public function run() {
  35                 global $wgUploadThumbnailRenderMethod;
  36
  37                 $transformParams = $this->params['transformParams'];
  38
  39                 $file = wfLocalFile( $this->title );
  40
  41                 if ( $file && $file->exists() ) {
  42                         if ( $wgUploadThumbnailRenderMethod === 'jobqueue' ) {
  43                                 $thumb = $file->transform( $transformParams, File::RENDER_NOW );
  44
  45                                 if ( $thumb && !$thumb->isError() ) {
  46                                         return true;
  47                                 } else {
  48                                         $this->setLastError( __METHOD__ . ': thumbnail couln\'t be generated' );
  49                                         return false;
  50                                 }
  51                         } elseif ( $wgUploadThumbnailRenderMethod === 'http' ) {
  52                                 $status = $this->hitThumbUrl( $file, $transformParams );
  53
  54                                 wfDebug( __METHOD__ . ": received status {$status}\n" );
  55
  56                                 if ( $status === 200 || $status === 301 || $status === 302 ) {
  57                                         return true;
  58                                 } elseif ( $status ) {
  59                                         // Note that this currently happens (500) when requesting sizes larger then or
  60                                         // equal to the original, which is harmless.
  61                                         $this->setLastError( __METHOD__ . ': incorrect HTTP status ' . $status );
  62                                         return false;
  63                                 } else {
  64                                         $this->setLastError( __METHOD__ . ': HTTP request failure' );
  65                                         return false;
  66                                 }
  67                         } else {
  68                                 $this->setLastError( __METHOD__ . ': unknown thumbnail render method ' . $wgUploadThumbnailRenderMethod );
  69                                 return false;
  70                         }
  71                 } else {
  72                         $this->setLastError( __METHOD__ . ': file doesn\'t exist' );
  73                         return false;
  74                 }
  75         }
  76
  77         protected function hitThumbUrl( $file, $transformParams ) {
  78                 global $wgUploadThumbnailRenderHttpCustomHost, $wgUploadThumbnailRenderHttpCustomDomain;
  79
  80                 $thumbName = $file->thumbName( $transformParams );
  81                 $thumbUrl = $file->getThumbUrl( $thumbName );
  82
  83                 if ( $wgUploadThumbnailRenderHttpCustomDomain ) {
  84                         $parsedUrl = wfParseUrl( $thumbUrl );
  85
  86                         if ( !$parsedUrl || !isset( $parsedUrl['path'] ) || !strlen( $parsedUrl['path'] ) ) {
  87                                 return false;
  88                         }
  89
  90                         $thumbUrl = '//' . $wgUploadThumbnailRenderHttpCustomDomain . $parsedUrl['path'];
  91                 }
  92
  93                 wfDebug( __METHOD__ . ": hitting url {$thumbUrl}\n" );
  94
  95                 $request = MWHttpRequest::factory( $thumbUrl, array(
  96                         'method' => 'HEAD',
  97                         'followRedirects' => true ) );
  98
  99                 if ( $wgUploadThumbnailRenderHttpCustomHost ) {
 100                         $request->setHeader( 'Host', $wgUploadThumbnailRenderHttpCustomHost );
 101                 }
 102
 103                 $status = $request->execute();
 104
 105                 return $request->getStatus();
 106         }
 107 }