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<?php /** * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * http://www.gnu.org/copyleft/gpl.html * * @file */ use MediaWiki\MainConfigNames; use MediaWiki\MediaWikiServices; use MediaWiki\Status\Status; use MediaWiki\Title\Title; use Wikimedia\Rdbms\IDBAccessObject; /** * Job for asynchronous rendering of thumbnails, e.g. after new uploads. * * @ingroup JobQueue */ class ThumbnailRenderJob extends Job { public function __construct( Title $title, array $params ) { parent::__construct( 'ThumbnailRender', $title, $params ); } public function run() { $uploadThumbnailRenderMethod = MediaWikiServices::getInstance() ->getMainConfig()->get( MainConfigNames::UploadThumbnailRenderMethod ); $transformParams = $this->params['transformParams']; $file = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo() ->newFile( $this->title ); $file->load( IDBAccessObject::READ_LATEST ); if ( $file && $file->exists() ) { if ( $uploadThumbnailRenderMethod === 'jobqueue' ) { $thumb = $file->transform( $transformParams, File::RENDER_NOW ); if ( !$thumb || $thumb->isError() ) { if ( $thumb instanceof MediaTransformError ) { $this->setLastError( __METHOD__ . ': thumbnail couldn\'t be generated:' . $thumb->toText() ); } else { $this->setLastError( __METHOD__ . ': thumbnail couldn\'t be generated' ); } return false; } $this->maybeEnqueueNextPage( $transformParams ); return true; } elseif ( $uploadThumbnailRenderMethod === 'http' ) { $res = $this->hitThumbUrl( $file, $transformParams ); $this->maybeEnqueueNextPage( $transformParams ); return $res; } else { $this->setLastError( __METHOD__ . ': unknown thumbnail render method ' . $uploadThumbnailRenderMethod ); return false; } } else { $this->setLastError( __METHOD__ . ': file doesn\'t exist' ); return false; } } /** * @param LocalFile $file * @param array $transformParams * @return bool Success status (error will be set via setLastError() when false) */ protected function hitThumbUrl( LocalFile $file, $transformParams ) { $config = MediaWikiServices::getInstance()->getMainConfig(); $uploadThumbnailRenderHttpCustomHost = $config->get( MainConfigNames::UploadThumbnailRenderHttpCustomHost ); $uploadThumbnailRenderHttpCustomDomain = $config->get( MainConfigNames::UploadThumbnailRenderHttpCustomDomain ); $handler = $file->getHandler(); if ( !$handler ) { $this->setLastError( __METHOD__ . ': could not get handler' ); return false; } elseif ( !$handler->normaliseParams( $file, $transformParams ) ) { $this->setLastError( __METHOD__ . ': failed to normalize' ); return false; } $thumbName = $file->thumbName( $transformParams ); $thumbUrl = $file->getThumbUrl( $thumbName ); if ( $thumbUrl === null ) { $this->setLastError( __METHOD__ . ': could not get thumb URL' ); return false; } if ( $uploadThumbnailRenderHttpCustomDomain ) { $parsedUrl = wfGetUrlUtils()->parse( $thumbUrl ); if ( !isset( $parsedUrl['path'] ) || $parsedUrl['path'] === '' ) { $this->setLastError( __METHOD__ . ": invalid thumb URL: $thumbUrl" ); return false; } $thumbUrl = '//' . $uploadThumbnailRenderHttpCustomDomain . $parsedUrl['path']; } wfDebug( __METHOD__ . ": hitting url {$thumbUrl}" ); // T203135 We don't wait for the request to complete, as this is mostly fire & forget. // Looking at the HTTP status of requests that take less than 1s is a double check. $request = MediaWikiServices::getInstance()->getHttpRequestFactory()->create( $thumbUrl, [ 'method' => 'HEAD', 'followRedirects' => true, 'timeout' => 1 ], __METHOD__ ); if ( $uploadThumbnailRenderHttpCustomHost ) { $request->setHeader( 'Host', $uploadThumbnailRenderHttpCustomHost ); } $status = $request->execute(); $statusCode = $request->getStatus(); wfDebug( __METHOD__ . ": received status {$statusCode}" ); // 400 happens when requesting a size greater or equal than the original // TODO use proper error signaling. 400 could mean a number of other things. if ( $statusCode === 200 || $statusCode === 301 || $statusCode === 302 || $statusCode === 400 ) { return true; } elseif ( $statusCode ) { $this->setLastError( __METHOD__ . ": incorrect HTTP status $statusCode when hitting $thumbUrl" ); } elseif ( $status->hasMessage( 'http-timed-out' ) ) { // T203135 we ignore timeouts, as it would be inefficient for this job to wait for // minutes for the slower thumbnails to complete. return true; } else { $this->setLastError( __METHOD__ . ': HTTP request failure: ' . Status::wrap( $status )->getWikiText( false, false, 'en' ) ); } return false; } private function maybeEnqueueNextPage( $transformParams ) { if ( ( $this->params['enqueueNextPage'] ?? false ) && ( $transformParams['page'] ?? 0 ) < ( $this->params['pageLimit'] ?? 0 ) ) { $transformParams['page'] += 1; $job = new ThumbnailRenderJob( $this->getTitle(), [ 'transformParams' => $transformParams, 'enqueueNextPage' => true, 'pageLimit' => $this->params['pageLimit'] ] ); MediaWikiServices::getInstance()->getJobQueueGroup()->lazyPush( [ $job ] ); } } /** * Whether to retry the job. * @return bool */ public function allowRetries() { // ThumbnailRenderJob is a warmup for the thumbnails cache, // so loosing it is not a problem. Most times the job fails // for non-renderable or missing images which will not be fixed // by a retry, but will create additional load on the renderer. return false; } }
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