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AssembleUploadChunksJob.php
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AssembleUploadChunksJob.php
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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\Api\ApiUpload;
use MediaWiki\Context\RequestContext;
use MediaWiki\Logger\LoggerFactory;
use MediaWiki\Request\WebRequestUpload;
use MediaWiki\Status\Status;
use Wikimedia\ScopedCallback;
/**
* Assemble the segments of a chunked upload.
*
* @ingroup Upload
* @ingroup JobQueue
*/
class AssembleUploadChunksJob extends Job implements GenericParameterJob {
public function __construct( array $params ) {
parent::__construct( 'AssembleUploadChunks', $params );
$this->removeDuplicates = true;
}
public function run() {
$scope = RequestContext::importScopedSession( $this->params['session'] );
$this->addTeardownCallback( static function () use ( &$scope ) {
ScopedCallback::consume( $scope ); // T126450
} );
$logger = LoggerFactory::getInstance( 'upload' );
$context = RequestContext::getMain();
$user = $context->getUser();
try {
if ( !$user->isRegistered() ) {
$this->setLastError( "Could not load the author user from session." );
return false;
}
// TODO add some sort of proper locking maybe
$startingStatus = UploadBase::getSessionStatus( $user, $this->params['filekey'] );
if (
!$startingStatus ||
( $startingStatus['result'] ?? '' ) !== 'Poll' ||
( $startingStatus['stage'] ?? '' ) !== 'queued'
) {
$logger->warning( "Tried to assemble upload that is in stage {stage}/{result}",
[
'stage' => $startingStatus['stage'] ?? '-',
'result' => $startingStatus['result'] ?? '-',
'status' => (string)( $startingStatus['status'] ?? '-' ),
'filekey' => $this->params['filekey'],
'filename' => $this->params['filename'],
'user' => $user->getName(),
]
);
// If it is marked as currently in progress, abort. Otherwise
// assume it is some sort of replag issue or maybe a retry even
// though retries are impossible and just warn.
if (
$startingStatus &&
$startingStatus['stage'] === 'assembling' &&
$startingStatus['result'] !== 'Failure'
) {
$this->setLastError( __METHOD__ . " already in progress" );
return false;
}
}
UploadBase::setSessionStatus(
$user,
$this->params['filekey'],
[ 'result' => 'Poll', 'stage' => 'assembling', 'status' => Status::newGood() ]
);
$upload = new UploadFromChunks( $user );
$upload->continueChunks(
$this->params['filename'],
$this->params['filekey'],
new WebRequestUpload( $context->getRequest(), 'null' )
);
if (
isset( $this->params['filesize'] ) &&
$this->params['filesize'] !== (int)$upload->getOffset()
) {
// Check to make sure we are not executing prior to the API's
// transaction being committed. (T350917)
throw new UnexpectedValueException(
"UploadStash file size does not match job's. Potential mis-nested transaction?"
);
}
// Combine all of the chunks into a local file and upload that to a new stash file
$status = $upload->concatenateChunks();
if ( !$status->isGood() ) {
UploadBase::setSessionStatus(
$user,
$this->params['filekey'],
[ 'result' => 'Failure', 'stage' => 'assembling', 'status' => $status ]
);
$logger->info( "Chunked upload assembly job failed for {filekey} because {status}",
[
'filekey' => $this->params['filekey'],
'filename' => $this->params['filename'],
'user' => $user->getName(),
'status' => (string)$status
]
);
// the chunks did not get assembled, but this should not be considered a job
// failure - they simply didn't pass verification for some reason, and that
// reason is stored in above session to inform the clients
return true;
}
// We can only get warnings like 'duplicate' after concatenating the chunks
$status = Status::newGood();
$status->value = [
'warnings' => UploadBase::makeWarningsSerializable(
$upload->checkWarnings( $user )
)
];
// We have a new filekey for the fully concatenated file
$newFileKey = $upload->getStashFile()->getFileKey();
// Remove the old stash file row and first chunk file
// Note: This does not delete the chunks, only the stash file
// which is same as first chunk but with a different name.
$upload->stash->removeFileNoAuth( $this->params['filekey'] );
// Build the image info array while we have the local reference handy
$apiUpload = ApiUpload::getDummyInstance();
$imageInfo = $apiUpload->getUploadImageInfo( $upload );
// Cleanup any temporary local file
$upload->cleanupTempFile();
// Cache the info so the user doesn't have to wait forever to get the final info
UploadBase::setSessionStatus(
$user,
$this->params['filekey'],
[
'result' => 'Success',
'stage' => 'assembling',
'filekey' => $newFileKey,
'imageinfo' => $imageInfo,
'status' => $status
]
);
$logger->info( "{filekey} successfully assembled into {newkey}",
[
'filekey' => $this->params['filekey'],
'newkey' => $newFileKey,
'filename' => $this->params['filename'],
'user' => $user->getName(),
'status' => (string)$status
]
);
} catch ( Exception $e ) {
UploadBase::setSessionStatus(
$user,
$this->params['filekey'],
[
'result' => 'Failure',
'stage' => 'assembling',
'status' => Status::newFatal( 'api-error-stashfailed' )
]
);
$this->setLastError( get_class( $e ) . ": " . $e->getMessage() );
// To be extra robust.
MWExceptionHandler::rollbackPrimaryChangesAndLog( $e );
return false;
}
return true;
}
public function getDeduplicationInfo() {
$info = parent::getDeduplicationInfo();
if ( is_array( $info['params'] ) ) {
$info['params'] = [ 'filekey' => $info['params']['filekey'] ];
}
return $info;
}
public function allowRetries() {
return false;
}
}

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AssembleUploadChunksJob.php (6 KB)

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