/**
* Stash the file and return the file key
* Also re-raises exceptions with slightly more informative message strings (useful for API)
* @throws MWException
* @return string File key
*/
private function performStash()
{
try {
$stashFile = $this->mUpload->stashFile();
if (!$stashFile) {
throw new MWException('Invalid stashed file');
}
$fileKey = $stashFile->getFileKey();
} catch (MWException $e) {
$message = 'Stashing temporary file failed: ' . get_class($e) . ' ' . $e->getMessage();
wfDebug(__METHOD__ . ' ' . $message . "\n");
throw new MWException($message);
}
return $fileKey;
}
