/**
* Handle an upload resume.
*
* @param Request $request
* @param ResumableUploadSession $uploadSession
* @throws \SRIO\RestUploadBundle\Exception\UploadProcessorException
* @return UploadResult
*/
protected function handleResume(Request $request, ResumableUploadSession $uploadSession)
{
$filePath = $uploadSession->getFilePath();
$context = new UploadContext();
$context->setStorageName($uploadSession->getStorageName());
$contentLength = $request->headers->get('Content-Length');
if ($request->headers->has('Content-Range')) {
$range = $this->parseContentRange($request->headers->get('Content-Range'));
if ($range['total'] != $uploadSession->getContentLength()) {
throw new UploadProcessorException(sprintf('File size must be "%d", range total length is %d', $uploadSession->getContentLength(), $range['total']));
} elseif ($range['start'] === '*') {
if ($contentLength == 0) {
$file = $this->storageHandler->get($context, $filePath);
return $this->requestUploadStatus($context, $uploadSession, $file, $range);
}
throw new UploadProcessorException('Content-Length must be 0 if asking upload status');
}
$uploaded = $this->storageHandler->size($context, $filePath);
if ($range['start'] != $uploaded) {
throw new UploadProcessorException(sprintf('Unable to start at %d while uploaded is %d', $range['start'], $uploaded));
}
} else {
$range = array('start' => 0, 'end' => $uploadSession->getContentLength() - 1, 'total' => $uploadSession->getContentLength() - 1);
}
// Handle upload from
$handler = $this->getRequestContentHandler($request);
$writer = $this->storageHandler->getStream($context, $filePath);
if ($writer->open(new StreamMode('c')) !== true) {
throw new UploadProcessorException('Unable to open stream');
}
$writer->seek($range['start']);
$wrote = 0;
while (!$handler->eof()) {
if (($bytes = $writer->write($handler->gets())) !== false) {
$wrote += $bytes;
} else {
throw new UploadProcessorException('Unable to wrote to file');
}
}
$writer->close();
// Get file in context and its size
$file = $this->storageHandler->get($context, $filePath);
$size = $file->getSize();
// If upload is completed, create the upload file, else
// return like the request upload status
if ($size < $uploadSession->getContentLength()) {
return $this->requestUploadStatus($context, $uploadSession, $file, $range);
} elseif ($size == $uploadSession->getContentLength()) {
return $this->handleCompletedUpload($context, $uploadSession, $file);
} else {
throw new UploadProcessorException('Wrote file size is greater that expected Content-Length');
}
}
