CloudStorage::moveIntoCloud

protected function moveIntoCloud(CCloudStorageBucket $bucket, $path, $file)
{
	$result = new Result();
	$absPath = CTempFile::getAbsoluteRoot();
	$relativePath = $path;
	if (mb_substr($path, 0, mb_strlen($absPath)) == $absPath && mb_strpos($path, "/bxu/") > 0)
		$relativePath = mb_substr($path, mb_strpos($path, "/bxu/"));
	$subdir = explode("/", trim($relativePath, "/"));
	$filename = array_pop($subdir);
	if (!isset(BitrixMainApplication::getInstance()->getSession()["upload_tmp"]))
	{
		BitrixMainApplication::getInstance()->getSession()["upload_tmp"] = array();
	}

	if (!isset(BitrixMainApplication::getInstance()->getSession()["upload_tmp"][$path]))
	{
		$relativePath = BitrixMainApplication::getInstance()->getSession()["upload_tmp"][$path] =CCloudTempFile::GetDirectoryName($bucket, 12).$filename;
	}
	else
	{
		$relativePath = BitrixMainApplication::getInstance()->getSession()["upload_tmp"][$path];
	}

	$upload = new CCloudStorageUpload($relativePath);
	$finished = false;
	if(!$upload->isStarted() && !$upload->start($bucket->ID, $file["size"], $file["type"]))
	{
		$result->addError(new Error(Loc::getMessage("BXU_FileTransferIntoTheCloudIsFailed"), "BXU346.2"));
	}
	else if (!($fileContent = BitrixMainIOFile::getFileContents($file["tmp_name"])))
	{
		$result->addError(new Error(Loc::getMessage("BXU_FileIsFailedToRead"), "BXU346.3"));
	}
	else
	{
		$fails = 0;
		$success = false;
		while ($upload->hasRetries())
		{
			if (method_exists($upload, "part") && $upload->part($fileContent, ($file["number"] ?? 0)) ||
				!method_exists($upload, "part") && $upload->next($fileContent))
			{
				$success = true;
				break;
			}
			$fails++;
		}
		if (!$success)
		{
			$result->addError(new Error("Could not upload file for {$fails} times.", "BXU346.4"));
		}
		else if (isset($file["count"]) && $upload->GetPartCount() < $file["count"])
		{
		}
		else if (!$upload->finish())
		{
			$result->addError(new Error("Could not resume file transfer.", "BXU346.5"));
		}
		else
		{
			$finished = true;
		}
	}

	$result->setData(array(
		"tmp_name" => $bucket->getFileSRC($relativePath),
		"size" => $file["size"],
		"type" => $file["type"],
		"finished" => $finished
	));
	return $result;
}