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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Files\AppData;
use OC\Files\SimpleFS\SimpleFolder;
use OC\SystemConfig;
use OCP\Cache\CappedMemoryCache;
use OCP\Files\Folder;
use OCP\Files\IAppData;
use OCP\Files\IRootFolder;
use OCP\Files\Node;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\Files\SimpleFS\ISimpleFolder;
class AppData implements IAppData {
private IRootFolder $rootFolder;
private SystemConfig $config;
private string $appId;
private ?Folder $folder = null;
/** @var CappedMemoryCache<ISimpleFolder|NotFoundException> */
private CappedMemoryCache $folders;
/**
* AppData constructor.
*
* @param IRootFolder $rootFolder
* @param SystemConfig $systemConfig
* @param string $appId
*/
public function __construct(IRootFolder $rootFolder,
SystemConfig $systemConfig,
string $appId) {
$this->rootFolder = $rootFolder;
$this->config = $systemConfig;
$this->appId = $appId;
$this->folders = new CappedMemoryCache();
}
private function getAppDataFolderName() {
$instanceId = $this->config->getValue('instanceid', null);
if ($instanceId === null) {
throw new \RuntimeException('no instance id!');
}
return 'appdata_' . $instanceId;
}
protected function getAppDataRootFolder(): Folder {
$name = $this->getAppDataFolderName();
try {
/** @var Folder $node */
$node = $this->rootFolder->get($name);
return $node;
} catch (NotFoundException $e) {
try {
return $this->rootFolder->newFolder($name);
} catch (NotPermittedException $e) {
throw new \RuntimeException('Could not get appdata folder');
}
}
}
/**
* @return Folder
* @throws \RuntimeException
*/
private function getAppDataFolder(): Folder {
if ($this->folder === null) {
$name = $this->getAppDataFolderName();
try {
$this->folder = $this->rootFolder->get($name . '/' . $this->appId);
} catch (NotFoundException $e) {
$appDataRootFolder = $this->getAppDataRootFolder();
try {
$this->folder = $appDataRootFolder->get($this->appId);
} catch (NotFoundException $e) {
try {
$this->folder = $appDataRootFolder->newFolder($this->appId);
} catch (NotPermittedException $e) {
throw new \RuntimeException('Could not get appdata folder for ' . $this->appId);
}
}
}
}
return $this->folder;
}
public function getFolder(string $name): ISimpleFolder {
$key = $this->appId . '/' . $name;
if ($cachedFolder = $this->folders->get($key)) {
if ($cachedFolder instanceof \Exception) {
throw $cachedFolder;
} else {
return $cachedFolder;
}
}
try {
// Hardening if somebody wants to retrieve '/'
if ($name === '/') {
$node = $this->getAppDataFolder();
} else {
$path = $this->getAppDataFolderName() . '/' . $this->appId . '/' . $name;
$node = $this->rootFolder->get($path);
}
} catch (NotFoundException $e) {
$this->folders->set($key, $e);
throw $e;
}
/** @var Folder $node */
$folder = new SimpleFolder($node);
$this->folders->set($key, $folder);
return $folder;
}
public function newFolder(string $name): ISimpleFolder {
$key = $this->appId . '/' . $name;
$folder = $this->getAppDataFolder()->newFolder($name);
$simpleFolder = new SimpleFolder($folder);
$this->folders->set($key, $simpleFolder);
return $simpleFolder;
}
public function getDirectoryListing(): array {
$listing = $this->getAppDataFolder()->getDirectoryListing();
$fileListing = array_map(function (Node $folder) {
if ($folder instanceof Folder) {
return new SimpleFolder($folder);
}
return null;
}, $listing);
$fileListing = array_filter($fileListing);
return array_values($fileListing);
}
public function getId(): int {
return $this->getAppDataFolder()->getId();
}
}
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