1 files changed, 48 insertions, 0 deletions
diff --git a/lib/private/Files/Config/LazyPathCachedMountInfo.php b/lib/private/Files/Config/LazyPathCachedMountInfo.php
new file mode 100644
index 00000000000..d2396109b1a
--- /dev/null
+++ b/lib/private/Files/Config/LazyPathCachedMountInfo.php
@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Files\Config;
+
+use OCP\IUser;
+
+class LazyPathCachedMountInfo extends CachedMountInfo {
+	// we don't allow \ in paths so it makes a great placeholder
+	private const PATH_PLACEHOLDER = '\\PLACEHOLDER\\';
+
+	/** @var callable(CachedMountInfo): string */
+	protected $rootInternalPathCallback;
+
+	/**
+	 * @param IUser $user
+	 * @param int $storageId
+	 * @param int $rootId
+	 * @param string $mountPoint
+	 * @param string $mountProvider
+	 * @param int|null $mountId
+	 * @param callable(CachedMountInfo): string $rootInternalPathCallback
+	 * @throws \Exception
+	 */
+	public function __construct(
+		IUser $user,
+		int $storageId,
+		int $rootId,
+		string $mountPoint,
+		string $mountProvider,
+		?int $mountId,
+		callable $rootInternalPathCallback,
+	) {
+		parent::__construct($user, $storageId, $rootId, $mountPoint, $mountProvider, $mountId, self::PATH_PLACEHOLDER);
+		$this->rootInternalPathCallback = $rootInternalPathCallback;
+	}
+
+	public function getRootInternalPath(): string {
+		if ($this->rootInternalPath === self::PATH_PLACEHOLDER) {
+			$this->rootInternalPath = ($this->rootInternalPathCallback)($this);
+		}
+		return $this->rootInternalPath;
+	}
+}