1 files changed, 78 insertions, 0 deletions
diff --git a/lib/private/Files/Cache/StorageGlobal.php b/lib/private/Files/Cache/StorageGlobal.php
new file mode 100644
index 00000000000..791835baccc
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+++ b/lib/private/Files/Cache/StorageGlobal.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * @copyright Robin Appelman <robin@icewind.nl>
+ *
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OC\Files\Cache;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\Files\Mount\IMountPoint;
+use OCP\IDBConnection;
+
+/**
+ * Handle the mapping between the string and numeric storage ids
+ *
+ * Each storage has 2 different ids
+ *    a string id which is generated by the storage backend and reflects the configuration of the storage (e.g. 'smb://user@host/share')
+ *    and a numeric storage id which is referenced in the file cache
+ *
+ * A mapping between the two storage ids is stored in the database and accessible trough this class
+ *
+ * @package OC\Files\Cache
+ */
+class StorageGlobal {
+	/** @var IDBConnection */
+	private $connection;
+
+	/** @var array[] */
+	private $cache = [];
+
+	public function __construct(IDBConnection $connection) {
+		$this->connection = $connection;
+	}
+
+	/**
+	 * @param string[] $storageIds
+	 */
+	public function loadForStorageIds(array $storageIds) {
+		$builder = $this->connection->getQueryBuilder();
+		$query = $builder->select(['id', 'numeric_id', 'available', 'last_checked'])
+			->from('storages')
+			->where($builder->expr()->in('id', $builder->createNamedParameter(array_values($storageIds), IQueryBuilder::PARAM_STR_ARRAY)));
+
+		$result = $query->execute();
+		while ($row = $result->fetch()) {
+			$this->cache[$row['id']] = $row;
+		}
+	}
+
+	/**
+	 * @param string $storageId
+	 * @return array|null
+	 */
+	public function getStorageInfo($storageId) {
+		if (!isset($this->cache[$storageId])) {
+			$this->loadForStorageIds([$storageId]);
+		}
+		return isset($this->cache[$storageId]) ? $this->cache[$storageId] : null;
+	}
+
+	public function clearCache() {
+		$this->cache = [];
+	}
+}