Add a repair step to delete old tables

lib/private/repair.php

@@ -13,6 +13,7 @@ use OC\Hooks\Emitter;
 use OC\Repair\AssetCache;
 use OC\Repair\CleanTags;
 use OC\Repair\Collation;
+use OC\Repair\DropOldTables;
 use OC\Repair\FillETags;
 use OC\Repair\InnoDB;
 use OC\Repair\RepairConfig;
@@ -84,6 +85,7 @@ class Repair extends BasicEmitter {
 			new AssetCache(),
 			new FillETags(\OC_DB::getConnection()),
 			new CleanTags(\OC_DB::getConnection()),
+			new DropOldTables(\OC_DB::getConnection()),
 		);
 	}
 

lib/repair/dropoldtables.php

+<?php
+/**
+ * ownCloud
+ *
+ * @author Joas Schilling
+ * @copyright 2015 Joas Schilling nickvergessen@owncloud.com
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Repair;
+
+
+use OC\DB\Connection;
+use OC\Hooks\BasicEmitter;
+use OC\RepairStep;
+
+class DropOldTables extends BasicEmitter implements RepairStep {
+
+	/** @var Connection */
+	protected $connection;
+
+	/**
+	 * @param Connection $connection
+	 */
+	public function __construct(Connection $connection) {
+		$this->connection = $connection;
+	}
+
+	/**
+	 * Returns the step's name
+	 *
+	 * @return string
+	 */
+	public function getName() {
+		return 'Drop old database tables';
+	}
+
+	/**
+	 * Run repair step.
+	 * Must throw exception on error.
+	 *
+	 * @throws \Exception in case of failure
+	 */
+	public function run() {
+		foreach ($this->oldDatabaseTables() as $tableName) {
+			if ($this->connection->tableExists($tableName)){
+				$this->emit('\OC\Repair', 'info', [
+					sprintf('Table %s has been deleted', $tableName)
+				]);
+				$this->connection->dropTable($tableName);
+			}
+		}
+	}
+
+	/**
+	 * Returns a list of outdated tables which are not used anymore
+	 * @return array
+	 */
+	protected function oldDatabaseTables() {
+		return [
+			'calendar_calendars',
+			'calendar_objects',
+			'calendar_share_calendar',
+			'calendar_share_event',
+			'foldersize',
+			'fscache',
+			'locks',
+			'log',
+			'media_albums',
+			'media_artists',
+			'media_sessions',
+			'media_songs',
+			'media_users',
+			'permissions',
+			'pictures_images_cache',
+			'queuedtasks',
+			'sharing',
+		];
+	}
+}