Move lib/repair to lib/private/repair

1 files changed, 77 insertions, 0 deletions

diff --git a/lib/private/repair/searchlucenetables.php b/lib/private/repair/searchlucenetables.php
new file mode 100644
index 00000000000..5ae8a300246
--- /dev/null
+++ b/lib/private/repair/searchlucenetables.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * @author Jörn Friedrich Dreyer <jfd@butonic.de>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @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\Repair;
+
+use OC\Hooks\BasicEmitter;
+
+class SearchLuceneTables extends BasicEmitter implements \OC\RepairStep {
+
+	public function getName() {
+		return 'Repair duplicate entries in oc_lucene_status';
+	}
+
+	/**
+	 * Fix duplicate entries in oc_lucene_status
+	 *
+	 * search_lucene prior to v0.5.0 did not have a primary key on the lucene_status table. Newer versions do, which
+	 * causes the migration check to fail because it tries to insert duplicate rows into the new schema.
+	 *
+	 * FIXME Currently, apps don't have a way of repairing anything before the migration check:
+	 * @link https://github.com/owncloud/core/issues/10980
+	 *
+	 * As a result this repair step needs to live in the core repo, although it belongs into search_lucene:
+	 * @link https://github.com/owncloud/core/issues/10205#issuecomment-54957557
+	 *
+	 * It will completely remove any rows that make a file id have more than one status:
+	 *  fileid | status                       fileid | status
+	 * --------+--------     will become     --------+--------
+	 *     2   |   E                             3   |   E
+	 *     2   |   I
+	 *     3   |   E
+	 *
+	 * search_lucene will then reindex the fileids without a status when the next indexing job is executed
+	 */
+	public function run() {
+		if (\OC_DB::tableExists('lucene_status')) {
+			$this->emit('\OC\Repair', 'info', array('removing duplicate entries from lucene_status'));
+
+			$connection = \OC_DB::getConnection();
+			$query = $connection->prepare('
+				DELETE FROM `*PREFIX*lucene_status`
+				WHERE `fileid` IN (
+					SELECT `fileid`
+					FROM (
+						SELECT `fileid`
+						FROM `*PREFIX*lucene_status`
+						GROUP BY `fileid`
+						HAVING count(`fileid`) > 1
+					) AS `mysqlerr1093hack`
+				)');
+			$query->execute();
+		} else {
+			$this->emit('\OC\Repair', 'info', array('lucene_status table does not exist -> nothing to do'));
+		}
+	}
+
+}
+