Add a hint that some indexes are not added yet

* gives the admin a chance to discover the missing indexes and improve the performance of the instance without digging through the manual
* nicely integrated in the setup checks where this kind of hints belong to
* also adds an option to integrate this from an app based on events
* fix style of setting warnings

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

1 files changed, 39 insertions, 0 deletions

diff --git a/lib/private/DB/MissingIndexInformation.php b/lib/private/DB/MissingIndexInformation.php
new file mode 100644
index 00000000000..d6e40e0b09e
--- /dev/null
+++ b/lib/private/DB/MissingIndexInformation.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Morris Jobke <hey@morrisjobke.de>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OC\DB;
+
+
+class MissingIndexInformation {
+
+	private $listOfMissingIndexes = [];
+
+	public function addHintForMissingSubject($tableName, $indexName) {
+		$this->listOfMissingIndexes[] = [
+			'tableName' => $tableName,
+			'indexName' => $indexName
+		];
+	}
+
+	public function getListOfMissingIndexes() {
+		return $this->listOfMissingIndexes;
+	}
+}
\ No newline at end of file