PHRAS-288 Check if storage engines is available

lib/classes/connection/abstract.php

@@ -59,6 +59,27 @@ abstract class connection_abstract
         return $this->connection->getAttribute(constant("PDO::ATTR_SERVER_VERSION"));
     }
 
+    public function supportInnoDB()
+    {
+        if (false === $this->ping()) {
+            throw new \Exception('Mysql server is not reachable');
+        }
+
+        $stmt = $this->connection->query('SHOW ENGINES');
+        $stmt->execute();
+        $engines = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+
+        foreach ($engines as $engine) {
+            if (strtolower($engine['Engine']) !== 'innodb') {
+                continue;
+            }
+
+            return $engine['Support'] !== 'NO';
+        }
+
+        return false;
+    }
+
     public function __destruct()
     {
         $this->close();