Add trait for the database connection

library/Icingadb/Common/Database.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Icinga\Module\Icingadb\Common;
+
+use Icinga\Application\Config as AppConfig;
+use Icinga\Data\ResourceFactory;
+use Icinga\Exception\ConfigurationError;
+use ipl\Sql\Config as SqlConfig;
+use ipl\Sql\Connection;
+use PDO;
+
+trait Database
+{
+    /** @var Connection Connection to the Icinga database */
+    private $db;
+
+    /**
+     * Get the connection to the Icinga database
+     *
+     * @return Connection
+     *
+     * @throws ConfigurationError If the related resource configuration does not exist
+     */
+    public function getDb()
+    {
+
+        if ($this->db === null) {
+            $config = new SqlConfig(ResourceFactory::getResourceConfig(
+                AppConfig::module('icingadb')->get('icingadb', 'resource', 'icingadb')
+            ));
+
+            $config->options = [
+                PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ,
+                PDO::MYSQL_ATTR_INIT_COMMAND => "SET SESSION SQL_MODE='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE"
+                    . ",ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION'"
+            ];
+
+            $this->db = new Connection($config);
+        }
+
+        return $this->db;
+    }
+}