CC-5814: 'Down for maintenance' page during upgrades

airtime_mvc/application/controllers/plugins/Maintenance.php

@@ -0,0 +1,15 @@
+<?php
+
+class Zend_Controller_Plugin_Maintenance extends Zend_Controller_Plugin_Abstract
+{
+    protected $maintenanceFile = '/tmp/maintenance.txt';
+
+    public function preDispatch(Zend_Controller_Request_Abstract $request) {
+        if (file_exists($this->maintenanceFile)) {
+            $request->setModuleName('default')
+                    ->setControllerName('index')
+                    ->setActionName('maintenance')
+                    ->setDispatched(true);
+        }
+    }
+}