HOR-1750

workflow/engine/src/ProcessMaker/Policies/ControlUnderUpdating.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace ProcessMaker\Policies;
+
+use \Luracast\Restler\iAuthenticate;
+use \Luracast\Restler\RestException;
+
+/**
+ * ControlUnderUpdating sends an error signal 503 to report that the application 
+ * is in update.
+ */
+class ControlUnderUpdating implements iAuthenticate
+{
+
+    /**
+     * Access verification method.
+     *
+     * API access will be denied when this method returns false
+     *
+     * @return boolean true when api access is allowed false otherwise
+     * @throws RestException
+     */
+    public function __isAllowed()
+    {
+        $response = true;
+        $underUpdating = \Bootstrap::isPMUnderUpdating();
+        if ($underUpdating['action']) {
+            $sysTemp = true;
+            if (defined("SYS_TEMP")) {
+                $sysTemp = $underUpdating['workspace'] == SYS_TEMP;
+            }
+            if ($underUpdating['workspace'] == "true" || $sysTemp) {
+                $mesage = 'The server is currently unable to handle the request '
+                        . 'due to a temporary overloading or maintenance of the '
+                        . 'server (An application update has probably been '
+                        . 'performed on the server).';
+                throw new RestException(503, $mesage);
+            }
+        }
+        return $response;
+    }
+
+    /**
+     * Required by interface iAuthenticate 
+     * @return string string to be used with WWW-Authenticate header
+     * @example Basic
+     * @example Digest
+     * @example OAuth
+     * @return string
+     */
+    public function __getWWWAuthenticateString()
+    {
+        return '';
+    }
+
+}