From 15de85bf59fbf8f3fa9b94bddba91ccc68b701b8 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Fri, 15 May 2015 15:25:33 +0200
Subject: [PATCH] implement simple maintenance switch

---
 app/Web.php         | 46 ++++++++++++++++++++++++---------------------
 app/views/503.phtml | 12 ++++++++++++
 2 files changed, 37 insertions(+), 21 deletions(-)
 create mode 100644 app/views/503.phtml

diff --git a/app/Web.php b/app/Web.php
index 0353a99..b7bc23c 100644
--- a/app/Web.php
+++ b/app/Web.php
@@ -24,27 +24,31 @@ class Web
 	}
 
 	function __invoke(Dispatcher $dispatcher) {
-		$route = $dispatcher->dispatch($this->request->getRequestMethod(),
-			$this->baseUrl->pathinfo($this->request->getRequestUrl()));
-
-		switch ($route[0]) {
-			case Dispatcher::NOT_FOUND:
-				$this->display(404, null, 404);
-				break;
-
-			case Dispatcher::METHOD_NOT_ALLOWED:
-				$this->display(405, null, 405, ["Allowed" => $route[1]]);
-				break;
-
-			case Dispatcher::FOUND:
-				list(, $handler, $args) = $route;
-				try {
-					$handler(array_map("urldecode", $args));
-				} catch (\Exception $exception) {
-					self::cleanBuffers();
-					$this->display(500, compact("exception"), 500, ["X-Exception", get_class($exception)]);
-				}
-				break;
+		if (!file_exists("../config/maintenance")) {
+			$route = $dispatcher->dispatch($this->request->getRequestMethod(),
+				$this->baseUrl->pathinfo($this->request->getRequestUrl()));
+
+			switch ($route[0]) {
+				case Dispatcher::NOT_FOUND:
+					$this->display(404, null, 404);
+					break;
+
+				case Dispatcher::METHOD_NOT_ALLOWED:
+					$this->display(405, null, 405, ["Allowed" => $route[1]]);
+					break;
+
+				case Dispatcher::FOUND:
+					list(, $handler, $args) = $route;
+					try {
+						$handler(array_map("urldecode", $args));
+					} catch (\Exception $exception) {
+						self::cleanBuffers();
+						$this->display(500, compact("exception"), 500, ["X-Exception", get_class($exception)]);
+					}
+					break;
+			}
+		} else {
+			$this->display(503, null, 503);
 		}
 
 		$this->response->send();
diff --git a/app/views/503.phtml b/app/views/503.phtml
new file mode 100644
index 0000000..a22bc2b
--- /dev/null
+++ b/app/views/503.phtml
@@ -0,0 +1,12 @@
+<?php $this->layout("layout") ?>
+
+<div class="page-header">
+	<h1>Service unavailable <small>503</small></h1>
+</div>
+
+
+<div class="alert alert-warning" role="alert">
+	<strong>We're down for maintenance!</strong>
+	<br>
+	Sorry &amp; keep tuned!
+</div>
-- 
2.30.2