Major refactoring to follow the Logbook model

src/Monolog/Formatter/JsonFormatter.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Formatter;
+
+use Monolog\Logger;
+
+class JsonFormatter implements FormatterInterface
+{
+    public function format($message)
+    {
+        $message['message'] = json_encode($message['message']);
+        return $message;
+    }
+}