From c93d3e84a48cdfe5cf397b2fbd2e215014c5777d Mon Sep 17 00:00:00 2001
From: mattab <matthieu.aubry@gmail.com>
Date: Mon, 15 Dec 2014 20:25:22 +1300
Subject: Fixes #6529 Throw an exception when codebase is older than schema to
 prevent broken race conditions

---
 core/Updater.php | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'core/Updater.php')

diff --git a/core/Updater.php b/core/Updater.php
index 692034d5e9..c9872d3481 100644
--- a/core/Updater.php
+++ b/core/Updater.php
@@ -8,6 +8,7 @@
  */
 namespace Piwik;
 use Piwik\Columns\Updater as ColumnUpdater;
+use Piwik\Exception\DatabaseSchemaIsNewerThanCodebaseException;
 
 /**
  * Load and execute all relevant, incremental update scripts for Piwik core and plugins, and bump the component version numbers for completed updates.
@@ -95,6 +96,26 @@ class Updater
         return 'version_' . $name;
     }
 
+
+    /**
+     * This method ensures that Piwik Platform cannot be running when using a NEWER database
+     */
+    public static function throwIfPiwikVersionIsOlderThanDBSchema()
+    {
+        $dbSchemaVersion = self::getCurrentRecordedComponentVersion('core');
+        $current = Version::VERSION;
+        if(-1 === version_compare($current, $dbSchemaVersion)) {
+            $messages = array(
+                Piwik::translate('General_ExceptionDatabaseVersionNewerThanCodebase', array($current, $dbSchemaVersion)),
+                Piwik::translate('General_ExceptionDatabaseVersionNewerThanCodebaseWait'),
+                // we cannot fill in the Super User emails as we are failing before Authentication was ready
+                Piwik::translate('General_ExceptionContactSupportGeneric', array('', ''))
+            );
+            throw new DatabaseSchemaIsNewerThanCodebaseException(implode(" ", $messages));
+        }
+    }
+
+
     /**
      * Returns a list of components (core | plugin) that need to run through the upgrade process.
      *
-- 
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