From 435fc7234fe01ee53b19aa1baeef067964715163 Mon Sep 17 00:00:00 2001
From: Fabian Reinartz <fab.reinartz@gmail.com>
Date: Tue, 14 Jul 2015 02:46:00 +0200
Subject: [PATCH] config: add overflow detection for serverset config

---
 config/config.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/config/config.go b/config/config.go
index 281435ce5..888d5d628 100644
--- a/config/config.go
+++ b/config/config.go
@@ -428,6 +428,9 @@ type ServersetSDConfig struct {
 	Servers []string `yaml:"servers"`
 	Paths   []string `yaml:"paths"`
 	Timeout Duration `yaml:"timeout,omitempty"`
+
+	// Catches all undefined fields and must be empty after parsing.
+	XXX map[string]interface{} `yaml:",inline"`
 }
 
 // UnmarshalYAML implements the yaml.Unmarshaler interface.
@@ -449,7 +452,7 @@ func (c *ServersetSDConfig) UnmarshalYAML(unmarshal func(interface{}) error) err
 			return fmt.Errorf("serverset SD config paths must begin with '/': %s", path)
 		}
 	}
-	return nil
+	return checkOverflow(c.XXX, "serverset_sd_config")
 }
 
 // RelabelAction is the action to be performed on relabeling.