add helpful message for incorrect rrddir setting

jf · Sep 30, 2009 · d916c5b · d916c5b
1 parent b1c6322
commit d916c5b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/collectd-json.rb b/lib/collectd-json.rb
@@ -98,7 +98,8 @@ class << self
 
     def hosts
       if @rrddir
-        Dir.glob("#{@rrddir}/*").map {|e| e.split('/').last }.sort
+        d = Dir.glob("#{@rrddir}/*").map {|e| e.split('/').last }.sort
+        d.empty? ? ['No hosts found. Please check <strong>rrddir</strong> in config/init.rb!'] : d
       else
         ['You need to specify <strong>rrddir</strong> in config/init.rb!']
       end