+ if do_nodes
+ response.headers['Error'] = "Searching of nodes is currently unavailable"
+ render :nothing => true, :status => :service_unavailable
+ return false
+ end
+
+ unless value
+ response.headers['Error'] = "Searching for a key without value is currently unavailable"
+ render :nothing => true, :status => :service_unavailable
+ return false
+ end
+