app/controllers/prosperity/metrics_controller.rb in prosperity-0.0.5 vs app/controllers/prosperity/metrics_controller.rb in prosperity-0.0.6

@@ -34,17 +34,22 @@
         end
       end
     end
 
     def data
-      ext_klass = Metric.extractors[params.fetch(:extractor, "interval")]
+      ext_name = params.fetch(:extractor, "interval")
+      ext_klass = Metric.extractors.fetch(ext_name) do
+        render_json_error "Could not find extractor #{ext_name} for #{@metric}. Possible values are #{Metric.extractors.keys.join(", ")}.", 404
+        return
+      end
 
       p = Prosperity::Periods::ALL.fetch(period)
       ext = ext_klass.new(@metric, option, start_time, end_time, p)
 
       json = {
         data: ext.to_a,
         key: ext.key,
+        uid: ext.uid,
         label: ext.label,
         start_time: p.actual_start_time(start_time).iso8601,
         end_time: p.actual_end_time(end_time).iso8601,
         period_milliseconds: p.duration * 1000
       }