Merge pull request #14224 from kbrock/widget_1

Speed up widget generation
(cherry picked from commit 15f7ba4)

https://bugzilla.redhat.com/show_bug.cgi?id=1434150

app/models/metric/helper.rb

@@ -120,7 +120,11 @@ def self.sanitize_start_end_time(interval, interval_name, start_time, end_time)
   end
 
   def self.remove_duplicate_timestamps(recs)
-    return recs if recs.empty? || !recs.all? { |r| r.kind_of?(Metric) || r.kind_of?(MetricRollup) }
+    if recs.respond_to?(:klass) # active record relation
+      return recs unless recs.klass.kind_of?(Metric) || recs.klass.kind_of?(MetricRollup)
+    elsif recs.empty? || !recs.all? { |r| r.kind_of?(Metric) || r.kind_of?(MetricRollup) }
+      return recs 
+    end
 
     recs = recs.sort_by { |r| r.resource_type + r.resource_id.to_s + r.timestamp.iso8601 }