Rate selection using union of all tags in reporting period

app/models/chargeback/consumption_with_rollups.rb

@@ -1,7 +1,7 @@
 class Chargeback
   class ConsumptionWithRollups < Consumption
     delegate :timestamp, :resource, :resource_id, :resource_name, :resource_type, :parent_ems,
-             :hash_features_affecting_rate, :tag_list_with_prefix, :parents_determining_rate,
+             :parents_determining_rate,
              :to => :first_metric_rollup_record
 
     def initialize(metric_rollup_records, start_time, end_time)
@@ -10,7 +10,7 @@ def initialize(metric_rollup_records, start_time, end_time)
     end
 
     def tag_names
-      first_metric_rollup_record.tag_names.split('|')
+      @tag_names ||= @rollups.map { |m| m.tag_names.split('|') }.flatten.uniq
     end
 
     def max(metric)
@@ -30,6 +30,23 @@ def chargeback_fields_present
       @chargeback_fields_present ||= @rollups.count(&:chargeback_fields_present?)
     end
 
+    def tag_list_with_prefix
+      @tag_list_with_prefix ||= @rollups.map { |m| m.tag_list_with_prefix }.flatten.uniq
+    end
+
+    # def hash_features_affecting_rate
+    #   @rollups.map { |m| m.hash_features_affecting_rate.split("|") }.flatten.uniq.join("|")
+    # end
+
+    def hash_features_affecting_rate
+      @hash_features_affecting_rate ||= begin
+        tags = tag_names.reject { |n| n.starts_with?('folder_path_') }.sort.join('|')
+        keys = [tags] + first_metric_rollup_record.resource_parents.map(&:id)
+        keys += [first_metric_rollup_record.resource.container_image, timestamp] if resource_type == Container.name
+        keys.join('_')
+      end
+    end
+
     private
 
     def born_at