Some refactoring - used class instead of hash for the query configuration

lib/gitlab/cycle_analytics/events_fetcher.rb

@@ -3,48 +3,6 @@ module Gitlab
     class EventsFetcher
       include MetricsFetcher
 
-      EVENTS_CONFIG = {
-        issue: {
-          start_time_attrs: issue_table[:created_at],
-          end_time_attrs: [issue_metrics_table[:first_associated_with_milestone_at],
-                           issue_metrics_table[:first_added_to_board_at]],
-          projections: [issue_table[:title], issue_table[:iid], issue_table[:created_at], user_table[:name], user_table[:email]]
-        },
-        plan: {
-          start_time_attrs: issue_metrics_table[:first_associated_with_milestone_at],
-          end_time_attrs: [issue_metrics_table[:first_added_to_board_at],
-                           issue_metrics_table[:first_mentioned_in_commit_at]],
-          projections: [mr_diff_table[:st_commits].as('commits'), issue_metrics_table[:first_mentioned_in_commit_at]]
-        },
-        code: {
-          start_time_attrs: issue_metrics_table[:first_mentioned_in_commit_at],
-          end_time_attrs: mr_table[:created_at],
-          projections: [mr_table[:title], mr_table[:iid], mr_table[:created_at], user_table[:name], user_table[:email]],
-          order: mr_table[:created_at]
-        },
-        test: {
-          start_time_attrs: mr_metrics_table[:latest_build_started_at],
-          end_time_attrs: mr_metrics_table[:latest_build_finished_at],
-          projections: mr_metrics_table[:ci_commit_id],
-          order: mr_table[:created_at]
-        },
-        review: {
-          start_time_attrs: mr_table[:created_at],
-          end_time_attrs: mr_metrics_table[:merged_at],
-          projections: [mr_table[:title], mr_table[:iid], mr_table[:created_at], user_table[:name], user_table[:email]]
-        },
-        staging: {
-          start_time_attrs: mr_metrics_table[:merged_at],
-          end_time_attrs: mr_metrics_table[:first_deployed_to_production_at],
-          projections: mr_metrics_table[:ci_commit_id]
-        },
-        production: {
-          start_time_attrs: issue_table[:created_at],
-          end_time_attrs: mr_metrics_table[:first_deployed_to_production_at],
-          projections: [issue_table[:title], issue_table[:iid], issue_table[:created_at], user_table[:name], user_table[:email]]
-        },
-      }.freeze
-
       def initialize(project:, from:)
         @query = EventsQuery.new(project: project, from: from)
       end
@@ -52,11 +10,13 @@ module Gitlab
       def fetch(stage:)
         custom_query = "#{stage}_custom_query".to_sym
 
-        @query.execute(stage, EVENTS_CONFIG[stage]) do |base_query|
-          public_send(custom_query, base_query) if self.respond_to?(custom_query)
+        @query.execute(stage) do |base_query|
+          send(custom_query, base_query) if self.respond_to?(custom_query)
         end
       end
 
+      private
+
       def issue_custom_query(base_query)
         base_query.join(user_table).on(issue_table[:author_id].eq(user_table[:id]))
       end

lib/gitlab/cycle_analytics/events_query.rb

@@ -8,9 +8,9 @@ module Gitlab
         @from = from
       end
 
-      def execute(stage, config, &block)
+      def execute(stage, &block)
         @stage = stage
-        @config = config
+        @config = QueryConfig.get(stage)
         query = build_query(&block)
 
         ActiveRecord::Base.connection.execute(query.to_sql).to_a

lib/gitlab/cycle_analytics/query_config.rb

@@ -0,0 +1,89 @@
+module Gitlab
+  module CycleAnalytics
+    class QueryConfig
+      include MetricsFetcher
+
+      def self.get(*args)
+        new(*args).get
+      end
+
+      def initialize(stage)
+        @stage = stage
+      end
+
+      def get
+        send(@stage).freeze if self.respond_to?(@stage)
+      end
+
+      private
+
+      def issue
+        { start_time_attrs: issue_table[:created_at],
+          end_time_attrs: [issue_metrics_table[:first_associated_with_milestone_at],
+                           issue_metrics_table[:first_added_to_board_at]],
+          projections: [issue_table[:title],
+                        issue_table[:iid],
+                        issue_table[:created_at],
+                        user_table[:name],
+                        user_table[:email]]
+        }
+      end
+
+      def plan
+        { start_time_attrs: issue_metrics_table[:first_associated_with_milestone_at],
+          end_time_attrs: [issue_metrics_table[:first_added_to_board_at],
+                           issue_metrics_table[:first_mentioned_in_commit_at]],
+          projections: [mr_diff_table[:st_commits].as('commits'),
+                        issue_metrics_table[:first_mentioned_in_commit_at]]
+        }
+      end
+
+      def code
+        { start_time_attrs: issue_metrics_table[:first_mentioned_in_commit_at],
+          end_time_attrs: mr_table[:created_at],
+          projections: [mr_table[:title], mr_table[:iid],
+                        mr_table[:created_at],
+                        user_table[:name],
+                        user_table[:email]],
+          order: mr_table[:created_at]
+        }
+      end
+
+      def test
+        { start_time_attrs: mr_metrics_table[:latest_build_started_at],
+          end_time_attrs: mr_metrics_table[:latest_build_finished_at],
+          projections: mr_metrics_table[:ci_commit_id],
+          order: mr_table[:created_at]
+        }
+      end
+
+      def review
+        { start_time_attrs: mr_table[:created_at],
+          end_time_attrs: mr_metrics_table[:merged_at],
+          projections: [mr_table[:title], mr_table[:iid],
+                        mr_table[:created_at],
+                        user_table[:name],
+                        user_table[:email]]
+        }
+      end
+
+      def staging
+        { start_time_attrs: mr_metrics_table[:merged_at],
+          end_time_attrs: mr_metrics_table[:first_deployed_to_production_at],
+          projections: mr_metrics_table[:ci_commit_id]
+        }
+      end
+
+      def production
+        { start_time_attrs: issue_table[:created_at],
+          end_time_attrs: mr_metrics_table[:first_deployed_to_production_at],
+          projections: [issue_table[:title],
+                        issue_table[:iid],
+                        issue_table[:created_at],
+                        user_table[:name],
+                        user_table[:email]]
+        }
+      end
+    end
+  end
+end