fix issue with commits and also updated routes

app/controllers/projects/cycle_analytics/events_controller.rb

-class Projects::CycleAnalytics::EventsController < Projects::ApplicationController
+module Projects
+  module CycleAnalytics
+class EventsController < Projects::ApplicationController
   include CycleAnalyticsParams
 
   before_action :authorize_read_cycle_analytics!
@@ -60,4 +62,6 @@ class Projects::CycleAnalytics::EventsController < Projects::ApplicationControll
   def authorize_builds!
     return access_denied! unless current_user.can?(:read_build, project)
   end
+end
+  end
 end

config/routes/project.rb

@@ -154,7 +154,7 @@ resources :namespaces, path: '/', constraints: { id: /[a-zA-Z.0-9_\-]+/ }, only:
       resource :cycle_analytics, only: [:show]
 
       namespace :cycle_analytics do
-        scope :events, controller: '/projects/cycle_analytics/events' do
+        scope :events, controller: 'events' do
           get :issue
           get :plan
           get :code

lib/gitlab/cycle_analytics/events.rb

@@ -12,9 +12,11 @@ module Gitlab
 
       def plan_events
         @fetcher.fetch(stage: :plan).map do |event|
-          commit = first_time_reference_commit(event.delete('commits'), event)
+          st_commit = first_time_reference_commit(event.delete('commits'), event)
 
-          AnalyticsCommitSerializer.new(project: @project, total_time: event['total_time']).represent(commit).as_json
+          next unless st_commit
+
+          serialize_commit(event, st_commit)
         end
       end
 
@@ -53,11 +55,17 @@ module Gitlab
       end
 
       def first_time_reference_commit(commits, event)
-        st_commit = YAML.load(commits).detect do |commit|
-          commit['created_at'] == event['first_mentioned_in_commit_at']
+        YAML.load(commits).find do |commit|
+          next unless commit[:committed_date] && event['first_mentioned_in_commit_at']
+
+          commit[:committed_date].to_i == DateTime.parse(event['first_mentioned_in_commit_at']).to_i
         end
+      end
+
+      def serialize_commit(event, st_commit)
+        commit = Commit.new(Gitlab::Git::Commit.new(st_commit), @project)
 
-        Commit.new(Gitlab::Git::Commit.new(st_commit), @project)
+        AnalyticsCommitSerializer.new(project: @project, total_time: event['total_time']).represent(commit).as_json
       end
 
       def interval_in_words(diff)

lib/gitlab/cycle_analytics/query_config.rb

@@ -33,7 +33,8 @@ module Gitlab
           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')]
+          projections: [mr_diff_table[:st_commits].as('commits'),
+                        issue_metrics_table[:first_mentioned_in_commit_at]]
         }
       end
 

spec/requests/projects/cycle_analytics_events_spec.rb

@@ -142,5 +142,7 @@ describe 'cycle analytics events' do
     create(:ci_build, pipeline: pipeline, status: :success, author: user)
 
     merge_merge_requests_closing_issue(issue)
+
+    Issue::Metrics.update_all(first_mentioned_in_commit_at: mr.commits.last.committed_date)
   end
 end