Cleanup track_iteration_change_events feature flag

track_iteration_change_events is a developement FF that was enabled
by default and can be cleaned up.

doc/api/resource_iteration_events.md

@@ -6,14 +6,8 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Resource iteration events API **(STARTER)**
 
-> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/40850) in [GitLab Starter](https://about.gitlab.com/pricing/) 13.4
-> - It's [deployed behind a feature flag](../user/feature_flags.md), enabled by default.
-> - It's enabled on GitLab.com.
-> - It's recommended for production use.
-> - For GitLab self-managed instances, GitLab administrators can opt to [disable it](#enable-or-disable-iterations-events-tracking).
-
-NOTE: **Note:**
-This feature might not be available to you. Check the **version history** note above for details.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/229463) in [GitLab Starter](https://about.gitlab.com/pricing/) 13.4.
+> - [Feature flag removed](https://gitlab.com/gitlab-org/gitlab/-/issues/229463) in [GitLab Starter](https://about.gitlab.com/pricing/) 13.5.
 
 Resource iteration events keep track of what happens to GitLab [issues](../user/project/issues/).
 
@@ -154,22 +148,3 @@ Example response:
   "action": "remove"
 }
 ```
-
-### Enable or disable iterations events tracking **(STARTER)**
-
-Iterations events tracking is under development but ready for production use.
-It is deployed behind a feature flag that is **enabled by default**.
-[GitLab administrators with access to the GitLab Rails console](../administration/feature_flags.md)
-can opt to disable it.
-
-To enable it:
-
-```ruby
-Feature.enable(:track_iteration_change_events)
-```
-
-To disable it:
-
-```ruby
-Feature.disable(:track_iteration_change_events)
-```

ee/app/services/ee/issuable/common_system_notes_service.rb

@@ -36,11 +36,7 @@ module EE
       def handle_iteration_change
         return unless issuable.previous_changes.include?('sprint_id')
 
-        if iteration_changes_tracking_enabled?
-          ::EE::ResourceEvents::ChangeIterationService.new(issuable, current_user, old_iteration_id: issuable.sprint_id_before_last_save).execute
-        else
-          ::SystemNoteService.change_iteration(issuable, current_user, issuable.iteration)
-        end
+        ::ResourceEvents::ChangeIterationService.new(issuable, current_user, old_iteration_id: issuable.sprint_id_before_last_save).execute
       end
 
       def handle_weight_change
@@ -54,10 +50,6 @@ module EE
 
         ::SystemNoteService.change_health_status_note(issuable, issuable.project, current_user)
       end
-
-      def iteration_changes_tracking_enabled?
-        ::Feature.enabled?(:track_iteration_change_events, issuable.project, default_enabled: true)
-      end
     end
   end
 end

ee/app/services/ee/resource_events/change_iteration_service.rb

-# frozen_string_literal: true
-
-module EE
-  module ResourceEvents
-    class ChangeIterationService < ::ResourceEvents::BaseChangeTimeboxService
-      attr_reader :iteration, :old_iteration_id
-
-      def initialize(resource, user, created_at: Time.current, old_iteration_id:)
-        super(resource, user, created_at: created_at)
-
-        @iteration = resource&.iteration
-        @old_iteration_id = old_iteration_id
-      end
-
-      private
-
-      def create_event
-        ResourceIterationEvent.create(build_resource_args)
-      end
-
-      def build_resource_args
-        action = iteration.blank? ? :remove : :add
-
-        super.merge({
-          action: ResourceTimeboxEvent.actions[action],
-          iteration_id: iteration.blank? ? old_iteration_id : iteration&.id
-        })
-      end
-    end
-  end
-end

ee/app/services/ee/system_note_service.rb

@@ -36,10 +36,6 @@ module EE
       epics_service(epic, user).issue_epic_change(issue)
     end
 
-    def change_iteration(noteable, author, iteration)
-      issuables_service(noteable, noteable.project, author).change_iteration(iteration)
-    end
-
     # Called when the health_stauts of an Issue is changed
     #
     # noteable   - Noteable object

ee/app/services/ee/system_notes/issuables_service.rb

@@ -31,23 +31,6 @@ module EE
 
         create_note(NoteSummary.new(noteable, project, author, body, action: 'published'))
       end
-
-      # Called when the iteration of a Noteable is changed
-      #
-      # iteration - Iteration being assigned, or nil
-      #
-      # Example Note text:
-      #
-      #   "removed iteration"
-      #
-      #   "changed iteration to 7.11"
-      #
-      # Returns the created Note object
-      def change_iteration(iteration)
-        body = iteration.nil? ? 'removed iteration' : "changed iteration to #{iteration.to_reference(project, format: :id)}"
-
-        create_note(NoteSummary.new(noteable, project, author, body, action: 'iteration'))
-      end
     end
   end
 end

ee/app/services/resource_events/change_iteration_service.rb

+# frozen_string_literal: true
+
+module ResourceEvents
+  class ChangeIterationService < ::ResourceEvents::BaseChangeTimeboxService
+    attr_reader :iteration, :old_iteration_id
+
+    def initialize(resource, user, created_at: Time.current, old_iteration_id:)
+      super(resource, user, created_at: created_at)
+
+      @iteration = resource&.iteration
+      @old_iteration_id = old_iteration_id
+    end
+
+    private
+
+    def create_event
+      ResourceIterationEvent.create(build_resource_args)
+    end
+
+    def build_resource_args
+      action = iteration.blank? ? :remove : :add
+
+      super.merge({
+                    action: ResourceTimeboxEvent.actions[action],
+                    iteration_id: iteration.blank? ? old_iteration_id : iteration&.id
+                  })
+    end
+  end
+end

ee/config/feature_flags/development/track_iteration_change_events.yml

----
-name: track_iteration_change_events
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/37620
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/229463
-group: group::project management
-type: development
-default_enabled: true

ee/spec/services/ee/issuable/common_system_notes_service_spec.rb

@@ -23,22 +23,6 @@ RSpec.describe Issuable::CommonSystemNotesService do
         expect(event.iteration.id).to eq iteration.id
         expect(event.user_id).to eq user.id
       end
-
-      context 'when resource iteration event tracking is disabled' do
-        before do
-          stub_feature_flags(track_iteration_change_events: false)
-        end
-
-        it 'does not created a resource weight event' do
-          expect { subject }.not_to change { ResourceIterationEvent.count }
-        end
-
-        it 'does create a system note' do
-          expect { subject }.to change { Note.count }.from(0).to(1)
-
-          expect(Note.first.note).to eq("changed iteration to #{iteration.to_reference(issuable.resource_parent, format: :id)}")
-        end
-      end
     end
   end
 

ee/spec/services/ee/issues/update_service_spec.rb

@@ -119,68 +119,30 @@ RSpec.describe Issues::UpdateService do
         group.add_maintainer(user)
       end
 
-      context 'when track_iteration_change_events is disabled' do
-        before do
-          stub_feature_flags(track_iteration_change_events: false)
-        end
-
-        RSpec.shared_examples 'creates iteration system note' do
-          it 'creates a system note' do
-            expect do
-              update_issue(iteration: iteration)
-            end.to change { Note.system.count }.by(1)
-          end
-
-          it 'does not create a iteration change event' do
-            expect do
-              update_issue(iteration: iteration)
-            end.not_to change { ResourceIterationEvent.count }
-          end
-        end
-
-        context 'group iterations' do
-          let(:iteration) { create(:iteration, group: group) }
-
-          it_behaves_like 'creates iteration system note'
+      RSpec.shared_examples 'creates iteration resource event' do
+        it 'creates a system note' do
+          expect do
+            update_issue(iteration: iteration)
+          end.not_to change { Note.system.count }
         end
 
-        context 'project iterations' do
-          let(:iteration) { create(:iteration, :skip_project_validation, project: project) }
-
-          it_behaves_like 'creates iteration system note'
+        it 'does not create a iteration change event' do
+          expect do
+            update_issue(iteration: iteration)
+          end.to change { ResourceIterationEvent.count }.by(1)
         end
       end
 
-      context 'when track_iteration_change_events is enabled' do
-        before do
-          stub_feature_flags(track_iteration_change_events: true)
-        end
-
-        RSpec.shared_examples 'creates iteration resource event' do
-          it 'creates a system note' do
-            expect do
-              update_issue(iteration: iteration)
-            end.not_to change { Note.system.count }
-          end
-
-          it 'does not create a iteration change event' do
-            expect do
-              update_issue(iteration: iteration)
-            end.to change { ResourceIterationEvent.count }.by(1)
-          end
-        end
-
-        context 'group iterations' do
-          let(:iteration) { create(:iteration, group: group) }
+      context 'group iterations' do
+        let(:iteration) { create(:iteration, group: group) }
 
-          it_behaves_like 'creates iteration resource event'
-        end
+        it_behaves_like 'creates iteration resource event'
+      end
 
-        context 'project iterations' do
-          let(:iteration) { create(:iteration, :skip_project_validation, project: project) }
+      context 'project iterations' do
+        let(:iteration) { create(:iteration, :skip_project_validation, project: project) }
 
-          it_behaves_like 'creates iteration resource event'
-        end
+        it_behaves_like 'creates iteration resource event'
       end
     end
 

ee/spec/services/ee/resource_events/change_iteration_service_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe EE::ResourceEvents::ChangeIterationService do
+RSpec.describe ResourceEvents::ChangeIterationService do
   let_it_be(:timebox) { create(:iteration) }
 
   let(:created_at_time) { Time.utc(2019, 12, 30) }

ee/spec/services/ee/system_notes/issuables_service_spec.rb

@@ -56,58 +56,4 @@ RSpec.describe ::SystemNotes::IssuablesService do
       expect(subject.note).to eq 'published this issue to the status page'
     end
   end
-
-  describe '#change_iteration' do
-    subject { service.change_iteration(iteration) }
-
-    context 'for a project iteration' do
-      let(:iteration) { create(:iteration, :skip_project_validation, project: project) }
-
-      it_behaves_like 'a system note' do
-        let(:action) { 'iteration' }
-      end
-
-      it_behaves_like 'a note with overridable created_at'
-
-      context 'when iteration added' do
-        it 'sets the note text' do
-          reference = iteration.to_reference(format: :id)
-
-          expect(subject.note).to eq "changed iteration to #{reference}"
-        end
-      end
-
-      context 'when iteration removed' do
-        let(:iteration) { nil }
-
-        it 'sets the note text' do
-          expect(subject.note).to eq 'removed iteration'
-        end
-      end
-    end
-
-    context 'for a group iteration' do
-      let(:iteration) { create(:iteration, group: group) }
-
-      it_behaves_like 'a system note' do
-        let(:action) { 'iteration' }
-      end
-
-      it_behaves_like 'a note with overridable created_at'
-
-      context 'when iteration added' do
-        it 'sets the note text to use the iteration id' do
-          expect(subject.note).to eq "changed iteration to #{iteration.to_reference(format: :id)}"
-        end
-      end
-
-      context 'when iteration removed' do
-        let(:iteration) { nil }
-
-        it 'sets the note text' do
-          expect(subject.note).to eq 'removed iteration'
-        end
-      end
-    end
-  end
 end

ee/spec/services/system_note_service_spec.rb

@@ -161,14 +161,4 @@ RSpec.describe SystemNoteService do
       described_class.publish_issue_to_status_page(noteable, project, author)
     end
   end
-
-  describe '.change_iteration' do
-    it 'calls IssuablesService' do
-      expect_next_instance_of(::SystemNotes::IssuablesService) do |service|
-        expect(service).to receive(:change_iteration)
-      end
-
-      described_class.change_iteration(noteable, author, nil)
-    end
-  end
 end