Remove track_issue_weight_change_events flag

This feature flag has been enabled by default for a while now

.rubocop_todo.yml

@@ -773,7 +773,6 @@ Rails/SaveBang:
     - 'ee/spec/services/ee/merge_requests/update_service_spec.rb'
     - 'ee/spec/services/ee/notes/quick_actions_service_spec.rb'
     - 'ee/spec/services/ee/notification_service_spec.rb'
-    - 'ee/spec/services/ee/resource_events/change_weight_service_spec.rb'
     - 'ee/spec/services/epic_links/create_service_spec.rb'
     - 'ee/spec/services/epics/close_service_spec.rb'
     - 'ee/spec/services/epics/issue_promote_service_spec.rb'

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

@@ -46,11 +46,7 @@ module EE
       def handle_weight_change
         return unless issuable.previous_changes.include?('weight')
 
-        if weight_changes_tracking_enabled?
-          EE::ResourceEvents::ChangeWeightService.new([issuable], current_user, Time.current).execute
-        else
-          ::SystemNoteService.change_weight_note(issuable, issuable.project, current_user)
-        end
+        ::ResourceEvents::ChangeWeightService.new([issuable], current_user, Time.current).execute
       end
 
       def handle_health_status_change
@@ -59,10 +55,6 @@ module EE
         ::SystemNoteService.change_health_status_note(issuable, issuable.project, current_user)
       end
 
-      def weight_changes_tracking_enabled?
-        !issuable.is_a?(Epic) && ::Feature.enabled?(:track_issue_weight_change_events, issuable.project, default_enabled: true)
-      end
-
       def iteration_changes_tracking_enabled?
         ::Feature.enabled?(:track_iteration_change_events, issuable.project, default_enabled: true)
       end

ee/app/services/ee/system_note_service.rb

@@ -40,23 +40,6 @@ module EE
       issuables_service(noteable, noteable.project, author).change_iteration(iteration)
     end
 
-    # Called when the weight of a Noteable is changed
-    #
-    # noteable   - Noteable object
-    # project    - Project owning noteable
-    # author     - User performing the change
-    #
-    # Example Note text:
-    #
-    #   "removed the weight"
-    #
-    #   "changed weight to 4"
-    #
-    # Returns the created Note object
-    def change_weight_note(noteable, project, author)
-      issuables_service(noteable, project, author).change_weight_note
-    end
-
     # Called when the health_stauts of an Issue is changed
     #
     # noteable   - Noteable object

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

@@ -2,21 +2,6 @@
 module EE
   module SystemNotes
     module IssuablesService
-      # Called when the weight of a Noteable is changed
-      #
-      # Example Note text:
-      #
-      #   "removed the weight"
-      #
-      #   "changed weight to 4"
-      #
-      # Returns the created Note object
-      def change_weight_note
-        body = noteable.weight ? "changed weight to **#{noteable.weight}**" : 'removed the weight'
-
-        create_note(NoteSummary.new(noteable, project, author, body, action: 'weight'))
-      end
-
       # Called when the health_status of an Issue is changed
       #
       # Example Note text:

ee/app/services/resource_events/change_weight_service.rb

+# frozen_string_literal: true
+
+module ResourceEvents
+  class ChangeWeightService
+    attr_reader :resources, :user, :event_created_at
+
+    def initialize(resources, user, created_at)
+      @resources = resources
+      @user = user
+      @event_created_at = created_at
+    end
+
+    def execute
+      unless resource_weight_changes.empty?
+        ::Gitlab::Database.bulk_insert(ResourceWeightEvent.table_name, resource_weight_changes) # rubocop:disable Gitlab/BulkInsert
+        resources.each(&:expire_note_etag_cache)
+      end
+    end
+
+    private
+
+    def resource_weight_changes
+      @weight_changes ||= resources.map do |resource|
+        changes = []
+        base_data = { user_id: user.id, issue_id: resource.id }
+
+        changes << base_data.merge({ weight: resource.previous_weight, created_at: resource.previous_updated_at }) if resource.first_weight_event?
+        changes << base_data.merge({ weight: resource.weight, created_at: event_created_at })
+      end.flatten
+    end
+  end
+end

ee/spec/requests/api/issues_spec.rb

@@ -423,24 +423,6 @@ RSpec.describe API::Issues, :mailer do
         expect(issue.reload.read_attribute(:weight)).to be_nil
       end
     end
-
-    context 'when issue weight tracking feature flag is not active' do
-      before do
-        stub_feature_flags(track_issue_weight_change_events: false)
-      end
-
-      it 'does not create a ResourceWeightEvent' do
-        expect do
-          put api("/projects/#{project.id}/issues/#{issue.iid}", user), params: { weight: 9 }
-        end.not_to change { ResourceWeightEvent.count }
-      end
-
-      it 'creates a system note' do
-        expect do
-          put api("/projects/#{project.id}/issues/#{issue.iid}", user), params: { weight: 9 }
-        end.to change { Note.count }.by(1)
-      end
-    end
   end
 
   describe 'PUT /projects/:id/issues/:issue_id to update epic' do

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

@@ -115,34 +115,12 @@ RSpec.describe Issuable::CommonSystemNotesService do
       issuable.update(weight: 5, health_status: 'at_risk')
     end
 
-    context 'when resource weight event tracking is enabled' do
-      before do
-        stub_feature_flags(track_issue_weight_change_events: true)
-      end
-
-      it 'creates a resource weight event' do
-        expect { subject }.to change { ResourceWeightEvent.count }
-      end
-
-      it 'does not create a system note' do
-        expect { subject }.not_to change { Note.count }
-      end
+    it 'creates a resource weight event' do
+      expect { subject }.to change { ResourceWeightEvent.count }
     end
 
-    context 'when resource weight event tracking is disabled' do
-      before do
-        stub_feature_flags(track_issue_weight_change_events: false)
-      end
-
-      it 'does not created a resource weight event' do
-        expect { subject }.not_to change { ResourceWeightEvent.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 weight to **5**')
-      end
+    it 'does not create a system note' do
+      expect { subject }.not_to change { Note.count }
     end
 
     it_behaves_like 'issuable iteration changed'

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

@@ -13,36 +13,6 @@ RSpec.describe ::SystemNotes::IssuablesService do
 
   let(:service) { described_class.new(noteable: noteable, project: project, author: author) }
 
-  describe '#change_weight_note' do
-    context 'when weight changed' do
-      let(:noteable) { create(:issue, project: project, title: 'Lorem ipsum', weight: 4) }
-
-      subject { service.change_weight_note }
-
-      it_behaves_like 'a system note' do
-        let(:action) { 'weight' }
-      end
-
-      it 'sets the note text' do
-        expect(subject.note).to eq "changed weight to **4**"
-      end
-    end
-
-    context 'when weight removed' do
-      let(:noteable) { create(:issue, project: project, title: 'Lorem ipsum', weight: nil) }
-
-      subject { service.change_weight_note }
-
-      it_behaves_like 'a system note' do
-        let(:action) { 'weight' }
-      end
-
-      it 'sets the note text' do
-        expect(subject.note).to eq 'removed the weight'
-      end
-    end
-  end
-
   describe '#change_health_status_note' do
     context 'when health_status changed' do
       let(:noteable) { create(:issue, project: project, title: 'Lorem ipsum', health_status: 'at_risk') }

ee/spec/services/ee/resource_events/change_weight_service_spec.rb → ee/spec/services/resource_events/change_weight_service_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe EE::ResourceEvents::ChangeWeightService do
+RSpec.describe ResourceEvents::ChangeWeightService do
   let_it_be(:user) { create(:user) }
 
   let(:issue) { create(:issue, weight: 3) }
@@ -35,7 +35,7 @@ RSpec.describe EE::ResourceEvents::ChangeWeightService do
   context 'when there is no existing weight event record' do
     before do
       ResourceWeightEvent.delete_all
-      issue.update(weight: 5, updated_at: 10.seconds.ago)
+      issue.update!(weight: 5, updated_at: 10.seconds.ago)
     end
 
     it 'creates the expected event records' do

ee/spec/services/system_note_service_spec.rb

@@ -14,16 +14,6 @@ RSpec.describe SystemNoteService do
   let_it_be(:issue)    { noteable }
   let_it_be(:epic)     { create(:epic, group: group) }
 
-  describe '.change_weight_note' do
-    it 'calls IssuableService' do
-      expect_next_instance_of(::SystemNotes::IssuablesService) do |service|
-        expect(service).to receive(:change_weight_note)
-      end
-
-      described_class.change_weight_note(noteable, project, author)
-    end
-  end
-
   describe '.change_health_status_note' do
     it 'calls IssuableService' do
       expect_next_instance_of(::SystemNotes::IssuablesService) do |service|