Add approval rule create/update/delete events

Adds approval rule CUD tracking events.

config/feature_flags/development/usage_data_i_code_review_user_approval_rule_added.yml

+---
+name: usage_data_i_code_review_user_approval_rule_added
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/issues/320966
+rollout_issue_url:
+milestone: '13.9'
+type: development
+group: group::code review
+default_enabled: true

config/feature_flags/development/usage_data_i_code_review_user_approval_rule_deleted.yml

+---
+name: usage_data_i_code_review_user_approval_rule_deleted
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/issues/320966
+rollout_issue_url:
+milestone: '13.9'
+type: development
+group: group::code review
+default_enabled: true

config/feature_flags/development/usage_data_i_code_review_user_approval_rule_edited.yml

+---
+name: usage_data_i_code_review_user_approval_rule_edited
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/issues/320966
+rollout_issue_url:
+milestone: '13.9'
+type: development
+group: group::code review
+default_enabled: true

lib/gitlab/usage_data_counters/known_events/code_review_events.yml

@@ -124,3 +124,18 @@
   category: code_review
   aggregation: weekly
   feature_flag: usage_data_i_code_review_user_review_requested
+- name: i_code_review_user_approval_rule_added
+  redis_slot: code_review
+  category: code_review
+  aggregation: weekly
+  feature_flag: usage_data_i_code_review_user_approval_rule_added
+- name: i_code_review_user_approval_rule_deleted
+  redis_slot: code_review
+  category: code_review
+  aggregation: weekly
+  feature_flag: usage_data_i_code_review_user_approval_rule_deleted
+- name: i_code_review_user_approval_rule_edited
+  redis_slot: code_review
+  category: code_review
+  aggregation: weekly
+  feature_flag: usage_data_i_code_review_user_approval_rule_edited

lib/gitlab/usage_data_counters/merge_request_activity_unique_counter.rb

@@ -26,6 +26,9 @@ module Gitlab
       MR_UNRESOLVE_THREAD_ACTION = 'i_code_review_user_unresolve_thread'
       MR_ASSIGNED_USERS_ACTION = 'i_code_review_user_assigned'
       MR_REVIEW_REQUESTED_USERS_ACTION = 'i_code_review_user_review_requested'
+      MR_APPROVAL_RULE_ADDED_USERS_ACTION = 'i_code_review_user_approval_rule_added'
+      MR_APPROVAL_RULE_EDITED_USERS_ACTION = 'i_code_review_user_approval_rule_edited'
+      MR_APPROVAL_RULE_DELETED_USERS_ACTION = 'i_code_review_user_approval_rule_deleted'
       MR_EDIT_MR_TITLE_ACTION = 'i_code_review_edit_mr_title'
       MR_EDIT_MR_DESC_ACTION = 'i_code_review_edit_mr_desc'
 
@@ -118,6 +121,18 @@ module Gitlab
           track_unique_action_by_user(MR_EDIT_MR_DESC_ACTION, user)
         end
 
+        def track_approval_rule_added_action(user:)
+          track_unique_action_by_user(MR_APPROVAL_RULE_ADDED_USERS_ACTION, user)
+        end
+
+        def track_approval_rule_edited_action(user:)
+          track_unique_action_by_user(MR_APPROVAL_RULE_EDITED_USERS_ACTION, user)
+        end
+
+        def track_approval_rule_deleted_action(user:)
+          track_unique_action_by_user(MR_APPROVAL_RULE_DELETED_USERS_ACTION, user)
+        end
+
         private
 
         def track_unique_action_by_merge_request(action, merge_request)

spec/lib/gitlab/usage_data_counters/merge_request_activity_unique_counter_spec.rb

@@ -228,4 +228,28 @@ RSpec.describe Gitlab::UsageDataCounters::MergeRequestActivityUniqueCounter, :cl
       let(:action) { described_class::MR_REVIEW_REQUESTED_USERS_ACTION }
     end
   end
+
+  describe '.track_approval_rule_added_action' do
+    subject { described_class.track_approval_rule_added_action(user: user) }
+
+    it_behaves_like 'a tracked merge request unique event' do
+      let(:action) { described_class::MR_APPROVAL_RULE_ADDED_USERS_ACTION }
+    end
+  end
+
+  describe '.track_approval_rule_edited_action' do
+    subject { described_class.track_approval_rule_edited_action(user: user) }
+
+    it_behaves_like 'a tracked merge request unique event' do
+      let(:action) { described_class::MR_APPROVAL_RULE_EDITED_USERS_ACTION }
+    end
+  end
+
+  describe '.track_approval_rule_deleted_action' do
+    subject { described_class.track_approval_rule_deleted_action(user: user) }
+
+    it_behaves_like 'a tracked merge request unique event' do
+      let(:action) { described_class::MR_APPROVAL_RULE_DELETED_USERS_ACTION }
+    end
+  end
 end