[EE] Reduce diff with CE in Search::GlobalService

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/services/search/global_service.rb

@@ -2,6 +2,8 @@
 
 module Search
   class GlobalService
+    include Gitlab::Utils::StrongMemoize
+
     attr_accessor :current_user, :params
     attr_reader :default_project_filter
 
@@ -11,42 +13,26 @@ module Search
     end
 
     def execute
-      if Gitlab::CurrentSettings.elasticsearch_search?
-        Gitlab::Elastic::SearchResults.new(current_user, params[:search], elastic_projects, elastic_global)
-      else
-        Gitlab::SearchResults.new(current_user, projects, params[:search],
-                                  default_project_filter: default_project_filter)
-      end
+      Gitlab::SearchResults.new(current_user, projects, params[:search],
+                                default_project_filter: default_project_filter)
     end
 
     def projects
       @projects ||= ProjectsFinder.new(current_user: current_user).execute
     end
 
-    # rubocop: disable CodeReuse/ActiveRecord
-    def elastic_projects
-      @elastic_projects ||=
-        if current_user&.full_private_access?
-          :any
-        elsif current_user
-          current_user.authorized_projects.pluck(:id)
-        else
-          []
-        end
-    end
-    # rubocop: enable CodeReuse/ActiveRecord
-
-    def elastic_global
-      true
+    def allowed_scopes
+      strong_memoize(:allowed_scopes) do
+        %w[issues merge_requests milestones]
+      end
     end
 
     def scope
-      @scope ||= begin
-        allowed_scopes = %w[issues merge_requests milestones]
-        allowed_scopes += %w[wiki_blobs blobs commits] if Gitlab::CurrentSettings.elasticsearch_search?
-
-        allowed_scopes.delete(params[:scope]) { 'projects' }
+      strong_memoize(:scope) do
+        allowed_scopes.include?(params[:scope]) ? params[:scope] : 'projects'
       end
     end
   end
 end
+
+Search::GlobalService.prepend(EE::Search::GlobalService)

ee/app/services/ee/search/global_service.rb

+# frozen_string_literal: true
+
+module EE
+  module Search
+    module GlobalService
+      extend ::Gitlab::Utils::Override
+      include ::Gitlab::Utils::StrongMemoize
+
+      override :execute
+      def execute
+        if ::Gitlab::CurrentSettings.elasticsearch_search?
+          ::Gitlab::Elastic::SearchResults.new(current_user, params[:search], elastic_projects, elastic_global)
+        else
+          super
+        end
+      end
+
+      def elastic_projects
+        strong_memoize(:elastic_projects) do
+          if current_user&.full_private_access?
+            :any
+          elsif current_user
+            current_user.authorized_projects.pluck(:id) # rubocop: disable CodeReuse/ActiveRecord
+          else
+            []
+          end
+        end
+      end
+
+      def elastic_global
+        true
+      end
+
+      override :allowed_scopes
+      def allowed_scopes
+        strong_memoize(:ee_allowed_scopes) do
+          super.tap do |ce_scopes|
+            ce_scopes.concat(%w[wiki_blobs blobs commits]) if ::Gitlab::CurrentSettings.elasticsearch_search?
+          end
+        end
+      end
+    end
+  end
+end