1 files changed, 55 insertions, 0 deletions
diff --git a/app/services/feature_flags/base_service.rb b/app/services/feature_flags/base_service.rb
new file mode 100644
index 00000000000..9b27df90992
--- /dev/null
+++ b/app/services/feature_flags/base_service.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module FeatureFlags
+  class BaseService < ::BaseService
+    include Gitlab::Utils::StrongMemoize
+
+    AUDITABLE_ATTRIBUTES = %w(name description active).freeze
+
+    protected
+
+    def audit_event(feature_flag)
+      message = audit_message(feature_flag)
+
+      return if message.blank?
+
+      details =
+        {
+          custom_message: message,
+          target_id: feature_flag.id,
+          target_type: feature_flag.class.name,
+          target_details: feature_flag.name
+        }
+
+      ::AuditEventService.new(
+        current_user,
+        feature_flag.project,
+        details
+      )
+    end
+
+    def save_audit_event(audit_event)
+      return unless audit_event
+
+      audit_event.security_event
+    end
+
+    def created_scope_message(scope)
+      "Created rule <strong>#{scope.environment_scope}</strong> "\
+      "and set it as <strong>#{scope.active ? "active" : "inactive"}</strong> "\
+      "with strategies <strong>#{scope.strategies}</strong>."
+    end
+
+    def feature_flag_by_name
+      strong_memoize(:feature_flag_by_name) do
+        project.operations_feature_flags.find_by_name(params[:name])
+      end
+    end
+
+    def feature_flag_scope_by_environment_scope
+      strong_memoize(:feature_flag_scope_by_environment_scope) do
+        feature_flag_by_name.scopes.find_by_environment_scope(params[:environment_scope])
+      end
+    end
+  end
+end