3 files changed, 21 insertions, 2 deletions
diff --git a/railties/lib/rails/engine/commands.rb b/railties/lib/rails/engine/commands.rb
index b9ef63243a..5267b23d6c 100644
--- a/railties/lib/rails/engine/commands.rb
+++ b/railties/lib/rails/engine/commands.rb
@@ -4,4 +4,4 @@ unless defined?(APP_PATH)
   end
 end
 
-require "rails/commands"
+require_relative "../commands"
diff --git a/railties/lib/rails/engine/configuration.rb b/railties/lib/rails/engine/configuration.rb
index 0c40173c38..9c7e2942bc 100644
--- a/railties/lib/rails/engine/configuration.rb
+++ b/railties/lib/rails/engine/configuration.rb
@@ -1,4 +1,4 @@
-require "rails/railtie/configuration"
+require_relative "../railtie/configuration"
 
 module Rails
   class Engine
diff --git a/railties/lib/rails/engine/updater.rb b/railties/lib/rails/engine/updater.rb
new file mode 100644
index 0000000000..af2bff1e59
--- /dev/null
+++ b/railties/lib/rails/engine/updater.rb
@@ -0,0 +1,19 @@
+require_relative "../generators"
+require_relative "../generators/rails/plugin/plugin_generator"
+
+module Rails
+  class Engine
+    class Updater
+      class << self
+        def generator
+          @generator ||= Rails::Generators::PluginGenerator.new ["plugin"],
+            { engine: true }, destination_root: ENGINE_ROOT
+        end
+
+        def run(action)
+          generator.send(action)
+        end
+      end
+    end
+  end
+end