1 files changed, 81 insertions, 0 deletions
diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb
new file mode 100644
index 0000000000..3c339ffc57
--- /dev/null
+++ b/railties/lib/rails/application/bootstrap.rb
@@ -0,0 +1,81 @@
+module Rails
+  class Application
+    module Bootstrap
+      include Initializable
+
+      initializer :load_environment_config do |app|
+        app.require_environment!
+      end
+
+      initializer :load_all_active_support do |app|
+        require "active_support/all" unless app.config.active_support.bare
+      end
+
+      # Preload all frameworks specified by the Configuration#frameworks.
+      # Used by Passenger to ensure everything's loaded before forking and
+      # to avoid autoload race conditions in JRuby.
+      initializer :preload_frameworks do |app|
+        require 'active_support/dependencies'
+        ActiveSupport::Autoload.eager_autoload! if app.config.preload_frameworks
+      end
+
+      # Initialize the logger early in the stack in case we need to log some deprecation.
+      initializer :initialize_logger do |app|
+        Rails.logger ||= app.config.logger || begin
+          path = app.config.paths.log.to_a.first
+          logger = ActiveSupport::BufferedLogger.new(path)
+          logger.level = ActiveSupport::BufferedLogger.const_get(app.config.log_level.to_s.upcase)
+          logger.auto_flushing = false if Rails.env.production?
+          logger
+        rescue StandardError => e
+          logger = ActiveSupport::BufferedLogger.new(STDERR)
+          logger.level = ActiveSupport::BufferedLogger::WARN
+          logger.warn(
+            "Rails Error: Unable to access log file. Please ensure that #{path} exists and is chmod 0666. " +
+            "The log level has been raised to WARN and the output directed to STDERR until the problem is fixed."
+          )
+          logger
+        end
+      end
+
+      # Initialize cache early in the stack so railties can make use of it.
+      initializer :initialize_cache do |app|
+        unless defined?(RAILS_CACHE)
+          silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(app.config.cache_store) }
+
+          if RAILS_CACHE.respond_to?(:middleware)
+            app.config.middleware.insert_after(:"Rack::Lock", RAILS_CACHE.middleware)
+          end
+        end
+      end
+
+      # Initialize rails subscriber on top of notifications.
+      initializer :initialize_subscriber do |app|
+        require 'active_support/notifications'
+
+        if app.config.colorize_logging == false
+          Rails::Subscriber.colorize_logging     = false
+          app.config.generators.colorize_logging = false
+        end
+
+        ActiveSupport::Notifications.subscribe do |*args|
+          Rails::Subscriber.dispatch(args)
+        end
+      end
+
+      initializer :set_clear_dependencies_hook do |app|
+        unless app.config.cache_classes
+          ActionDispatch::Callbacks.after do
+            ActiveSupport::Dependencies.clear
+          end
+        end
+      end
+
+      # Sets the dependency loading mechanism.
+      # TODO: Remove files from the $" and always use require.
+      initializer :initialize_dependency_mechanism do |app|
+        ActiveSupport::Dependencies.mechanism = app.config.cache_classes ? :require : :load
+      end
+    end
+  end
+end
+\ No newline at end of file