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-rw-r--r--railties/lib/rails/application/default_middleware_stack.rb101
1 files changed, 101 insertions, 0 deletions
diff --git a/railties/lib/rails/application/default_middleware_stack.rb b/railties/lib/rails/application/default_middleware_stack.rb
new file mode 100644
index 0000000000..370c906086
--- /dev/null
+++ b/railties/lib/rails/application/default_middleware_stack.rb
@@ -0,0 +1,101 @@
+module Rails
+ class Application
+ class DefaultMiddlewareStack
+ attr_reader :config, :paths, :app
+
+ def initialize(app, config, paths)
+ @app = app
+ @config = config
+ @paths = paths
+ end
+
+ def build_stack
+ ActionDispatch::MiddlewareStack.new.tap do |middleware|
+ if rack_cache = load_rack_cache
+ require "action_dispatch/http/rack_cache"
+ middleware.use ::Rack::Cache, rack_cache
+ end
+
+ if config.force_ssl
+ middleware.use ::ActionDispatch::SSL, config.ssl_options
+ end
+
+ if config.action_dispatch.x_sendfile_header.present?
+ middleware.use ::Rack::Sendfile, config.action_dispatch.x_sendfile_header
+ end
+
+ if config.serve_static_assets
+ middleware.use ::ActionDispatch::Static, paths["public"].first, config.static_cache_control
+ end
+
+ middleware.use ::Rack::Lock unless allow_concurrency?
+ middleware.use ::Rack::Runtime
+ middleware.use ::Rack::MethodOverride
+ middleware.use ::ActionDispatch::RequestId
+
+ # Must come after Rack::MethodOverride to properly log overridden methods
+ middleware.use ::Rails::Rack::Logger, config.log_tags
+ middleware.use ::ActionDispatch::ShowExceptions, show_exceptions_app
+ middleware.use ::ActionDispatch::DebugExceptions, app
+ middleware.use ::ActionDispatch::RemoteIp, config.action_dispatch.ip_spoofing_check, config.action_dispatch.trusted_proxies
+
+ unless config.cache_classes
+ middleware.use ::ActionDispatch::Reloader, lambda { reload_dependencies? }
+ end
+
+ middleware.use ::ActionDispatch::Callbacks
+ middleware.use ::ActionDispatch::Cookies
+
+ if config.session_store
+ if config.force_ssl && !config.session_options.key?(:secure)
+ config.session_options[:secure] = true
+ end
+ middleware.use config.session_store, config.session_options
+ middleware.use ::ActionDispatch::Flash
+ end
+
+ middleware.use ::ActionDispatch::ParamsParser
+ middleware.use ::Rack::Head
+ middleware.use ::Rack::ConditionalGet
+ middleware.use ::Rack::ETag, "no-cache"
+ end
+ end
+
+ private
+
+ def reload_dependencies?
+ config.reload_classes_only_on_change != true || app.reloaders.map(&:updated?).any?
+ end
+
+ def allow_concurrency?
+ config.allow_concurrency.nil? ? config.cache_classes : config.allow_concurrency
+ end
+
+ def load_rack_cache
+ rack_cache = config.action_dispatch.rack_cache
+ return unless rack_cache
+
+ begin
+ require 'rack/cache'
+ rescue LoadError => error
+ error.message << ' Be sure to add rack-cache to your Gemfile'
+ raise
+ end
+
+ if rack_cache == true
+ {
+ metastore: "rails:/",
+ entitystore: "rails:/",
+ verbose: false
+ }
+ else
+ rack_cache
+ end
+ end
+
+ def show_exceptions_app
+ config.exceptions_app || ActionDispatch::PublicExceptions.new(Rails.public_path)
+ end
+ end
+ end
+end