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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
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