module ActionController class LogSubscriber < ActiveSupport::LogSubscriber INTERNAL_PARAMS = %w(controller action format _method only_path) def start_processing(event) return unless logger.info? payload = event.payload params = payload[:params].except(*INTERNAL_PARAMS) format = payload[:format] format = format.to_s.upcase if format.is_a?(Symbol) info "Processing by #{payload[:controller]}##{payload[:action]} as #{format}" info " Parameters: #{params.inspect}" unless params.empty? end def process_action(event) return unless logger.info? payload = event.payload additions = ActionController::Base.log_process_action(payload) status = payload[:status] if status.nil? && payload[:exception].present? exception_class_name = payload[:exception].first status = ActionDispatch::ExceptionWrapper.status_code_for_exception(exception_class_name) end message = "Completed #{status} #{Rack::Utils::HTTP_STATUS_CODES[status]} in #{event.duration.round}ms" message << " (#{additions.join(" | ")})" unless additions.blank? info(message) end def halted_callback(event) info("Filter chain halted as #{event.payload[:filter].inspect} rendered or redirected") end def send_file(event) info("Sent file #{event.payload[:path]} (#{event.duration.round(1)}ms)") end def redirect_to(event) info("Redirected to #{event.payload[:location]}") end def send_data(event) info("Sent data #{event.payload[:filename]} (#{event.duration.round(1)}ms)") end def unpermitted_parameters(event) unpermitted_keys = event.payload[:keys] debug("Unpermitted parameters: #{unpermitted_keys.join(", ")}") end def deep_munge(event) message = "Value for params[:#{event.payload[:keys].join('][:')}] was set"\ "to nil, because it was one of [], [null] or [null, null, ...]."\ "Go to http://guides.rubyonrails.org/security.html#unsafe-query-generation"\ "for more information."\ debug(message) end %w(write_fragment read_fragment exist_fragment? expire_fragment expire_page write_page).each do |method| class_eval <<-METHOD, __FILE__, __LINE__ + 1 def #{method}(event) return unless logger.info? key_or_path = event.payload[:key] || event.payload[:path] human_name = #{method.to_s.humanize.inspect} info("\#{human_name} \#{key_or_path} (\#{event.duration.round(1)}ms)") end METHOD end def logger ActionController::Base.logger end end end ActionController::LogSubscriber.attach_to :action_controller