call_app

# File railties/lib/rails/rack/logger.rb, line 28
      def call_app(request, env)
        # Put some space between requests in development logs.
        if development?
          logger.debug ''
          logger.debug ''
        end

        instrumenter = ActiveSupport::Notifications.instrumenter
        instrumenter.start 'request.action_dispatch', request: request
        logger.info started_request_message(request)
        resp = @app.call(env)
        resp[2] = ::Rack::BodyProxy.new(resp[2]) { finish(request) }
        resp
      rescue Exception
        finish(request)
        raise
      ensure
        ActiveSupport::LogSubscriber.flush_all!
      end