require 'appengine-rack'
AppEngine::Rack.configure_app(
    :application => "gae151pre2test",
    :precompilation_enabled => true,
    :version => "1")

class HelloApp
  def call(env)
    ::Rack::Response.new("Hello").finish
  end
end

case 1 # 1,2,3
when 1
    s = File.lstat("/Users") ## <<<<<<<<<<<<<<<<<<<<<<
    p ["A: lstat=", s]

    class DeferredDispatcher2
      def initialize args
        @args = args
        p ["DeferredDispatcher2#initialize: @args", @args]
        @args
      end

      def call env
        p ["DeferredDispatcher2#call: @runtime", @runtime]
        p ["DeferredDispatcher2#call: @rack_app", @rack_app]
        if @runtime.nil?
          @runtime = true
          # 1: redirect with runtime and jruby-rack loaded
          redirect_or_error(env)
        elsif @rack_app.nil?
          p "[@rack_app.nil?==true]"
          s = nil
          begin
            s = File.lstat("/Users") ## <<<<<<<<<<<<<<<<<<<<<<
          rescue => e
            p "<<<<ERROR>>>> e=#{e.inspect}"
            raise e
          end
          p ["B: lstat=", s]

          require @args[:require] if @args[:require]
          @rack_app = Object.module_eval(@args[:dispatch]).new
          # 2: redirect with framework required & dispatched
          redirect_or_error(env)
        else
          # 3: process all other requests
          @rack_app.call(env)
        end
      end

      def redirect_or_error(env)
        if env['REQUEST_METHOD'].eql?('GET')
          redir_url = env['REQUEST_URI'] +
              (env['QUERY_STRING'].eql?('') ? '?' : '&') + Time.now.to_i.to_s
          res = ::Rack::Response.new('*', 302)
          res['Location'] = redir_url
          res.finish
        else
          ::Rack::Response.new('Service Unavailable', 503).finish
        end
      end
    end
    deferred_dispatcher = DeferredDispatcher2.new(
      :require => nil,
      :dispatch => 'HelloApp')
    run deferred_dispatcher
when 2
  deferred_dispatcher = AppEngine::Rack::DeferredDispatcher.new(
    :require => "time", # dummy!!
    :dispatch => 'HelloApp')
  run deferred_dispatcher
when 3
  run HelloApp.new
  #lambda { ::Rack::Response.new("Hello").finish }
end