dummy.rb

puts "it is dummy.rb"

JRuby1.5rc2+GAE+DeferredDispatcher rack app config.ru

require 'appengine-rack'
AppEngine::Rack.configure_app(
    :application => "rack20100430-023242",
    :precompilation_enabled => true,
    :version => "1")
#ENV['RACK_ENV'] = AppEngine::Rack.environment

if true
    s = File.lstat("/Users") ## <<<<<<<<<<<<<<<<<<<<<< SUCCESS
    p ["A:", s]
## ["A:", #<File::Stat dev=0xino=0, mode=040644, nlink=uid=-1, gid=rdev=0xsize=306, blksize=4096, blocks=atime=Sun Apr 18 08:21:50 UTC 2010, mtime=Sun Apr 18 08:21:50 UTC 2010, ctime=Mon Apr 26 03:56:45 UTC 2010>]

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

      def call env
        p ["[call]", "@runtime", @runtime, "@rack_app", @rack_app]

        s = File.lstat("/Users") ## <<<<<<<<<<<<<<<<<<<<<< FAIL
    ## => `call': No such file or directory - /Users (Errno::ENOENT)
        p ["B:", s]

        if @runtime.nil?
          @runtime = true
          # 1: redirect with runtime and jruby-rack loaded
          redirect_or_error(env)
        elsif @rack_app.nil?
          require @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
    class MyApp
      def call(env)
        Rack::Response.new("Hello 2").finish
      end
    end
    deferred_dispatcher = DeferredDispatcher2.new(
      :require => "dummy.rb",
      :dispatch => 'MyApp')
    run deferred_dispatcher
else
  run lambda { Rack::Response.new("Hello 1").finish }
end