LindaのWeb版の一提案。

rich_rinda.rb

# -*- coding; utf-8 -*-
require 'rinda/tuplespace'
require 'drb/drb'
require 'webrick'
require 'webrick/cgi'

class RichRinda < WEBrick::CGI
  def initialize(ts, *args)
    super(*args)
    @ts = ts
  end
  
  def do_GET(req, res)
    do_request(req, res)
  end

  def req_to_tuple(req, as_pattern)
    hash = Hash[req.query.collect {|k, v|[ 'x-' + k, v == '' ? nil : v]}]
    hash['query'] = as_pattern ? nil : req.query_string
    hash
  end

  def do_rinda(req)
    case req.path_info
    when '/write'
      @ts.write(req_to_tuple(req, false), 24 * 60 * 60)
      {}
    when '/take'
      @ts.take(req_to_tuple(req, true), 600) rescue {}
    when '/read'
      @ts.read(req_to_tuple(req, true), 600) rescue {}
    else
      raise "invalid operation #{req.path_info}"
    end
  end
  
  def do_request(req, res)
    tuple = do_rinda(req)
    res['content-type'] = 'application/x-www-form-urlencoded'
    res.body = tuple['query']
  rescue
  end
end

if __FILE__ == $0
  ts = Rinda::TupleSpace.new(60)
  cgi = RichRinda.new(ts)
  unless $DEBUG
    Process.daemon
  end
  DRb.start_service('druby://localhost:50902', cgi)
  DRb.thread.join
end