acao_sample.rb

#!/usr/bin/ruby
require "rubygems"
require "sinatra"
require "haml"

helpers do
	def xhr(domain, id, api_suffix=nil)
		api_suffix = "_#{api_suffix}" if api_suffix
		<<EOT
//// XHR for #{domain} #{id} ////
	var xhr_#{id} = new XMLHttpRequest();
	xhr_#{id}.onreadystatechange = function(){
		//alert(xhr_#{id}.readyState);
		if(xhr_#{id}.readyState === 4){
			var n = document.getElementById("#{id}");
			n.textContent = xhr_#{id}.responseText;
		}
	}
	xhr_#{id}.open("GET", "http://#{domain}:#{request.port}/api#{api_suffix}", true);
	xhr_#{id}.send();
EOT
	end

	def js
		<<EOT
function test(){
	#{xhr("localhost", "container_local")}
	#{xhr("127.0.0.1", "container_127")}
	#{xhr("127.0.0.1", "container_127_acao", "with_acao")}
}
window.onload=test;
EOT
	end

	def puts_log
		puts "GET #{request.path}"
		puts "Host: #{request.host}"
	end
end

get "/" do
	haml <<EOT
%html
 %head
  %title Test
  %script{:language=>"javascript", :src=>"http://localhost:#{request.port}/js"}
 %body
  %h1 LOCALHOST
  %p{:id=>"container_local"} DUMMY
  %h1 127.0.0.1
  %p{:id=>"container_127"} DUMMY
  %h1 127.0.0.1 with ACAO
  %p{:id=>"container_127_acao"} DUMMY
EOT
end

get "/js" do
	js
end

get "/api" do
	puts_log
	<<EOT
Welcome to API! / #{request.url}
EOT
end

get "/api_with_acao" do
	puts_log
	response["Access-Control-Allow-Origin"] = "*"
	<<EOT
Welcome to API with Access-Control-Allow-Origin! / #{request.url}"
EOT
end