Class: Rack::Proxy

Inherits:
Object
  • Object
show all
Defined in:
lib/rambo/middleware/proxy.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/rambo/middleware/proxy.rb', line 6

def initialize(app, options={})
  @app = app
  @options = options
  @@conn = Rightscale::HttpConnection.new
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rambo/middleware/proxy.rb', line 12

def call(env)
  
  request = Request.new(env)
  
  # tey out persistent connections using right http conn (need to make params aware?)
  
  begin
    
    backend = rand(@options[:backend].size+1)
    
    if backend == @options[:backend].size
      @app.call(env)
    else
      host = URI.parse("http://#{env['HTTP_HOST']}").host
      port = @options[:backend][backend]
  
      req = Net::HTTP::Get.new(env['REQUEST_URI'])
      res = Net::HTTP.start(host, port) {|http|
         http.request(req, request.params)
       }

      # need to be able to pass params into request below
      #res = @@conn.req(:server => host, :port => port, :protocol => 'http', :request => request)
    
      body = res.body || ''
    
      [res.code.to_i, {'ETag' => res['ETag'], 'Cache-Control' => res['Cache-Control'], 'Content-Type' => res['Content-Type'], 'Location' => res['Location']}, body]
    end
  rescue Exception => e
    puts e.message
    @app.call(env)
  end
end