gattica_engine.rb

# put this in /lib/autoload
# Make sure /config/application.rb has a line `config.autoload_paths` which has /lib/autoload in it

module Gattica
  class Engine
  
    def do_http_get(query_string)
      # fixes 1.9 compatibility with http
      response = @http.get(query_string, @headers)
      data = response.body

      # error checking
      if response.code != '200'
        case response.code
        when '400'
          raise GatticaError::AnalyticsError, response.body + " (status code: #{response.code})"
        when '401'
          raise GatticaError::InvalidToken, "Your authorization token is invalid or has expired (status code: #{response.code})"
        else  # some other unknown error
          raise GatticaError::UnknownAnalyticsError, response.body + " (status code: #{response.code})"
        end
      end

      return data
    end
    
  end
end