Simple GeoIP service class using freegeoip.net and the Ruby Standard Library

geoip_service.rb

require 'net/http'
require 'ostruct'
require 'json'

class GeoipService
  def initialize(http = nil)
    @http = http || Net::HTTP.new('freegeoip.net')
  end

  def call(host)
    OpenStruct.new JSON.parse @http.get("/json/#{host}").body
  end
end

The original Gist was using Faraday and Hashie, but it is quite possible to achieve the same result (albeit with no error checking) using only the Ruby Standard Library.

Albeit with no error checking.