MaxMindが提供しているGeoLite2をScalaから利用してみる ref: http://qiita.com/shrkw/items/3d98dd7e266932feab21

file0.scala

import java.io.File
import java.net.InetAddress
import com.maxmind.geoip2.DatabaseReader.Builder
import com.maxmind.geoip2.exception.AddressNotFoundException

object GeoipSample {
  def main(args: Array[String]): Unit ={
    val database = new File("/tmp/GeoLite2-Country.mmdb")
    // This creates the DatabaseReader object, which should be reused across lookups.
    val reader = new Builder(database).build()

    val ipAddresses = Seq("128.101.101.101", "192.168.100.1", "183.79.135.206", "212.58.244.18")
    ipAddresses foreach { ip =>
      try {
        println(reader.country(InetAddress.getByName(ip)))
      } catch {
        case e: AddressNotFoundException => println(e)
      }
    }
  }
}