Integrate typesafe/lightbend Config with coulomb QuantityParser

ConfigIntegration.scala

object ConfigIntegration {
  import scala.language.implicitConversions
  import scala.util.Try

  import scala.reflect.runtime.universe.TypeTag

  import com.typesafe.config.ConfigFactory
  import com.typesafe.config.Config

  import coulomb.parser.unitops.UnitTypeString
  import coulomb.parser.QuantityParser

  case class ConfigWithQP(conf: Config, qp: QuantityParser) {
    def getUnitQuantity[N :TypeTag, U :UnitTypeString](key: String) = {
      for {
        raw <- Try { conf.getString(key) }
        qv <- qp[N, U](raw)
      } yield { qv }
    }
  }
  object ConfigWithQP {
    implicit def exposeConfig(cwqp: ConfigWithQP): Config = cwqp.conf
  }
}

Demo.scala

scala> conf.entrySet().asScala.map { e => s"${e.getKey()} = ${e.getValue()}" }.mkString("\n")
res6: String =
bandwidth = Quoted("10 megabyte / second")
memory = Quoted("100 gigabyte")
duration = Quoted("60 second")

scala> val qp = QuantityParser[Byte :: Second :: Giga :: Mega :: HNil]
qp: coulomb.parser.QuantityParser = coulomb.parser.QuantityParser@552b9b22

scala> val confWithUnits = ConfigWithQP(conf, qp)
confWithUnits: coulomb.parser.ConfigIntegration.ConfigWithQP = ConfigWithQP(Config(SimpleConfigObject({"bandwidth":"10 megabyte / second","duration":"60 second","memory":"100 gigabyte"})),coulomb.parser.QuantityParser@552b9b22)

scala> confWithUnits.getUnitQuantity[Double, Tera %* Bit]("memory").get.show
res7: String = 0.8 Tb