実行中のモードを判定する

object Global extends GlobalSettings {

  override def onStart(app: Application): Unit = {
    Logger.info("Application has started")
    app.mode.toString match {
      case "Prod" => Logger.info("Prod mode.")
      case "Dev" => Logger.info("Dev mode.")
      case "Test" => Logger.info("Test mode.")
      case _ => Logger.info("unknown mode.")
    }
  }

  override def onStop(app: Application): Unit ={
    Logger.info("Application shutdown ...")
  }
}

ご指摘を頂いたので下記のように修正。（case _の部分がもっと省力できる？）

object Global extends GlobalSettings {

  override def onStart(app: Application): Unit = {
    Logger.info("Application has started")
    match {
      case _ if isProd(app) => Logger.info("Prod mode.")
      case _ if isDev(app) => Logger.info("Dev mode.")
      case _ if isTest(app) => Logger.info("Test mode.")
      case _ => Logger.info("unknown mode")
    }
  }
  override def onStop(app: Application): Unit ={
    Logger.info("Application shutdown ...")
  }
}

参考

• http://www.atmarkit.co.jp/ait/articles/1312/18/news031.html