Finatra : wrap service by a LoggingFilter

wrap_service_by_logging_filter.scala

  // build.sbt here: https://gist.github.com/frgomes/fb4ca804c21dd14e3224e4fc23d377e6

  //TODO: should take configurations from configuration Logger in the environment.
  def logWrapper(service: Service[Request, Response]): Service[Request, Response] = {
    import com.twitter.logging._
    import com.twitter.finagle.http.filter.{CommonLogFormatter, LoggingFilter}
    val factory = LoggerFactory(
      node = "",
      level = Some(Level.TRACE),
      handlers = List(
        FileHandler(
          filename = "log/oauth2.log",
          rollPolicy = Policy.SigHup
        )
      )
    )
    val logger = factory()
    val stringHandler = new StringHandler(BareFormatter, Some(Logger.DEBUG))
    logger.addHandler(stringHandler)
    logger.setUseParentHandlers(false)
    val formatter = new CommonLogFormatter
    val wrapper: Service[Request, Response] = (new LoggingFilter(logger, formatter)) andThen service
    wrapper
  }