How can I configure system properties or logback configuration variables from typesafe config?

Question

I have variables with defaults in my logback.xml configuration file, and I would like to be able to optionally set these variables from my typesafe config app

Answer 1

I chose to programmatically configure logback having typesafe config. It turned out to be easy.

def enableRemoteLogging(config: Config) = {
    val ctx = LoggerFactory.getILoggerFactory.asInstanceOf[LoggerContext]

    val gelf = new GelfAppender
    gelf.setGraylog2ServerHost(config.getString("logging.remote.server"))
    gelf.setUseLoggerName(true)
    gelf.setUseThreadName(true)
    gelf.setUseMarker(true)
    gelf.setIncludeFullMDC(true)
    gelf.setContext(ctx)
    gelf.start()

    LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)
      .asInstanceOf[ch.qos.logback.classic.Logger]
      .addAppender(gelf)
  }