Simple access log for Play! 2.3.x app

AccessLog.scala

package globals

import play.api.libs.concurrent.Execution.Implicits.defaultContext
import play.api.mvc.{Filter, RequestHeader, Result}

import scala.concurrent.Future

object AccessLog extends Filter {
  override def apply(next: RequestHeader ⇒ Future[Result])(request: RequestHeader): Future[Result] = {
    val start = System.currentTimeMillis()
    val result = next(request)
    result.map {
      result ⇒
        val duration = System.currentTimeMillis() - start
        val msg = s"method=${request.method} status=${result.header.status} duration=${duration}ms uri=${request.uri} remote-address=${request.remoteAddress} " +
          s"domain=${request.domain} query-string=${request.rawQueryString}  referer=${request.headers.get("referer").getOrElse("N/A")}"

        //        val msg = s"method=${request.method} uri=${request.uri} remote-address=${request.remoteAddress} " +
        //          s"domain=${request.domain} query-string=${request.rawQueryString}  referer=${request.headers.get("referer").getOrElse("N/A")}  user-agent=[${request.headers.get("user-agent").getOrElse("N/A")}]"

        play.Logger.of("accesslog").info(msg)
    }
    result
  }
}

logger.xml

<appender name="ACCESS_LOG_FILE" class="ch.qos.logback.core.FileAppender">
  <file>logs/access.log</file>
  <encoder>
    <pattern>%date{yyyy-MM-dd HH:mm:ss ZZZZ} %message%n</pattern>
  </encoder>
</appender>

<!-- additivity=false ensures access log data only goes to the access log -->
<logger name="accesslog" level="INFO" additivity="false">
  <appender-ref ref="ACCESS_LOG_FILE"/>
</logger>