Logging MDC

https://github.com/playframework/play-samples/blob/2.8.x/play-scala-rest-api-example/app/v1/post/PostActionBuilder.scala#L29 참고

 

 

------------------------------------------------------------------------------------------------------------

개인적으로 만들어 본 것

 

import org.slf4j.MarkerFactory
import play.api.MarkerContext
import play.api.mvc.RequestHeader

import java.util.UUID

object Application {
  // marker context logging: implicit RequestHeader 가 있으면 MarkerContext 가 제공됨
  val serverStartId: String = UUID.randomUUID().toString.replace("-", "").substring(0, 8)

  implicit class MarkerLoggingOpt(request: RequestHeader) {
    def toMarkerContext: MarkerContext = requestHeaderToMarkerContext(request)
  }

  implicit def requestHeaderToMarkerContext(implicit request: RequestHeader): MarkerContext =
    MarkerFactory.getMarker(s"${serverStartId}-${request.id}")
}



########################################################################


import Application._

@Singleton
class Controller @Inject() (handler: RisingHandler)(val controllerComponents: ControllerComponents)(
  implicit ec: ExecutionContext
) extends BaseController with Logging {
  def create(rowKeyOpt: Option[String]): Action[AnyContent] = Action.async { implicit request =>
    logger.info("Request to create")
     ...
    getCandidateKeywords(...)
  }

  def getCandidateKeywords(targetTime: Long, size: Int)(implicit mc: MarkerContext): Future[Seq[CandidateKeyword]] = {
    logger.info(s"size=[$size]")
     ...
  }
}


########################################################################


@Singleton
class ErrorHandler @Inject() (
  env: Environment,
  config: Configuration,
  sourceMapper: OptionalSourceMapper,
  router: Provider[Router]
) extends DefaultHttpErrorHandler(env, config, sourceMapper, router) with Logging {
  override def onServerError(request: RequestHeader, exception: Throwable): Future[Result] = {
    implicit val mc: MarkerContext = request.toMarkerContext
    
    logger.info("Internal ServerError")
    ...
  }
}

 

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="30 seconds">
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%date{yyyy-MM-dd HH:mm:ss.SSS}\t[%thread]\t[%logger{36}:%line]\t%level\t%marker\t%msg%n</pattern>
    </encoder>
  </appender>

  <appender name="rolling-file" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${application.home:-.}/logs/application.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>${application.home:-.}/logs/application-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
      <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
        <maxFileSize>512MB</maxFileSize>
      </timeBasedFileNamingAndTriggeringPolicy>
      <maxHistory>30</maxHistory>
      <cleanHistoryOnStart>true</cleanHistoryOnStart>
    </rollingPolicy>

    <encoder>
      <pattern>%date{yyyy-MM-dd HH:mm:ss.SSS}\t[%thread]\t[%logger{36}:%line]\t%level\t%marker\t%msg%n</pattern>
    </encoder>
  </appender>

  <root level="INFO">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="rolling-file"/>
  </root>
</configuration>