Log4j 2.x with MongoDB & SLF4J

build.sbt

scalaVersion := "2.11.3"

mainClass := Some("Log4j2WithMongoAppenderDemo")

unmanagedClasspath in Runtime += file(".")

libraryDependencies ++= Seq(
    "org.slf4j" % "slf4j-api" % "1.7.7",
    "org.apache.logging.log4j" % "log4j-slf4j-impl" % "2.1",
    "org.apache.logging.log4j" % "log4j-core" % "2.1",
    "org.apache.logging.log4j" % "log4j-api" % "2.1",
    "org.apache.logging.log4j" % "log4j-nosql" % "2.1",
    "org.mongodb" % "mongo-java-driver" % "2.12.4"
)

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
  <Appenders>
    <!--
    <Console name="Console" target="SYSTEM_OUT">
      <Filters>
        <ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
      </Filters>
      <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
    </Console>
    -->
    <NoSql name="NoSql">
      <Filters>
        <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
      </Filters>
      <MongoDb databaseName="test" collectionName="sampleLogs" server="localhost" 
               username="log4j2" password="secret"/>
    </NoSql>
  </Appenders>
  <Loggers>
    <Root level="info">
      <AppenderRef ref="Console"/>
      <AppenderRef ref="NoSql"/>
    </Root>
  </Loggers>
</Configuration>

Log4j2WithMongoAppenderDemo.scala

object Log4j2WithMongoAppenderDemo extends App {
    val logger = org.slf4j.LoggerFactory.getLogger(Log4j2WithMongoAppenderDemo.getClass)

    logger.trace("A trace message")
    logger.debug("A debug message")
    logger.info("An info message")
    logger.warn("A warning message")
    logger.error("An error message")
    logger.error("An error message with an exception", new Exception("Some serious problem"))

    val marker = org.slf4j.MarkerFactory.getMarker("someMarker")
    logger.info(marker, "Message marked with {}", marker.getName())
}