<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Licensed to the Apache Software Foundation (ASF) under one or more
  ~ contributor license agreements.  See the NOTICE file distributed with
  ~ this work for additional information regarding copyright ownership.
  ~ The ASF licenses this file to you under the Apache License, Version 2.0
  ~ (the "License"); you may not use this file except in compliance with
  ~ the License.  You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
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  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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  -->
<Configuration xmlns="https://logging.apache.org/xml/ns"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="
                   https://logging.apache.org/xml/ns
                   https://logging.apache.org/xml/ns/log4j-config-2.xsd">

  <MarkerFilter marker="FLOW" onMatch="ACCEPT" onMismatch="NEUTRAL"/><!--1-->

  <Appenders>
    <Console name="CONSOLE">
      <PatternLayout>
        <MarkerPatternSelector defaultPattern="%d %5p [%t] %c{1} -- %m%n"><!--2-->
          <PatternMatch key="ENTER" pattern="%d %5p [%t] %c{1} => %m%n"/><!--3-->
          <PatternMatch key="EXIT" pattern="%d %5p [%t] %c{1} <= %m%n"/><!--4-->
        </MarkerPatternSelector>
      </PatternLayout>
    </Console>
  </Appenders>

  <Loggers>
    <Root level="WARN">
      <AppenderRef ref="CONSOLE"/>
    </Root>
  </Loggers>

</Configuration>
