log4j-core/src/test/resources/AsyncLoggerConfigThreadContextTest.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="ERROR">
  <Appenders>
    <RandomAccessFile name="AsyncLoggerAndAsyncAppenderFile" fileName="target/AsyncLoggerAndAsyncAppenderTest.log"
        immediateFlush="false" append="false">
      <PatternLayout>
        <Pattern>%p %c{1.} %X{KEY} %x %X %m%ex%n</Pattern>
      </PatternLayout>
    </RandomAccessFile>
    <Async name="AsyncLoggerAndAsyncAppender">
      <AppenderRef ref="AsyncLoggerAndAsyncAppenderFile" />
    </Async>
    <RandomAccessFile name="AsyncAppenderFile" fileName="target/AsyncAppenderContextTest.log"
        immediateFlush="false" append="false">
      <PatternLayout>
        <Pattern>%p %c{1.} %X{KEY} %x %X %m%ex%n</Pattern>
      </PatternLayout>
    </RandomAccessFile>
    <Async name="AsyncAppender">
      <AppenderRef ref="AsyncAppenderFile" />
    </Async>
    <RandomAccessFile name="RandomAccessFile" fileName="target/AsyncLoggerTest.log"
        immediateFlush="false" append="false">
      <PatternLayout>
        <Pattern>%p %c{1.} %X{KEY} %x %X %m%ex%n</Pattern>
      </PatternLayout>
    </RandomAccessFile>
    <RandomAccessFile name="SynchronousRandomAccessFile" fileName="target/SynchronousContextTest.log"
	    		immediateFlush="true" append="false">
      <PatternLayout>
        <Pattern>%p %c{1.} %X{KEY} %x %X %m%ex%n</Pattern>
      </PatternLayout>
    </RandomAccessFile>
  </Appenders>

  <Loggers>
    <AsyncLogger name="com.foo" level="info" includeLocation="false" additivity="true">
      <Property name="configProp">configValue</Property>
      <Property name="configProp2">configValue2</Property>
      <AppenderRef ref="RandomAccessFile"/>
      <AppenderRef ref="AsyncLoggerAndAsyncAppender"/>
    </AsyncLogger>
    <Root level="info" includeLocation="false">
      <Property name="configProp">configValue</Property>
      <Property name="configProp2">configValue2</Property>
      <AppenderRef ref="SynchronousRandomAccessFile"/>
      <AppenderRef ref="AsyncAppender"/>
    </Root>
  </Loggers>
</Configuration>