ActiveFileName is not recognized in DXP 7.4

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Issue

• ActiveFileName attribute is not recognized when migrating a custom portal-log4j-ext.xml from DXP 7.2 to DXP 7.4.

Environment

• DXP 7.4

Resolution

• DXP 7.4 uses Log4j 2 whereas DXP 7.2 uses Log4j 1.  While DXP 7.4 has a compatibility layer that allows Log4j 1 configurations to still be usable, this compatibility layer does not have handling for ActiveFileName.
• It would be recommended to migrate the Log4j 1 configuration to new Log4j 2 configuration format.
• The Log4j 2 equivalent for ActiveFileName attribute would be the FileName attribute for RollingFileAppender
• Please feel free to refer to the following Log4j 2 sample below:
  POC: portal-log4j-ext.xml
  

  <?xml version="1.0"?>
  
  <Configuration strict="true">
  	<Appenders>
  		<Appender fileName="@liferay.home@/tomcat-9.0.71/logs/authutil.log" filePattern="@liferay.home@/tomcat-9.0.71/logs/authutil.log.%d{yyyy-MM-dd-HH}" name="AUTHUTILAPPR" type="RollingFile">
  			<Layout pattern="[%t] %d{DATE} %5p %C{1}:%L - %m%n" type="PatternLayout" />
  
  			<TimeBasedTriggeringPolicy />
  		</Appender>
  	</Appenders>
  
  	<Loggers>
  		<Logger name="AUTHUTIL" level="ALL">
  	      <AppenderRef ref="AUTHUTILAPPR"/>
  	    </Logger>
  	</Loggers>
  </Configuration>

Additional Information

• Migrating logging configurations to the Log4j 2 format
• RollingFileAppender