log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>

<Configuration status="WARN">
  <Properties>
    <Property name="log-path">logs</Property>
  </Properties>
      
    <Appenders>
        <Console name="console" target="SYSTEM_OUT">
            <PatternLayout pattern="%msg%n"/>
        </Console>
        
        <RollingFile name="trainingLog" fileName="${log-path}/deepnetts-training.log"
                     filePattern="${log-path}/deepnetts-training-%d{yyyy-MM-dd}.log">
            <PatternLayout>
                <pattern>%msg%n</pattern>
            </PatternLayout>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
            </Policies>
        </RollingFile>
        
        <RollingFile name="errorLog" fileName="${log-path}/deepnetts-error.log"
                     filePattern="${log-path}/deepnetts-error-%d{yyyy-MM-dd}.log">
            <PatternLayout>
                <pattern>[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n</pattern>
            </PatternLayout>
            <Policies>
                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
            </Policies>
        </RollingFile>     
        
        <Async name="asyncTrainingLog">
            <AppenderRef ref="trainingLog"/>
        </Async>        
              
    </Appenders>
    
    <Loggers>
                   
        <Logger name="deepnetts.core.DeepNetts" additivity="false">
            <appender-ref ref="trainingLog" level="info"/>
            <appender-ref ref="errorLog" level="error"/>
            <appender-ref ref="console" level="info"/>
        </Logger>
        
        <Root level="info" additivity="false">
            <AppenderRef ref="console"/>
        </Root>
    </Loggers>
    
    
</Configuration>