Log4j2 AsyncLogger with rolling file appender not showing file line number

Question

Im using log4j2 with following dependencies:

<!-- LOG4J2 -->
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.0-rc1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.0-rc1</version>
    </dependency>
    <dependency>
        <groupId>com.lmax</groupId>
        <artifactId>disruptor</artifactId>
        <version>3.0.1</version>
    </dependency>

Log4j2.xml content:

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

<Appenders>
    <Console name="CONSOLE" target="SYSTEM_OUT">
        <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n" />
    </Console>

    <!-- Generate rolling log for router with per hour interval policy -->
    <RollingFile name="ProcessorRollingFile" fileName="D:/ocsprocessor.log"
        filePattern="D:/ocsprocessor.log.%d{MM-dd-yyyy}-%i.log">
         <PatternLayout>
      <pattern>%d{ISO8601} [%t] %p %c %L - %m%n</pattern>
  </PatternLayout>
        <Policies>
            <TimeBasedTriggeringPolicy interval="1" />
        </Policies>
        <DefaultRolloverStrategy max="24" />
    </RollingFile>



    <!-- Register Async appender -->
    <Async name="AsyncRollingFile">
        <AppenderRef ref="ProcessorRollingFile" />
    </Async>
</Appenders>

<Loggers>
    <AsyncLogger name="com.tritronik.logger.log4j2" level="error"
        additivity="false">
        <AppenderRef ref="AsyncRollingFile" />
    </AsyncLogger>


</Loggers>
</Configuration>

Turn out that everything went fine except the log doesn't show Line number of throwed logger (the %L in pattern).

I googled and found out that for async logger and rolling file appender, there is no one mentioned using %L, so how can i achieved it then? Or is it doesn't support %L?

Edit: I have tried added includeLocation="true", but still same results

2014-05-23 11:42:40,368 [threadPoolTaskExecutor-5] ERROR (AsyncLogger:) - THIS IS TEST MESSAGE FOR LOGGING TEST PURPOSE

Thanks

Remko Popma Remko Popma · Accepted Answer · 2014-05-23T08:30:52

First, remove the Async appender, and point the appender-ref of the AsyncLogger to the ProcessorLoggingFile directly. Second, you must add includeLocation="true" on the AsyncLogger.

Having an async appender in addition to an async logger does not help and in this case might be what prevents the includeLocation from working correctly.

Log4j2 AsyncLogger with rolling file appender not showing file line number

1 Answers