Log4j2

How to configure rollbar-java to work with Log4j2

Installing

Maven

<dependencies>
  <dependency>
    <groupId>com.rollbar</groupId>
      <artifactId>rollbar-log4j2</artifactId>
      <version>1.3.1</version>
  </dependency>
</dependencies>

Gradle

implementation('com.rollbar:rollbar-log4j2:1.+')
  1. Configure Rollbar in your log4j2.xml file.
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO">
  <Appenders>
    <Rollbar name="ROLLBAR">
      <accessToken>[post_server_item_access_token]</accessToken>>
    </Rollbar>
  </Appenders>

  <Loggers>
    <Root level="debug">
      <AppenderRef ref="ROLLBAR" />
    </Root>
  </Loggers>
</Configuration>
  1. Create a Rollbar logger in your code and log an exception.
Logger logger = LoggerFactory.getLogger("com.example.rollbar.logback");
logger.error(exception);

Known Issues

Building fat-jar

Due to the issue LOG4J2-954, with log4j2, when building a fat-jar, it seems that some .dat files are not concatenated.

Possible solutions would be to use this gradle plugin https://github.com/TheBoegl/shadow-log4j-transformer or the maven equivalent one https://github.com/edwgiz/maven-shaded-log4j-transformer.

Thanks to Steve for reporting and sending the solution to us, you can find more info about this issue here.

For further examples and information on using rollbar-log4j2, check out the example app here.

📘

For more information on rollbar-java, please see the docs here.


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