Logging

Some of xtrasonnet dependencies leverage Log4J directly, instead of utilizing the more standard SLF4J framework. In order to provide a standard logging experience, the xtrasonnet library includes the log4j-to-slf4j bridge in order to forward Log4J events to SLF4J. Applications can then bundle any SLF4J logging implementation to process the log events, such as logback for example.

Using Log4J¶

If an application intends to use Log4J as the logging implementation, it is required to exclude the log4j-to-slf4j bridge as a transitive dependency of xtrasonnet. In Maven this is done as follows:

<dependency>
    <groupId>io.github.jam01</groupId>
    <artifactId>xtrasonnet</artifactId> <!-- or camel-xtrasonnet -->
    <version>0.6.1</version>
    <exclusions>
        <exclusion>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-to-slf4j</artifactId>
        </exclusion>
    </exclusions>
</dependency>