When enabling debug, schema validation produces too much output

[jfdenise]

Context: Maven plugin
Enable debug with "-X" argument: mvn clean package -X
The console displays thousands of lines (channel content).
That is caused by :https://github.com/wildfly-extras/wildfly-channel/blob/main/core/src/main/java/org/wildfly/channel/ChannelMapper.java#L76
That calls: https://github.com/wildfly-extras/wildfly-channel/blob/main/core/src/main/java/org/wildfly/channel/ChannelMapper.java#L115

This makes debug output unusable.

[jmesnil]

Why is it unusable?

This is caused by the logger com.networknt.schema.RequiredValidator.
I'm not sure which actions you would like to make. mvn -X will output all debug logs including this one.
Unreadable? For sure! Unusable? Nothing that a grep can not filter out.

[jfdenise]

Yes, we could use grep but the amount of redundant output is so huge that it should be trimmed.

[jmesnil]

I'm not sure there is much we can do in this project.

We could provide a patch to the project logging com.networknt.schema.RequiredValidator to use TRACE instead of DEBUG...

[jmesnil]

The log output can be reduced by adding the sys prop:

-Dorg.slf4j.simpleLogger.log.com.networknt.schema=off

when maven is executed: mvn clean package -Dorg.slf4j.simpleLogger.log.com.networknt.schema=off -X

However, I'm not sure if there is a way to generalise this other than editing the logger configuration used by Maven at ${MAVEN_HOME}/conf/logging/simplelogger.properties to append:

org.slf4j.simpleLogger.log.com.networknt.schema=off

[jfdenise]

@jmesnil , should we document the option and keep this behavior?