Before contributing to Hawkular Metrics, it might be useful to read the How to develop on Hawkular page on Hawkular website.
Hawkular Metrics is a Hawkular subproject, so top level conventions apply here. That said, there are some Metrics specific ones.
When working with the JBoss Logging API:
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Group all
INFOlevel and above messages in one interface per logical module for maintainability -
Instead of creating a logger instance in the message logger interface, use a helper class to get a logger instance with proper category
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Use existing message logger instance to log trace/debug messages instead of creating a separate logger instance
The logging projectCode is HAWKMETRICS.
Note that until we no longer need to support EAP 6.4, we must not use primitive arguments in logging method calls.
Logback is the logging backend for tests. It allows to set log level with a system property while still having a default value. No Maven filtering/replace dance involved.