Hi Thomas, SiftingAppender is probably what you are looking for. https://logback.qos.ch/manual/appenders.html#SiftingAppender -- Ceki Gülcü Sponsoring SLF4J/logback/reload4j at https://github.com/sponsors/qos-ch On 8/30/2022 2:59 PM, Thomas Schittli wrote:

Good afternoon

 

The documentation for SLF4J and Logback is very detailed 😊, but unfortunately it is still difficult to understand the various possibilities and mechanisms, so I have a question:

 

Is it possible to configure the logback FileAppender so that it automatically / dynamically creates logfile names based on a string which the developer passes in e.g. LOGGER.trace()?

 

The background to the idea is as follows:

 

1. The developer is programming a new module (e.g. a configuration manager) and he would like to have the log entries summarised in a separate log file.

2. Therefore, he calls something like that: LOGGER.trace(“Config-Mgr”, “Message”)

3. SLF4J / Logback automatically reads this string and create this Logfile: AppLog-Config-Mgr.log

4. The central element is that we do not have to modify logback.xml and create an appender for each Logfile.

This means that if the user now calls e.g.: LOGGER.trace(“User-Actionlog”, “Message”) then this new log file will created without having to modify logback.xml: AppLog-User-Actionlog.log

 

Thank you very much for any tips & tricks 😊

Thanks a lot, kind regards, Thomas