Switch to log4j2

[OlafSeng]

Hi Stefan,

as discussed in the community, I have created a merge request regarding my Log4J2 changes.
The idea is to use a PaxOsgiappender, as described here.

I was able to test the changes successfully for the OpenEMS edge running on my local machine. However, the configuration file in 'pax/logging.config' is not updated when I start the backend locally.
Unfortunately, I was not able to find out why, but the problem already existed before applying my changes, so it might be an issue with the development branch.

Originally, I have developed these changes for a slightly older version of OpenEMS which still runs on Java 8. On this version, both OpenEMS Backend and Edge are working fine.

Regards,

Olaf

[sfeilmeier]

Hi Olaf,

thank you very much for your contribution! I fixed updating of the configuration files for Edge and Backend. It works reliably here on my machine.

Could you give it a final test so that we can merge it?

Regards,
Stefan

[OlafSeng]

Hi Stefan,

thank you for fixing the configuration. Now it works reliably on my machine as well, so I would say we can merge the changes.

Funny thing is, at first it didn't work. But after I switched from '16.0.1.j9-adpt' to '17.0.1.12.1-amzn' and completely rebuilt the application, everything is fine.

Regards,

Olaf

[sfeilmeier]

Thanks for checking. Strange... sometimes the build behaviour is weird. I usually rely on my prepare-commit.sh script for the final check. (https://github.com/OpenEMS/openems/blob/develop/tools/prepare-commit.sh)

Thanks again for the contribution!