I'm not an expert on the Java implementation of GELF. I usually use GELF in C# or PHP. However, what I know from other implementations (and from GELF itself) that the format is pretty flexible and can adjust very much to your needs. Depending on the library you use, it might be possible to add some middle-ware that adds the metadate you want dynamically/automatically without the Logger object being aware of.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I'm not an expert on the Java implementation of GELF. I usually use GELF in C# or PHP. However, what I know from other implementations (and from GELF itself) that the format is pretty flexible and can adjust very much to your needs. Depending on the library you use, it might be possible to add some middle-ware that adds the metadate you want dynamically/automatically without the Logger object being aware of.