Add in logging

[Vadoola]

Add in some logging. Trying to figure out what logging crate to use.
Tracing is certainly an advanced flexible option, but right now I'm not using async, and don't think I will need to be in the future for this program. So perhaps a simpler/slimmer logging crate would work just fine.

https://docs.rs/log/latest/log/index.html#available-logging-implementations

[Vadoola]

Is it worth on linux to try and use https://docs.rs/systemd-journal-logger/latest/systemd_journal_logger/
to try and log to systemd if it's detected and a log file if it's not try syslog
https://docs.rs/syslog/latest/syslog/

[Vadoola]

is there a crate that logs to windows events?

looks like https://github.com/bbqsrc/eventlog

[Vadoola]

Should I just go with a basic file?
https://docs.rs/ftail/latest/ftail/
https://docs.rs/structured-logger/latest/structured_logger/
https://docs.rs/flexi_logger/latest/flexi_logger/

I'm leaning towards on Linux look for systemd log, if that fails try syslog, if that fails, dump a log file into the folder with the settings
on Windows try to use the event system, if that fails try to create a log file in the same directory as settings
on Mac....no a clue, not sure what kind of logging Mac has, is it just syslog? I also don't have a Mac to even test his program on. Might just leave it as the fall back which is a text file in settings dir

So I'm probably looking at

• Windows
  • https://github.com/bbqsrc/eventlog
  • fall back to text (leaning towards flexi_logger)
• Linux
  • systemd_journal_logger
  • Fall Back to syslog
  • fall back to text (leaning towards flexi_logger)
• Mac
  • fall back to text (leaning towards flexi_logger)