Feature proposal: optional debug log sections

[vith]

Feature proposal: optional debug log sections

[marco-m]

I believe that this is normally called subsystem logging. I am writing this down to help people googling for it :-)

[rs]

Sounds like a good idea. Do you want to give it a try?

[JDiPierro]

👍! I was about to open an issue requesting "Trace" as a log level but this would work very well in place of that.

[deinspanjer]

In a project I'm writing that currently uses logrus, I have a conditional logger that wraps it and lets the application use tests such as:

if log.Enabled(LoggingTagOne, LoggingTagTwo) {
  fields := logrus.Fields{"A": getA(), "B": true}
  log.WithFields(fields).Debug(...)
}

Having the if block was important to prevent a bunch of unnecessary allocation, execution if it would be wasted, and it provides a nice ability to selectively log for different parts of the app on the fly.

About to open source the project and happy to point you at it if it might be handy. I added a todo to look at replacing logrus with zerolog as I'm not extremely happy with it so far.