Structured logging as used in log15/logrus

[tonyhb]

Log15 has a very nice API for structured logging which is compatible with varargs style logging (see here: https://github.com/inconshreveable/log15#faq).

Could this be implemented?

[ChrisHines]

@tonyhb I am a heavy user and one of the maintainers of log15, so I am familiar with the feature you linked to. Honestly, I've never felt the need to use that feature. I would like to hear more about your experience to get some perspective on the benefits of this feature.

[tonyhb]

@ChrisHines for me it's only the structure and ease of readability of using map-like arguments instead of varargs — though that's about the only reason. It's why I'm a huge fan of Logrus' log.Fields{...}. Completely understand that personal preference isn't a valid reason for implementation, though.

[ChrisHines]

@tonyhb I am interested to see an example of how you use Logrus' log.Fields{...} or log15.Ctx.

One of the early proposals for the Go kit log API had a Logrus style API. I argued against that style here: #21 (comment).

[peterbourgon]

I do see the value in having typed arguments to Log, especially (perhaps only) for applications using log-structured data, rather than simple application logs. But I'd expect all of those use cases would have application-specific types, and they'd all boil down to wrappers around the existing API anyway, so I'm not sure how much value an explicit Fields type would provide.

[ChrisHines]

Closing this as out of scope for the core log package.