How to implement level based logging in golang?

Question

Is there any good wrapper available for level based logging in golang? If not, how should I go about implementing one myself?

What I want is pretty simple. I want a

Answer 1

I am working with rlog at the moment and like their approach. The code looks good, simplistic and sufficiently documented.

What convinced me:

• no external dependencies
• i can use rlog.Info() anywhere without passing around references
• good usage of environment variables
• arbitrary number of trace levels e.g. rlog.Trace(4, "foo")

Answer 2

I think seelog fits your requirements, and it seems to be pretty popular as it pops up often in log discussions. I never used it seriously, so I can't comment beyond that.

Answer 3

https://github.com/hashicorp/logutils I found this to be very easy to use and you don't even need to change the method calls to log.Printf of the std library.

Answer 4

Here's a nice article, that basically says that you don't need level based logging. I feel that it's maybe too opinionated, but it also worths to read a different perspective.

Answer 5

You can use the module midlog to implements any other log library, https://github.com/lingdor/midlog