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")