log/example/example.go

package main

import (
	"fmt"
	"udico.de/util/log"
)

var logger = log.Logger("MyLogger").SetLevel(log.TRACE).SetAutotrace(log.TRACE)

func anotherFunc() {
	log.NOTICE.WithStackAs(log.INFO).Msg("Let's dump a stack trace!")
}

func aFunc() {
	log.INFO.Msg("in aFunc")
	anotherFunc()
}

func main() {
	log.DefaultLogger.SetLevel(log.DEBUG).SetAutotrace(log.TRACE)
	// dump logger config:
	log.INFO.Explain()
	log.WARN.To(logger).Msg("Now doing things :)")

	log.INFO.Msg("hallo %v", "bla")
	log.TRACE.To(logger).Arg("a", "b").If(func(msg log.Fn) {
		msg("Calculating important things ...")
		msg("hi!")
	})

	aFunc()

	log.ERROR.To(logger).WithStackAs(log.ERROR).Msg("Bad things happened :(")
	log.NOTICE.Msg("I'm done!")
	log.INFO.Err(fmt.Errorf("oh, an error!")).Msg("what's this?")
}

/*
	log.INFO.Msg("...", a)
	log.INFO.Ctx(lo).With("field", "").Msg(...)

	log.TRACE.If(func(log logfn) {
		// some expensive code goes here
		log("something")
	})
*/