How to disable stack trace in wrn and err level ?

[sintanial]

Hello, i need to disable stack trace in WRN and ERROR level, how to do this ?

[fgrosse]

If you generally want to supress stack traces on specific logger calls you can always pass the error message instead of the entire error:

log.Error("Oh noe", "error", err)         // will generate a stacktrace
log.Error("Oh noe", "error", err.Error()) // will not generate a stacktrace

[sintanial]

unfortunately log.Error always generate stack trace :(, your method worked only with warning.

[pschultz]

Please consider adding an option to disable automatic stacktraces with the HappyDevFormatter. The traces generated by debug.Stack are quite useless.

Consider this program:

package main

import (
        "errors"

        "github.com/mgutz/logxi/v1"
)

func main() {
        err := f()
        log.Info("fatal", "err", err)
}

func f() error {
        return g()
}

func g() error {
        return errors.New("fail")
}

The automatic trace is something like

$ go run main.go  
21:17:02.595604 ERR ~ fatal err: fail
goroutine 1 [running]:
runtime/debug.Stack(0x10, 0xc420045a68, 0x4bf5c0)
        /usr/local/go/src/runtime/debug/stack.go:24 +0x79
github.com/mgutz/logxi/v1.(*HappyDevFormatter).getLevelContext(0xc42000e900, 0x3, 0xc420014c90, 0x0, 0x0, 0x0, 0x0, 0xc42000ac58, 0x5)
        /tmp/tmp.j9F8IpiHwM/main.go:21 +0x137

This mentions neither f, nor g. There are packages that provide much more relevant traces, such as github.com/pkg/errors. When I log these traces explicitly the automatic traces are confusing.

$ go run main.go  
21:16:31.119270 ERR ~ fatal err: fail
   trace: main.g
        /tmp/tmp.j9F8IpiHwM/main.go:26
main.f
        /tmp/tmp.j9F8IpiHwM/main.go:22
main.main
        /tmp/tmp.j9F8IpiHwM/main.go:11
runtime.main
        /usr/local/go/src/runtime/proc.go:183
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:2086
goroutine 1 [running]:
runtime/debug.Stack(0x10, 0xc4200459f0, 0x4c0d10)
        /usr/local/go/src/runtime/debug/stack.go:24 +0x79
github.com/mgutz/logxi/v1.(*HappyDevFormatter).getLevelContext(0xc42000e900, 0x3, 0xc420014d80, 0x0, 0x0, 0x0, 0x0, 0xc42000ac58, 0x5)
        /tmp/tmp.j9F8IpiHwM/main.go:18 +0x31f

var disableCallstack bool already exists. Can we just export that?