How to add log caller info in a fixed position for pretty logging style

[lday0321]

i'm try to output log with pretty logging style:

logger := zerolog.New(os.Stdout).With().Timestamp().Logger().Output(zerolog.ConsoleWriter{Out: os.Stdout})

logger.Info().Str("foo", "bar").Msg("Hello world")

and the output will be pretty good as:

2018-02-07T15:09:21+08:00 |INFO| Hello world foo=bar

is it possible to add caller info, such as file name, line no info at a fixed position , such as:

2018-02-07T15:09:21+08:00 |INFO|main.go|74| Hello world foo=bar

i try to add hook for logger to parse the caller info:

func (h CallerHook) Run(e *zerolog.Event, level zerolog.Level, msg string) {
	if _, file, line, ok := runtime.Caller(3); ok {
		e.Str("file", path.Base(file)).Int("line", line)
	}
}

logger := zerolog.New(os.Stdout).With().Timestamp().Logger().Hook(CallerHook{}).Output(zerolog.ConsoleWriter{Out: os.Stdout})

obviously, the file/line info are output as normal fields, such as:

2018-02-07T15:16:35+08:00 |INFO| Hello world file=man.go foo=bar func=main line=74

[rs]

What do you mean by fixed position?

[lday0321]

Sorry for bad explanation. I mean output log with file name and line no like this format:

2018-02-07T15:09:21+08:00 |INFO|main.go|74| Hello world foo=bar
2018-02-07T15:09:21+08:00 |INFO|main.go|75| Hello world foo=bar
2018-02-07T15:09:21+08:00 |INFO|main.go|76| Hello world foo=bar

[rs]

You'll have to customize the ConsoleWriter for that.

[lday0321]

ok, i will try it. thanks.