Predefined pairs for go-kit/log

go-kit-log-pairs.go

// try https://goplay.space/#P8MtNeGIX69
import (
	"os"

	"github.com/go-kit/kit/log"
)

func Msg(s string) []interface{} {
	return []interface{}{
		"msg",
		s,
	}
}

func Err(s string) []interface{} {
	return []interface{}{
		"err",
		s,
	}
}

func Pairs(pairs ...[]interface{}) []interface{} {
	var result []interface{}
	for _, p := range pairs {
		p := p
		result = append(result, p...)
	}
	return result
}

func main() {
	logger := log.NewLogfmtLogger(os.Stderr)
	logger = log.With(logger, "method", "main")
	logger.Log("1")
	logger.Log("2")
	logger.Log(Pairs(Msg("test message"), Err("error text"))...)
}