package main

import (
	"fmt"
 	"github.com/sirupsen/logrus"
	"github.com/hashicorp/go-retryablehttp"
)

type LeveledLogrus struct {
	*logrus.Logger
}

func (l *LeveledLogrus) fields(keysAndValues ...interface{}) map[string]interface{} {
 	fields := make(map[string]interface{})
	
	for i := 0; i < len(keysAndValues); i += 2 {
		fields[keysAndValues[i].(string)] = keysAndValues[i+1]
	}
	
	return fields
}

func (l *LeveledLogrus) Error(msg string, keysAndValues ...interface{}) {
	l.Logger.WithFields(l.fields(keysAndValues...)).Error(msg)
}

func (l *LeveledLogrus) Info(msg string, keysAndValues ...interface{}) {
	l.Logger.WithFields(l.fields(keysAndValues...)).Info(msg)
}
func (l *LeveledLogrus) Debug(msg string, keysAndValues ...interface{}) {
	l.Logger.WithFields(l.fields(keysAndValues...)).Debug(msg)
}

func (l *LeveledLogrus) Warn(msg string, keysAndValues ...interface{}) {
	l.Logger.WithFields(l.fields(keysAndValues...)).Warn(msg)
}

func main() {
	log := logrus.New()
	logger := retryablehttp.LeveledLogger(&LeveledLogrus{log})

	logger.Info("hello", "name", "world", "age", 2020)

	fmt.Printf("%T\n", logger)
}