logging/logging.go

package logging

import (
	"git.loafle.net/commons_go/config"

	"go.uber.org/zap"
)

var logger *zap.Logger

func Logger() *zap.Logger {
	if nil == logger {
		initializeLogger()
	}
	return logger
}

func initializeLogger() {
	var cfg zap.Config
	var err error

	conf := config.New()
	conf.SetConfigPath("./config")

	if err = conf.Load(&cfg, "logging.json"); nil != err {
		if logger, err = zap.NewDevelopment(); nil != err {
			panic(err)
		}
		return
	}

	if logger, err = cfg.Build(); nil != err {
		panic(err)
	}
}