mark2web/pkg/logger/logger.go

package logger

import (
	"os"

	"github.com/davecgh/go-spew/spew"
	"github.com/op/go-logging"
)

// Log is global logger
var Log = logging.MustGetLogger("myLogger")
var logBackendLeveled logging.LeveledBackend

// SetLogLevel sets log level for global logger (debug, info, notice, warning, error)
func SetLogLevel(level string) {
	logBackendLevel := logging.NOTICE
	switch level {
	case "debug":
		logBackendLevel = logging.DEBUG
		break

	case "info":
		logBackendLevel = logging.INFO
		break

	case "notice":
		logBackendLevel = logging.NOTICE
		break

	case "warning":
		logBackendLevel = logging.WARNING
		break

	case "error":
		logBackendLevel = logging.ERROR
		break

	}

	logBackendLeveled.SetLevel(logBackendLevel, "")
}

// configureLogger sets logger backend and level
func configureLogger() {
	logBackend := logging.NewLogBackend(os.Stderr, "", 0)
	logBackendFormatter := logging.NewBackendFormatter(logBackend, logging.MustStringFormatter(
		`%{color}%{time:15:04:05.000} %{shortfunc} ▶ %{level:.4s} %{id:03x}%{color:reset} %{message}`,
	))
	logBackendLeveled = logging.AddModuleLevel(logBackendFormatter)
	logBackendLeveled.SetLevel(logging.NOTICE, "")
	logging.SetBackend(logBackendLeveled)
}

func init() {
	spew.Config.DisablePointerAddresses = true
	spew.Config.DisableCapacities = true
	spew.Config.DisableMethods = true
	spew.Config.DisablePointerMethods = true
	configureLogger()
}