log

type Level int

type Logger interface {
	Fatal(format string, args ...interface{})
	Error(format string, args ...interface{})
	Warning(format string, args ...interface{})
	Info(format string, args ...interface{})
	Debug(format string, args ...interface{})

	IsError() bool
	IsWarning() bool
	IsInfo() bool
	IsDebug() bool

	SetLevel(level Level)
	SetHandler(logging.Handler)
}

type SyncWriterHandler struct {
	*logging.BaseHandler

	Colorize bool
	sync.Mutex
	// contains filtered or unexported fields
}