| 123456789101112131415161718192021222324252627282930 | package mssqlimport (	"log")type Logger interface {	Printf(format string, v ...interface{})	Println(v ...interface{})}type optionalLogger struct {	logger Logger}func (o optionalLogger) Printf(format string, v ...interface{}) {	if o.logger != nil {		o.logger.Printf(format, v...)	} else {		log.Printf(format, v...)	}}func (o optionalLogger) Println(v ...interface{}) {	if o.logger != nil {		o.logger.Println(v...)	} else {		log.Println(v...)	}}
 |