Debugf uses fmt.Sprintf to log a formatted string.

Error logs an error message with any optional fields.

Errorf uses fmt.Sprintf to log a formatted string.

Fatalf uses fmt.Sprintf to log a formatted string, and then calls process.Exit.

Info logs an info message with any optional fields.

Infof uses fmt.Sprintf to log a formatted string.

Warn logs a warn message with any optional fields.

Warnf uses fmt.Sprintf to log a formatted string.

Badger wraps the global zap.Logger for the badger.Logger interface.