interfaces/Logger.go
package interfaces
// Logger is an interface to viper
type Logger interface {
Debug(args ...interface{})
Debugf(format string, args ...interface{})
Info(args ...interface{})
Infof(format string, args ...interface{})
Warn(args ...interface{})
Warnf(format string, args ...interface{})
Error(args ...interface{})
Errorf(format string, args ...interface{})
Fatal(args ...interface{})
Fatalf(format string, args ...interface{})
}