using retry with decorator and same interface

decorator_same_interface_as_reader.go

type ReaderRetryDecorator struct {
	retryAttempts int
	reader        IReader
}

func (d ReaderRetryDecorator) Read() error {
	var err error
	for i := 0; i < d.retryAttempts; i++ {
		err := d.reader.Read()
		if err == nil {
			return nil
		}
	}
	return err
}

func main() {
	retryReader := ReaderRetryDecorator{3, Reader{}}
	retryReader.Read()
}