atesibrahim

@AllArgsConstructor
@Service
public class BookService {

    @Autowired
    private BookRepository bookRepository;

    public Book findById(String id) {
        return bookRepository.findById(id).orElse(Book.builder().build());
    }

atesibrahim

@RestController
@RequestMapping("books")
@RequiredArgsConstructor
public class BookController {

    private final BookService bookService;

    @GetMapping("/{id}")
    public Book findById(@PathVariable(name = "id") String id) {
        return bookService.findById(id);

atesibrahim

{
    "id": "1231415-f785b-4c794--2134bffcd3",
    "title":"Animal Farm",
    "author":{
        "name": "George Orwell"
    },
    "tags": ["fiction"]
}

atesibrahim

@RestController
@RequestMapping("books")
public class BookController {

    @Autowired
    private BookService bookService;

    @GetMapping("/{id}")
    public BookDto getById(@PathVariable(name = "id") Integer id) {
        return bookService.getById(id);

atesibrahim

public class BookClientErrorDecoder implements ErrorDecoder {

    @Override
    public Exception decode(String methodKey, Response response) {
        return new Default().decode(methodKey, response);
    }
}

atesibrahim

public class BookClientFeignConfiguration {

    private static final int CONNECT_TIMEOUT_MILLIS = 5000;
    private static final int READ_TIMEOUT_MILLIS = 5000;

    @Bean
    public Contract useBookClientFeignAnnotations() {
        return new SpringMvcContract();
    }

atesibrahim

@FeignClient(value = "bookApiClient", url = "${book-api.url}", configuration = BookClientFeignConfiguration.class)
public interface BookApiClient {

    @GetMapping(value = "/books/{id}")
    BookResponse getById(@PathVariable String id);
}

atesibrahim

@RestController
@RequestMapping("books")
@RequiredArgsConstructor
public class BookController {

    private final BookService bookService;

    @GetMapping
    public List<Book> findAll() {
        return bookService.findAll();

atesibrahim

@AllArgsConstructor
@Service
public class BookService {

    @Autowired
    private BookRepository bookRepository;

    public List<Book> findAll() {
        Iterable<Book> book = bookRepository.findAll();
        List<Book> books = new ArrayList<>();

atesibrahim

@Getter
@Setter
@RequiredArgsConstructor
@AllArgsConstructor
@Builder
@Document(indexName = "book")
public class Book {

    @Id
    private String id;