SpringSpring CloudFeign Client

Spring Cloud - 30. Micro Service간 통신 ErrorDecoder 구현

목차

ErrorDecoder 구현

public class FeignErrorDecoder implements ErrorDecoder {
    @Override
    public Exception decode(String methodKey, Response response) {
        switch (response.status()) {
            case 400:
                break;
            case 404:
                if (methodKey.contains("getOrders")) {
                    return new ResponseStatusException(HttpStatus.valueOf(response.status())
                            , "User's orders is empty.");
                }
                break;
            default:
                return new Exception(response.reason());
        }

        return null;
    }
}
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@Slf4j
public class UserServiceApplication {

    public static void main(String[] args){
        SpringApplication.run(UserServiceApplication.class, args);
    }

    @Bean
    public BCryptPasswordEncoder passwordEncoder() throws UnknownHostException {
        return new BCryptPasswordEncoder();
    }

    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

    @Bean
    public Logger.Level feignLoggerLevel(){
        return Logger.Level.FULL;
    }
    
    @Bean
    public FeignErrorDecoder getFeignErrorDecoder(){
        return new FeignErrorDecoder();
    }
}
token:
  expiration_time: 84600000
  secret: user_token_native_application_changed

gateway:
  ip: 192.168.123.106

order_service:
  url: http://ORDER-SERVICE/order-service/%s/orders
  exception:
    orders_is_empty: User's orders is empty.
@Component
@RequiredArgsConstructor
public class FeignErrorDecoder implements ErrorDecoder {
    private final Environment env;

    @Override
    public Exception decode(String methodKey, Response response) {
        switch (response.status()) {
            case 400:
                break;
            case 404:
                if (methodKey.contains("getOrders")) {
                    return new ResponseStatusException(HttpStatus.valueOf(response.status())
                            , env.getProperty("order_service.exception.orders_is_empty"));
                }
                break;
            default:
                return new Exception(response.reason());
        }

        return null;
    }
}
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