Page History

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• [product] ProductController에서 항상 Exception 던지게 수정하기 (장애 상황 흉내)

  • Code Block
    @RestController @RequestMapping("/products") public class ProductController { @GetMapping(path = "{productId}") public String getProductInfo(@PathVariable String productId) { // return "[product id = " + productId + " at " + System.currentTimeMillis() + "]"; throw new RuntimeException("I/O Exception"); } }

• [display] ProductRemoteServiceImp에 Fallback Method 작성하기

  • Code Block

    @Service public class ProductRemoteServiceImpl implements ProductRemoteService { private static final String url = "http://localhost:8082/products/"; private final RestTemplate restTemplate; public ProductRemoteServiceImpl(RestTemplate restTemplate) { this.restTemplate = restTemplate; } @Override @HystrixCommand(fallbackMethod = "getProductInfoFallback") public String getProductInfo(String productId) { return this.restTemplate.getForObject(url + productId, String.class); } public String getProductInfoFallback(String productId) { return "[ this product is sold out ]"; } }

• Product → Display 호출 확인

  • Info
    Product 확인 http://localhost:8082/products/22222 Image Modified Display 확인 http://localhost:8081/displays/11111 Image Modified

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