ProductController.java

@GetMapping("/discounts")
@HystrixCommand(fallbackMethod = "getDefaultDiscount", commandKey = "getDefaultDiscount")
public ResponseEntity<WSDiscount> getProductDiscount(@RequestParam("id") String id) {
   ResponseEntity<WSDiscount> responseEntity =
         baseRestOutboundProcessor.get("https://discount-service.com?id=" + id, null, WSDiscount.class, new HashMap<>());
   return ResponseEntity.ok(responseEntity.getBody());
}

public ResponseEntity<WSDiscount> getDefaultDiscount(String id) {
   WSDiscount discount = new WSDiscount();
   discount.setMaxDiscount("0");
   discount.setProductId(id);
   return ResponseEntity.ok(discount);
}