ExceptionHandlerController.java

@ControllerAdvice
@CrossOrigin
public class ExceptionHandlerController {

    @ExceptionHandler({ClientUnavailableException.class})
    public ResponseEntity<ErrorAndCodeResponse> badRequest(BackendException e) {
        ErrorAndCodeResponse error = new ErrorAndCodeResponse(e.getCode().name(), e.getCode().getMessage(), e.getAdditionalInfo());
        return new ResponseEntity<>(error, HttpStatus.BAD_REQUEST);
    }

    @ExceptionHandler(ResourceNotFoundException.class)
    public ResponseEntity<ErrorAndCodeResponse> notFound(BackendException e) {
        ErrorAndCodeResponse error = new ErrorAndCodeResponse(e.getCode().name(), e.getCode().getMessage(), e.getAdditionalInfo());
        return new ResponseEntity<>(error, HttpStatus.NOT_FOUND);
    }
}