feat: 토스페이먼츠 예외 처리 (#204)

* feat: TossPaymentException 생성 및 적용

* fix: 불필요한 로직 제거

* docs: 결제->예매로 수정

* refactor: TossPaymentException status code 입력받도록 수정

---------

Co-authored-by: Hanna Lee <[email protected]>

README.md

@@ -8,7 +8,7 @@
 - api-event   
 공연 도메인
 - api-booking   
-결제 도메인
+예매 도메인
 #### batch
 스프링 배치 모듈
 #### core

api/api-booking/src/main/java/com/pgms/apibooking/common/exception/BookingExceptionHandler.java

@@ -51,6 +51,7 @@ protected ResponseEntity<Object> handleExceptionInternal(Exception ex, Object bo
 	protected ResponseEntity<Object> handleHttpMessageNotReadable(HttpMessageNotReadableException ex,
 		HttpHeaders headers, HttpStatusCode status, WebRequest request) {
 		ErrorResponse response = BookingErrorCode.INVALID_INPUT_VALUE.getErrorResponse();
+		log.warn("HttpMessageNotReadableException Occurred : {}", response.getErrorMessage());
 		return ResponseEntity.badRequest().body(response);
 	}
 
@@ -64,6 +65,13 @@ protected ResponseEntity<Object> handleMethodArgumentNotValid(MethodArgumentNotV
 		return ResponseEntity.status(status).body(response);
 	}
 
+	@ExceptionHandler(TossPaymentException.class)
+	protected ResponseEntity<ErrorResponse> handleTossPaymentException(TossPaymentException ex) {
+		ErrorResponse response = new ErrorResponse(ex.getCode(), ex.getMessage());
+		log.warn("TossPaymentException Occurred : {}", response.getErrorMessage());
+		return ResponseEntity.status(ex.getStatus()).body(response);
+	}
+
 	@ExceptionHandler(BookingException.class)
 	protected ResponseEntity<ErrorResponse> handleBookingException(BookingException ex) {
 		ErrorResponse response = ex.getErrorCode().getErrorResponse();

api/api-booking/src/main/java/com/pgms/apibooking/common/exception/TossPaymentException.java

@@ -0,0 +1,19 @@
+package com.pgms.apibooking.common.exception;
+
+import org.springframework.http.HttpStatus;
+
+import com.pgms.coredomain.response.ErrorResponse;
+
+import lombok.Getter;
+
+@Getter
+public class TossPaymentException extends RuntimeException {
+	private final String code;
+	private final HttpStatus status;
+
+	public TossPaymentException(ErrorResponse errorResponse, HttpStatus status) {
+		super(errorResponse.getErrorMessage());
+		this.code = errorResponse.getErrorCode();
+		this.status = status;
+	}
+}

api/api-booking/src/main/java/com/pgms/apibooking/domain/payment/service/TossPaymentServiceImpl.java

@@ -7,19 +7,25 @@
 
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.client.HttpClientErrorException;
 import org.springframework.web.client.RestTemplate;
 
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.pgms.apibooking.common.exception.BookingException;
+import com.pgms.apibooking.common.exception.TossPaymentException;
 import com.pgms.apibooking.config.TossPaymentConfig;
 import com.pgms.apibooking.domain.payment.dto.request.PaymentCancelRequest;
 import com.pgms.apibooking.domain.payment.dto.request.PaymentConfirmRequest;
 import com.pgms.apibooking.domain.payment.dto.response.PaymentCancelResponse;
 import com.pgms.apibooking.domain.payment.dto.response.PaymentSuccessResponse;
 import com.pgms.coredomain.domain.common.BookingErrorCode;
-import com.pgms.apibooking.common.exception.BookingException;
+import com.pgms.coredomain.response.ErrorResponse;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -41,7 +47,9 @@ public PaymentSuccessResponse requestTossPaymentConfirmation(PaymentConfirmReque
 				TossPaymentConfig.TOSS_CONFIRM_URL, new HttpEntity<>(request, headers), PaymentSuccessResponse.class);
 		} catch (HttpClientErrorException e) {
 			log.warn("HttpClientErrorException: {}", e.getMessage());
-			throw new BookingException(BookingErrorCode.TOSS_PAYMENTS_ERROR);
+			ErrorResponse errorResponse = handleHttpClientErrorException(e.getResponseBodyAsString());
+			HttpStatus status = (HttpStatus)e.getStatusCode();
+			throw new TossPaymentException(errorResponse, status);
 		} catch (Exception e) {
 			log.error("Exception: {}", e.getMessage(), e);
 			throw new BookingException(BookingErrorCode.INTERNAL_SERVER_ERROR);
@@ -55,6 +63,10 @@ public PaymentCancelResponse requestTossPaymentCancellation(String paymentKey, P
 		try {
 			return restTemplate.postForObject(
 				uri, new HttpEntity<>(request, headers), PaymentCancelResponse.class);
+		} catch (HttpClientErrorException e) {
+			ErrorResponse errorResponse = handleHttpClientErrorException(e.getResponseBodyAsString());
+			HttpStatus status = (HttpStatus)e.getStatusCode();
+			throw new TossPaymentException(errorResponse, status);
 		} catch (Exception e) {
 			log.error("Exception: {}", e.getMessage(), e);
 			throw new BookingException(BookingErrorCode.INTERNAL_SERVER_ERROR);
@@ -71,4 +83,19 @@ private HttpHeaders buildTossApiHeaders() {
 		headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
 		return headers;
 	}
+
+	private ErrorResponse handleHttpClientErrorException(String body) {
+		if (body == null | body.isBlank()) {
+			throw new BookingException(BookingErrorCode.INTERNAL_SERVER_ERROR);
+		}
+		try {
+			ObjectMapper objectMapper = new ObjectMapper();
+			JsonNode jsonNode = objectMapper.readTree(body);
+			String code = jsonNode.get("code").asText();
+			String message = jsonNode.get("message").asText();
+			return new ErrorResponse(code, message);
+		} catch (JsonProcessingException e) {
+			throw new BookingException(BookingErrorCode.INTERNAL_SERVER_ERROR);
+		}
+	}
 }