feat: 500에러, 400에러 #서버-에러 채널에 슬랫봇 알림 추가 (#157)

* feat: 슬랙 서버-에러 채널에 400,500 에러 전송 기능 개발

* chore: test controller 삭제

Author: JjungminLee

src/main/java/ssu/eatssu/domain/slack/entity/SlackChannel.java

@@ -7,7 +7,8 @@ public enum SlackChannel {
 	REPORT_CHANNEL("#신고"),
 	ADDMENU_CHANNEL("#메뉴_추가"),
 	ERROR_CHANNEL("#장애"),
-	USER_INQUIRY_CHANNEL("#유저-문의");
+	USER_INQUIRY_CHANNEL("#유저-문의"),
+	SERVER_ERROR("C092J4J6F0U");
 
 	@Getter
 	private String krName;

src/main/java/ssu/eatssu/domain/slack/entity/SlackMessageFormat.java

@@ -63,4 +63,24 @@ public static String sendUserInquiry(Inquiry inquiry) {
 			, inquiry.getCreatedDate(), inquiry.getContent()};
 		return messageFormat.format(args);
 	}
+
+
+	public static String sendServerError(Exception ex) {
+		MessageFormat messageFormat = new MessageFormat(
+			"""
+			===================
+			*서버 에러 발생*
+			- 예외 클래스: {0}
+			- 예외 메시지: {1}
+			- 원인: {2}
+			===================
+			"""
+		);
+		Object[] args = {
+			ex.getClass().getName(),
+			ex.getMessage(),
+			ex.getCause() != null ? ex.getCause().toString() : "없음"
+		};
+		return messageFormat.format(args);
+	}
 }

src/main/java/ssu/eatssu/domain/slack/service/SlackService.java

@@ -9,6 +9,7 @@
 import com.slack.api.methods.MethodsClient;
 import com.slack.api.methods.SlackApiException;
 import com.slack.api.methods.request.chat.ChatPostMessageRequest;
+import com.slack.api.methods.response.chat.ChatPostMessageResponse;
 
 import lombok.extern.slf4j.Slf4j;
 import ssu.eatssu.domain.slack.entity.SlackChannel;

src/main/java/ssu/eatssu/global/handler/GlobalExceptionHandler.java

@@ -23,7 +23,10 @@
 import org.springframework.web.servlet.NoHandlerFoundException;
 import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler;
 
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import ssu.eatssu.domain.slack.entity.SlackMessageFormat;
+import ssu.eatssu.domain.slack.service.SlackService;
 import ssu.eatssu.global.handler.response.BaseException;
 import ssu.eatssu.global.handler.response.BaseResponse;
 import ssu.eatssu.global.handler.response.BaseResponseStatus;
@@ -33,16 +36,26 @@
  */
 @Slf4j
 @RestControllerAdvice
+@RequiredArgsConstructor
 public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
+	private final SlackService slackService;
 
 	/**
 	 * BaseException 처리
 	 */
 	@ExceptionHandler(BaseException.class)
 	public ResponseEntity<BaseResponse<Void>> handleBaseException(BaseException e) {
 		log.info(e.getStatus().toString());
+		sendErrorToSlack(e);
 		return ResponseEntity.status(e.getStatus().getHttpStatus()).body(BaseResponse.fail(e.getStatus()));
 	}
+	@ExceptionHandler(Exception.class)
+	public ResponseEntity<BaseResponse<Void>> handleAllUnhandledException(Exception ex) {
+		sendErrorToSlack(ex);
+		return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR)
+			.body(BaseResponse.fail(BaseResponseStatus.INTERNAL_SERVER_ERROR));
+	}
+
 
 	/**
 	 * 경로는 있으나 지원하지 않는 http method로 요청 시
@@ -215,4 +228,35 @@ protected ResponseEntity<Object> handleHttpMessageNotWritable(
 							 .body(BaseResponse.fail(BaseResponseStatus.INTERNAL_SERVER_ERROR));
 	}
 
+	@Override
+	protected ResponseEntity<Object> handleExceptionInternal(
+		@NonNull Exception ex,
+		Object body,
+		@NonNull HttpHeaders headers,
+		@NonNull HttpStatusCode statusCode,
+		@NonNull WebRequest request) {
+
+		HttpStatus status = HttpStatus.valueOf(statusCode.value());
+
+		if (status.is4xxClientError() || status.is5xxServerError()) {
+			sendErrorToSlack(ex);
+		}
+
+		BaseResponseStatus responseStatus = status.is4xxClientError()
+			? BaseResponseStatus.BAD_REQUEST
+			: BaseResponseStatus.INTERNAL_SERVER_ERROR;
+
+		return ResponseEntity.status(status).body(BaseResponse.fail(responseStatus));
+	}
+
+	private void sendErrorToSlack(Exception ex) {
+		try {
+			String message = SlackMessageFormat.sendServerError(ex);
+			slackService.sendSlackMessage(message, ssu.eatssu.domain.slack.entity.SlackChannel.SERVER_ERROR);
+		} catch (Exception slackEx) {
+			log.warn("슬랙 전송 실패: {}", slackEx.getMessage());
+		}
+	}
+
+
 }