[BE] 행사 커스텀 예외 처리

server/src/main/java/server/haengdong/ServerApplication.java → server/src/main/java/server/haengdong/HaengdongApplication.java

@@ -4,10 +4,10 @@
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
-public class ServerApplication {
+public class HaengdongApplication {
 
     public static void main(String[] args) {
-        SpringApplication.run(ServerApplication.class, args);
+        SpringApplication.run(HaengdongApplication.class, args);
     }
 
 }

server/src/main/java/server/haengdong/application/BillActionService.java

@@ -11,6 +11,8 @@
 import server.haengdong.domain.action.ActionRepository;
 import server.haengdong.domain.action.BillActionRepository;
 import server.haengdong.domain.event.EventRepository;
+import server.haengdong.exception.HaengdongErrorCode;
+import server.haengdong.exception.HaengdongException;
 
 @RequiredArgsConstructor
 @Transactional(readOnly = true)
@@ -24,7 +26,7 @@ public class BillActionService {
     @Transactional
     public void saveAllBillAction(String eventToken, List<BillActionAppRequest> requests) {
         Event event = eventRepository.findByToken(eventToken)
-                .orElseThrow(() -> new IllegalArgumentException("존재하지 않는 이벤트 토큰입니다."));
+                .orElseThrow(() -> new HaengdongException(HaengdongErrorCode.NOT_FOUND_EVENT));
         Action action = createStartAction(event);
 
         for (BillActionAppRequest request : requests) {

server/src/main/java/server/haengdong/application/EventService.java

@@ -8,6 +8,8 @@
 import server.haengdong.domain.event.Event;
 import server.haengdong.domain.event.EventRepository;
 import server.haengdong.domain.event.EventTokenProvider;
+import server.haengdong.exception.HaengdongErrorCode;
+import server.haengdong.exception.HaengdongException;
 
 @RequiredArgsConstructor
 @Service
@@ -25,7 +27,8 @@ public EventAppResponse saveEvent(EventAppRequest request) {
     }
 
     public EventDetailAppResponse findEvent(String token) {
-        Event event = eventRepository.findByToken(token).orElseThrow(() -> new IllegalArgumentException(""));
+        Event event = eventRepository.findByToken(token)
+                .orElseThrow(() -> new HaengdongException(HaengdongErrorCode.NOT_FOUND_EVENT));
 
         return EventDetailAppResponse.of(event);
     }

server/src/main/java/server/haengdong/application/MemberActionFactory.java

@@ -11,6 +11,8 @@
 import server.haengdong.domain.action.MemberAction;
 import server.haengdong.domain.action.MemberActionStatus;
 import server.haengdong.domain.action.MemberGroupIdProvider;
+import server.haengdong.exception.HaengdongErrorCode;
+import server.haengdong.exception.HaengdongException;
 
 @RequiredArgsConstructor
 @Component
@@ -45,7 +47,7 @@ private void validateMemberNames(MemberActionsSaveAppRequest request) {
 
         long uniqueCount = memberNames.stream().distinct().count();
         if (uniqueCount != memberNames.size()) {
-            throw new IllegalArgumentException();
+            throw new HaengdongException(HaengdongErrorCode.DUPLICATED_MEMBER_ACTION);
         }
     }
 
@@ -62,7 +64,7 @@ private void validateActions(MemberActionsSaveAppRequest request, List<MemberAct
     private void validateAction(MemberActionSaveAppRequest request, List<MemberAction> memberActions) {
         MemberActionStatus memberActionStatus = MemberActionStatus.of(request.status());
         if (isInvalidStatus(memberActions, request.name(), memberActionStatus)) {
-            throw new IllegalArgumentException();
+            throw new HaengdongException(HaengdongErrorCode.INVALID_MEMBER_ACTION);
         }
     }
 

server/src/main/java/server/haengdong/exception/ErrorResponse.java

@@ -0,0 +1,10 @@
+package server.haengdong.exception;
+
+public record ErrorResponse(
+        String message
+) {
+
+    public static ErrorResponse of(HaengdongErrorCode errorCode) {
+        return new ErrorResponse(errorCode.getMessage());
+    }
+}

server/src/main/java/server/haengdong/exception/GlobalExceptionHandler.java

@@ -0,0 +1,43 @@
+package server.haengdong.exception;
+
+import java.util.stream.Collectors;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.HttpRequestMethodNotSupportedException;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
+    public ResponseEntity<ErrorResponse> haengdongException() {
+        return ResponseEntity.badRequest()
+                .body(ErrorResponse.of(HaengdongErrorCode.BAD_REQUEST));
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<ErrorResponse> handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
+        String errorMessage = e.getFieldErrors().stream()
+                .map(error -> error.getField() + " " + error.getDefaultMessage())
+                .collect(Collectors.joining(", "));
+
+        return ResponseEntity.badRequest()
+                .body(new ErrorResponse(errorMessage));
+    }
+
+    @ExceptionHandler(HaengdongException.class)
+    public ResponseEntity<ErrorResponse> haengdongException(HaengdongException e) {
+        return ResponseEntity.status(e.getStatusCode())
+                .body(ErrorResponse.of(e.getErrorCode()));
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<ErrorResponse> handleException(Exception e) {
+        log.error(e.getMessage(), e);
+        return ResponseEntity.internalServerError()
+                .body(ErrorResponse.of(HaengdongErrorCode.INTERNAL_SERVER_ERROR));
+    }
+}

server/src/main/java/server/haengdong/exception/HaengdongErrorCode.java

@@ -0,0 +1,24 @@
+package server.haengdong.exception;
+
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@Getter
+public enum HaengdongErrorCode {
+    BAD_REQUEST(HttpStatus.BAD_REQUEST, "잘못된 요청입니다."),
+    DUPLICATED_MEMBER_ACTION(HttpStatus.BAD_REQUEST, "올바르지 않은 인원 요청입니다."),
+    INVALID_MEMBER_ACTION(HttpStatus.BAD_REQUEST, "잘못된 맴버 액션입니다."),
+
+    NOT_FOUND_EVENT(HttpStatus.NOT_FOUND, "존재하지 않는 행사입니다."),
+
+    INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "서버 내부에서 에러가 발생했습니다."),
+    ;
+
+    private final HttpStatus httpStatus;
+    private final String message;
+
+    HaengdongErrorCode(HttpStatus httpStatus, String message) {
+        this.httpStatus = httpStatus;
+        this.message = message;
+    }
+}

server/src/main/java/server/haengdong/exception/HaengdongException.java

@@ -0,0 +1,32 @@
+package server.haengdong.exception;
+
+import lombok.Getter;
+import org.springframework.http.HttpStatusCode;
+
+@Getter
+public class HaengdongException extends RuntimeException {
+
+    private final HaengdongErrorCode errorCode;
+    private final String message;
+
+    public HaengdongException(HaengdongErrorCode errorCode) {
+        this(errorCode, null);
+    }
+
+    public HaengdongException(HaengdongErrorCode errorCode, String message) {
+        this.errorCode = errorCode;
+        this.message = message;
+    }
+
+    public HttpStatusCode getStatusCode() {
+        return errorCode.getHttpStatus();
+    }
+
+    @Override
+    public String getMessage() {
+        if (message == null) {
+            return errorCode.getMessage();
+        }
+        return message;
+    }
+}

server/src/test/java/server/haengdong/application/BillActionServiceTest.java

@@ -14,6 +14,7 @@
 import server.haengdong.domain.event.Event;
 import server.haengdong.domain.action.BillActionRepository;
 import server.haengdong.domain.event.EventRepository;
+import server.haengdong.exception.HaengdongException;
 
 @SpringBootTest
 class BillActionServiceTest {
@@ -59,7 +60,6 @@ void saveAllBillAction1() {
         );
 
         assertThatThrownBy(() -> billActionService.saveAllBillAction("token", requests))
-                .isInstanceOf(IllegalArgumentException.class)
-                .hasMessage("존재하지 않는 이벤트 토큰입니다.");
+                .isInstanceOf(HaengdongException.class);
     }
 }

server/src/test/java/server/haengdong/application/MemberActionFactoryTest.java

@@ -20,6 +20,7 @@
 import server.haengdong.domain.action.ActionRepository;
 import server.haengdong.domain.event.EventRepository;
 import server.haengdong.domain.action.MemberActionRepository;
+import server.haengdong.exception.HaengdongException;
 
 @SpringBootTest
 class MemberActionFactoryTest {
@@ -59,7 +60,7 @@ void createMemberActionsTest() {
         Action startAction = new Action(event, 3L);
 
         assertThatThrownBy(() -> memberActionFactory.createMemberActions(request, unorderedMemberActions, startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 
     @DisplayName("인원 변동 액션을 생성한다.")
@@ -147,7 +148,7 @@ void createMemberActionTest5() {
         Action startAction = new Action(event, 2L);
 
         assertThatCode(() -> memberActionFactory.createMemberActions(request, List.of(), startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 
     @DisplayName("행사에 이미 참여 중인 경우 다시 입장할 수 없다.")
@@ -163,7 +164,7 @@ void createMemberActionTest6() {
         Action startAction = new Action(event, 2L);
 
         assertThatCode(() -> memberActionFactory.createMemberActions(request, List.of(memberAction), startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 
     @DisplayName("한 명의 사용자는 동시에 여러 번 입장할 수 없다.")
@@ -177,7 +178,7 @@ void createMemberActionTest7() {
         Action startAction = new Action(event, 1L);
 
         assertThatCode(() -> memberActionFactory.createMemberActions(request, List.of(), startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 
     @DisplayName("한 명의 사용자는 동시에 여러 번 퇴장할 수 없다.")
@@ -194,7 +195,7 @@ void createMemberActionTest8() {
         Action startAction = new Action(event, 2L);
 
         assertThatCode(() -> memberActionFactory.createMemberActions(request, List.of(memberAction), startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 
     @DisplayName("한 명의 사용자는 입장과 퇴장을 동시에 할 수 없다.")
@@ -211,6 +212,6 @@ void createMemberActionTest9() {
         Action startAction = new Action(event, 2L);
 
         assertThatCode(() -> memberActionFactory.createMemberActions(request, List.of(memberAction), startAction))
-                .isInstanceOf(IllegalArgumentException.class);
+                .isInstanceOf(HaengdongException.class);
     }
 }