refactor: 에러 처리 로직 리팩토링

Author: jay-so

slidingwindowcounter.iml

@@ -2,7 +2,10 @@
 <module version="4">
   <component name="AdditionalModuleElements">
     <content url="file://$MODULE_DIR$" dumb="true">
+      <excludeFolder url="file://$MODULE_DIR$/.idea/copilot" />
       <excludeFolder url="file://$MODULE_DIR$/.idea/copilot/chatSessions" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea/modules" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea/sonarlint" />
     </content>
   </component>
   <component name="SonarLintModuleSettings">

src/main/java/com/systemdesign/slidingwindowcounter/common/exception/CommonExceptionCode.java

@@ -14,8 +14,7 @@ public enum CommonExceptionCode implements ExceptionCode {
     COMMON_BAD_REQUEST(BAD_REQUEST, "COM-002", "잘못된 요청"),
     COMMON_METHOD_NOT_ALLOWED(METHOD_NOT_ALLOWED, "COM-003", "허용되지 않은 HTTP Method 요청 발생"),
     COMMON_INTERNAL_SERVER_ERROR(INTERNAL_SERVER_ERROR, "COM-004", "기타 서버 내부 에러 발생"),
-    COMMON_TOO_MANY_REQUESTS(TOO_MANY_REQUESTS,"COM-005", "사용자 요청 횟수 초과"),
-            ;
+    ;
 
     private final HttpStatus status;
     private final String code;

src/main/java/com/systemdesign/slidingwindowcounter/common/exception/GlobalExceptionHandler.java

@@ -43,10 +43,4 @@ public ResponseEntity<ExceptionResponse> handleBusinessException(BusinessExcepti
         return ResponseEntity.status(exceptionCode.getStatus())
                 .body(ExceptionResponse.from(exceptionCode.getCode()));
     }
-
-    @ExceptionHandler(RateLimitExceededException.class)
-    public ResponseEntity<ExceptionResponse> handleRateLimitExceededException(RateLimitExceededException e) {
-        return ResponseEntity.status(COMMON_TOO_MANY_REQUESTS.getStatus())
-                .body(ExceptionResponse.from(COMMON_TOO_MANY_REQUESTS.getCode()));
-    }
 }

src/main/java/com/systemdesign/slidingwindowcounter/exception/RateExceptionCode.java

@@ -0,0 +1,20 @@
+package com.systemdesign.slidingwindowcounter.exception;
+
+import com.systemdesign.slidingwindowcounter.common.exception.ExceptionCode;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+
+import static org.springframework.http.HttpStatus.TOO_MANY_REQUESTS;
+
+@Getter
+@RequiredArgsConstructor
+public enum RateExceptionCode implements ExceptionCode {
+
+    COMMON_TOO_MANY_REQUESTS(TOO_MANY_REQUESTS, "RAT-001", "사용자 요청 횟수 초과"),
+    ;
+
+    private final HttpStatus status;
+    private final String code;
+    private final String message;
+}

src/main/java/com/systemdesign/slidingwindowcounter/common/exception/RateLimitExceededException.java renamed to src/main/java/com/systemdesign/slidingwindowcounter/exception/RateLimitExceededException.java

@@ -1,4 +1,7 @@
-package com.systemdesign.slidingwindowcounter.common.exception;
+package com.systemdesign.slidingwindowcounter.exception;
+
+import com.systemdesign.slidingwindowcounter.common.exception.BusinessException;
+import com.systemdesign.slidingwindowcounter.common.exception.ExceptionCode;
 
 public class RateLimitExceededException extends BusinessException {