prod : 에러 포맷 공통화 및 전체 에러 Discord 알림 기능 추가#235
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Summary of Changes
Hello @polyglot-k, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
I've implemented significant improvements to our error handling mechanism. This pull request introduces a standardized error response format across the application and integrates a system to send real-time notifications of all caught exceptions to Discord. This will enhance our ability to monitor and respond to issues promptly.
Highlights
- Standardized Error Responses: I've introduced ErrorResponse and ErrorResponseFactory classes to ensure all API error responses follow a consistent structure, making error handling more predictable for clients.
- Centralized Exception Handling with Discord Notifications: The GlobalExceptionHandler has been refactored to utilize the new ErrorResponse format for all handled exceptions. Crucially, I've added logic to automatically send details of every caught exception to a Discord channel, providing immediate visibility into production issues.
- Robust Notification Logic: A new notifyIfNeeded helper method has been added to GlobalExceptionHandler to encapsulate the Discord notification logic, including error handling for the notification process itself.
- Improved Discord Notification DTO: The DiscordExceptionNotifyEventRequest class has been updated with an overloaded factory method for simpler instantiation and improved handling of optional metadata in the notification message.
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Code Review
This pull request introduces a standardized error response format and adds Discord notifications for all exceptions, which is a great step towards better error handling and monitoring. I've identified a critical issue in the notification logic that could lead to a NullPointerException, as well as a few areas for improvement regarding code consistency and message clarity. Addressing these points will make the implementation more robust and maintainable.
| ex.getCause().toString(), | ||
| ex.getMessage() |
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ex.getCause() can be null for many exceptions, which will lead to a NullPointerException when toString() is called on it. This will be caught by the outer try-catch block, but it will prevent the notification from being sent correctly and will log an unnecessary error. You should handle the null case gracefully. For instance, you could use the exception's class name if the cause is not present.
| ex.getCause().toString(), | |
| ex.getMessage() | |
| ex.getCause() != null ? ex.getCause().toString() : ex.getClass().getSimpleName(), | |
| ex.getMessage() |
| ErrorResponse response = ErrorResponse.builder() | ||
| .status(HttpStatus.BAD_REQUEST.value()) | ||
| .message(ex.getMessage()) | ||
| .errors("잘못된 요청입니다.") | ||
| .build(); |
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You've introduced a convenient ErrorResponseFactory in this pull request, but it's not being used here. To improve code consistency and conciseness, you should use the factory to create ErrorResponse instances. This can be applied to all other exception handlers in this class as well.
| ErrorResponse response = ErrorResponse.builder() | |
| .status(HttpStatus.BAD_REQUEST.value()) | |
| .message(ex.getMessage()) | |
| .errors("잘못된 요청입니다.") | |
| .build(); | |
| ErrorResponse response = ErrorResponseFactory.of( | |
| HttpStatus.BAD_REQUEST, | |
| ex.getMessage(), | |
| "잘못된 요청입니다." | |
| ); |
| return "❌ **알림 전송 실패**\n" | ||
| + String.format("- ⚠️ exception Cause : `%s`\n", exceptionCause) | ||
| + String.format("- 📨 exception Message: `%s`\n", exceptionMessage) | ||
| + String.format("- 📋 meta: `%s`", meta); | ||
| + String.format("- 📋 meta: `%s`", meta == null ? "없음" : meta); |
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The Discord notification message has a couple of areas for improvement:
- The title "❌ 알림 전송 실패" (Notification sending failed) is misleading. These notifications are for general server errors, not just for failures in the notification system itself. A more appropriate title would be "❌ 서버 에러 발생" (Server error occurred).
- When
exceptionCauseorexceptionMessagearenull, they are rendered as the string "null" in the message. It would be more readable to display a placeholder like "없음" (None), similar to howmetais handled.
| return "❌ **알림 전송 실패**\n" | |
| + String.format("- ⚠️ exception Cause : `%s`\n", exceptionCause) | |
| + String.format("- 📨 exception Message: `%s`\n", exceptionMessage) | |
| + String.format("- 📋 meta: `%s`", meta); | |
| + String.format("- 📋 meta: `%s`", meta == null ? "없음" : meta); | |
| return "❌ **서버 에러 발생**\n" | |
| + String.format("- ⚠️ exception Cause : `%s`\n", exceptionCause == null ? "없음" : exceptionCause) | |
| + String.format("- 📨 exception Message: `%s`\n", exceptionMessage == null ? "없음" : exceptionMessage) | |
| + String.format("- 📋 meta: `%s`", meta == null ? "없음" : meta); |
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