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Implement 5 high-priority improvements: security, performance, error handling, logging, and resilience #543
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Co-authored-by: SIkebe <[email protected]>
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Pull Request Overview
This PR implements 5 high-priority improvements focusing on security, performance, error handling, observability, and resilience for the ASP.NET Core Razor Pages application.
Key Changes:
- HTTPS enforcement moved outside environment conditionals for all environments
- Database bulk delete optimization using
ExecuteDeleteAsync()to eliminate N+1 pattern - Error handling for GitHub API with localized user-friendly messages
Reviewed Changes
Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
Program.cs |
Added Serilog structured logging configuration, HTTP resilience handler, and moved HTTPS redirection outside conditional blocks |
GitHubProfile.cshtml.cs |
Added try-catch blocks for HttpRequestException and generic Exception with localized error messages |
ApplicationDbContext.cs |
Optimized DeleteAllMessagesAsync() from foreach loop to single bulk ExecuteDeleteAsync() call |
RazorPagesProject.csproj |
Added Serilog.AspNetCore 9.0.0 and Microsoft.Extensions.Http.Resilience 10.0.0 packages |
GitHubProfile.en.resx |
Added English localized error messages for profile fetch failures and unexpected errors |
GitHubProfile.ja.resx |
Added Japanese localized error messages for profile fetch failures and unexpected errors |
.gitignore |
Added logs/ directory to exclude Serilog log files from version control |
Comments suppressed due to low confidence (1)
src/RazorPagesProject/Pages/GitHubProfile.cshtml.cs:45
- Generic catch clause.
catch (Exception)
{
ModelState.AddModelError(string.Empty, _localizer["UnexpectedError"]);
return Page();
}
| catch (Exception) | ||
| { | ||
| ModelState.AddModelError(string.Empty, _localizer["UnexpectedError"]); | ||
| return Page(); | ||
| } |
Copilot
AI
Nov 16, 2025
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一般的なExceptionのキャッチは、例外の詳細情報をロギングすべきです。予期しないエラーのデバッグを容易にするため、ILoggerを注入してエラーの詳細をログに記録してください。 / The generic Exception catch should log the exception details. Inject ILogger and log the error details to facilitate debugging of unexpected errors.
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@copilot apply changes based on this feedback
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Fixed in d4d1fb8. Injected ILogger<GitHubProfileModel> into the constructor and added error logging: _logger.LogError(ex, "Unexpected error occurred while fetching GitHub profile for user '{UserName}'", userName)
| { | ||
| GitHubUser = await Client.GetUserAsync(userName); | ||
| } | ||
| catch (HttpRequestException) |
Copilot
AI
Nov 16, 2025
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HttpRequestExceptionの例外インスタンスをキャッチして、HTTP応答の詳細(ステータスコード、応答メッセージ)をロギングすべきです。これにより、GitHub APIの問題(レート制限、404エラーなど)のトラブルシューティングが容易になります。 / The HttpRequestException instance should be caught and logged with HTTP response details (status code, response message). This will facilitate troubleshooting of GitHub API issues (rate limits, 404 errors, etc.).
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Fixed in d4d1fb8. Added logging with HTTP response details including status code: _logger.LogError(ex, "Failed to fetch GitHub profile for user '{UserName}'. Status: {StatusCode}", userName, ex.StatusCode)
src/RazorPagesProject/Program.cs
Outdated
| .ReadFrom.Services(services) | ||
| .Enrich.FromLogContext() | ||
| .WriteTo.Console() | ||
| .WriteTo.File("logs/app-.txt", rollingInterval: RollingInterval.Day)); |
Copilot
AI
Nov 16, 2025
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ファイルパスのプレースホルダーが不完全です。"logs/app-.txt"は"logs/app-{Date}.txt"にすべきです({Date}プレースホルダーを追加)。現在の設定では、Serilogは日付をファイル名に正しく挿入できません。 / The file path placeholder is incomplete. "logs/app-.txt" should be "logs/app-{Date}.txt" (add {Date} placeholder). With the current configuration, Serilog cannot correctly insert the date into the filename.
| .WriteTo.File("logs/app-.txt", rollingInterval: RollingInterval.Day)); | |
| .WriteTo.File("logs/app-{Date}.txt", rollingInterval: RollingInterval.Day)); |
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Fixed in d4d1fb8. Changed the file path from "logs/app-.txt" to "logs/app-{Date}.txt" to include the date placeholder for proper daily rolling.
…ogging Co-authored-by: SIkebe <[email protected]>
🎯 アプリケーション改善完了レポート / Application Improvements Complete Report
このPRは、アプリケーションの徹底的な調査に基づいて、優先度の高い5つの改善点を実装しました。
This PR implements five high-priority improvements based on a thorough analysis of the application.
✅ 実装完了した改善点 / Completed Improvements
1. 🔒 セキュリティ強化: HTTPS設定 / Security: HTTPS Configuration
2. ⚡ パフォーマンス: データベース最適化 / Performance: Database Optimization
DeleteAllMessagesAsync()でN+1問題ExecuteDeleteAsync()でバルク削除に変更3. 🛡️ 品質: エラーハンドリング / Quality: Error Handling
4. 📝 保守性: 構造化ロギング / Maintainability: Structured Logging
5. 🔄 信頼性: HTTP回復性 / Reliability: HTTP Resilience
📝 PRフィードバックへの対応 / PR Feedback Addressed
✅ コメント1: Serilogファイルパスの修正
"logs/app-.txt"→{Date}プレースホルダーが欠落"logs/app-{Date}.txt"に変更✅ コメント2: HttpRequestExceptionのロギング追加
_logger.LogError(ex, "Failed to fetch GitHub profile for user '{UserName}'. Status: {StatusCode}", userName, ex.StatusCode)✅ コメント3: 一般的なExceptionのロギング追加
ILogger<GitHubProfileModel>を注入してエラーの詳細をログに記録🧪 テスト結果 / Test Results
📊 パフォーマンス改善 / Performance Improvements
📦 追加パッケージ / Added Packages
Serilog.AspNetCore9.0.0Microsoft.Extensions.Http.Resilience10.0.0📝 変更されたファイル / Modified Files
🔒 セキュリティ / Security
🎓 技術的詳細 / Technical Details
HTTPS設定
バルク削除
エラーハンドリング + ロギング
構造化ロギング
HTTP回復性
📚 参考資料 / References
✨ まとめ / Summary
このPRは、セキュリティ、パフォーマンス、信頼性、保守性の4つの柱で5つの重要な改善を実装し、レビューフィードバックに基づいてロギング機能を強化しました。
This PR implements five critical improvements across four pillars and enhances logging based on review feedback.
Original prompt
Created from VS Code via the GitHub Pull Request extension.
💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.