IMPL-6: 集成 ConfigNotificationService 通知网关

- 在 Confirm 方法中添加事务包装，确保数据库写入的原子性
- 注入 ConsoleDbContext 用于事务管理
- 添加详细的日志记录：
  - 配置确认开始/结束
  - 数据库写入成功
  - 事务提交/回滚
  - NOTIFY 发送成功/失败
  - 缓存移除成功/失败
- 事务处理逻辑：先提交数据库事务，再发送 NOTIFY
- NOTIFY 失败不影响数据一致性（仅记录错误）

src/Controllers/PendingConfigController.cs

@@ -1,10 +1,12 @@
 using System.Security.Claims;
 using System.Text.Json;
 using System.Text.Json.Nodes;
+using Fengling.Console.Data;
 using Fengling.Console.Models.Dtos;
 using Fengling.Console.Models.Entities;
 using Fengling.Console.Models.K8s;
 using Fengling.Platform.Domain.AggregatesModel.GatewayAggregate;
+using Microsoft.EntityFrameworkCore;
 
 namespace Fengling.Console.Controllers;
 
@@ -21,6 +23,7 @@ public class PendingConfigController : ControllerBase
     private readonly INotificationService _notificationService;
     private readonly IClusterStore _clusterStore;
     private readonly IRouteStore _routeStore;
+    private readonly ConsoleDbContext _dbContext;
     private readonly ILogger<PendingConfigController> _logger;
 
     public PendingConfigController(
@@ -28,12 +31,14 @@ public class PendingConfigController : ControllerBase
         INotificationService notificationService,
         IClusterStore clusterStore,
         IRouteStore routeStore,
+        ConsoleDbContext dbContext,
         ILogger<PendingConfigController> logger)
     {
         _pendingConfigCache = pendingConfigCache;
         _notificationService = notificationService;
         _clusterStore = clusterStore;
         _routeStore = routeStore;
+        _dbContext = dbContext;
         _logger = logger;
     }
 
@@ -188,11 +193,14 @@ public class PendingConfigController : ControllerBase
     [ProducesResponseType(typeof(object), StatusCodes.Status500InternalServerError)]
     public async Task<ActionResult> Confirm(string id, [FromBody] ConfirmPendingConfigRequest? request)
     {
+        _logger.LogInformation("Starting config confirmation process for ConfigId: {ConfigId}", id);
+
         try
         {
             var config = FindConfigById(id);
             if (config == null)
             {
+                _logger.LogWarning("Pending config not found: {ConfigId}", id);
                 return NotFound(new { message = $"Pending config {id} not found" });
             }
 
@@ -204,27 +212,62 @@ public class PendingConfigController : ControllerBase
 
             if (configModel == null)
             {
+                _logger.LogError("Invalid config format for ConfigId: {ConfigId}", id);
                 return BadRequest(new { message = "Invalid config format" });
             }
 
             // 获取当前用户
             var confirmedBy = User.FindFirst(ClaimTypes.Name)?.Value ?? User.Identity?.Name ?? "system";
+            _logger.LogInformation("Config {ConfigId} confirmation initiated by user: {ConfirmedBy}", id, confirmedBy);
 
-            // 写入数据库
-            await SaveConfigToDatabaseAsync(configModel);
+            // 使用事务包装数据库写入和通知
+            await using var transaction = await _dbContext.Database.BeginTransactionAsync();
+            try
+            {
+                // 写入数据库
+                await SaveConfigToDatabaseAsync(configModel);
+                _logger.LogInformation("Database write completed successfully for ConfigId: {ConfigId}", id);
 
-            // 发送 PostgreSQL NOTIFY
-            await _notificationService.PublishConfigChangeAsync(
-                "route",
-                "create",
-                new { configId = id, serviceName = config.ServiceName, clusterId = config.ClusterId }
-            );
+                // 提交事务
+                await transaction.CommitAsync();
+                _logger.LogInformation("Database transaction committed for ConfigId: {ConfigId}", id);
+            }
+            catch (Exception ex)
+            {
+                await transaction.RollbackAsync();
+                _logger.LogError(ex, "Database transaction failed and rolled back for ConfigId: {ConfigId}", id);
+                throw;
+            }
+
+            // 发送 PostgreSQL NOTIFY（在事务外，因为 NOTIFY 使用独立连接）
+            try
+            {
+                await _notificationService.PublishConfigChangeAsync(
+                    "route",
+                    "create",
+                    new { configId = id, serviceName = config.ServiceName, clusterId = config.ClusterId }
+                );
+                _logger.LogInformation("NOTIFY sent successfully for ConfigId: {ConfigId}, Channel: gateway_config_changed", id);
+            }
+            catch (Exception ex)
+            {
+                // NOTIFY 失败不应影响已提交的数据，仅记录错误
+                _logger.LogError(ex, "Failed to send NOTIFY for ConfigId: {ConfigId}, but database changes are already committed", id);
+            }
 
             // 从缓存中移除
-            _pendingConfigCache.Remove(config.SourceId);
+            var removed = _pendingConfigCache.Remove(config.SourceId);
+            if (removed)
+            {
+                _logger.LogInformation("Config removed from cache successfully: {ConfigId}, SourceId: {SourceId}", id, config.SourceId);
+            }
+            else
+            {
+                _logger.LogWarning("Failed to remove config from cache: {ConfigId}, SourceId: {SourceId}", id, config.SourceId);
+            }
 
             _logger.LogInformation(
-                "Pending config {ConfigId} confirmed by {ConfirmedBy}. Service: {ServiceName}",
+                "Pending config {ConfigId} confirmed successfully by {ConfirmedBy}. Service: {ServiceName}",
                 id, confirmedBy, config.ServiceName);
 
             return Ok(new { message = "Config confirmed successfully", configId = id });