fix(email): reconcile abandoned sends

Age stale pre-delivery attempts to failed and in-delivery attempts to uncertain without provider I/O. Notify each owner with content-free guidance and keep recovery idempotent across replicas and restarts.
2026-08-10 00:16:56 +02:00
parent 4de08b7c77
commit ee5ef7e12a
4 changed files with 162 additions and 5 deletions
@@ -0,0 +1,44 @@
+namespace JobTrackerApi.Services;
+
+public sealed class EmailSendAttemptRecoveryHostedService(
+    IServiceScopeFactory scopes,
+    IStartupReadiness startupReadiness,
+    ILogger<EmailSendAttemptRecoveryHostedService> logger) : BackgroundService
+{
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        await startupReadiness.WaitUntilReadyAsync(stoppingToken);
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                await using var scope = scopes.CreateAsyncScope();
+                var result = await scope.ServiceProvider.GetRequiredService<EmailSendAttemptStore>()
+                    .ReconcileAbandonedAsync(stoppingToken);
+                if (result.FailedPending > 0 || result.UncertainSending > 0)
+                {
+                    logger.LogWarning(
+                        "Recovered abandoned email attempts: failedPending={FailedPending}, uncertainSending={UncertainSending}. No provider retry was attempted.",
+                        result.FailedPending, result.UncertainSending);
+                }
+            }
+            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+            {
+                break;
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Email send-attempt recovery failed; provider delivery was not attempted.");
+            }
+
+            try
+            {
+                await Task.Delay(TimeSpan.FromMinutes(5), stoppingToken);
+            }
+            catch (OperationCanceledException)
+            {
+                break;
+            }
+        }
+    }
+}