Add resilient Azure offline transcription backlog

2026-06-15 17:26:34 +02:00
parent b22754ce5d
commit b774ccc375
35 changed files with 2456 additions and 198 deletions
@@ -0,0 +1,53 @@
+namespace MeetingAssistant.Recording;
+
+public sealed class OfflineTranscriptionBacklogHostedService : BackgroundService
+{
+    private static readonly TimeSpan RetryDelay = TimeSpan.FromMinutes(1);
+
+    private readonly OfflineTranscriptionBacklogProcessor processor;
+    private readonly ILogger<OfflineTranscriptionBacklogHostedService> logger;
+
+    public OfflineTranscriptionBacklogHostedService(
+        OfflineTranscriptionBacklogProcessor processor,
+        ILogger<OfflineTranscriptionBacklogHostedService> logger)
+    {
+        this.processor = processor;
+        this.logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                var processed = await processor.ProcessPendingAsync(stoppingToken);
+                if (processed > 0)
+                {
+                    logger.LogInformation(
+                        "Processed {ProcessedCount} offline transcription backlog item(s)",
+                        processed);
+                }
+            }
+            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+            {
+                return;
+            }
+            catch (Exception exception)
+            {
+                logger.LogWarning(
+                    exception,
+                    "Offline transcription backlog processing failed; it will be retried later");
+            }
+
+            try
+            {
+                await Task.Delay(RetryDelay, stoppingToken);
+            }
+            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+            {
+                return;
+            }
+        }
+    }
+}