Clinical Sync Batch Engine: first commit

2026-06-23 03:02:30 +08:00
parent 90b8baa2a1
commit c9994b1ba2
60 changed files with 3547 additions and 31 deletions
@@ -0,0 +1,77 @@
+using System.Text;
+using System.Text.Json;
+using Microsoft.Extensions.Options;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+public sealed class ClinicalSyncBatchConsumer : BackgroundService
+{
+    private readonly IServiceScopeFactory _scopes;
+    private readonly RabbitMqOptions _rabbitOpts;
+    private readonly ILogger<ClinicalSyncBatchConsumer> _logger;
+
+    public ClinicalSyncBatchConsumer(
+        IServiceScopeFactory scopes,
+        IOptions<RabbitMqOptions> rabbitOpts,
+        ILogger<ClinicalSyncBatchConsumer> logger)
+    {
+        _scopes = scopes;
+        _rabbitOpts = rabbitOpts.Value;
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        await Task.Delay(TimeSpan.FromSeconds(5), stoppingToken);
+
+        var factory = new ConnectionFactory
+        {
+            HostName = _rabbitOpts.Host,
+            Port = _rabbitOpts.Port,
+            UserName = _rabbitOpts.Username,
+            Password = _rabbitOpts.Password,
+            DispatchConsumersAsync = true
+        };
+
+        using var connection = factory.CreateConnection("clinical-sync-consumer");
+        using var channel = connection.CreateModel();
+        channel.BasicQos(0, prefetchCount: 5, global: false);
+
+        var consumer = new AsyncEventingBasicConsumer(channel);
+        consumer.Received += async (_, ea) =>
+        {
+            try
+            {
+                await HandleMessageAsync(channel, ea, stoppingToken);
+            }
+            catch (JsonException ex)
+            {
+                _logger.LogError(ex, "Invalid sync batch message — NACK no requeue");
+                channel.BasicNack(ea.DeliveryTag, false, requeue: false);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Sync batch consumer failed — NACK requeue");
+                channel.BasicNack(ea.DeliveryTag, false, requeue: true);
+            }
+        };
+
+        channel.BasicConsume(RabbitMqTopologyProvisioner.SyncBatchQueue, autoAck: false, consumer);
+        _logger.LogInformation("ClinicalSyncBatchConsumer consuming {Queue}", RabbitMqTopologyProvisioner.SyncBatchQueue);
+
+        await Task.Delay(Timeout.Infinite, stoppingToken);
+    }
+
+    private async Task HandleMessageAsync(IModel channel, BasicDeliverEventArgs ea, CancellationToken ct)
+    {
+        var payload = Encoding.UTF8.GetString(ea.Body.Span);
+        var doc = JsonDocument.Parse(payload);
+        var batchId = Guid.Parse(doc.RootElement.GetProperty("batchId").GetString()!);
+
+        await using var scope = _scopes.CreateAsyncScope();
+        var processor = scope.ServiceProvider.GetRequiredService<ClinicalSyncBatchProcessor>();
+        await processor.ProcessBatchAsync(batchId, ct);
+
+        channel.BasicAck(ea.DeliveryTag, false);
+    }
+}