public DmsEventProjection(IConnection connection, IDocumentService documentService, IDispatchCommits dispatcher, ILog logger, ITranslationService translationService)
{
_documentService = documentService;
_dispatcher = dispatcher;
_translationService = translationService;
_logger = logger;
_consumer = new RabbitMqSubscription(connection, "Cev-Exchange", logger);
_consumer
.WithAppName("dms-projection")
.WithEvent <CreateDocumentPartEvent>(Handle);
}
private async Task ExecuteAsync(RabbitMqSubscription subscription, CancellationToken cancellationToken)
{
using (var connection = await _connectionFactory.CreateConnectionAsync(cancellationToken))
{
var underlyingConnection = connection.UnderlyingConnection;
var channel = underlyingConnection.CreateModel();
var consumer = new AsyncEventingBasicConsumer(channel);
channel.BasicConsume(consumer: consumer, queue: subscription.Name, autoAck: false);
while (!cancellationToken.IsCancellationRequested)
{
try
{
var message = await ReceiveAsync(consumer);
try
{
await OnReceiveAsync(message, cancellationToken).ConfigureAwait(false);
channel.BasicAck(message.DeliveryTag, multiple: false);
}
catch (Exception ex)
{
_logger.LogError(ex, $"Error: RabbitMQ Message Receiver error, could not consume message '{message.DeliveryTag}'");
channel.BasicNack(message.DeliveryTag, multiple: false, requeue: true);
await OnErrorAsync(message, ex).ConfigureAwait(false);
}
}
catch (Exception ex)
{
_logger.LogError(ex, $"Unexpected receiver error: {ex.Message}");
throw;
}
}
foreach (var tag in consumer.ConsumerTags)
{
channel.BasicCancel(tag);
}
}
}