/// <summary>
/// Initializes a new instance of <see cref="CommittedEventStreamCoordinator"/>
/// </summary>
/// <param name="serializer"><see cref="ISerializer"/> to use for deserializing <see cref="IEvent">events</see></param>
/// <param name="applicationResourceIdentifierConverter"><see cref="IApplicationResourceIdentifierConverter"/> used for converting resource identifiers</param>
/// <param name="applicationResourceResolver"><see cref="IApplicationResourceResolver"/> used for resolving types from <see cref="IApplicationResourceIdentifier"/></param>
/// <param name="connectionStringProvider"><see cref="ICanProvideConnectionStringToReceiver">Provider</see> of connection string</param>
public CommittedEventStreamReceiver(
ISerializer serializer,
IApplicationResourceIdentifierConverter applicationResourceIdentifierConverter,
IApplicationResourceResolver applicationResourceResolver,
ICanProvideConnectionStringToReceiver connectionStringProvider)
{
_serializer = serializer;
_applicationResourceIdentifierConverter = applicationResourceIdentifierConverter;
_applicationResourceResolver = applicationResourceResolver;
var connectionString = connectionStringProvider();
_queueClient = new QueueClient(connectionString, Constants.QueueName, ReceiveMode.PeekLock);
_queueClient.RegisterMessageHandler(Receive);
}
/// <summary>
/// Initializes a new instance of <see cref="CommittedEventStreamCoordinator"/>
/// </summary>
/// <param name="serializer"><see cref="ISerializer"/> to use for deserializing <see cref="IEvent">events</see></param>
/// <param name="applicationResourceIdentifierConverter"><see cref="IApplicationResourceIdentifierConverter"/> used for converting resource identifiers</param>
/// <param name="applicationResourceResolver"><see cref="IApplicationResourceResolver"/> used for resolving types from <see cref="IApplicationResourceIdentifier"/></param>
/// <param name="connectionStringProvider"><see cref="ICanProvideConnectionStringToReceiver">Provider</see> of connection string</param>
public CommittedEventStreamReceiver(
ISerializer serializer,
IApplicationResourceIdentifierConverter applicationResourceIdentifierConverter,
IApplicationResourceResolver applicationResourceResolver,
ICanProvideConnectionStringToReceiver connectionStringProvider)
{
_serializer = serializer;
var factory = new ConnectionFactory();
factory.Uri = connectionStringProvider();
var connection = factory.CreateConnection();
var exchangeName = "Events";
var routingKey = "RoutingKey";
var queueName = "Events";
var model = connection.CreateModel();
model.ExchangeDeclare(exchangeName, ExchangeType.Direct);
model.QueueDeclare(queueName, false, false, false, null);
model.QueueBind(queueName, exchangeName, routingKey, null);
var consumer = new EventingBasicConsumer(model);
consumer.Received += (ch, ea) =>
{
try
{
var dynamicEventsAndEnvelopes = new List <dynamic>();
var json = System.Text.Encoding.UTF8.GetString(ea.Body);
_serializer.FromJson(dynamicEventsAndEnvelopes, json);
var eventsAndEnvelopes = new List <EventAndEnvelope>();
foreach (var dynamicEventAndEnvelope in dynamicEventsAndEnvelopes)
{
var env = dynamicEventAndEnvelope.Envelope;
var correlationId = (TransactionCorrelationId)Guid.Parse(env.CorrelationId.ToString());
var eventId = (EventId)Guid.Parse(env.EventId.ToString());
var sequenceNumber = (EventSequenceNumber)long.Parse(env.SequenceNumber.ToString());
var sequenceNumberForEventType = (EventSequenceNumber)long.Parse(env.SequenceNumberForEventType.ToString());
var generation = (EventGeneration)long.Parse(env.Generation.ToString());
var @event = applicationResourceIdentifierConverter.FromString(env.Event.ToString());
var eventSourceId = (EventSourceId)Guid.Parse(env.EventSourceId.ToString());
var eventSource = applicationResourceIdentifierConverter.FromString(env.EventSource.ToString());
var version = (EventSourceVersion)EventSourceVersion.FromCombined(double.Parse(env.Version.ToString()));
var causedBy = (CausedBy)env.CausedBy.ToString();
var occurred = DateTimeOffset.Parse(env.Occurred.ToString());
var envelope = new EventEnvelope(
correlationId,
eventId,
sequenceNumber,
sequenceNumberForEventType,
generation,
@event,
eventSourceId,
eventSource,
version,
causedBy,
occurred
);
var eventType = applicationResourceResolver.Resolve(@event);
var eventInstance = Activator.CreateInstance(eventType, new object[] { eventSourceId }) as IEvent;
var e = dynamicEventAndEnvelope.Event.ToString();
_serializer.FromJson(eventInstance, e);
eventsAndEnvelopes.Add(new EventAndEnvelope(envelope, eventInstance));
}
var stream = new CommittedEventStream(eventsAndEnvelopes.First().Envelope.EventSourceId, eventsAndEnvelopes);
Received(stream);
model.BasicAck(ea.DeliveryTag, false);
}
catch
{
}
finally
{
}
};
Task.Run(() => model.BasicConsume(queueName, false, consumer));
}
