public void Send(CommittedEventStream committedEventStream)
{
if (_senderConfiguration.Topics.Count() == 0)
{
return;
}
_logger.Information("Sending committed event stream");
_bridge.Send(committedEventStream);
var eventContentAndEnvelopes = _eventConverter.Convert(committedEventStream);
var json = _serializer.ToJson(eventContentAndEnvelopes);
_logger.Trace("Sending JSON : " + json);
_senderConfiguration.Topics.ForEach(topic =>
{
_logger.Information($"Send committed event stream to topic: '{topic}'");
_publisher.Publish(topic, json);
});
}
void Received(Topic topic, string eventAsJson)
{
try
{
_logger.Trace($"Message received 'eventAsJson'");
dynamic raw = JsonConvert.DeserializeObject(eventAsJson);
foreach (var rawContentAndEnvelope in raw)
{
var eventSourceId = (EventSourceId)Guid.Parse(rawContentAndEnvelope.Envelope.EventSourceId.ToString());
var eventIdentifier = _applicationResourceIdentifierConverter.FromString(rawContentAndEnvelope.Envelope.Event.ToString());
var version = EventSourceVersion.FromCombined((double)rawContentAndEnvelope.Envelope.Version);
var correlationId = (TransactionCorrelationId)Guid.Parse(rawContentAndEnvelope.Envelope.CorrelationId.ToString());
var eventSource = new ExternalSource(eventSourceId);
CorrelationId = correlationId;
_logger.Trace($"Received event of with resource name '{eventIdentifier.Resource.Name}' from '{eventSourceId}' with version '{version}' in correlation '{correlationId}'");
var eventType = _eventTypes.SingleOrDefault(et => et.Name == eventIdentifier.Resource.Name);
if (eventType != null)
{
_logger.Trace("Matching Event Type : " + eventType.AssemblyQualifiedName);
var @event = GetEventFrom(rawContentAndEnvelope, eventSourceId, eventType);
var uncommittedEventStream = new UncommittedEventStream(eventSource);
uncommittedEventStream.Append(@event, version);
_logger.Information($"Committing uncommitted event stream with correlationId '{correlationId}'");
var envelopes = _eventEnvelopes.CreateFrom(eventSource, uncommittedEventStream.EventsAndVersion);
var envelopesAsArray = envelopes.ToArray();
var eventsAsArray = uncommittedEventStream.ToArray();
_logger.Trace("Create an array of events and envelopes");
var eventsAndEnvelopes = new List <EventAndEnvelope>();
for (var eventIndex = 0; eventIndex < eventsAsArray.Length; eventIndex++)
{
var envelope = envelopesAsArray[eventIndex];
var currentEvent = eventsAsArray[eventIndex];
eventsAndEnvelopes.Add(new EventAndEnvelope(
envelope
.WithTransactionCorrelationId(correlationId)
.WithSequenceNumber(_eventSequenceNumbers.Next())
.WithSequenceNumberForEventType(_eventSequenceNumbers.NextForType(envelope.Event)),
currentEvent
));
}
_logger.Trace("Committing events to event store");
_eventStore.Commit(eventsAndEnvelopes);
_logger.Trace($"Set event source versions for the event source '{envelopesAsArray[0].EventSource}' with id '{envelopesAsArray[0].EventSourceId}'");
_eventSourceVersions.SetFor(envelopesAsArray[0].EventSource, envelopesAsArray[0].EventSourceId, envelopesAsArray[envelopesAsArray.Length - 1].Version);
_logger.Trace("Create a committed event stream");
var committedEventStream = new CommittedEventStream(uncommittedEventStream.EventSourceId, eventsAndEnvelopes);
_committedEventStreamBridge.Send(committedEventStream);
CorrelationId = Guid.Empty;
}
}
}
catch (Exception ex)
{
_logger.Error(ex, "Error during receiving");
}
}
/// <inheritdoc/>
public void Send(CommittedEventStream committedEventStream)
{
_bridge.Send(committedEventStream);
}
public BoundedContextListener(
KafkaConnectionString connectionString,
ListenerConfiguration configuration,
IEventConverter eventConverter,
IUncommittedEventStreamCoordinator uncommittedEventStreamCoordinator,
ISerializer serializer,
ILogger logger,
IApplicationResourceIdentifierConverter applicationResourceIdentifierConverter,
IImplementationsOf <IEvent> eventTypes,
IEventStore eventStore,
IEventEnvelopes eventEnvelopes,
IEventSequenceNumbers eventSequenceNumbers,
IEventSourceVersions eventSourceVersions,
ICommittedEventStreamBridge committedEventStreamBridge)
{
_serializer = serializer;
_eventConverter = eventConverter;
_uncommittedEventStreamCoordinator = uncommittedEventStreamCoordinator;
_logger = logger;
_applicationResourceIdentifierConverter = applicationResourceIdentifierConverter;
_eventTypes = eventTypes;
_eventSequenceNumbers = eventSequenceNumbers;
_eventStore = eventStore;
_eventEnvelopes = eventEnvelopes;
_eventSourceVersions = eventSourceVersions;
_committedEventStreamBridge = committedEventStreamBridge;
logger.Information($"Listening on topic '{configuration.Topic}' from '{connectionString}'");
var config = new Dictionary <string, object>
{
{ "bootstrap.servers", connectionString },
{ "group.id", "simple-consumer" },
{ "enable.auto.commit", true },
{ "auto.commit.interval.ms", 1000 },
{
"default.topic.config",
new Dictionary <string, object>()
{
{ "auto.offset.reset", "smallest" }
}
}
};
_consumer = new Consumer <Ignore, string>(config, null, new StringDeserializer(Encoding.UTF8));
_consumer.Assign(new [] { new TopicPartition(configuration.Topic, 0) });
_consumer.OnMessage += (_, msg) =>
{
try
{
logger.Trace($"Message received '{msg.Value}'");
var raw = _serializer.FromJson <dynamic[]>(msg.Value);
foreach (var rawContentAndEnvelope in raw)
{
var eventSourceId = (EventSourceId)Guid.Parse(rawContentAndEnvelope.Content.EventSourceId.ToString());
var eventIdentifier = _applicationResourceIdentifierConverter.FromString(rawContentAndEnvelope.Envelope.Event.ToString());
var version = EventSourceVersion.FromCombined((double)rawContentAndEnvelope.Envelope.Version);
var correlationId = (TransactionCorrelationId)Guid.Parse(rawContentAndEnvelope.Envelope.CorrelationId.ToString());
CorrelationId = correlationId;
_logger.Trace($"Received event of with resource name '{eventIdentifier.Resource.Name}' from '{eventSourceId}' with version '{version}' in correlation '{correlationId}'");
var eventType = _eventTypes.SingleOrDefault(et => et.Name == eventIdentifier.Resource.Name);
if (eventType != null)
{
_logger.Trace("Matching Event Type : " + eventType.AssemblyQualifiedName);
var @event = Activator.CreateInstance(eventType, eventSourceId) as IEvent;
_serializer.FromJson(@event, rawContentAndEnvelope.Content.ToString());
var eventSource = new ExternalSource(eventSourceId);
var uncommittedEventStream = new UncommittedEventStream(eventSource);
uncommittedEventStream.Append(@event, version);
_logger.Information($"Committing uncommitted event stream with correlationId '{correlationId}'");
var envelopes = _eventEnvelopes.CreateFrom(eventSource, uncommittedEventStream.EventsAndVersion);
var envelopesAsArray = envelopes.ToArray();
var eventsAsArray = uncommittedEventStream.ToArray();
_logger.Trace("Create an array of events and envelopes");
var eventsAndEnvelopes = new List <EventAndEnvelope>();
for (var eventIndex = 0; eventIndex < eventsAsArray.Length; eventIndex++)
{
var envelope = envelopesAsArray[eventIndex];
var currentEvent = eventsAsArray[eventIndex];
eventsAndEnvelopes.Add(new EventAndEnvelope(
envelope
.WithTransactionCorrelationId(correlationId)
.WithSequenceNumber(_eventSequenceNumbers.Next())
.WithSequenceNumberForEventType(_eventSequenceNumbers.NextForType(envelope.Event)),
currentEvent
));
}
_logger.Trace("Committing events to event store");
_eventStore.Commit(eventsAndEnvelopes);
_logger.Trace($"Set event source versions for the event source '{envelopesAsArray[0].EventSource}' with id '{envelopesAsArray[0].EventSourceId}'");
_eventSourceVersions.SetFor(envelopesAsArray[0].EventSource, envelopesAsArray[0].EventSourceId, envelopesAsArray[envelopesAsArray.Length - 1].Version);
_logger.Trace("Create a committed event stream");
var committedEventStream = new CommittedEventStream(uncommittedEventStream.EventSourceId, eventsAndEnvelopes);
_committedEventStreamBridge.Send(committedEventStream);
CorrelationId = Guid.Empty;
}
}
}
catch (Exception ex)
{
_logger.Error(ex, "Error during receiving");
}
};
}
/// <inheritdoc/>
public void Send(CommittedEventStream committedEventStream)
{
_logger.Trace("Sending committed event stream");
_bridge.Send(committedEventStream);
}