public static async Task <EventSourceEvent> ToEvent(this StreamMessage message, CancellationToken cancellationToken = default)
{
var typeName = message.Type;
var version = 0;
if (message.TryGetEventMetadata(Constants.VersionKey, out var metaVersion))
{
version = Convert.ToInt32(metaVersion, CultureInfo.InvariantCulture);
}
var eventType = EventCollection.GetEventType(typeName, version);
if (eventType == default || eventType == null)
{
throw new InvalidOperationException($"No Event Type found to deserialize message: {typeName} as version {version}");
}
var eventData = await message.GetJsonData(cancellationToken).ConfigureAwait(false);
var @event = Serializer.Deserialize(eventData, eventType);
if (!(@event is EventSourceEvent eventSourceEvent))
{
throw new InvalidOperationException(
$"Event Type found to deserialize message: {typeName} at version {version} is not of EventSourceEvent.");
}
eventSourceEvent.Position = message.Position;
return(eventSourceEvent);
}
public void ShouldGetCorrectEventType()
{
// Act
var type = EventCollection.GetEventType("Test", 100);
// Assert
type.ShouldNotBeNull();
type?.FullName.ShouldBe(typeof(TestEventType).FullName);
}