private Optional <Aggregate> GetAggregateFromChangeTrackerIfExits(string identifier)
{
Aggregate existingAggregate;
_changeTracker.TryGet(identifier, out existingAggregate);
return(new Optional <Aggregate>(existingAggregate));
}
public async Task <IExecutionResult> TakeSnapshotAsync(string stream)
{
Optional <TAggregateRoot> root = await _rootRepository.GetAsync(stream);
root.ThrowsIf(r => !r.HasValue, new AggregateNotFoundException(stream));
_changeTracker.TryGet(stream, out Aggregate aggregate);
var serializedState = _eventSerializer.Serialize(root.Value.TakeSnapshot());
var newSnapshot = new SnapshotDocument(aggregate.Identifier, serializedState, aggregate.ExpectedVersion.Value.ToString(), null, typeof(TSnapshot).TypeQualifiedName());
await _cosmosDbClient.CreateItemAsync(newSnapshot,
_cosmosDBConfigurations.SnapshotContainerName).ConfigureAwait(false);
return(ExecutionResult.Success);
}