public async Task <IAggregateUpdateResult <TExecutionResult> > UpdateAsync <TAggregate, TIdentity, TExecutionResult>(TIdentity id, ISourceId sourceId, Func <TAggregate, CancellationToken, Task <TExecutionResult> > updateAggregate, CancellationToken cancellationToken)
where TAggregate : class, IAggregateRoot <TIdentity>
where TIdentity : IIdentity
where TExecutionResult : IExecutionResult
{
var aggregateUpdateResult = await _transientFaultHandler.TryAsync(
async c =>
{
var aggregate = await LoadAsync <TAggregate, TIdentity>(id, c).ConfigureAwait(false);
if (aggregate.HasSourceId(sourceId))
{
throw new DuplicateOperationException(
sourceId,
id,
$"Aggregate '{typeof(TAggregate).PrettyPrint()}' has already had operation '{sourceId}' performed");
}
cancellationToken = _cancellationConfiguration.Limit(cancellationToken, CancellationBoundary.BeforeUpdatingAggregate);
var result = await updateAggregate(aggregate, c).ConfigureAwait(false);
if (!result.IsSuccess)
{
_logger.LogDebug(
"Execution failed on aggregate {AggregateType}, disregarding any events emitted",
typeof(TAggregate).PrettyPrint());
return(new AggregateUpdateResult <TExecutionResult>(result, null));
}
cancellationToken = _cancellationConfiguration.Limit(cancellationToken, CancellationBoundary.BeforeCommittingEvents);
var domainEvents = await aggregate.CommitAsync(
_eventJsonSerializer,
sourceId,
cancellationToken)
.ConfigureAwait(false);
return(new AggregateUpdateResult <TExecutionResult>(result, domainEvents));
},
Label.Named("aggregate-update"),
cancellationToken)
.ConfigureAwait(false);
if (aggregateUpdateResult.Result.IsSuccess &&
aggregateUpdateResult.DomainEvents.Any())
{
var domainEventPublisher = _serviceProvider.GetRequiredService <IDomainEventPublisher>();
await domainEventPublisher.PublishAsync(
aggregateUpdateResult.DomainEvents,
cancellationToken)
.ConfigureAwait(false);
}
return(aggregateUpdateResult);
}
public async Task PublishAsync(
IReadOnlyCollection <IDomainEvent> domainEvents,
CancellationToken cancellationToken)
{
cancellationToken = _cancellationConfiguration.Limit(cancellationToken, CancellationBoundary.BeforeUpdatingReadStores);
await PublishToReadStoresAsync(domainEvents, cancellationToken).ConfigureAwait(false);
cancellationToken = _cancellationConfiguration.Limit(cancellationToken, CancellationBoundary.BeforeNotifyingSubscribers);
await PublishToSubscribersOfAllEventsAsync(domainEvents, cancellationToken).ConfigureAwait(false);
// Update subscriptions AFTER read stores have been updated
await PublishToSynchronousSubscribersAsync(domainEvents, cancellationToken).ConfigureAwait(false);
await PublishToAsynchronousSubscribersAsync(domainEvents, cancellationToken).ConfigureAwait(false);
await PublishToSagasAsync(domainEvents, cancellationToken).ConfigureAwait(false);
}