public async Task <IReadOnlyCollection <ICommittedDomainEvent> > LoadCommittedEventsAsync(IIdentity id, int fromEventSequenceNumber, CancellationToken cancellationToken)
{
return(await MongoDbEventStoreCollection
.Find(model => model.AggregateId == id.Value && model.AggregateSequenceNumber >= fromEventSequenceNumber)
.ToListAsync(cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false));
}
public async Task <IReadOnlyCollection <ICommittedDomainEvent> > CommitEventsAsync(IIdentity id, IReadOnlyCollection <SerializedEvent> serializedEvents, CancellationToken cancellationToken)
{
if (!serializedEvents.Any())
{
return(new ICommittedDomainEvent[] { });
}
var eventDataModels = serializedEvents
.Select((e, i) => new MongoDbEventDataModel
{
_id = _mongoDbEventSequenceStore.GetNextSequence(_collectionName),
AggregateId = id.Value,
AggregateName = e.Metadata[MetadataKeys.AggregateName],
BatchId = Guid.Parse(e.Metadata[MetadataKeys.BatchId]),
Data = e.SerializedData,
Metadata = e.SerializedMetadata,
AggregateSequenceNumber = e.AggregateSequenceNumber
})
.OrderBy(x => x.AggregateSequenceNumber)
.ToList();
_log.Verbose("Committing {0} events to MongoDb event store for entity with ID '{1}'", eventDataModels.Count, id);
await MongoDbEventStoreCollection
.InsertManyAsync(eventDataModels, cancellationToken : cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
return(eventDataModels);
}
public async Task <IReadOnlyCollection <ICommittedDomainEvent> > CommitEventsAsync(IIdentity id, IReadOnlyCollection <SerializedEvent> serializedEvents, CancellationToken cancellationToken)
{
if (!serializedEvents.Any())
{
return(Array.Empty <ICommittedDomainEvent>());
}
var eventDataModels = serializedEvents
.Select((e, i) => new MongoDbEventDataModel
{
_id = DateTime.UtcNow.Ticks,
AggregateId = id.Value,
AggregateName = e.Metadata[MetadataKeys.AggregateName],
BatchId = Guid.Parse(e.Metadata[MetadataKeys.BatchId]),
Data = e.SerializedData,
Metadata = e.SerializedMetadata,
AggregateSequenceNumber = e.AggregateSequenceNumber
})
.OrderBy(x => x.AggregateSequenceNumber)
.ToList();
_log.Verbose("Committing {0} events to MongoDb event store for entity with ID '{1}'", eventDataModels.Count, id);
try
{
await MongoDbEventStoreCollection
.InsertManyAsync(eventDataModels, cancellationToken : cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
}
catch (MongoBulkWriteException e)
{
throw new OptimisticConcurrencyException(e.Message, e);
}
return(eventDataModels);
}
public async Task DeleteEventsAsync(IIdentity id, CancellationToken cancellationToken)
{
DeleteResult affectedRows = await MongoDbEventStoreCollection
.DeleteManyAsync(x => x.AggregateId == id.Value, cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
_log.Verbose("Deleted entity with ID '{0}' by deleting all of its {1} events", id, affectedRows.DeletedCount);
}
public async Task <AllCommittedEventsPage> LoadAllCommittedEvents(GlobalPosition globalPosition, int pageSize, CancellationToken cancellationToken)
{
long startPosition = globalPosition.IsStart
? 0
: long.Parse(globalPosition.Value);
long endPosition = startPosition + pageSize;
List <MongoDbEventDataModel> eventDataModels = await MongoDbEventStoreCollection
.Find(model => model._id >= startPosition && model._id <= endPosition)
.ToListAsync(cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
long nextPosition = eventDataModels.Any()
? eventDataModels.Max(e => e._id) + 1
: startPosition;
return(new AllCommittedEventsPage(new GlobalPosition(nextPosition.ToString()), eventDataModels));
}
public async Task <AllCommittedEventsPage> LoadAllCommittedEvents(GlobalPosition globalPosition, int pageSize, CancellationToken cancellationToken)
{
var startPosition = globalPosition.IsStart ? 0 : long.Parse(globalPosition.Value, CultureInfo.InvariantCulture);
var eventDataModels = await(await MongoDbEventStoreCollection
.FindAsync(model => model._id >= startPosition,
new FindOptions <MongoDbEventDataModel, MongoDbEventDataModel> {
Limit = pageSize
}, cancellationToken)
.ConfigureAwait(false))
.ToListAsync(cancellationToken)
.ConfigureAwait(continueOnCapturedContext: false);
var nextPosition = eventDataModels.Any()
? eventDataModels.Max(e => e._id) + 1
: startPosition;
return(new AllCommittedEventsPage(new GlobalPosition(nextPosition.ToString(CultureInfo.InvariantCulture)), eventDataModels));
}
