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 EventDataModel
{
AggregateId = id.Value,
AggregateName = e.Metadata[MetadataKeys.AggregateName],
BatchId = Guid.Parse(e.Metadata[MetadataKeys.BatchId]),
Data = e.SerializedData,
Metadata = e.SerializedMetadata,
AggregateSequenceNumber = e.AggregateSequenceNumber,
})
.ToList();
_log.Verbose(
"Committing {0} events to MSSQL event store for entity with ID '{1}'",
eventDataModels.Count,
id);
const string sql = @"
INSERT INTO
EventFlow
(BatchId, AggregateId, AggregateName, Data, Metadata, AggregateSequenceNumber)
OUTPUT CAST(INSERTED.GlobalSequenceNumber as bigint)
SELECT
BatchId, AggregateId, AggregateName, Data, Metadata, AggregateSequenceNumber
FROM
@rows
ORDER BY AggregateSequenceNumber ASC";
IReadOnlyCollection <long> ids;
try
{
ids = await _connection.InsertMultipleAsync <long, EventDataModel>(
Label.Named("mssql-insert-events"),
cancellationToken,
sql,
eventDataModels)
.ConfigureAwait(false);
}
catch (SqlException exception)
{
if (exception.Number == 2601)
{
_log.Verbose(
"MSSQL event insert detected an optimistic concurrency exception for entity with ID '{0}'",
id);
throw new OptimisticConcurrencyException(exception.Message, exception);
}
throw;
}
eventDataModels = eventDataModels
.Zip(
ids,
(e, i) =>
{
e.GlobalSequenceNumber = i;
return(e);
})
.ToList();
return(eventDataModels);
}
protected override async Task <IReadOnlyCollection <ICommittedDomainEvent> > CommitEventsAsync <TAggregate>(string id, IReadOnlyCollection <SerializedEvent> serializedEvents, CancellationToken cancellationToken)
{
var batchId = Guid.NewGuid();
var aggregateType = typeof(TAggregate);
var aggregateName = aggregateType.Name.Replace("Aggregate", string.Empty);
var eventDataModels = serializedEvents
.Select((e, i) => new EventDataModel
{
AggregateId = id,
AggregateName = aggregateName,
BatchId = batchId,
Data = e.Data,
Metadata = e.Meta,
AggregateSequenceNumber = e.AggregateSequenceNumber,
})
.ToList();
Log.Verbose(
"Committing {0} events to MSSQL event store for aggregate {1} with ID '{2}'",
eventDataModels.Count,
aggregateType.Name,
id);
const string sql = @"
INSERT INTO
EventFlow
(BatchId, AggregateId, AggregateName, Data, Metadata, AggregateSequenceNumber)
OUTPUT CAST(INSERTED.GlobalSequenceNumber as bigint)
SELECT
BatchId, AggregateId, AggregateName, Data, Metadata, AggregateSequenceNumber
FROM
@rows";
IReadOnlyCollection <long> ids;
try
{
ids = await _connection.InsertMultipleAsync <long, EventDataModel>(
cancellationToken,
sql,
eventDataModels)
.ConfigureAwait(false);
}
catch (SqlException exception)
{
if (exception.Number == 2601)
{
throw new OptimisticConcurrencyException(exception.Message, exception);
}
throw;
}
eventDataModels = eventDataModels
.Zip(
ids,
(e, i) =>
{
e.GlobalSequenceNumber = i;
return(e);
})
.ToList();
return(eventDataModels);
}