private async Task CommitEventsAsync(FilesEventPersistence persistence)
{
var events = Enumerable.Range(0, NumberOfEventsPerBatch)
.Select(i => new ThingyPingEvent(PingId.New))
.ToList();
await RetryAsync(async() =>
{
var version = await GetVersionAsync(persistence).ConfigureAwait(false);
var serializedEvents = from aggregateEvent in events
let metadata = new Metadata
{
AggregateSequenceNumber = ++version
}
let serializedEvent = _serializer.Serialize(aggregateEvent, metadata)
select serializedEvent;
var readOnlyEvents = new ReadOnlyCollection <SerializedEvent>(serializedEvents.ToList());
await persistence
.CommitEventsAsync(ThingyId, readOnlyEvents, CancellationToken.None)
.ConfigureAwait(false);
})
.ConfigureAwait(false);
}
private static async Task <int> GetVersionAsync(FilesEventPersistence persistence)
{
var existingEvents = await persistence.LoadCommittedEventsAsync(
ThingyId,
1,
CancellationToken.None).ConfigureAwait(false);
int version = existingEvents.LastOrDefault()?.AggregateSequenceNumber ?? 0;
return(version);
}