private async Task <AsyncEventQueue> GetOrCreateQueueAsync(string queueName, long?lastSequenceNumberProcessed)
{
AsyncEventQueue queue = await GetQueueAsync(queueName);
if (queue == null)
{
queue = new AsyncEventQueue(queueName, lastSequenceNumberProcessed);
crudRepository.Add(queue);
}
return(queue);
}
public async Task DequeueEventAsync(Guid asyncEventQueueRecordId)
{
QueuedAsyncEvent queuedEvent = await crudRepository.FindAsync <QueuedAsyncEvent>(asyncEventQueueRecordId);
if (queuedEvent != null)
{
AsyncEventQueue queue = await GetOrCreateQueueAsync(queuedEvent.QueueId, null);
if (queuedEvent.SequenceNumber != null)
{
queue.LastSequenceNumberProcessed = queuedEvent.SequenceNumber;
}
crudRepository.Remove(queuedEvent);
}
}
public async Task <IReadOnlyCollection <IAsyncEventQueueRecord> > GetQueueEventsAsync(string queueName)
{
AsyncEventQueue queue = await GetQueueAsync(queueName);
if (queue == null)
{
return(new List <IAsyncEventQueueRecord>());
}
var events = (await QueryQueuedEvents()
.Where(x => x.QueueId == queue.Id)
.ToListAsync(crudRepository))
.Select(SelectRecordFromQueuedEvent)
.ToList();
return(events);
}
public async Task <IAsyncEventQueueState> GetQueueStateAsync(string queueName)
{
AsyncEventQueue queue = await GetQueueAsync(queueName);
return(queue); //can be null
}
protected async Task <List <QueuedAsyncEvent> > EnqueueEventsToRepositoryAsync()
{
var eventStoreEvents = eventsToQueues.Where(x =>
(x.Key as IEventStoreEventMessage)?.Record is EventStoreRecordAdapter).ToArray();
var externalEvents = eventsToQueues.Except(eventStoreEvents).ToArray();
var queuedEvents = new List <QueuedAsyncEvent>();
//external
if (externalEvents.Length > 0)
{
foreach (var externalEvent in externalEvents)
{
externalEventStore.PushEvent(externalEvent.Key);
}
var externalEventRecords = await externalEventStore.CommitAsync();
foreach (var externalEventRecord in externalEventRecords)
{
if (externalEventRecord.IsDispatchedToAsyncQueues)
{
continue;
}
externalEventRecord.MarkDispatchedToAsyncQueues();
var sequences = externalEvents.First(x => x.Key.Metadata.GetEventId() == externalEventRecord.Id).Value;
foreach (var sequence in sequences)
{
AsyncEventQueue queue = await GetOrCreateQueueAsync(sequence.SequenceName, null);
QueuedAsyncEvent queuedEvent = new QueuedAsyncEvent(queue.Id, externalEventRecord, sequence.EventSequenceNumber);
crudRepository.Add(queuedEvent);
queuedEvents.Add(queuedEvent);
}
}
}
//event store
var allQueueNames = new HashSet <string>();
foreach (var eventToQueues in eventStoreEvents)
{
foreach (var sequence in eventToQueues.Value)
{
allQueueNames.Add(sequence.SequenceName);
}
}
if (allQueueNames.Count > 10)
{
await LoadQueuesAsync(allQueueNames.ToArray());
}
foreach (var eventToQueues in eventStoreEvents)
{
var storeMessage = (IEventStoreEventMessage)eventToQueues.Key;
var eventStreamRow = ((EventStoreRecordAdapter)storeMessage.Record).EventStreamRow;
if (eventStreamRow.IsDispatchedToAsyncQueues)
{
continue;
}
eventStreamRow.MarkDispatchedToAsyncQueues();
if (!crudRepository.IsAttached(eventStreamRow))
{
crudRepository.Attach(eventStreamRow);
crudRepository.SetEntityState(eventStreamRow, EntityState.Modified);
}
foreach (var sequence in eventToQueues.Value)
{
AsyncEventQueue queue = await GetOrCreateQueueAsync(sequence.SequenceName, null);
QueuedAsyncEvent queuedEvent = new QueuedAsyncEvent(queue.Id, eventStreamRow, sequence.EventSequenceNumber);
crudRepository.Add(queuedEvent);
queuedEvents.Add(queuedEvent);
}
}
eventsToQueues.Clear();
return(queuedEvents);
}