public async Task ConsumeAsync(string eventType, ResolvedEvent resolvedEvent)
{
if (string.IsNullOrWhiteSpace(eventType))
{
throw new ArgumentException("Event type required", nameof(eventType));
}
if (_settings.ReadOnly)
{
_logger.Debug("Received {EventType} #{EventNumber} from {StreamName} (Original Event: #{OriginalEventNumber})",
resolvedEvent.Event.EventType,
resolvedEvent.Event.EventNumber,
resolvedEvent.Event.EventStreamId,
resolvedEvent.OriginalEventNumber
);
return;
}
var eventData = new EventData(
resolvedEvent.Event.EventId,
resolvedEvent.Event.EventType,
true,
resolvedEvent.Event.Data,
resolvedEvent.Event.Metadata
);
WriteResult result = default;
using (_logger.OperationAt(LogEventLevel.Debug).Time("Replicating {EventType} #{EventNumber} from {StreamName} (Original Event: #{OriginalEventNumber})",
resolvedEvent.Event.EventType,
resolvedEvent.Event.EventNumber,
resolvedEvent.Event.EventStreamId,
resolvedEvent.OriginalEventNumber))
using (DittoMetrics.IODuration.WithIOLabels("eventstore", "ditto-destination", "append_to_stream").NewTimer())
{
result = await _connection.AppendToStreamAsync(
resolvedEvent.Event.EventStreamId,
_settings.SkipVersionCheck?ExpectedVersion.Any : resolvedEvent.Event.EventNumber - 1,
eventData
);
}
if (_ttl && result.NextExpectedVersion == 0) // New stream created
{
await SetStreamMetadataAsync(resolvedEvent.Event.EventStreamId);
}
if (_settings.ReplicationThrottleInterval.GetValueOrDefault() > 0)
{
await Task.Delay(_settings.ReplicationThrottleInterval.Value);
}
}
