public async IAsyncEnumerable <IQueryResult> ExecuteAsync()
{
await using IAsyncEnumerator <object> enumerator =
_sourceStream.ReadEventsAsync().GetAsyncEnumerator(
_requestContext.RequestAborted);
while (await enumerator.MoveNextAsync().ConfigureAwait(false))
{
if (_requestContext.RequestAborted.IsCancellationRequested)
{
break;
}
yield return(await OnEvent(enumerator.Current).ConfigureAwait(false));
}
}
public IAsyncEnumerator <IQueryResult> GetAsyncEnumerator(
CancellationToken cancellationToken = default)
{
try
{
IAsyncEnumerator <object> eventStreamEnumerator =
_sourceStream.ReadEventsAsync()
.GetAsyncEnumerator(cancellationToken);
return(new SubscriptionEnumerator(
eventStreamEnumerator,
_onEvent,
_subscription,
_diagnosticEvents,
cancellationToken));
}
catch (Exception ex)
{
_diagnosticEvents.SubscriptionEventError(_subscription, ex);
return(new ErrorSubscriptionEnumerator());
}
}