private ClientMessage.ReadStreamEventsForwardCompleted ReadStreamEventsForward(ClientMessage.ReadStreamEventsForward msg)
{
var lastCommitPosition = _readIndex.LastCommitPosition;
try
{
if (msg.ValidationStreamVersion.HasValue && _readIndex.GetLastStreamEventNumber(msg.EventStreamId) == msg.ValidationStreamVersion)
{
return(NoData(msg, ReadStreamResult.NotModified, lastCommitPosition));
}
var access = _readIndex.CheckStreamAccess(msg.EventStreamId, StreamAccessType.Read, msg.User);
if (!access.Granted)
{
return(NoData(msg, ReadStreamResult.AccessDenied, lastCommitPosition));
}
var result = _readIndex.ReadStreamEventsForward(msg.EventStreamId, msg.FromEventNumber, msg.MaxCount);
CheckEventsOrder(msg, result);
var resolvedPairs = ResolveLinkToEvents(result.Records, msg.ResolveLinkTos, msg.User);
if (resolvedPairs == null)
{
return(NoData(msg, ReadStreamResult.AccessDenied, lastCommitPosition));
}
return(new ClientMessage.ReadStreamEventsForwardCompleted(
msg.CorrelationId, msg.EventStreamId, msg.FromEventNumber, msg.MaxCount,
(ReadStreamResult)result.Result, resolvedPairs, result.Metadata, access.Public, string.Empty,
result.NextEventNumber, result.LastEventNumber, result.IsEndOfStream, lastCommitPosition));
}
catch (Exception exc)
{
Log.ErrorException(exc, "Error during processing ReadStreamEventsForward request.");
return(NoData(msg, ReadStreamResult.Error, lastCommitPosition, exc.Message));
}
}
