private void OfferMessageToLink(TargetLink link)
{
List <ResourceEvent <TResource> > msg;
lock (_lock)
{
if (!_queue.TryPeek(out msg))
{
return; // queue is empty
}
}
var header = new DataflowMessageHeader(++_msgId);
link.LastOfferedMessageReply = link.Target.OfferMessage(header, msg, this, true);
if (link.LastOfferedMessageReply == DataflowMessageStatus.DecliningPermanently)
{
_targets.Remove(link);
}
}
public IDisposable LinkTo(ITargetBlock <List <ResourceEvent <TResource> > > target, DataflowLinkOptions linkOptions)
{
//todo: add support for max messages
lock (_lock)
{
var link = new TargetLink
{
Target = target,
LinkOptions = linkOptions,
LastOfferedMessageReply = DataflowMessageStatus.NotAvailable
};
if (linkOptions.Append)
{
_targets.Add(link);
}
else
{
_targets.Insert(0, link);
}
OfferMessageToLink(link);
return(Disposable.Create(() => _targets.Remove(link)));
}
}
