private void GetHighestSequenceNumber(AsyncWriteTarget.ReadHighestSequenceNr rhsn)
{
LinkedList<IPersistentRepresentation> list;
Sender.Tell(_messages.TryGetValue(rhsn.PersistenceId, out list)
? list.Last.Value.SequenceNr
: 0L);
}
private void Read(AsyncWriteTarget.ReplayMessages replay)
{
LinkedList<IPersistentRepresentation> list;
if (_messages.TryGetValue(replay.PersistenceId, out list))
{
var filtered = list
.Where(x => x.SequenceNr >= replay.FromSequenceNr && x.SequenceNr <= replay.ToSequenceNr)
.Take(replay.Max >= int.MaxValue ? int.MaxValue : (int)replay.Max);
foreach (var persistent in filtered)
{
Sender.Tell(persistent);
}
}
Sender.Tell(AsyncWriteTarget.ReplaySuccess.Instance);
}
private void Delete(AsyncWriteTarget.DeleteMessagesTo deleteCommand)
{
LinkedList<IPersistentRepresentation> list;
if (_messages.TryGetValue(deleteCommand.PersistenceId, out list))
{
var node = list.First;
if (deleteCommand.IsPermanent)
{
DeletePermanently(deleteCommand, node, list);
}
else
{
MarkAsDeleted(deleteCommand, node);
}
}
Sender.Tell(new object());
}
private static void MarkAsDeleted(AsyncWriteTarget.DeleteMessagesTo deleteCommand, LinkedListNode<IPersistentRepresentation> node)
{
while (node != null)
{
if (node.Value.SequenceNr <= deleteCommand.ToSequenceNr)
{
var curr = node.Value;
node.Value = curr.Update(sequenceNr: curr.SequenceNr,
persistenceId: curr.PersistenceId,
isDeleted: true,
sender: curr.Sender);
}
node = node.Next;
}
}
private void Add(AsyncWriteTarget.WriteMessages writeMessages)
{
foreach (var persistent in writeMessages.Messages)
{
var list = _messages.GetOrAdd(persistent.PersistenceId, new LinkedList<IPersistentRepresentation>());
list.AddLast(persistent);
}
Sender.Tell(new object());
}
private static void DeletePermanently(AsyncWriteTarget.DeleteMessagesTo deleteCommand, LinkedListNode<IPersistentRepresentation> node, LinkedList<IPersistentRepresentation> list)
{
while (node != null)
{
if (node.Value.SequenceNr <= deleteCommand.ToSequenceNr)
{
var deleted = node;
node = node.Next;
list.Remove(deleted);
}
else node = node.Next;
}
}
