private IMessageTree MergeTree(BlockingThreadSafeQueue<IMessageTree> trees)
{
int max = MAX_ATOMIC_MESSAGES - 1;
DefaultTransaction tran = new DefaultTransaction("_CatMergeTree", "_CatMergeTree", null);
tran.Status = CatConstants.SUCCESS;
tran.SetCompleted(true);
IMessageTree first;
trees.TryPeek(out first, false);
// Usually this should not happen, because it is in the same thread with ShouldMerge()
if (first == null)
{
return null;
}
// Set merge tree start time to the first massage's timestamp
tran.Timestamp = first.Message.Timestamp;
long lastTimestamp = 0;
long lastDuration = 0;
int estimatedByteSize = 0;
while (max >= 0) {
IMessageTree tree;
trees.TryDequeue(out tree, false);
if (tree != null)
{
tran.AddChild(tree.Message);
estimatedByteSize += tree.EstimatedByteSize;
if (first!=tree)
{
_messageIdFactory.Reuse(tree.MessageId);
}
lastTimestamp = tree.Message.Timestamp;
if (tree.Message is DefaultTransaction)
{
lastDuration = ((DefaultTransaction)tree.Message).DurationInMillis;
}
else
{
lastDuration = 0;
}
}
if (tree == null || max == 0) {
// Set merge tree end time to the last massage's end time
tran.DurationInMillis = (lastTimestamp - tran.Timestamp + lastDuration);
break;
}
max--;
}
((DefaultMessageTree) first).Message = tran;
estimatedByteSize += tran.EstimateByteSize();
first.EstimatedByteSize = estimatedByteSize;
return first;
}
public void markAsNotCompleted(DefaultTransaction transaction)
{
DefaultEvent evt = new DefaultEvent("cat", "BadInstrument");
evt.Status = "TransactionNotCompleted";
evt.SetCompleted(true);
transaction.AddChild(evt);
transaction.SetCompleted(true);
}