public void TestCaptureOrder()
{
// post source ints
var intSource = new BufferBlock <int>();
intSource.Post(1);
intSource.Post(2);
intSource.Post(99);
intSource.Post(98);
intSource.Complete();
// capture source order
var orderedInts = OrderingBlock.CaptureOrder <int, long, long>(
intSource, intValue => (long)intValue);
// post longs to combine, in reverse of original order
var longSource = new BufferBlock <long>();
longSource.Post(99);
longSource.Post(98);
longSource.Post(2);
longSource.Post(1);
longSource.Complete();
// apply source order
var orderedLongs = orderedInts.ApplyOrder(longSource, longValue => longValue);
// verify the original order was preserved
CollectionAssert.AreEqual(new long[] { 1, 2, 99, 98 }, orderedLongs.ToEnumerable().ToList());
}
private IEnumerable <QuizInfoForDb> CreateQuizInfoForDb(OrderingBlock orderingBlock, IGrouping <string, QuizAnswer> answers)
{
var ans = answers.Select(x => x.ItemId).ToList()
.Select(x => new QuizInfoForDb
{
QuizId = orderingBlock.Id,
IsRightAnswer = true,
ItemId = x,
Text = null,
QuizType = typeof(OrderingBlock),
QuizBlockScore = 0,
QuizBlockMaxScore = orderingBlock.MaxScore
}).ToList();
var isRightQuizBlock = answers.Count() == orderingBlock.Items.Length &&
answers.Zip(orderingBlock.Items, (answer, item) => answer.ItemId == item.GetHash()).All(x => x);
var blockScore = isRightQuizBlock ? orderingBlock.MaxScore : 0;
foreach (var info in ans)
{
info.QuizBlockScore = blockScore;
}
return(ans);
}
public static ISourceBlock <DecodedBlockTx> LookAhead(ISourceBlock <DecodedBlockTx> blockTxes, IDeferredChainStateCursor deferredChainStateCursor, CancellationToken cancelToken = default(CancellationToken))
{
// capture the original block txes order
var orderedBlockTxes = OrderingBlock.CaptureOrder <DecodedBlockTx, DecodedBlockTx, int>(
blockTxes, blockTx => blockTx.Index, cancelToken);
// queue each utxo entry to be warmed up: each input's previous transaction, and each new transaction
var queueUnspentTxLookup = InitQueueUnspentTxLookup(cancelToken);
orderedBlockTxes.LinkTo(queueUnspentTxLookup, new DataflowLinkOptions {
PropagateCompletion = true
});
// warm up each uxto entry
var warmupUtxo = InitWarmupUtxo(deferredChainStateCursor, cancelToken);
queueUnspentTxLookup.LinkTo(warmupUtxo, new DataflowLinkOptions {
PropagateCompletion = true
});
// return the block txes with warmed utxo entries in original order
return(orderedBlockTxes.ApplyOrder(warmupUtxo, blockTx => blockTx.Index, cancelToken));
}
private static QuizAnswerInfo GetOrderingBlockAnswerInfo(IReadOnlyDictionary <string, List <UserQuiz> > answers, OrderingBlock block, int questionIndex)
{
IEnumerable <UserQuiz> userAnswers = new List <UserQuiz>();
UserQuiz firstAnswer = null;
if (answers.ContainsKey(block.Id))
{
userAnswers = answers[block.Id].Where(q => q.ItemId != null);
firstAnswer = userAnswers.FirstOrDefault();
}
var answersPositions = userAnswers.Select(
userAnswer => block.Items.FindIndex(i => i.GetHash() == userAnswer.ItemId)
).ToList();
return(new OrderingBlockAnswerInfo
{
Id = questionIndex.ToString(),
AnswersPositions = answersPositions,
Score = firstAnswer?.QuizBlockScore ?? 0,
MaxScore = firstAnswer?.QuizBlockMaxScore ?? 0,
});
}