public IEnumerable <Tuple <ChainedBlock, Block> > PreviousBlocksLookAhead(ChainedBlock firstBlock)
{
using (var cancelToken = new CancellationTokenSource())
{
foreach (var tuple in LookAheadMethods.LookAhead(() => PreviousBlocks(firstBlock), cancelToken.Token))
{
yield return(tuple);
}
}
}
public IEnumerable <Tuple <Block, ChainedBlock> > BlockLookAhead(IList <UInt256> blockHashes)
{
var blockLookAhead = LookAheadMethods.LookAhead(
() => blockHashes.Select(blockHash => this.CacheContext.GetBlock(blockHash, saveInCache: false)),
this.shutdownToken);
var chainedBlockLookAhead = LookAheadMethods.LookAhead(
() => blockHashes.Select(blockHash => this.CacheContext.GetChainedBlock(blockHash, saveInCache: false)),
this.shutdownToken);
return(blockLookAhead.Zip(chainedBlockLookAhead, (block, chainedBlock) => Tuple.Create(block, chainedBlock)));
}
public IEnumerable <Tuple <Block, ChainedBlock /*, ImmutableDictionary<UInt256, Transaction>*/> > BlockAndTxLookAhead(IList <UInt256> blockHashes)
{
var blockLookAhead = LookAheadMethods.LookAhead(
() => blockHashes.Select(
blockHash =>
{
var block = new MethodTimer(false).Time("GetBlock", () =>
this.CacheContext.GetBlock(blockHash, saveInCache: false));
this.CacheContext.TransactionCache.CacheBlock(block);
//var transactionsBuilder = ImmutableDictionary.CreateBuilder<UInt256, Transaction>();
//var inputTxHashList = block.Transactions.Skip(1).SelectMany(x => x.Inputs).Select(x => x.PreviousTxOutputKey.TxHash).Distinct();
//// pre-cache input transactions
////Parallel.ForEach(inputTxHashList, inputTxHash =>
//foreach (var inputTxHash in inputTxHashList)
//{
// Transaction inputTx;
// if (this.CacheContext.TransactionCache.TryGetValue(inputTxHash, out inputTx, saveInCache: false))
// {
// transactionsBuilder.Add(inputTxHash, inputTx);
// }
//}
//return Tuple.Create(block, transactionsBuilder.ToImmutable());
return(block);
}),
this.shutdownToken);
var chainedBlockLookAhead = LookAheadMethods.LookAhead(
() => blockHashes.Select(blockHash => this.CacheContext.GetChainedBlock(blockHash, saveInCache: false)),
this.shutdownToken);
return(blockLookAhead.Zip(chainedBlockLookAhead, (block, chainedBlock) => Tuple.Create(block, chainedBlock)));
}
