private void CreateAndDistributeCombinedBlock(RegistryFullBlock transactionsFullBlockMostConfident)
{
lock (_synchronizationContext)
{
SynchronizationRegistryCombinedBlock lastCombinedBlock = (SynchronizationRegistryCombinedBlock)_synchronizationChainDataService.GetAllLastBlocksByType(BlockTypes.Synchronization_RegistryCombinationBlock).Single();
byte[] prevHash = lastCombinedBlock != null?_defaultTransactionHashCalculation.CalculateHash(lastCombinedBlock.RawData) : new byte[Globals.DEFAULT_HASH_SIZE];
byte[] fullBlockHash = _defaultTransactionHashCalculation.CalculateHash(transactionsFullBlockMostConfident?.RawData ?? new byte[Globals.DEFAULT_HASH_SIZE]);
//TODO: For initial POC there will be only one participant at Synchronization Layer, thus combination of FullBlocks won't be implemented fully
SynchronizationRegistryCombinedBlock synchronizationRegistryCombinedBlock = new SynchronizationRegistryCombinedBlock
{
SyncBlockHeight = _synchronizationContext.LastBlockDescriptor?.BlockHeight ?? 0,
PowHash = _powCalculation.CalculateHash(_synchronizationContext.LastBlockDescriptor?.Hash ?? new byte[Globals.DEFAULT_HASH_SIZE]),
BlockHeight = ++_synchronizationContext.LastRegistrationCombinedBlockHeight,
HashPrev = prevHash,
ReportedTime = DateTime.Now,
BlockHashes = new byte[][] { fullBlockHash }
};
ISerializer combinedBlockSerializer = _signatureSupportSerializersFactory.Create(synchronizationRegistryCombinedBlock);
combinedBlockSerializer.FillBodyAndRowBytes();
IEnumerable <IKey> storageLayerKeys = _nodesResolutionService.GetStorageNodeKeys(combinedBlockSerializer);
_communicationService.PostMessage(storageLayerKeys, combinedBlockSerializer);
_synchronizationChainDataService.Add(synchronizationRegistryCombinedBlock);
}
}
private void ProcessStateBlocks(CancellationToken ct)
{
foreach (RegistryRegisterBlock transactionRegisterBlock in _registryStateBlocks.GetConsumingEnumerable(ct))
{
//TODO: add logic that will check whether received Transaction Header was already stored into blockchain
bool isNew = _registryMemPool.EnqueueTransactionWitness(transactionRegisterBlock);
if (isNew)
{
IPacketProvider packetProvider = _rawPacketProvidersFactory.Create(transactionRegisterBlock);
_udpCommunicationService.PostMessage(_registryGroupState.GetAllNeighbors(), packetProvider);
}
}
}
private void SendTransactionsBlocks(Tuple <RegistryFullBlock, RegistryShortBlock> tuple)
{
RegistryFullBlock transactionsFullBlock = tuple.Item1;
RegistryShortBlock transactionsShortBlock = tuple.Item2;
ISerializer fullBlockSerializer = _signatureSupportSerializersFactory.Create(transactionsFullBlock);
ISerializer shortBlockSerializer = _signatureSupportSerializersFactory.Create(transactionsShortBlock);
shortBlockSerializer.FillBodyAndRowBytes();
transactionsFullBlock.ShortBlockHash = _hashCalculation.CalculateHash(transactionsShortBlock.RawData);
_logger.Debug($"Sending FullBlock with {transactionsFullBlock.TransactionHeaders.Count} transactions and ShortBlock with {transactionsShortBlock.TransactionHeaderHashes.Count} hashes at round {transactionsFullBlock.BlockHeight}");
_tcpCommunicationService.PostMessage(_registryGroupState.SyncLayerNode, fullBlockSerializer);
_tcpCommunicationService.PostMessage(_registryGroupState.GetAllNeighbors(), shortBlockSerializer);
}
private void SendTransactionsBlocks(RegistryFullBlock transactionsFullBlock, RegistryShortBlock transactionsShortBlock)
{
ISerializer fullBlockSerializer = _serializersFactory.Create(transactionsFullBlock);
ISerializer shortBlockSerializer = _serializersFactory.Create(transactionsShortBlock);
shortBlockSerializer.SerializeBody();
_nodeContext.SigningService.Sign(transactionsShortBlock);
shortBlockSerializer.SerializeFully();
transactionsFullBlock.ShortBlockHash = _hashCalculation.CalculateHash(transactionsShortBlock.RawData);
fullBlockSerializer.SerializeBody();
_nodeContext.SigningService.Sign(transactionsFullBlock);
_logger.Debug($"Sending FullBlock with {transactionsFullBlock.StateWitnesses.Length + transactionsFullBlock.UtxoWitnesses.Length} transactions and ShortBlock with {transactionsShortBlock.WitnessStateKeys.Length + transactionsShortBlock.WitnessUtxoKeys.Length} keys at round {transactionsFullBlock.BlockHeight}");
_tcpCommunicationService.PostMessage(_registryGroupState.SyncLayerNode, fullBlockSerializer);
_tcpCommunicationService.PostMessage(_registryGroupState.GetAllNeighbors(), shortBlockSerializer);
}
public void DeferredBroadcast(ushort round, Action onBroadcasted)
{
if (_synchronizationContext == null)
{
return;
}
//if (_synchronizationContext.LastBlockDescriptor != null && _synchronizationContext.LastBlockDescriptor.BlockHeight - 1 > _lastLaunchedSyncBlockOrder)
//{
// _syncProducingCancellation?.Cancel();
// _syncProducingCancellation = null;
//}
int delay = 1;
if (_syncProducingCancellation != null)
{
delay = Math.Max((int)(60000 * round - (DateTime.Now - (_synchronizationContext.LastBlockDescriptor?.UpdateTime ?? DateTime.Now)).TotalMilliseconds), 0);
}
_syncProducingCancellation = new CancellationTokenSource();
//if (delay > 0)
{
Task.Delay(delay, _syncProducingCancellation.Token)
.ContinueWith(t =>
{
try
{
SynchronizationDescriptor synchronizationDescriptor = _synchronizationContext.LastBlockDescriptor;
SynchronizationProducingBlock synchronizationBlock = new SynchronizationProducingBlock
{
SyncBlockHeight = synchronizationDescriptor?.BlockHeight ?? 0,
BlockHeight = (synchronizationDescriptor?.BlockHeight ?? 0) + 1,
ReportedTime = synchronizationDescriptor?.MedianTime.AddMinutes(1) ?? DateTime.Now,
Round = round,
HashPrev = synchronizationDescriptor?.Hash ?? new byte[Globals.DEFAULT_HASH_SIZE],
PowHash = _proofOfWorkCalculation.CalculateHash(synchronizationDescriptor?.Hash ?? new byte[Globals.DEFAULT_HASH_SIZE])
};
using (ISerializer serializer = _serializersFactory.Create(synchronizationBlock))
{
serializer.SerializeBody();
_nodeContext.SigningService.Sign(synchronizationBlock);
_communicationService.PostMessage(_synchronizationGroupState.GetAllNeighbors(), serializer);
_lastLaunchedSyncBlockOrder = synchronizationBlock.BlockHeight;
}
}
finally
{
onBroadcasted.Invoke();
}
}, _syncProducingCancellation.Token, TaskContinuationOptions.NotOnCanceled, TaskScheduler.Current);
}
}
private void ProcessBlocks(CancellationToken ct)
{
foreach (SynchronizationConfirmedBlock synchronizationBlock in _synchronizationBlocks.GetConsumingEnumerable(ct))
{
if ((_synchronizationContext.LastBlockDescriptor?.BlockHeight ?? 0) >= synchronizationBlock.BlockHeight)
{
continue;
}
_synchronizationContext.UpdateLastSyncBlockDescriptor(new SynchronizationDescriptor(synchronizationBlock.BlockHeight, _hashCalculation.CalculateHash(synchronizationBlock.RawData), synchronizationBlock.ReportedTime, DateTime.Now, synchronizationBlock.Round));
_chainDataService.Add(synchronizationBlock);
IPacketProvider packetProvider = _rawPacketProvidersFactory.Create(synchronizationBlock);
_communicationService.PostMessage(_neighborhoodState.GetAllNeighbors(), packetProvider);
}
}
private void BroadcastConfirmation(ulong height, ushort round, byte[] prevHash, ulong syncBlockHeight, byte[] powValue)
{
//List<SynchronizationBlockRetransmissionV1> retransmittedSyncBlocks = _synchronizationBlocksByHeight[height].Where(r => _nodeContext.SyncGroupParticipants.Any(p => p.Key == r.Key)).Select(kv => kv.Value.First()).OrderBy(s => s.ConfirmationPublicKey.ToHexString()).ToList();
SynchronizationConfirmedBlock synchronizationConfirmedBlock = new SynchronizationConfirmedBlock
{
BlockHeight = height,
HashPrev = prevHash, //TODO: does not seems too secure
SyncBlockHeight = syncBlockHeight, //TODO: does not seems too secure
PowHash = powValue, //TODO: does not seems too secure
Round = round,
PublicKeys = new byte[0][], // retransmittedSyncBlocks.Select(b => b.ConfirmationPublicKey).ToArray(),
Signatures = new byte[0][] //retransmittedSyncBlocks.Select(b => b.ConfirmationSignature).ToArray()
};
ISerializer confirmationBlockSerializer = _signatureSupportSerializersFactory.Create(synchronizationConfirmedBlock);
_communicationService.PostMessage(_neighborhoodState.GetAllNeighbors(), confirmationBlockSerializer);
}
private void ProcessBlocks(CancellationToken ct)
{
foreach (ITransactionRegistryBlock transactionRegisterBlock in _registrationBlocks.GetConsumingEnumerable(ct))
{
if (_timer == null)
{
_timer = new Timer(new TimerCallback(TimerElapsed), _registryMemPool, 120000, Timeout.Infinite);
}
//TODO: add logic that will check whether received Transaction Header was already stored into blockchain
bool isNew = _registryMemPool.EnqueueTransactionRegisterBlock(transactionRegisterBlock);
if (isNew)
{
IPacketProvider packetProvider = _rawPacketProvidersFactory.Create(transactionRegisterBlock);
_udpCommunicationService.PostMessage(_registryGroupState.GetAllNeighbors(), packetProvider);
}
}
}
private void SendConfidence(RegistryConfidenceBlock transactionsRegistryConfidenceBlock)
{
ISerializer confidenceBlockSerializer = _signatureSupportSerializersFactory.Create(transactionsRegistryConfidenceBlock);
_tcpCommunicationService.PostMessage(_registryGroupState.SyncLayerNode, confidenceBlockSerializer);
}