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); }