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Graph.cs
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// CypherNetwork by Matthew Hellyer is licensed under CC BY-NC-ND 4.0.
// To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-nd/4.0
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reactive;
using System.Reactive.Concurrency;
using System.Reactive.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Threading.Tasks.Dataflow;
using Blake3;
using CypherNetwork.Consensus;
using CypherNetwork.Consensus.Models;
using CypherNetwork.Extensions;
using CypherNetwork.Helper;
using CypherNetwork.Models;
using CypherNetwork.Models.Messages;
using CypherNetwork.Persistence;
using Dawn;
using MessagePack;
using Microsoft.IO;
using NBitcoin;
using Serilog;
using Spectre.Console;
using Block = CypherNetwork.Models.Block;
using Config = CypherNetwork.Consensus.Models.Config;
using Interpreted = CypherNetwork.Consensus.Models.Interpreted;
using Util = CypherNetwork.Helper.Util;
namespace CypherNetwork.Ledger;
/// <summary>
/// </summary>
public interface IGraph
{
Task<TransactionBlockIndexResponse> GetTransactionBlockIndexAsync(TransactionBlockIndexRequest transactionIndexRequest);
Task<BlockResponse> GetTransactionBlockAsync(TransactionIdRequest transactionIndexRequest);
Task<TransactionResponse> GetTransactionAsync(TransactionRequest transactionRequest);
Task<Block> GetPreviousBlockAsync();
Task<SafeguardBlocksResponse> GetSafeguardBlocksAsync(SafeguardBlocksRequest safeguardBlocksRequest);
Task<SaveBlockResponse> SaveBlockAsync(SaveBlockRequest saveBlockRequest);
Task<BlocksResponse> GetBlocksAsync(BlocksRequest blocksRequest);
Task PostAsync(BlockGraph blockGraph);
Task<BlockResponse> GetBlockAsync(BlockRequest blockRequest);
Task<BlockResponse> GetBlockByHeightAsync(BlockByHeightRequest blockByHeightRequest);
Task<VerifyResult> BlockHeightExistsAsync(BlockHeightExistsRequest blockHeightExistsRequest);
Task<VerifyResult> BlockExistsAsync(BlockExistsRequest blockExistsRequest);
byte[] HashTransactions(HashTransactionsRequest hashTransactionsRequest);
}
/// <summary>
/// </summary>
internal record SeenBlockGraph
{
public long Timestamp { get; } = Util.GetAdjustedTimeAsUnixTimestamp();
public ulong Round { get; init; }
public byte[] Hash { get; init; }
public byte[] Key { get; init; }
}
/// <summary>
/// </summary>
public sealed class Graph : ReceivedActor<BlockGraph>, IGraph, IDisposable
{
private class BlockGraphEventArgs : EventArgs
{
public BlockGraph BlockGraph { get; }
public BlockGraphEventArgs(BlockGraph blockGraph)
{
BlockGraph = blockGraph;
}
}
private readonly ICypherSystemCore _cypherSystemCore;
private readonly ILogger _logger;
private readonly IObservable<EventPattern<BlockGraphEventArgs>> _onRoundCompleted;
private readonly IDisposable _onRoundListener;
private readonly Caching<BlockGraph> _syncCacheBlockGraph = new();
private readonly Caching<Block> _syncCacheDelivered = new();
private readonly Caching<SeenBlockGraph> _syncCacheSeenBlockGraph = new();
private IDisposable _disposableHandelSeenBlockGraphs;
private bool _disposed;
private readonly SemaphoreSlim _slimDecideWinner = new(1, 1);
/// <summary>
/// </summary>
private EventHandler<BlockGraphEventArgs> _onRoundCompletedEventHandler;
/// <summary>
/// </summary>
/// <param name="cypherSystemCore"></param>
/// <param name="logger"></param>
public Graph(ICypherSystemCore cypherSystemCore, ILogger logger) : base(
new ExecutionDataflowBlockOptions { BoundedCapacity = 100, MaxDegreeOfParallelism = 2, EnsureOrdered = true })
{
_cypherSystemCore = cypherSystemCore;
_logger = logger.ForContext("SourceContext", nameof(Graph));
_onRoundCompleted = Observable.FromEventPattern<BlockGraphEventArgs>(ev => _onRoundCompletedEventHandler += ev,
ev => _onRoundCompletedEventHandler -= ev);
_onRoundListener = OnRoundListener();
Init();
}
/// <summary>
///
/// </summary>
/// <param name="blockGraph"></param>
protected override async Task OnReceiveAsync(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
if (_cypherSystemCore.Sync().Running) return;
if (blockGraph.Block.Round != NextRound()) return;
if (await BlockHeightExistsAsync(new BlockHeightExistsRequest(blockGraph.Block.Round)) != VerifyResult.Succeed) return;
if (!_syncCacheSeenBlockGraph.Contains(blockGraph.ToIdentifier()))
{
var identifier = blockGraph.ToIdentifier();
_syncCacheSeenBlockGraph.Add(identifier,
new SeenBlockGraph
{ Hash = blockGraph.Block.BlockHash, Round = blockGraph.Block.Round, Key = identifier });
await FinalizeAsync(blockGraph);
}
}
/// <summary>
/// </summary>
/// <param name="blockGraph"></param>
public new async Task PostAsync(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
await base.PostAsync(blockGraph);
}
/// <summary>
///
/// </summary>
/// <param name="transactionIndexRequest"></param>
/// <returns></returns>
public async Task<TransactionBlockIndexResponse> GetTransactionBlockIndexAsync(
TransactionBlockIndexRequest transactionIndexRequest)
{
Guard.Argument(transactionIndexRequest, nameof(transactionIndexRequest)).NotNull();
try
{
var unitOfWork = _cypherSystemCore.UnitOfWork();
var block = await unitOfWork.HashChainRepository.GetAsync(x =>
new ValueTask<bool>(x.Txs.Any(t => t.TxnId.Xor(transactionIndexRequest.TransactionId))));
if (block is { })
{
return new TransactionBlockIndexResponse(block.Height);
}
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new TransactionBlockIndexResponse(0);
}
/// <summary>
///
/// </summary>
/// <param name="transactionIdRequest"></param>
/// <returns></returns>
public async Task<BlockResponse> GetTransactionBlockAsync(TransactionIdRequest transactionIdRequest)
{
Guard.Argument(transactionIdRequest, nameof(transactionIdRequest)).NotNull();
try
{
var unitOfWork = _cypherSystemCore.UnitOfWork();
var block = await unitOfWork.HashChainRepository.GetAsync(x =>
new ValueTask<bool>(x.Txs.Any(t => t.TxnId.Xor(transactionIdRequest.TransactionId))));
if (block is { })
{
return new BlockResponse(block);
}
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new BlockResponse(null);
}
/// <summary>
///
/// </summary>
/// <param name="transactionRequest"></param>
/// <returns></returns>
public async Task<TransactionResponse> GetTransactionAsync(TransactionRequest transactionRequest)
{
Guard.Argument(transactionRequest, nameof(transactionRequest)).NotNull();
try
{
var unitOfWork = _cypherSystemCore.UnitOfWork();
var blocks = await unitOfWork.HashChainRepository.WhereAsync(x =>
new ValueTask<bool>(x.Txs.Any(t => t.TxnId.Xor(transactionRequest.TransactionId))));
var block = blocks.FirstOrDefault();
var transaction = block?.Txs.FirstOrDefault(x => x.TxnId.Xor(transactionRequest.TransactionId));
if (transaction is { })
{
return new TransactionResponse(transaction);
}
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new TransactionResponse(null);
}
/// <summary>
/// </summary>
/// <returns></returns>
public async Task<Block> GetPreviousBlockAsync()
{
var hashChainRepository = _cypherSystemCore.UnitOfWork().HashChainRepository;
var prevBlock =
await hashChainRepository.GetAsync(x =>
new ValueTask<bool>(x.Height == hashChainRepository.Height));
return prevBlock;
}
/// <summary>
/// </summary>
/// <param name="safeguardBlocksRequest"></param>
/// <returns></returns>
public async Task<SafeguardBlocksResponse> GetSafeguardBlocksAsync(SafeguardBlocksRequest safeguardBlocksRequest)
{
Guard.Argument(safeguardBlocksRequest, nameof(safeguardBlocksRequest)).NotNull();
try
{
var hashChainRepository = _cypherSystemCore.UnitOfWork().HashChainRepository;
var height = hashChainRepository.Height - (ulong)safeguardBlocksRequest.NumberOfBlocks;
var blocks = await hashChainRepository.OrderByRangeAsync(x => x.Height, (int)height,
safeguardBlocksRequest.NumberOfBlocks);
if (blocks.Any()) return new SafeguardBlocksResponse(blocks, string.Empty);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new SafeguardBlocksResponse(new List<Block>(Array.Empty<Block>()), "Sequence contains zero elements");
}
/// <summary>
/// </summary>
/// <param name="blockRequest"></param>
/// <returns></returns>
public async Task<BlockResponse> GetBlockAsync(BlockRequest blockRequest)
{
try
{
var block = await _cypherSystemCore.UnitOfWork().HashChainRepository.GetAsync(blockRequest.Hash);
if (block is { }) return new BlockResponse(block);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new BlockResponse(null);
}
/// <summary>
///
/// </summary>
/// <param name="blockByHeightRequest"></param>
/// <returns></returns>
public async Task<BlockResponse> GetBlockByHeightAsync(BlockByHeightRequest blockByHeightRequest)
{
try
{
var block = await _cypherSystemCore.UnitOfWork().HashChainRepository.GetAsync(x =>
new ValueTask<bool>(x.Height == blockByHeightRequest.Height));
if (block is { }) return new BlockResponse(block);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new BlockResponse(null);
}
/// <summary>
/// </summary>
/// <param name="blocksRequest"></param>
public async Task<BlocksResponse> GetBlocksAsync(BlocksRequest blocksRequest)
{
Guard.Argument(blocksRequest, nameof(blocksRequest)).NotNull();
try
{
var unitOfWork = _cypherSystemCore.UnitOfWork();
var (skip, take) = blocksRequest;
var blocks = await unitOfWork.HashChainRepository.OrderByRangeAsync(x => x.Height, skip, take);
if (blocks.Any()) return new BlocksResponse(blocks);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new BlocksResponse(null);
}
/// <summary>
/// </summary>
/// <param name="saveBlockRequest"></param>
public async Task<SaveBlockResponse> SaveBlockAsync(SaveBlockRequest saveBlockRequest)
{
Guard.Argument(saveBlockRequest, nameof(saveBlockRequest)).NotNull();
try
{
if (await _cypherSystemCore.Validator().VerifyBlockAsync(saveBlockRequest.Block) != VerifyResult.Succeed)
{
return new SaveBlockResponse(false);
}
var unitOfWork = _cypherSystemCore.UnitOfWork();
if (await unitOfWork.HashChainRepository.PutAsync(saveBlockRequest.Block.Hash, saveBlockRequest.Block))
return new SaveBlockResponse(true);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return new SaveBlockResponse(false);
}
/// <summary>
///
/// </summary>
/// <param name="blockHeightExistsRequest"></param>
/// <returns></returns>
public async Task<VerifyResult> BlockHeightExistsAsync(BlockHeightExistsRequest blockHeightExistsRequest)
{
Guard.Argument(blockHeightExistsRequest, nameof(blockHeightExistsRequest)).NotNull();
Guard.Argument(blockHeightExistsRequest.Height, nameof(blockHeightExistsRequest.Height)).NotNegative();
var unitOfWork = _cypherSystemCore.UnitOfWork();
var seen = await unitOfWork.HashChainRepository.GetAsync(x => new ValueTask<bool>(x.Height == blockHeightExistsRequest.Height));
return seen is not null ? VerifyResult.AlreadyExists : VerifyResult.Succeed;
}
/// <summary>
/// </summary>
/// <param name="blockExistsRequest"></param>
/// <returns></returns>
public async Task<VerifyResult> BlockExistsAsync(BlockExistsRequest blockExistsRequest)
{
Guard.Argument(blockExistsRequest, nameof(blockExistsRequest)).NotNull();
Guard.Argument(blockExistsRequest.Hash, nameof(blockExistsRequest.Hash)).NotEmpty().NotEmpty().MaxCount(64);
var unitOfWork = _cypherSystemCore.UnitOfWork();
var seen = await unitOfWork.HashChainRepository.GetAsync(x => new ValueTask<bool>(x.Hash.Xor(blockExistsRequest.Hash)));
return seen is not null ? VerifyResult.AlreadyExists : VerifyResult.Succeed;
}
/// <summary>
///
/// </summary>
/// <param name="hashTransactionsRequest"></param>
/// <returns></returns>
public byte[] HashTransactions(HashTransactionsRequest hashTransactionsRequest)
{
Guard.Argument(hashTransactionsRequest, nameof(hashTransactionsRequest)).NotNull();
if (hashTransactionsRequest.Transactions.Length == 0) return null;
using BufferStream ts = new();
foreach (var transaction in hashTransactionsRequest.Transactions) ts.Append(transaction.ToStream());
return Hasher.Hash(ts.ToArray()).HexToByte();
}
/// <summary>
/// </summary>
private void Init()
{
HandelSeenBlockGraphs();
}
/// <summary>
/// </summary>
/// <param name="e"></param>
private void OnRoundReady(BlockGraphEventArgs e)
{
if (e.BlockGraph.Block.Round == NextRound()) _onRoundCompletedEventHandler?.Invoke(this, e);
}
/// <summary>
/// </summary>
private void HandelSeenBlockGraphs()
{
_disposableHandelSeenBlockGraphs = Observable.Interval(TimeSpan.FromMinutes(15)).Subscribe(_ =>
{
if (_cypherSystemCore.ApplicationLifetime.ApplicationStopping.IsCancellationRequested) return;
try
{
var removeSeenBlockGraphBeforeTimestamp = Util.GetUtcNow().AddMinutes(-15).ToUnixTimestamp();
var removingBlockGraphs = AsyncHelper.RunSync(async delegate
{
return await _syncCacheSeenBlockGraph.WhereAsync(x =>
new ValueTask<bool>(x.Value.Timestamp < removeSeenBlockGraphBeforeTimestamp));
});
foreach (var (key, _) in removingBlockGraphs.OrderBy(x => x.Value.Round))
{
_syncCacheSeenBlockGraph.Remove(key);
_syncCacheBlockGraph.Remove(key);
}
}
catch (TaskCanceledException)
{
// Ignore
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
});
}
/// <summary>
/// </summary>
/// <returns></returns>
private IDisposable OnRoundListener()
{
var onRoundCompletedSubscription = _onRoundCompleted
.Where(data => data.EventArgs.BlockGraph.Block.Round == NextRound())
.Throttle(TimeSpan.FromSeconds(LedgerConstant.OnRoundThrottleFromSeconds), NewThreadScheduler.Default)
.Subscribe(_ =>
{
try
{
var blockGraphs = _syncCacheBlockGraph.GetItems().Where(x => x.Block.Round == NextRound()).ToList();
if (blockGraphs.Count < 2) return;
var nodeCount = blockGraphs.Select(n => n.Block.Node).Distinct().Count();
var f = (nodeCount - 1) / 3;
var quorum2F1 = 2 * f + 1;
if (nodeCount < quorum2F1) return;
var lastInterpreted = GetRound();
var config = new Config(lastInterpreted, Array.Empty<ulong>(),
_cypherSystemCore.KeyPair.PublicKey.ToHashIdentifier(), (ulong)nodeCount);
var blockmania = new Blockmania(config, _logger) { NodeCount = nodeCount };
blockmania.TrackingDelivered.Subscribe(x =>
{
OnDeliveredReadyAsync(x.EventArgs.Interpreted).SafeFireAndForget();
});
foreach (var next in blockGraphs)
{
AsyncHelper.RunSync(async () =>
{
await blockmania.AddAsync(next,
_cypherSystemCore.ApplicationLifetime.ApplicationStopping);
});
}
}
catch (Exception ex)
{
_logger.Here().Error(ex, "Process add blockmania error");
}
}, exception => { _logger.Here().Error(exception, "Subscribe try add blockmania listener error"); });
return onRoundCompletedSubscription;
}
/// <summary>
/// </summary>
/// <param name="blockGraph"></param>
/// <returns></returns>
private bool Save(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
try
{
if (_cypherSystemCore.Validator().VerifyBlockGraphSignatureNodeRound(blockGraph).Result != VerifyResult.Succeed)
{
_logger.Error("Unable to verify block for {@Node} and round {@Round}", blockGraph.Block.Node,
blockGraph.Block.Round);
_syncCacheBlockGraph.Remove(blockGraph.ToIdentifier());
return false;
}
_syncCacheBlockGraph.Add(blockGraph.ToIdentifier(), blockGraph);
}
catch (Exception)
{
_logger.Here().Error("Unable to save block for {@Node} and round {@Round}", blockGraph.Block.Node,
blockGraph.Block.Round);
return false;
}
return true;
}
/// <summary>
/// </summary>
/// <param name="blockGraph"></param>
/// <returns></returns>
private async Task<BlockGraph> SignAsync(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
try
{
var (signature, publicKey) = await _cypherSystemCore.Crypto()
.SignAsync(_cypherSystemCore.Node.Network.SigningKeyRingName, blockGraph.ToHash());
blockGraph.PublicKey = publicKey;
blockGraph.Signature = signature;
return blockGraph;
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return null;
}
/// <summary>
/// </summary>
/// <param name="blockGraph"></param>
/// <returns></returns>
private BlockGraph Copy(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
try
{
var localNodeId = _cypherSystemCore.KeyPair.PublicKey.ToHashIdentifier();
var copy = new BlockGraph
{
Block = new Consensus.Models.Block
{
BlockHash = blockGraph.Block.BlockHash,
Data = blockGraph.Block.Data,
DataHash = blockGraph.Block.DataHash,
Hash = blockGraph.Block.Hash,
Node = localNodeId,
Round = blockGraph.Block.Round
},
Prev = new Consensus.Models.Block
{
BlockHash = blockGraph.Prev.BlockHash,
Data = blockGraph.Prev.Data,
DataHash = blockGraph.Prev.DataHash,
Hash = blockGraph.Prev.Hash,
Node = localNodeId,
Round = blockGraph.Prev.Round
}
};
return copy;
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
return null;
}
/// <summary>
/// </summary>
/// <returns></returns>
private async Task FinalizeAsync(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
try
{
var copy = blockGraph.Block.Node != _cypherSystemCore.KeyPair.PublicKey.ToHashIdentifier();
if (copy)
{
_logger.Information("BlockGraph Copy: [{@Node}] Round: [{@Round}]", blockGraph.Block.Node,
blockGraph.Block.Round);
if (!Save(blockGraph)) return;
var copyBlockGraph = Copy(blockGraph);
if (copyBlockGraph is null) return;
var signBlockGraph = await SignAsync(copyBlockGraph);
if (signBlockGraph is null) return;
if (!Save(signBlockGraph)) return;
await BroadcastAsync(signBlockGraph);
OnRoundReady(new BlockGraphEventArgs(blockGraph));
}
else
{
_logger.Information("BlockGraph Self: [{@Node}] Round: [{@Round}]", blockGraph.Block.Node,
blockGraph.Block.Round);
var signBlockGraph = await SignAsync(blockGraph);
if (signBlockGraph is null) return;
if (!Save(signBlockGraph)) return;
await BroadcastAsync(signBlockGraph);
}
}
catch (Exception)
{
_logger.Here().Error("Unable to add block for {@Node} and round {@Round}", blockGraph.Block.Node,
blockGraph.Block.Round);
}
}
/// <summary>
/// </summary>
/// <param name="deliver"></param>
/// <returns></returns>
private async Task OnDeliveredReadyAsync(Interpreted deliver)
{
Guard.Argument(deliver, nameof(deliver)).NotNull();
_logger.Information("Delivered: {@Count} Consumed: {@Consumed} Round: {@Round}", deliver.Blocks.Count,
deliver.Consumed, deliver.Round);
var blocks = deliver.Blocks.Where(x => x.Data is { });
foreach (var deliveredBlock in blocks)
try
{
if (deliveredBlock.Round != NextRound()) continue;
await using var stream = Util.Manager.GetStream(deliveredBlock.Data.AsSpan()) as RecyclableMemoryStream;
var block = await MessagePackSerializer.DeserializeAsync<Block>(stream);
_syncCacheDelivered.AddOrUpdate(block.Hash, block);
}
catch (Exception ex)
{
_logger.Here().Error("{@Message}", ex.Message);
}
await DecideWinnerAsync();
}
/// <summary>
/// </summary>
private async Task DecideWinnerAsync()
{
await _slimDecideWinner.WaitAsync();
Block[] deliveredBlocks = null;
try
{
deliveredBlocks = _syncCacheDelivered.Where(x => x.Value.Height == NextRound()).Select(n => n.Value)
.ToArray();
if (deliveredBlocks.Any() != true) return;
_logger.Information("DecideWinnerAsync");
var winners = deliveredBlocks.Where(x =>
x.BlockPos.Solution == deliveredBlocks.Select(n => n.BlockPos.Solution).Min()).ToArray();
_logger.Information("Potential winners");
foreach (var winner in winners)
_logger.Here().Information("Hash {@Hash} Solution {@Sol} Node {@Node}", winner.Hash.ByteToHex(),
winner.BlockPos.Solution, winner.BlockPos.PublicKey.ToHashIdentifier());
var block = winners.Length switch
{
> 2 => winners.FirstOrDefault(winner =>
winner.BlockPos.Solution >= deliveredBlocks.Select(x => x.BlockPos.Solution).Max()),
_ => winners[0]
};
if (block is { })
{
if (block.Height != NextRound()) return;
if (await BlockHeightExistsAsync(new BlockHeightExistsRequest(block.Height)) == VerifyResult.AlreadyExists)
{
_logger.Error("Block winner already exists");
return;
}
var saveBlockResponse = await SaveBlockAsync(new SaveBlockRequest(block));
if (saveBlockResponse.Ok)
{
if (block.BlockPos.PublicKey.ToHashIdentifier() ==
_cypherSystemCore.PeerDiscovery().GetLocalNode().Identifier)
{
AnsiConsole.Write(
new FigletText("# Block Winner #")
.Centered()
.Color(Color.Magenta1));
}
else
{
_logger.Information("We have a winner {@Hash}", block.Hash.ByteToHex());
}
}
else
{
var seenBlockGraph =
_syncCacheSeenBlockGraph.GetItems().FirstOrDefault(x => x.Hash.Xor(block.Hash));
if (seenBlockGraph != null) _syncCacheBlockGraph.Remove(seenBlockGraph.Key);
_logger.Error("Unable to save the block winner");
}
_cypherSystemCore.WalletSession().Notify(block.Txs.ToArray());
}
}
catch (Exception ex)
{
_logger.Here().Error(ex, "Decide winner failed");
}
finally
{
if (deliveredBlocks is { })
foreach (var block in deliveredBlocks)
_syncCacheDelivered.Remove(block.Hash);
_slimDecideWinner.Release();
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private ulong GetRound()
{
return _cypherSystemCore.UnitOfWork().HashChainRepository.Height;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private ulong NextRound()
{
return _cypherSystemCore.UnitOfWork().HashChainRepository.Count;
}
/// <summary>
/// </summary>
/// <param name="blockGraph"></param>
/// <returns></returns>
private async Task BroadcastAsync(BlockGraph blockGraph)
{
Guard.Argument(blockGraph, nameof(blockGraph)).NotNull();
try
{
if (blockGraph.Block.Round == NextRound())
await _cypherSystemCore.Broadcast().PostAsync((TopicType.AddBlockGraph,
MessagePackSerializer.Serialize(blockGraph)));
}
catch (Exception ex)
{
_logger.Here().Error(ex, "Broadcast error");
}
}
/// <summary>
///
/// </summary>
/// <param name="disposing"></param>
private void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
_onRoundListener?.Dispose();
_disposableHandelSeenBlockGraphs?.Dispose();
}
_disposed = true;
}
/// <summary>
///
/// </summary>
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}