public async Task Does_not_do_full_sync_when_not_needed_with_split()
{
BlockTree minerTree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISynchronizationPeer miner1 = new SynchronizationPeerMock(minerTree);
AutoResetEvent resetEvent = new AutoResetEvent(false);
_manager.SyncEvent += (sender, args) =>
{
if (args.SyncStatus == SyncStatus.Completed || args.SyncStatus == SyncStatus.Failed)
{
resetEvent.Set();
}
};
_manager.Start();
Task addMiner1Task = _manager.AddPeer(miner1);
await Task.WhenAll(addMiner1Task);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(minerTree.BestSuggested.Hash, _blockTree.BestSuggested.Hash, "client agrees with miner before split");
Block newBlock = Build.A.Block.WithParent(minerTree.Head).TestObject;
minerTree.SuggestBlock(newBlock);
minerTree.UpdateMainChain(newBlock);
ISynchronizationPeer miner2 = Substitute.For <ISynchronizationPeer>();
miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockNumber(CancellationToken.None));
miner2.GetHeadBlockHash(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockHash(CancellationToken.None));
miner2.NodeId.Returns(new NodeId(TestObject.PublicKeyB));
Assert.AreEqual(newBlock.Number, await miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()), "number as expected");
Assert.AreEqual(newBlock.Hash, await miner2.GetHeadBlockHash(default(CancellationToken)), "hash as expected");
await _manager.AddPeer(miner2);
resetEvent.WaitOne(_standardTimeoutUnit);
await miner2.Received().GetBlockHeaders(6, 1, 0, default(CancellationToken));
}
private async Task InitPeerInfo(ISynchronizationPeer peer, CancellationToken token)
{
if (_logger.IsTrace)
{
_logger.Trace($"Requesting head block info from {peer.NodeId}");
}
Task <Keccak> getHashTask = peer.GetHeadBlockHash(token);
Task <UInt256> getNumberTask = peer.GetHeadBlockNumber(token);
// Task<UInt256> getDifficultyTask = peer.GetHeadDifficulty(token);
await Task.WhenAny(Task.WhenAll(getHashTask, getNumberTask), Task.Delay(10000, token)).ContinueWith(
t =>
{
if (t.IsFaulted)
{
if (_logger.IsTrace)
{
_logger.Trace($"InitPeerInfo failed for node: {peer.NodeId}{Environment.NewLine}{t.Exception}");
}
RemovePeer(peer);
SyncEvent?.Invoke(this, new SyncEventArgs(peer, SyncStatus.InitFailed));
}
else if (t.IsCanceled)
{
RemovePeer(peer);
SyncEvent?.Invoke(this, new SyncEventArgs(peer, SyncStatus.InitCancelled));
token.ThrowIfCancellationRequested();
}
else
{
if (_logger.IsTrace)
{
_logger.Trace($"Received head block info from {peer.NodeId} with head block numer {getNumberTask.Result}");
}
SyncEvent?.Invoke(
this,
new SyncEventArgs(peer, SyncStatus.InitCompleted)
{
NodeBestBlockNumber = getNumberTask.Result,
OurBestBlockNumber = _blockTree.BestSuggested.Number
});
bool result = _peers.TryGetValue(peer.NodeId, out PeerInfo peerInfo);
if (!result)
{
_logger.Error($"Initializing PeerInfo failed for {peer.NodeId}");
throw new EthSynchronizationException($"Initializing peer info failed for {peer.NodeId.ToString()}");
}
peerInfo.NumberAvailable = getNumberTask.Result;
// peerInfo.Difficulty = getDifficultyTask.Result;
peerInfo.NumberReceived = _blockTree.BestSuggested.Number;
peerInfo.IsInitialized = true;
}
}, token);
}
private async Task InitPeerInfo(ISynchronizationPeer peer, CancellationToken token)
{
Task <Keccak> getHashTask = peer.GetHeadBlockHash();
if (_logger.IsDebugEnabled)
{
_logger.Debug($"Requesting head block info from {peer.NodeId}");
}
Task <BigInteger> getNumberTask = peer.GetHeadBlockNumber(token);
await Task.WhenAll(getHashTask, getNumberTask).ContinueWith(
t =>
{
if (t.IsFaulted)
{
if (_logger.IsErrorEnabled)
{
if (t.Exception != null && t.Exception.InnerExceptions.Any(x => x is TimeoutException))
{
_logger.Warn($"InitPeerInfo failed for node: {peer.NodeId}. {t.Exception?.Message}");
}
else
{
_logger.Error($"InitPeerInfo failedf or node: {peer.NodeId}.", t.Exception);
}
}
SyncFailed?.Invoke(this, new SyncEventArgs(peer));
}
else if (t.IsCanceled)
{
token.ThrowIfCancellationRequested();
}
}, token);
if (_logger.IsDebugEnabled)
{
_logger.Info($"Received head block info from {peer.NodeId} with head block numer {getNumberTask.Result}");
}
bool addResult = _peers.TryAdd(peer.NodeId, new PeerInfo(peer, getNumberTask.Result)
{
NumberReceived = BlockTree.BestSuggested.Number
}); // TODO: cheating now with assumign the consistency of the chains
if (!addResult)
{
_logger.Error($"Adding {nameof(PeerInfo)} failed for {peer.NodeId}");
}
}
public async Task Does_not_do_full_sync_when_not_needed_with_split()
{
BlockTree minerTree = Build.A.BlockTree(_genesisBlock).OfChainLength(6).TestObject;
ISynchronizationPeer miner1 = new SynchronizationPeerMock(minerTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_manager.SyncEvent += (sender, args) => { resetEvent.Set(); };
Task addMiner1Task = _manager.AddPeer(miner1);
await Task.WhenAll(addMiner1Task);
resetEvent.WaitOne(TimeSpan.FromSeconds(1));
Assert.AreEqual(minerTree.BestSuggested.Hash, _blockTree.BestSuggested.Hash, "client agrees with miner before split");
Block newBlock = Build.A.Block.WithParent(minerTree.Head).TestObject;
minerTree.SuggestBlock(newBlock);
minerTree.MarkAsProcessed(newBlock.Hash);
minerTree.MoveToMain(newBlock.Hash);
ISynchronizationPeer miner2 = Substitute.For <ISynchronizationPeer>();
miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockNumber(Arg.Any <CancellationToken>()));
miner2.GetHeadBlockHash(Arg.Any <CancellationToken>()).Returns(miner1.GetHeadBlockHash(default(CancellationToken)));
miner2.NodeId.Returns(new NodeId(TestObject.PublicKeyB));
Assert.AreEqual(newBlock.Number, await miner2.GetHeadBlockNumber(Arg.Any <CancellationToken>()), "number as expected");
Assert.AreEqual(newBlock.Hash, await miner2.GetHeadBlockHash(default(CancellationToken)), "hash as expected");
await _manager.AddPeer(miner2);
await miner2.Received().GetBlockHeaders(6, 1, 0, default(CancellationToken));
}