private Task StartSync()
{
if (!_initConfig.SynchronizationEnabled)
{
if (_logger.IsWarn) _logger.Warn($"Skipping blockchain synchronization init due to ({nameof(IInitConfig.SynchronizationEnabled)} set to false)");
return Task.CompletedTask;
}
if (_logger.IsDebug) _logger.Debug($"Starting synchronization from block {_blockTree.Head.ToString(BlockHeader.Format.Short)}.");
_syncManager.Start();
return Task.CompletedTask;
}
public void Retrieves_missing_blocks_in_batches()
{
_remoteBlockTree = Build.A.BlockTree(_genesisBlock).OfChainLength(QueueBasedSyncManager.MaxBatchSize * 2).TestObject;
ISynchronizationPeer peer = new SynchronizationPeerMock(_remoteBlockTree);
ManualResetEvent resetEvent = new ManualResetEvent(false);
_manager.SyncEvent += (sender, args) =>
{
if (args.SyncStatus == SyncStatus.Completed || args.SyncStatus == SyncStatus.Failed)
{
resetEvent.Set();
}
};
_manager.Start();
_manager.AddPeer(peer);
resetEvent.WaitOne(_standardTimeoutUnit);
Assert.AreEqual(QueueBasedSyncManager.MaxBatchSize * 2 - 1, (int)_blockTree.BestSuggested.Number);
}
private Task StartSync()
{
if (!_initConfig.SynchronizationEnabled)
{
if (_logger.IsInfo)
{
_logger.Info($"Skipping blockchain synchronization init ({nameof(IInitConfig.SynchronizationEnabled)} = false)");
}
return(Task.CompletedTask);
}
if (_logger.IsDebug)
{
_logger.Debug($"Starting synchronization from block {_blockTree.Head.ToString(BlockHeader.Format.Short)}.");
}
_syncManager.Start();
return(Task.CompletedTask);
}
public SyncingContext()
{
MemDb stateDb = new MemDb();
BlockTree = new BlockTree(new MemDb(), new MemDb(), new SingleReleaseSpecProvider(Constantinople.Instance, 1), NullTransactionPool.Instance, LimboLogs.Instance);
SyncManager = new QueueBasedSyncManager(
stateDb,
BlockTree,
TestBlockValidator.AlwaysValid,
TestHeaderValidator.AlwaysValid,
TestTransactionValidator.AlwaysValid,
LimboLogs.Instance,
new BlockchainConfig(),
new PerfService(LimboLogs.Instance),
NullReceiptStorage.Instance);
SyncManager.Start();
SyncManager.SyncEvent += (sender, args) => TestContext.WriteLine(args.SyncStatus);
}
private async Task StartProcessing(BlockTree blockTree, TransactionStore transactionStore, BlockValidator blockValidator, HeaderValidator headerValidator, TransactionValidator txValidator, InitParams initParams)
{
await blockTree.LoadBlocksFromDb(_runnerCancellation.Token).ContinueWith(async t =>
{
if (t.IsFaulted)
{
if (_logger.IsErrorEnabled)
{
_logger.Error("Loading blocks from DB failed.", t.Exception);
}
}
else if (t.IsCanceled)
{
if (_logger.IsWarnEnabled)
{
_logger.Warn("Loading blocks from DB cancelled.");
}
}
else
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Loaded all blocks from DB");
}
if (!initParams.SynchronizationEnabled)
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Synchronization disabled.");
}
}
else
{
if (_logger.IsInfoEnabled)
{
_logger.Info($"Starting synchronization from block {blockTree.Head.ToString(BlockHeader.Format.Short)}.");
}
// TODO: only start sync manager after queued blocks are processed
_syncManager = new SynchronizationManager(
blockTree,
blockValidator,
headerValidator,
transactionStore,
txValidator,
_logger, new BlockchainConfig());
_syncManager.Start();
await InitNet(initParams.P2PPort ?? 30303).ContinueWith(initNetTask =>
{
if (initNetTask.IsFaulted)
{
_logger.Error("Unable to initialize network layer.", initNetTask.Exception);
}
});
if (initParams.DiscoveryEnabled)
{
await InitDiscovery(initParams).ContinueWith(initDiscoveryTask =>
{
if (initDiscoveryTask.IsFaulted)
{
_logger.Error("Unable to initialize discovery protocol.", initDiscoveryTask.Exception);
}
});
}
else if (_logger.IsInfoEnabled)
{
_logger.Info("Discovery protocol disabled");
}
await InitPeerManager().ContinueWith(initPeerManagerTask =>
{
if (initPeerManagerTask.IsFaulted)
{
_logger.Error("Unable to initialize peer manager.", initPeerManagerTask.Exception);
}
});
}
}
});
}
private static void InitBlockchain(ChainSpec chainSpec, bool isMining, int miningDelay)
{
/* spec */
var blockMiningTime = TimeSpan.FromMilliseconds(miningDelay);
var transactionDelay = TimeSpan.FromMilliseconds(miningDelay / 4);
var specProvider = RopstenSpecProvider.Instance;
var difficultyCalculator = new DifficultyCalculator(specProvider);
// var sealEngine = new EthashSealEngine(new Ethash());
var sealEngine = new FakeSealEngine(blockMiningTime, false);
/* sync */
var transactionStore = new TransactionStore();
var blockTree = new BlockTree(RopstenSpecProvider.Instance, ChainLogger);
/* validation */
var headerValidator = new HeaderValidator(difficultyCalculator, blockTree, sealEngine, specProvider, ChainLogger);
var ommersValidator = new OmmersValidator(blockTree, headerValidator, ChainLogger);
var txValidator = new TransactionValidator(new SignatureValidator(ChainId.Ropsten));
var blockValidator = new BlockValidator(txValidator, headerValidator, ommersValidator, specProvider, ChainLogger);
/* state */
var dbProvider = new DbProvider(StateLogger);
var codeDb = new InMemoryDb();
var stateDb = new InMemoryDb();
var stateTree = new StateTree(stateDb);
var stateProvider = new StateProvider(stateTree, StateLogger, codeDb);
var storageProvider = new StorageProvider(dbProvider, stateProvider, StateLogger);
var storageDbProvider = new DbProvider(StateLogger);
/* blockchain */
var ethereumSigner = new EthereumSigner(specProvider, ChainLogger);
/* blockchain processing */
var blockhashProvider = new BlockhashProvider(blockTree);
var virtualMachine = new VirtualMachine(specProvider, stateProvider, storageProvider, blockhashProvider, EvmLogger);
var transactionProcessor = new TransactionProcessor(specProvider, stateProvider, storageProvider, virtualMachine, ethereumSigner, ChainLogger);
var rewardCalculator = new RewardCalculator(specProvider);
var blockProcessor = new BlockProcessor(specProvider, blockValidator, rewardCalculator, transactionProcessor, storageDbProvider, stateProvider, storageProvider, transactionStore, ChainLogger);
_blockchainProcessor = new BlockchainProcessor(blockTree, sealEngine, transactionStore, difficultyCalculator, blockProcessor, ChainLogger);
/* genesis */
foreach (KeyValuePair <Address, BigInteger> allocation in chainSpec.Allocations)
{
stateProvider.CreateAccount(allocation.Key, allocation.Value);
}
stateProvider.Commit(specProvider.GenesisSpec);
var testTransactionsGenerator = new TestTransactionsGenerator(transactionStore, ethereumSigner, transactionDelay, ChainLogger);
stateProvider.CreateAccount(testTransactionsGenerator.SenderAddress, 1000.Ether());
stateProvider.Commit(specProvider.GenesisSpec);
if (isMining)
{
testTransactionsGenerator.Start();
}
Block genesis = chainSpec.Genesis;
genesis.Header.StateRoot = stateProvider.StateRoot;
genesis.Header.RecomputeHash();
// we are adding test transactions account so the state root will change (not an actual ropsten at the moment)
// var expectedGenesisHash = "0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d";
// if (chainSpec.Genesis.Hash != new Keccak(expectedGenesisHash))
// {
// throw new Exception($"Unexpected genesis hash for Ropsten, expected {expectedGenesisHash}, but was {chainSpec.Genesis.Hash}");
// }
/* start test processing */
sealEngine.IsMining = isMining;
_blockchainProcessor.Start();
blockTree.AddBlock(genesis);
_syncManager = new SynchronizationManager(
blockTree,
blockValidator,
headerValidator,
transactionStore,
txValidator,
NetworkLogger);
_syncManager.Start();
}