public async Task ValidateBlockBeforeAttachAsync_Test()
{
var block = _kernelTestHelper.GenerateBlock(9, HashHelper.ComputeFrom("PreviousBlockHash"));
var validateResult = await _blockValidationService.ValidateBlockBeforeAttachAsync(block);
validateResult.ShouldBeFalse();
block.Body.TransactionIds.Add(Hash.Empty);
block.Header.MerkleTreeRootOfTransactions = block.Body.CalculateMerkleTreeRoot();
block.Header.ChainId = 0;
block.Header.Signature =
ByteString.CopyFrom(CryptoHelper.SignWithPrivateKey(_kernelTestHelper.KeyPair.PrivateKey,
block.GetHash().ToByteArray()));
validateResult = await _blockValidationService.ValidateBlockBeforeAttachAsync(block);
validateResult.ShouldBeFalse();
_systemTransactionExtraDataProvider.SetSystemTransactionCount(1, block.Header);
block.Header.Signature =
ByteString.CopyFrom(CryptoHelper.SignWithPrivateKey(_kernelTestHelper.KeyPair.PrivateKey,
block.GetHash().ToByteArray()));
validateResult = await _blockValidationService.ValidateBlockBeforeAttachAsync(block);
validateResult.ShouldBeTrue();
}
public async Task AttachBlockWithTransactionsAsync(BlockWithTransactions blockWithTransactions,
Func <Task> attachFinishedCallback = null)
{
var valid = await _validationService.ValidateBlockBeforeAttachAsync(blockWithTransactions);
if (!valid)
{
throw new InvalidOperationException(
$"The block was invalid, block hash: {blockWithTransactions}.");
}
await _blockchainService.AddTransactionsAsync(blockWithTransactions.Transactions);
var block = blockWithTransactions.ToBlock();
await _blockchainService.AddBlockAsync(block);
_blockSyncQueueService.Enqueue(async() =>
{
try
{
await _blockAttachService.AttachBlockAsync(block);
}
finally
{
if (attachFinishedCallback != null)
{
await attachFinishedCallback();
}
}
},
KernelConstants.UpdateChainQueueName);
}
public async Task <bool> ValidateBlockBeforeAttachAsync(BlockWithTransactions blockWithTransactions)
{
if (!await _blockValidationService.ValidateBlockBeforeAttachAsync(blockWithTransactions))
{
return(false);
}
if (!await ValidateTransactionAsync(blockWithTransactions))
{
return(false);
}
return(true);
}
public async Task AttachBlockAsync(Block block)
{
var existBlock = await _blockchainService.GetBlockHeaderByHashAsync(block.GetHash());
if (existBlock != null)
{
Logger.LogDebug($"Try attaching block but already exist, {block}");
return;
}
if (!await _blockValidationService.ValidateBlockBeforeAttachAsync(block))
{
Logger.LogWarning($"Validate block failed (before attach to chain), {block}");
return;
}
await _blockchainService.AddBlockAsync(block);
var chain = await _blockchainService.GetChainAsync();
var status = await _blockchainService.AttachBlockToChainAsync(chain, block);
await _blockchainExecutingService.ExecuteBlocksAttachedToLongestChain(chain, status);
}