public async Task ProcessBlockExecutionResultAsync(Chain chain, BlockExecutionResult blockExecutionResult)
{
if (blockExecutionResult.ExecutedFailedBlocks.Any() ||
blockExecutionResult.SuccessBlockExecutedSets.Count == 0 ||
blockExecutionResult.SuccessBlockExecutedSets.Last().Height < chain.BestChainHeight)
{
await SetBlockExecutionStatusAsync(blockExecutionResult.ExecutedFailedBlocks.Select(b => b.GetHash()),
ChainBlockLinkExecutionStatus.ExecutionFailed);
await _blockchainService.RemoveLongestBranchAsync(chain);
Logger.LogDebug("No block executed successfully or no block is higher than best chain.");
return;
}
var lastExecutedSuccessBlock = blockExecutionResult.SuccessBlockExecutedSets.Last();
await _blockchainService.SetBestChainAsync(chain, lastExecutedSuccessBlock.Height,
lastExecutedSuccessBlock.GetHash());
await SetBlockExecutionStatusAsync(blockExecutionResult.SuccessBlockExecutedSets.Select(b => b.GetHash()),
ChainBlockLinkExecutionStatus.ExecutionSuccess);
await LocalEventBus.PublishAsync(new BlocksExecutionSucceededEvent
{
BlockExecutedSets = blockExecutionResult.SuccessBlockExecutedSets
});
Logger.LogInformation(
$"Attach blocks to best chain, best chain hash: {chain.BestChainHash}, height: {chain.BestChainHeight}");
}
public async Task AttachBlockAsync(Block block)
{
var chain = await _blockchainService.GetChainAsync();
var status = await _blockchainService.AttachBlockToChainAsync(chain, block);
if (!status.HasFlag(BlockAttachOperationStatus.LongestChainFound))
{
Logger.LogDebug($"Try to attach to chain but the status is {status}.");
return;
}
var notExecutedChainBlockLinks =
await _chainBlockLinkService.GetNotExecutedChainBlockLinksAsync(chain.LongestChainHash);
var notExecutedBlocks =
await _blockchainService.GetBlocksAsync(notExecutedChainBlockLinks.Select(l => l.BlockHash));
var executionResult = new BlockExecutionResult();
try
{
executionResult = await _blockchainExecutingService.ExecuteBlocksAsync(notExecutedBlocks);
}
catch (Exception e)
{
Logger.LogError(e, "Block execute fails.");
throw;
}
finally
{
await _blockExecutionResultProcessingService.ProcessBlockExecutionResultAsync(chain, executionResult);
}
}
public async Task Process_LessThanBestChainHeight_BlockExecutionResult()
{
var chain = await _blockchainService.GetChainAsync();
await _blockchainService.RemoveLongestBranchAsync(chain);
var block = _kernelTestHelper.GenerateBlock(1, Hash.Empty);
await _blockchainService.AttachBlockToChainAsync(chain, block);
var executionResult = new BlockExecutionResult
{
SuccessBlockExecutedSets = { new BlockExecutedSet {
Block = block
} }
};
await _blockExecutionResultProcessingService.ProcessBlockExecutionResultAsync(chain, executionResult);
chain = await _blockchainService.GetChainAsync();
chain.LongestChainHash.ShouldBe(chain.BestChainHash);
chain.LongestChainHeight.ShouldBe(chain.BestChainHeight);
}
public async Task Process_Failed_BlockExecutionResult()
{
var chain = await _blockchainService.GetChainAsync();
await _blockchainService.AttachBlockToChainAsync(chain, _kernelTestHelper.LongestBranchBlockList.Last());
var executionResult = new BlockExecutionResult();
executionResult.ExecutedFailedBlocks.Add(_kernelTestHelper.LongestBranchBlockList.Last());
await _blockExecutionResultProcessingService.ProcessBlockExecutionResultAsync(chain, executionResult);
chain = await _blockchainService.GetChainAsync();
chain.LongestChainHash.ShouldBe(chain.BestChainHash);
chain.LongestChainHeight.ShouldBe(chain.BestChainHeight);
var chainBlockLink =
await _chainManager.GetChainBlockLinkAsync(_kernelTestHelper.LongestBranchBlockList.Last().GetHash());
chainBlockLink.ExecutionStatus.ShouldBe(ChainBlockLinkExecutionStatus.ExecutionFailed);
}
public async Task Process_Success_BlockExecutionResult()
{
var chain = await _blockchainService.GetChainAsync();
await _blockchainService.RemoveLongestBranchAsync(chain);
var block = _kernelTestHelper.GenerateBlock(chain.BestChainHeight, chain.BestChainHash);
await _blockchainService.AttachBlockToChainAsync(chain, block);
chain = await _blockchainService.GetChainAsync();
var block2 = _kernelTestHelper.GenerateBlock(block.Height, block.GetHash());
await _blockchainService.AttachBlockToChainAsync(chain, block2);
var executionResult = new BlockExecutionResult
{
SuccessBlockExecutedSets = { new BlockExecutedSet {
Block = block
}, new BlockExecutedSet{
Block = block2
} }
};
await _blockExecutionResultProcessingService.ProcessBlockExecutionResultAsync(chain, executionResult);
chain = await _blockchainService.GetChainAsync();
chain.BestChainHeight.ShouldBe(block2.Height);
chain.BestChainHash.ShouldBe(block2.GetHash());
var chainBlockLink = await _chainManager.GetChainBlockLinkAsync(block.GetHash());
chainBlockLink.ExecutionStatus.ShouldBe(ChainBlockLinkExecutionStatus.ExecutionSuccess);
var chainBlockLink2 = await _chainManager.GetChainBlockLinkAsync(block2.GetHash());
chainBlockLink2.ExecutionStatus.ShouldBe(ChainBlockLinkExecutionStatus.ExecutionSuccess);
}
public async Task <BlockExecutionResult> ExecuteBlocksAsync(IEnumerable <Block> blocks)
{
var executionResult = new BlockExecutionResult();
try
{
foreach (var block in blocks)
{
var blockExecutedSet = await ProcessBlockAsync(block);
if (blockExecutedSet == null)
{
executionResult.ExecutedFailedBlocks.Add(block);
return(executionResult);
}
executionResult.SuccessBlockExecutedSets.Add(blockExecutedSet);
Logger.LogInformation(
$"Executed block {block.GetHash()} at height {block.Height}, with {block.Body.TransactionsCount} txns.");
await LocalEventBus.PublishAsync(new BlockAcceptedEvent { BlockExecutedSet = blockExecutedSet });
}
}
catch (BlockValidationException ex)
{
if (!(ex.InnerException is ValidateNextTimeBlockValidationException))
{
throw;
}
Logger.LogDebug(
$"Block validation failed: {ex.Message}. Inner exception {ex.InnerException.Message}");
}
return(executionResult);
}