public void GetNotExecutedBlocksTest()
{
AsyncHelper.RunSync(async() =>
{
var chain = await _blockchainService.GetChainAsync();
await _chainManager.GetNotExecutedBlocks(chain.LongestChainHash);
});
_counter.Increment();
}
public async Task <List <ChainBlockLink> > ExecuteBlocksAttachedToLongestChain(Chain chain, BlockAttachOperationStatus status)
{
if (!status.HasFlag(BlockAttachOperationStatus.LongestChainFound))
{
Logger.LogTrace($"Try to attach to chain but the status is {status}.");
return(null);
}
var successLinks = new List <ChainBlockLink>();
var blockLinks = await _chainManager.GetNotExecutedBlocks(chain.LongestChainHash);
try
{
foreach (var blockLink in blockLinks)
{
var linkedBlock = await _blockchainService.GetBlockByHashAsync(blockLink.BlockHash);
// Set the other blocks as bad block if found the first bad block
if (!await _blockValidationService.ValidateBlockBeforeExecuteAsync(linkedBlock))
{
await _chainManager.SetChainBlockLinkExecutionStatus(blockLink, ChainBlockLinkExecutionStatus.ExecutionFailed);
Logger.LogWarning($"Block validate fails before execution. block hash : {blockLink.BlockHash}");
break;
}
if (!await ExecuteBlock(blockLink, linkedBlock))
{
await _chainManager.SetChainBlockLinkExecutionStatus(blockLink, ChainBlockLinkExecutionStatus.ExecutionFailed);
Logger.LogWarning($"Block execution failed. block hash : {blockLink.BlockHash}");
break;
}
if (!await _blockValidationService.ValidateBlockAfterExecuteAsync(linkedBlock))
{
await _chainManager.SetChainBlockLinkExecutionStatus(blockLink, ChainBlockLinkExecutionStatus.ExecutionFailed);
Logger.LogWarning($"Block validate fails after execution. block hash : {blockLink.BlockHash}");
break;
}
await _chainManager.SetChainBlockLinkExecutionStatus(blockLink, ChainBlockLinkExecutionStatus.ExecutionSuccess);
successLinks.Add(blockLink);
Logger.LogInformation($"Executed block {blockLink.BlockHash} at height {blockLink.Height}.");
await LocalEventBus.PublishAsync(new BlockAcceptedEvent()
{
BlockHeader = linkedBlock.Header
});
}
}
catch (ValidateNextTimeBlockValidationException ex)
{
Logger.LogWarning($"Block validate fails after execution. Exception message {ex.Message}");
}
if (successLinks.Count > 0)
{
var blockLink = successLinks.Last();
await _blockchainService.SetBestChainAsync(chain, blockLink.Height, blockLink.BlockHash);
await LocalEventBus.PublishAsync(new BestChainFoundEventData
{
BlockHash = chain.BestChainHash,
BlockHeight = chain.BestChainHeight,
ExecutedBlocks = successLinks.Select(p => p.BlockHash).ToList()
});
}
Logger.LogInformation($"Attach blocks to best chain, status: {status}, best chain hash: {chain.BestChainHash}, height: {chain.BestChainHeight}");
return(blockLinks);
}
public async Task <List <ChainBlockLink> > ExecuteBlocksAttachedToLongestChain(Chain chain,
BlockAttachOperationStatus status)
{
if (!status.HasFlag(BlockAttachOperationStatus.LongestChainFound))
{
Logger.LogTrace($"Try to attach to chain but the status is {status}.");
return(null);
}
var successLinks = new List <ChainBlockLink>();
var successBlocks = new List <Block>();
var blockLinks = await _chainManager.GetNotExecutedBlocks(chain.LongestChainHash);
try
{
foreach (var blockLink in blockLinks)
{
var linkedBlock = await _blockchainService.GetBlockByHashAsync(blockLink.BlockHash);
var processResult = await TryProcessBlockAsync(linkedBlock);
if (!processResult)
{
await _chainManager.SetChainBlockLinkExecutionStatusAsync(blockLink,
ChainBlockLinkExecutionStatus.ExecutionFailed);
await _chainManager.RemoveLongestBranchAsync(chain);
return(null);
}
successLinks.Add(blockLink);
successBlocks.Add(linkedBlock);
Logger.LogInformation(
$"Executed block {blockLink.BlockHash} at height {blockLink.Height}, with {linkedBlock.Body.TransactionsCount} txns.");
await LocalEventBus.PublishAsync(new BlockAcceptedEvent { Block = linkedBlock });
}
}
catch (BlockValidationException ex)
{
if (!(ex.InnerException is ValidateNextTimeBlockValidationException))
{
await _chainManager.RemoveLongestBranchAsync(chain);
throw;
}
Logger.LogWarning(
$"Block validation failed: {ex.Message}. Inner exception {ex.InnerException.Message}");
}
catch (Exception ex)
{
await _chainManager.RemoveLongestBranchAsync(chain);
Logger.LogWarning($"Block validate or execute fails. Exception message {ex.Message}");
throw;
}
if (successLinks.Count == 0 || successLinks.Last().Height < chain.BestChainHeight)
{
Logger.LogWarning("No block execution succeed or no block is higher than best chain.");
await _chainManager.RemoveLongestBranchAsync(chain);
return(null);
}
await SetBestChainAsync(successLinks, chain);
await _chainManager.SetChainBlockLinkExecutionStatusesAsync(successLinks,
ChainBlockLinkExecutionStatus.ExecutionSuccess);
await PublishBestChainFoundEventAsync(chain, successBlocks);
Logger.LogInformation(
$"Attach blocks to best chain, status: {status}, best chain hash: {chain.BestChainHash}, height: {chain.BestChainHeight}");
return(blockLinks);
}
public async Task <List <ChainBlockLink> > GetNotExecutedChainBlockLinksAsync(Hash chainBranchBlockHash)
{
return(await _chainManager.GetNotExecutedBlocks(chainBranchBlockHash));
}