public Task <Block> SealBlock(Block block, CancellationToken cancellationToken)
{
if (_poSSwitcher.IsPostMerge(block.Header))
{
return(Task.FromResult(block));
}
return(_preMergeSealValidator.SealBlock(block, cancellationToken));
}
private void OnBlockProcessorQueueEmpty(object sender, EventArgs e)
{
CancellationToken token;
lock (_syncToken)
{
_cancellationTokenSource = new CancellationTokenSource();
token = _cancellationTokenSource.Token;
}
if (!_sealEngine.CanSeal)
{
return;
}
Block block = PrepareBlock();
if (block == null)
{
if (_logger.IsError)
{
_logger.Error("Failed to prepare block for mining.");
}
return;
}
Block processedBlock = _processor.Process(block, ProcessingOptions.NoValidation | ProcessingOptions.ReadOnlyChain | ProcessingOptions.WithRollback, NullBlockTracer.Instance);
_sealEngine.SealBlock(processedBlock, token).ContinueWith(t =>
{
if (t.IsCompletedSuccessfully)
{
_blockTree.SuggestBlock(t.Result);
}
else if (t.IsFaulted)
{
_logger.Error("Mining failer", t.Exception);
}
else if (t.IsCanceled)
{
if (_logger.IsDebug)
{
_logger.Debug($"Mining block {processedBlock.ToString(Block.Format.HashAndNumber)} cancelled");
}
}
}, token);
}