public void OnBlockProcessingStart(Block block, ProcessingOptions options = ProcessingOptions.None)
{
if (!block.IsGenesis)
{
bool ValidatorWasAlreadyFinalized(KeyValuePair <long, AuRaParameters.Validator> validatorInfo) => _blockFinalizationManager.LastFinalizedBlockLevel >= validatorInfo.Key;
bool isProducingBlock = options.IsProducingBlock();
long previousBlockNumber = block.Number - 1;
bool isNotConsecutive = previousBlockNumber != _lastProcessedBlock;
if (isProducingBlock || isNotConsecutive)
{
if (TryGetLastValidator(previousBlockNumber, out var validatorInfo))
{
var parentHeader = _blockTree.FindParentHeader(block.Header, BlockTreeLookupOptions.None);
if (validatorInfo.Value.ValidatorType.CanChangeImmediately() || ValidatorWasAlreadyFinalized(validatorInfo))
{
SetCurrentValidator(validatorInfo, parentHeader);
}
else if (!isProducingBlock)
{
bool canSetValidatorAsCurrent = !TryGetLastValidator(validatorInfo.Key - 1, out var previousValidatorInfo);
long?finalizedAtBlockNumber = null;
if (!canSetValidatorAsCurrent)
{
SetCurrentValidator(previousValidatorInfo, parentHeader);
finalizedAtBlockNumber = _blockFinalizationManager.GetLastLevelFinalizedBy(block.ParentHash);
canSetValidatorAsCurrent = finalizedAtBlockNumber >= validatorInfo.Key;
}
if (canSetValidatorAsCurrent)
{
SetCurrentValidator(finalizedAtBlockNumber ?? validatorInfo.Key, validatorInfo.Value, parentHeader);
}
}
}
}
}
_currentValidator?.OnBlockProcessingStart(block, options);
}
private PendingValidators TryGetInitChangeFromPastBlocks(Keccak blockHash)
{
PendingValidators pendingValidators = null;
var lastFinalized = _blockFinalizationManager.GetLastLevelFinalizedBy(blockHash);
var toBlock = Math.Max(lastFinalized, InitBlockNumber);
var block = _blockTree.FindBlock(blockHash, BlockTreeLookupOptions.None);
while (block?.Number >= toBlock)
{
var receipts = _receiptFinder.Get(block) ?? Array.Empty <TxReceipt>();
if (ValidatorContract.CheckInitiateChangeEvent(block.Header, receipts, out var potentialValidators))
{
if (Validators.SequenceEqual(potentialValidators))
{
break;
}
pendingValidators = new PendingValidators(block.Number, block.Hash, potentialValidators);
}
block = _blockTree.FindBlock(block.ParentHash, BlockTreeLookupOptions.None);
}
return(pendingValidators);
}
public override void OnBlockProcessingStart(Block block, ProcessingOptions options = ProcessingOptions.None)
{
if (block.IsGenesis)
{
return;
}
var isProducingBlock = options.IsProducingBlock();
var isProcessingBlock = !isProducingBlock;
var isInitBlock = InitBlockNumber == block.Number;
var notConsecutiveBlock = block.Number - 1 > _lastProcessedBlockNumber || _lastProcessedBlockNumber == 0;
var shouldLoadValidators = Validators == null || notConsecutiveBlock || isProducingBlock;
var mainChainProcessing = !ForSealing && isProcessingBlock;
if (shouldLoadValidators)
{
Validators = isInitBlock || notConsecutiveBlock
? LoadValidatorsFromContract(BlockTree.FindParentHeader(block.Header, BlockTreeLookupOptions.None))
: ValidatorStore.GetValidators();
if (mainChainProcessing)
{
if (_logger.IsInfo)
{
_logger.Info($"{(isInitBlock ? "Initial" : "Current")} contract validators ({Validators.Length}): [{string.Join<Address>(", ", Validators)}].");
}
}
}
if (isInitBlock)
{
if (mainChainProcessing)
{
ValidatorStore.SetValidators(InitBlockNumber, Validators);
}
InitiateChange(block, Validators.ToArray(), isProcessingBlock, true);
}
else
{
if (mainChainProcessing && notConsecutiveBlock)
{
bool loadedValidatorsAreSameInStore = (ValidatorStore.GetValidators()?.SequenceEqual(Validators) == true);
if (!loadedValidatorsAreSameInStore)
{
ValidatorStore.SetValidators(_blockFinalizationManager.GetLastLevelFinalizedBy(block.ParentHash), Validators);
}
}
if (isProcessingBlock)
{
bool reorganisationHappened = block.Number <= _lastProcessedBlockNumber;
if (reorganisationHappened)
{
var reorganisationToBlockBeforePendingValidatorsInitChange = block.Number <= CurrentPendingValidators?.BlockNumber;
SetPendingValidators(reorganisationToBlockBeforePendingValidatorsInitChange ? null : LoadPendingValidators(), reorganisationToBlockBeforePendingValidatorsInitChange);
}
else if (block.Number > _lastProcessedBlockNumber + 1) // blocks skipped, like fast sync
{
SetPendingValidators(TryGetInitChangeFromPastBlocks(block.ParentHash), true);
}
}
else
{
// if we are not processing blocks we are not on consecutive blocks.
// We need to initialize pending validators from db on each block being produced.
SetPendingValidators(LoadPendingValidators());
}
}
base.OnBlockProcessingStart(block, options);
FinalizePendingValidatorsIfNeeded(block.Header, isProcessingBlock);
_lastProcessedBlockNumber = block.Number;
}