public void Execute(DeltaBuilderContext context)
{
context.ProducedDelta = new Delta
{
PreviousDeltaDfsHash = context.PreviousDeltaHash.ToArray().ToByteString(),
DeltaNumber = context.PreviousDelta.DeltaNumber + 1,
MerkleRoot = context.Candidate.Hash,
CoinbaseEntries =
{
context.CoinbaseEntry
},
PublicEntries =
{
context.Transactions
},
GasUsed = (long)context.Transactions.Sum(x => x.GasLimit),
TimeStamp = Timestamp.FromDateTime(_dateTimeProvider.UtcNow)
};
if (_logger.IsEnabled(LogEventLevel.Information))
{
_logger.Information("Built a delta {number} {hash} based on {previousHash} with {txCount} transactions", context.ProducedDelta.DeltaNumber, context.Candidate.Hash, context.ProducedDelta.PreviousDeltaDfsHash, context.ProducedDelta.PublicEntries.Count);
}
foreach (PublicEntry publicEntry in context.ProducedDelta.PublicEntries)
{
if (_logger.IsEnabled(LogEventLevel.Information))
{
_logger.Information("Entry {from} -> {to} with nonce {nonce}", publicEntry.SenderAddress.ToAddress(), publicEntry.ReceiverAddress.ToAddress(), publicEntry.Nonce);
}
}
}
public void Execute(DeltaBuilderContext context)
{
IList <PublicEntry> allTransactions = _retriever.GetMempoolTransactionsByPriority();
Guard.Argument(allTransactions, nameof(allTransactions))
.NotNull("Mempool content returned null, check the mempool is actively running");
IList <PublicEntry> includedTransactions = GetValidTransactionsForDelta(allTransactions);
context.Transactions = includedTransactions;
}
public void Execute(DeltaBuilderContext context)
{
if (_logger.IsEnabled(LogEventLevel.Debug))
{
_logger.Debug("Resolving previous delta by hash ({previousHash})", context.PreviousDeltaHash);
}
if (!_deltaCache.TryGetOrAddConfirmedDelta(context.PreviousDeltaHash, out Delta previousDelta))
{
throw new InvalidDataException("Cannot retrieve previous delta from cache during delta construction.");
}
context.PreviousDelta = previousDelta;
}
public void Execute(DeltaBuilderContext context)
{
if (_logger.IsEnabled(LogEventLevel.Debug))
{
_logger.Debug("Registering new delta with parent ({previousHash})", context.PreviousDeltaHash);
}
_deltaCache.AddLocalDelta(context.Candidate, context.ProducedDelta);
// for easier delta tracking when testing truffle
// if ((context.ProducedDelta.PublicEntries?.Count ?? 0) > 0)
// {
// _deltaCache.AddLocalDelta(context.Candidate, context.ProducedDelta);
// }
}
public void Execute(DeltaBuilderContext context)
{
byte[] salt = GetSaltFromPreviousDelta(context.PreviousDeltaHash);
IEnumerable <RawEntryWithSaltedAndHashedEntry> rawAndSaltedEntriesBySignature = context.Transactions.Select(e => new RawEntryWithSaltedAndHashedEntry(e, salt, _hashProvider));
// (Eα;Oα)
byte[] shuffledEntriesBytes = rawAndSaltedEntriesBySignature
.OrderBy(v => v.SaltedAndHashedEntry, ByteUtil.ByteListComparer.Default)
.SelectMany(v => v.RawEntry.ToByteArray())
.ToArray();
// dn
byte[] signaturesInOrder = context.Transactions
.Select(p => p.Signature.ToByteArray())
.OrderBy(s => s, ByteUtil.ByteListComparer.Default)
.SelectMany(b => b)
.ToArray();
// xf
UInt256 summedFees = context.Transactions.Sum(t => t.GasPrice.ToUInt256() * t.GasLimit);
//∆Ln,j = L(f/E) + dn + E(xf, j)
context.CoinbaseEntry = new CoinbaseEntry
{
Amount = summedFees.ToUint256ByteString(),
ReceiverPublicKey = _producerUniqueId.PublicKey.ToByteString()
};
byte[] globalLedgerStateUpdate = shuffledEntriesBytes
.Concat(signaturesInOrder)
.Concat(context.CoinbaseEntry.ToByteArray())
.ToArray();
//hj
CandidateDeltaBroadcast candidate = new CandidateDeltaBroadcast
{
// h∆j
Hash = MultiBase.Decode(_hashProvider.ComputeMultiHash(globalLedgerStateUpdate).ToCid())
.ToByteString(),
// Idj
ProducerId = _producerUniqueId,
PreviousDeltaDfsHash = context.PreviousDeltaHash.ToArray().ToByteString()
};
context.Candidate = candidate;
}
public void Execute(DeltaBuilderContext context)
{
var previousRoot = context.PreviousDelta.StateRoot;
Keccak stateRoot = previousRoot.IsEmpty ? Keccak.EmptyTreeHash : new Keccak(previousRoot.ToByteArray());
if (_logger.IsEnabled(LogEventLevel.Debug))
{
_logger.Error($"Running state calculation for delta {context.ProducedDelta.DeltaNumber}");
}
// here we need a read only delta executor (like in block builders - everything reverts in the end)
_stateProvider.StateRoot = stateRoot;
_deltaExecutor.CallAndReset(context.ProducedDelta, NullTxTracer.Instance);
_stateProvider.Reset();
}
///<inheritdoc />
public CandidateDeltaBroadcast BuildCandidateDelta(Cid previousDeltaHash)
{
DeltaBuilderContext context = new DeltaBuilderContext(previousDeltaHash);
foreach (IDeltaBuilderStep step in _steps)
{
step.Execute(context);
}
// to simplify cases when we test truffle
// if ((context.Transactions?.Count ?? 0) == 0)
// {
// return null;
// }
return(context.Candidate);
}