public DataChain(int chainId, uint chainIndex, Node.Node node, CoreChain coreChain, ServiceChain serviceChain, ChainKeyStore keyStore, int attachementKey) : base(ChainType.Data, chainId, chainIndex, node)
{
_coreChain = coreChain;
_serviceChain = serviceChain;
Attachements = node.AttachementManager;
ChainKeyIndex = keyStore.KeyIndex;
ChainKey = keyStore.DecryptedKey;
KeyStore = keyStore;
AttachementKey = attachementKey;
var endPoints = new HashSet <AvailableEndPoint>();
var chainInfo = _coreChain.GetChainInfo(ChainId);
if (chainInfo != null)
{
var cep = chainInfo.GetPublicEndpoints();
foreach (var ep in cep)
{
var e = new Uri(ep);
if (IsValidAvailableEndPoint(e))
{
endPoints.Add(new AvailableEndPoint(e));
}
}
}
AvailableEndpoints = new List <AvailableEndPoint>(endPoints);
}
public ServiceChain(int chainId, Node.Node node, CoreChain coreChain, ChainKeyStore keyStore) : base(ChainType.Service, chainId, 0, node)
{
CoreChain = coreChain;
var endPoints = new HashSet <AvailableEndPoint>();
_chainKeyIndex = keyStore.KeyIndex;
_chainKey = keyStore.DecryptedKey;
KeyStore = keyStore;
var chainInfo = CoreChain.GetChainInfo(ChainId);
if (chainInfo != null)
{
var cep = chainInfo.GetPublicEndpoints();
foreach (var ep in cep)
{
var e = new Uri(ep);
if (IsValidAvailableEndPoint(e))
{
endPoints.Add(new AvailableEndPoint(e));
}
}
}
AvailableEndpoints = new List <AvailableEndPoint>(endPoints);
}
public CoreBlockGenerator(CoreChain coreChain, CoreBlock lastBlock)
{
_coreChain = coreChain;
_lastBlock = lastBlock;
_blockState = coreChain.GetChainInfo(Protocol.CoreChainId).LastState;
NextAccountId = lastBlock.NextAccountId;
NextChainId = lastBlock.NextChainId;
}
public ServiceBlockGenerator(CoreChain coreChain, ServiceChain serviceChain, MaintainChain maintainChain, ServiceBlock lastBlock)
{
ChainId = serviceChain.ChainId;
_blockInfo = new ServiceBlockInfo(serviceChain);
_coreChain = coreChain;
_serviceChain = serviceChain;
_maintainChain = maintainChain;
_lastBlock = lastBlock;
_chainInfo = coreChain.GetChainInfo(ChainId);
_blockState = _chainInfo.LastState;
}
ChainInfo GetChainInfo(int chainId)
{
if (_chains.TryGetValue(chainId, out var chainInfo))
{
return(chainInfo);
}
chainInfo = _coreChain.GetChainInfo(chainId, true, true);
if (chainInfo == null)
{
return(null);
}
_chains[chainId] = chainInfo;
return(chainInfo);
}
public async Task <TransactionValidationResult> ValidateDataTransaction(DataTransaction transaction)
{
var userCode = 0L;
var result = TransactionResultTypes.Unknown;
var message = string.Empty;
TransactionValidation nodeValidation = null;
var type = transaction.TransactionType;
var chainInfo = _coreChain.GetChainInfo(ChainId);
var accountId = transaction.AccountId;
var service = _node.ChainManager.GetService(ChainId);
if (chainInfo == null)
{
result = TransactionResultTypes.ChainNotFound;
goto end;
}
if (service == null)
{
result = TransactionResultTypes.ChainServiceUnavailable;
goto end;
}
if (!_chainKeyValid)
{
var chainKey = chainInfo.GetValidChainKey(ChainIndex, ChainKeyIndex, Time.Timestamp);
if (chainKey == null || chainKey.PublicKey != ChainKey.PublicKey)
{
result = TransactionResultTypes.ChainNodeInvalid;
goto end;
}
_chainKeyValid = true;
}
if (transaction == null)
{
result = TransactionResultTypes.InvalidTransaction;
goto end;
}
if (!transaction.IsDataTransactionValid)
{
result = TransactionResultTypes.InvalidContent;
goto end;
}
if (BlockStorage.History.ContainsTransactionIdentifier(transaction))
{
result = TransactionResultTypes.AlreadyProcessed;
goto end;
}
var coreAccount = _coreChain.GetCoreAccount(accountId);
if (coreAccount == null)
{
result = TransactionResultTypes.InvalidCoreAccount;
goto end;
}
var serviceAccount = _serviceChain.GetServiceAccount(accountId);
if (transaction.SignKeyIndex == Protocol.CoreAccountSignKeyIndex)
{
if (!transaction.IsSignatureValid(coreAccount.AccountKey, null))
{
result = TransactionResultTypes.InvalidSignature;
goto end;
}
}
else
{
if (serviceAccount == null)
{
result = TransactionResultTypes.InvalidServiceAccount;
goto end;
}
var accountKey = serviceAccount.GetValidAccountKey(transaction.SignKeyIndex, transaction.Timestamp);
if (accountKey == null)
{
result = TransactionResultTypes.InvalidServiceAccountKey;
goto end;
}
if (accountKey.IsExpired())
{
result = TransactionResultTypes.Expired;
goto end;
}
if (!transaction.IsSignatureValid(coreAccount.AccountKey, accountKey))
{
result = TransactionResultTypes.InvalidSignature;
goto end;
}
}
{
var(featResult, featCode) = ValidateTransactionFeatures((ushort)DataTransactionTypes.FeatureRequest, transaction);
if (featResult != TransactionResultTypes.Ok)
{
result = featResult;
userCode = featCode;
goto end;
}
}
if (type == DataTransactionTypes.Attachement)
{
if (!Attachements.AreAttachementsUploaded(transaction as AttachementDataTransaction))
{
result = TransactionResultTypes.AttachementsNotUploaded;
goto end;
}
}
var purchaseRequired = transaction.GetFeature <RequiredPurchase>(RequiredPurchase.FeatureId);
if (purchaseRequired != null && purchaseRequired.RequiredPurchaseType != PurchaseTypes.None)
{
if (!serviceAccount.HasRequiredTransactionPurchase(transaction, purchaseRequired))
{
result = TransactionResultTypes.PurchaseRequired;
goto end;
}
}
var validation = await service.IsDataTransactionValid(transaction);
userCode = validation.UserCode;
message = validation.Message;
if (!validation.IsOK)
{
if (validation.Result == ServiceResultTypes.PurchaseRequired)
{
result = TransactionResultTypes.PurchaseRequired;
}
else
{
result = TransactionResultTypes.ChainServiceErrorResponse;
}
goto end;
}
result = TransactionResultTypes.Ok;
nodeValidation = new TransactionValidation(transaction, ChainKeyIndex, ChainKey);
end:
return(new TransactionValidationResult(result, userCode, message, nodeValidation));
}
void ConsumeTransaction(CommitItems commitItems, TransactionItem <ServiceTransaction> item)
{
var transaction = item.Transaction;
if (transaction.TransactionId <= LastProcessedTransactionId)
{
return;
}
if (transaction.TargetChainId == ChainId)
{
var type = transaction.TransactionType;
var accountId = transaction.AccountId;
var account = GetServiceAccount(accountId);
if (type == ServiceTransactionTypes.Join)
{
var joinTransaction = transaction as JoinServiceTransaction;
if (account == null)
{
account = new ServiceAccount(accountId, ChainId, joinTransaction.Timestamp);
if (joinTransaction.AccountKey != null)
{
account.AddAccountKey(joinTransaction.AccountKey, joinTransaction.Timestamp);
}
lock (_lock)
_serviceAccounts[accountId] = account;
_serviceAccountStorage.AddEntry(accountId, account.ToByteArray());
return; // skip dirty account stuff
}
if (joinTransaction.AccountKey != null)
{
account.AddAccountKey(joinTransaction.AccountKey, joinTransaction.Timestamp);
commitItems.DirtyAccounts.Add(accountId);
}
}
else if (type == ServiceTransactionTypes.Purchase)
{
var purchaseTransaction = transaction as PurchaseServiceTransaction;
var purchase = CoreChain.GetChainInfo(ChainId).GetPurchase(purchaseTransaction.PurchaseGroupId, purchaseTransaction.PurchaseItemId);
if (purchase != null)
{
var targetAccount = GetServiceAccount(purchaseTransaction.ReceiverAccountId);
if (targetAccount != null && purchase != null)
{
targetAccount.AddPurchase(purchaseTransaction, purchase);
commitItems.DirtyAccounts.Add(targetAccount.AccountId);
}
}
}
else if (type == ServiceTransactionTypes.RequestRevenue)
{
var revenueTransaction = transaction as RequestRevenueServiceTransaction;
account.UpdateTotelRevenuePayout(revenueTransaction.CurrentTotalRevenuePayout + revenueTransaction.PayoutAmount);
}
ConsumeTransactionFeatures((ushort)ServiceTransactionTypes.FeatureRequest, transaction, account, commitItems);
commitItems.DirtyAccounts.Add(accountId);
}
}