public async Task BroadCastTransaction(Guid operationId, Transaction tx)
{
var operation = await _operationMetaRepository.Get(operationId);
if (operation == null)
{
throw new BusinessException("Operation not found", ErrorCode.BadInputParameter);
}
if (await _operationEventRepository.Exist(operationId, OperationEventType.Broadcasted))
{
throw new BusinessException("Transaction already brodcasted", ErrorCode.TransactionAlreadyBroadcasted);
}
var hash = tx.GetHash().ToString();
await _transactionBlobStorage.AddOrReplaceTransaction(operationId, hash, TransactionBlobType.BeforeBroadcast, tx.ToHex());
var lastBlockHeight = await _blockChainProvider.GetLastBlockHeight();
await _blockChainProvider.BroadCastTransaction(tx);
await _observableOperationRepository.InsertOrReplace(ObervableOperation.Create(operation, BroadcastStatus.InProgress, hash, lastBlockHeight));
await _unconfirmedTransactionRepository.InsertOrReplace(UnconfirmedTransaction.Create(operationId, hash));
await _operationEventRepository.InsertIfNotExist(OperationEvent.Create(operationId, OperationEventType.Broadcasted));
await _spentOutputRepository.InsertSpentOutputs(operationId, tx.Inputs.Select(i => new Output(i.PrevOut)));
}
private async Task CheckUnconfirmedTransaction(IUnconfirmedTransaction unconfirmedTransaction)
{
var operationMeta = await _operationMetaRepository.GetAsync(unconfirmedTransaction.OperationId);
if (operationMeta == null)
{
_log.Warning(unconfirmedTransaction.ToJson(), "OperationMeta not found");
return;
}
var confirmationCount = await _blockChainProvider.GetTxConfirmationCountAsync(unconfirmedTransaction.TxHash);
var isCompleted = confirmationCount >= _confirmationsSettings.MinConfirmationsToDetectOperation;
;
if (isCompleted)
{
//Force update balances
var fromAddressUpdatedBalance = await operationMeta.Inputs.SelectAsync(async o => await _walletBalanceService.UpdateBtcBalanceAsync(o.Address,
_confirmationsSettings.MinConfirmationsToDetectOperation))
;
var toAddressUpdatedBalance = await operationMeta.Outputs.SelectAsync(async o =>
await _walletBalanceService.UpdateBtcBalanceAsync(o.Address,
_confirmationsSettings.MinConfirmationsToDetectOperation));
var operationCompletedLoggingContext = new
{
unconfirmedTransaction.OperationId,
unconfirmedTransaction.TxHash,
fromAddressUpdatedBalance,
toAddressUpdatedBalance
};
await _operationEventRepository.InsertIfNotExistAsync(OperationEvent.Create(
unconfirmedTransaction.OperationId,
OperationEventType.DetectedOnBlockChain, operationCompletedLoggingContext));
_log.Info(operationCompletedLoggingContext.ToJson(), "Operation completed");
await _unconfirmedTransactionRepository.DeleteIfExistAsync(unconfirmedTransaction.OperationId);
}
var status = isCompleted
? BroadcastStatus.Completed
: BroadcastStatus.InProgress;
var lastBlockHeight = await _blockChainProvider.GetLastBlockHeightAsync();
await _observableOperationRepository.InsertOrReplaceAsync(ObervableOperation.Create(operationMeta, status,
unconfirmedTransaction.TxHash,
lastBlockHeight));
}
public async Task DetectUnconfirmedTransactions()
{
var unconfirmedTxs = await _unconfirmedTransactionRepository.GetAll();
foreach (var unconfirmedTransaction in unconfirmedTxs)
{
var operationMeta = await _operationMetaRepository.Get(unconfirmedTransaction.OperationId);
if (operationMeta == null)
{
await _log.WriteWarningAsync(nameof(UpdateObservableOperations), nameof(DetectUnconfirmedTransactions),
unconfirmedTransaction.ToJson(), "OperationMeta not found");
continue;
}
var confirmationCount = await _blockChainProvider.GetTxConfirmationCount(unconfirmedTransaction.TxHash);
var isCompleted = confirmationCount >= _confirmationsSettings.MinConfirmationsToDetectOperation;
;
if (isCompleted)
{
//Force update balances
var fromAddressUpdatedBalance = await _walletBalanceService.UpdateBalance(operationMeta.FromAddress);
var toAddressUpdatedBalance = await _walletBalanceService.UpdateBalance(operationMeta.ToAddress);
var operationCompletedLoggingContext = new
{
unconfirmedTransaction.OperationId,
unconfirmedTransaction.TxHash,
fromAddressUpdatedBalance,
toAddressUpdatedBalance
};
await _operationEventRepository.InsertIfNotExist(OperationEvent.Create(unconfirmedTransaction.OperationId,
OperationEventType.DetectedOnBlockChain, operationCompletedLoggingContext));
await _log.WriteInfoAsync(nameof(UpdateBalanceFunctions), nameof(DetectUnconfirmedTransactions),
operationCompletedLoggingContext.ToJson(),
"Operation completed");
await _unconfirmedTransactionRepository.DeleteIfExist(unconfirmedTransaction.OperationId);
}
var status = isCompleted
? BroadcastStatus.Completed
: BroadcastStatus.InProgress;
await _observableOperationRepository.InsertOrReplace(ObervableOperation.Create(operationMeta, status,
unconfirmedTransaction.TxHash));
}
}
