public Task <CreateTransactionResponse> GetDestroyTransaction(BitcoinAddress bitcoinAddres, decimal modelAmount, IAsset asset, Guid transactionId)
{
return(Retry.Try(async() =>
{
var context = new TransactionBuildContext(_connectionParams.Network, _pregeneratedOutputsQueueFactory);
return await context.Build(async() =>
{
var builder = new TransactionBuilder();
var assetId = new BitcoinAssetId(asset.BlockChainAssetId, _connectionParams.Network).AssetId;
var coins =
(await _bitcoinOutputsService.GetColoredUnspentOutputs(bitcoinAddres.ToString(), assetId)).ToList();
builder.SetChange(bitcoinAddres, ChangeType.Colored);
builder.AddCoins(coins);
var assetMoney = new AssetMoney(assetId, modelAmount, asset.MultiplierPower);
var changeAddress = BitcoinAddress.Create(_baseSettings.ChangeAddress, _connectionParams.Network);
_transactionBuildHelper.SendAssetWithChange(builder, context, coins, changeAddress, assetMoney, bitcoinAddres);
await _transactionBuildHelper.AddFee(builder, context);
var tx = builder.BuildTransaction(true);
uint markerPosition;
var colorMarker = ColorMarker.Get(tx, out markerPosition);
for (var i = 0; i < colorMarker.Quantities.Length; i++)
{
if ((long)colorMarker.Quantities[i] == assetMoney.Quantity &&
tx.Outputs[i + 1].ScriptPubKey.GetDestinationAddress(_connectionParams.Network) == changeAddress)
{
colorMarker.Quantities[i] = 0;
break;
}
}
tx.Outputs[markerPosition].ScriptPubKey = colorMarker.GetScript();
await SaveSpentOutputs(transactionId, tx);
await _signRequestRepository.InsertTransactionId(transactionId);
await SaveNewOutputs(transactionId, tx, context);
return new CreateTransactionResponse(tx.ToHex(), transactionId);
});
}, exception => (exception as BackendException)?.Code == ErrorCode.TransactionConcurrentInputsProblem, 3, _log));
}
private Task GenerateColorOutputs(string assetId)
{
return(Retry.Try(async() =>
{
var asset = await _assetRepostory.GetItemAsync(assetId);
var setting = await GetAssetSetting(assetId);
var hotWallet = OpenAssetsHelper.ParseAddress(setting.HotWallet);
var assetIdObj = new BitcoinAssetId(asset.BlockChainAssetId).AssetId;
var outputs = await _bitcoinOutputsService.GetColoredUnspentOutputs(setting.HotWallet, assetIdObj, 0, false);
var balance = outputs.Aggregate(new AssetMoney(assetIdObj, 0), (accum, coin) => accum + coin.Amount);
var outputSize = new AssetMoney(assetIdObj, setting.OutputSize, asset.MultiplierPower);
var changeBalance = new AssetMoney(assetIdObj);
if (setting.ChangeWallet != setting.HotWallet && !string.IsNullOrEmpty(setting.ChangeWallet))
{
var changeOutputs = await _bitcoinOutputsService.GetColoredUnspentOutputs(setting.ChangeWallet, assetIdObj, 0, false);
changeBalance = changeOutputs.Aggregate(new AssetMoney(assetIdObj, 0), (accum, coin) => accum + coin.Amount);
}
if ((balance + changeBalance).ToDecimal(asset.MultiplierPower) < setting.MinBalance)
{
await SendBalanceNotifications(assetId, setting.HotWallet, setting.MinBalance);
}
var existingCoinsCount = outputs.Count(o => o.Amount <= outputSize && o.Amount.Quantity > outputSize.Quantity / 2);
if (existingCoinsCount > setting.MinOutputsCount)
{
return;
}
var generateCnt = setting.MaxOutputsCount - existingCoinsCount;
var coins = outputs.Where(o => o.Amount > outputSize * 2).ToList();
balance = coins.Aggregate(new AssetMoney(assetIdObj, 0), (accum, coin) => accum + coin.Amount);
generateCnt = Math.Min(generateCnt, (int)(balance.Quantity / outputSize.Quantity));
if (generateCnt == 0)
{
return;
}
await GenerateOutputs(generateCnt, coins, hotWallet, outputSize, asset, setting);
}, exception => (exception as BackendException)?.Code == ErrorCode.TransactionConcurrentInputsProblem, 3, _logger));
}
public Task <CreateTransactionResponse> GetDestroyTransaction(BitcoinAddress bitcoinAddres, decimal modelAmount, IAsset asset, Guid transactionId)
{
return(Retry.Try(async() =>
{
var context = _transactionBuildContextFactory.Create(_connectionParams.Network);
return await context.Build(async() =>
{
var builder = new TransactionBuilder();
var assetId = new BitcoinAssetId(asset.BlockChainAssetId, _connectionParams.Network).AssetId;
var coins =
(await _bitcoinOutputsService.GetColoredUnspentOutputs(bitcoinAddres.ToString(), assetId)).ToList();
builder.SetChange(bitcoinAddres, ChangeType.Colored);
builder.AddCoins(coins);
var assetMoney = new AssetMoney(assetId, modelAmount, asset.MultiplierPower);
var changeAddress = BitcoinAddress.Create(_baseSettings.ChangeAddress, _connectionParams.Network);
_transactionBuildHelper.SendAssetWithChange(builder, context, coins, changeAddress, assetMoney, bitcoinAddres);
await _transactionBuildHelper.AddFee(builder, context);
var tx = builder.BuildTransaction(true);
OpenAssetsHelper.DestroyColorCoin(tx, assetMoney, changeAddress, _connectionParams.Network);
await _spentOutputService.SaveSpentOutputs(transactionId, tx);
await SaveNewOutputs(transactionId, tx, context);
return new CreateTransactionResponse(tx.ToHex(), transactionId);
});
}, exception => (exception as BackendException)?.Code == ErrorCode.TransactionConcurrentInputsProblem, 3, _log));
}