public async Task RegisterWalletAsync(DepositWalletKey key)
{
var client = _blockchainApiClientProvider.Get(key.BlockchainId);
await _enrolledBalanceRepository.SetBalanceAsync(key, 0, 0);
await client.StartBalanceObservationAsync(key.WalletAddress);
}
public async Task <string> BuildTransactionAsync(
Guid operationId,
string blockchainId,
string blockchainAssetId,
string fromAddress,
string fromAddressContext,
string toAddress,
string amount,
bool includeFee
)
{
var client = _blockchainApiClientProvider.Get(blockchainId);
var asset = await _assetService.GetBlockchainAsset(blockchainId, blockchainAssetId);
var amountDecimal = ConverterExtensions.ConvertFromString(amount, asset.Accuracy, asset.Accuracy);
var buildedTransaction = await client.BuildSingleTransactionAsync(
operationId,
fromAddress,
fromAddressContext,
toAddress,
asset,
amountDecimal,
includeFee
);
return(buildedTransaction.TransactionContext);
}
public async Task <BlockchainAsset> GetBlockchainAsset(string blockchainId, string blockchainAssetId)
{
if (!_assets.TryGetValue(blockchainAssetId, out var asset))
{
return(null);
}
//if (_dictionary.TryGetValue(asset.BlockchainId, out var value))
//{
// if (value.TryGetValue(blockchainAssetId, out var blockchainAsset))
// {
// return blockchainAsset;
// }
//}
var client = _blockchainApiClientProvider.Get(blockchainId);
var assets = await client.GetAllAssetsAsync(100);
if (!assets.TryGetValue(asset.BlockchainAssetId, out var blockchainAsset))
{
return(null);
}
return(blockchainAsset);
}
public DepositWalletsBalanceProcessingPeriodicalHandler(
ILogFactory logFactory,
TimeSpan period,
int batchSize,
string blockchainType,
IBlockchainApiClientProvider blockchainApiClientProvider,
ICqrsEngine cqrsEngine,
IAssetsServiceWithCache assetsService,
IEnrolledBalanceRepository enrolledBalanceRepository,
IHotWalletsProvider hotWalletsProvider,
ICashinRepository cashinRepository,
IDepositWalletLockRepository depositWalletLockRepository,
IChaosKitty chaosKitty)
{
_logFactory = logFactory;
_batchSize = batchSize;
_blockchainType = blockchainType;
_blockchainApiClient = blockchainApiClientProvider.Get(blockchainType);
_cqrsEngine = cqrsEngine;
_assetsService = assetsService;
_enrolledBalanceRepository = enrolledBalanceRepository;
_hotWalletsProvider = hotWalletsProvider;
_cashinRepository = cashinRepository;
_depositWalletLockRepository = depositWalletLockRepository;
_chaosKitty = chaosKitty;
_timer = new TimerTrigger(
$"{nameof(DepositWalletsBalanceProcessingPeriodicalHandler)} : {blockchainType}",
period,
_logFactory);
_timer.Triggered += ProcessBalancesAsync;
}
/// <exception cref="ArgumentValidationException"></exception>
private Task <IBlockchainApiClient> ThrowOnNotSupportedBlockchainType(string blockchainType)
{
IBlockchainApiClient blockchainClient;
try
{
blockchainClient = _blockchainApiClientProvider.Get(blockchainType); //throws
}
catch (ArgumentValidationException)
{
throw new ArgumentValidationException($"{blockchainType} is not a valid type", "blockchainType");
}
return(Task.FromResult(blockchainClient));
}
public async Task<CommandHandlingResult> Handle(ClearBroadcastedTransactionCommand command, IEventPublisher publisher)
{
var apiClient = _apiClientProvider.Get(command.BlockchainType);
await apiClient.ForgetBroadcastedTransactionsAsync(command.TransactionId);
_chaosKitty.Meow(command.TransactionId);
publisher.PublishEvent(new BroadcastedTransactionClearedEvent
{
OperationId = command.OperationId,
TransactionId = command.TransactionId
});
return CommandHandlingResult.Ok();
}
public async Task <CommandHandlingResult> Handle(WaitForTransactionEndingCommand command, IEventPublisher publisher)
{
var apiClient = _apiClientProvider.Get(command.BlockchainType);
// TODO: Cache it
var blockchainAsset = await apiClient.GetAssetAsync(command.BlockchainAssetId);
BaseBroadcastedTransaction transaction;
OperationOutput[] transactionOutputs = null;
if (command.Outputs.Length > 1)
{
var manyOutputsTransaction = await apiClient.TryGetBroadcastedTransactionWithManyOutputsAsync
(
command.TransactionId,
blockchainAsset
);
transaction = manyOutputsTransaction;
if (manyOutputsTransaction != null)
{
transactionOutputs = manyOutputsTransaction.Outputs
.Select(o => new OperationOutput
{
Address = o.ToAddress,
Amount = o.Amount
})
.ToArray();
}
}
else if (command.Outputs.Length == 1)
{
var singleTransaction = await apiClient.TryGetBroadcastedSingleTransactionAsync
(
command.TransactionId,
blockchainAsset
);
transaction = singleTransaction;
if (singleTransaction != null)
{
transactionOutputs = new[]
{
new OperationOutput
{
Address = command.Outputs.Single().Address,
Amount = singleTransaction.Amount
}
};
}
}
else
{
throw new InvalidOperationException("There should be at least one output");
}
if (transaction == null)
{
_log.Info("Blockchain API returned no transaction. Assuming, that it's already was cleared", command);
// Transaction already has been forgotten, this means,
// that process has been went further and no events should be generated here.
return(CommandHandlingResult.Ok());
}
if (transactionOutputs == null)
{
throw new InvalidOperationException("Transaction outputs should be not null here");
}
switch (transaction.State)
{
case BroadcastedTransactionState.InProgress:
return(CommandHandlingResult.Fail(_delayProvider.WaitForTransactionRetryDelay));
case BroadcastedTransactionState.Completed:
publisher.PublishEvent(new TransactionExecutionCompletedEvent
{
OperationId = command.OperationId,
TransactionId = command.TransactionId,
TransactionNumber = command.TransactionNumber,
TransactionHash = transaction.Hash,
TransactionOutputs = transactionOutputs,
TransactionFee = transaction.Fee,
TransactionBlock = transaction.Block
});
return(CommandHandlingResult.Ok());
case BroadcastedTransactionState.Failed:
if (transaction.ErrorCode == BlockchainErrorCode.NotEnoughBalance ||
transaction.ErrorCode == BlockchainErrorCode.BuildingShouldBeRepeated)
{
publisher.PublishEvent(new TransactionExecutionRepeatRequestedEvent
{
OperationId = command.OperationId,
TransactionId = command.TransactionId,
TransactionNumber = command.TransactionNumber,
ErrorCode = transaction.ErrorCode.Value.MapToTransactionExecutionResult(),
Error = transaction.Error
});
}
else
{
publisher.PublishEvent(new TransactionExecutionFailedEvent
{
OperationId = command.OperationId,
TransactionId = command.TransactionId,
TransactionNumber = command.TransactionNumber,
ErrorCode = transaction.ErrorCode?.MapToTransactionExecutionResult() ?? TransactionExecutionResult.UnknownError,
Error = transaction.Error
});
}
return(CommandHandlingResult.Ok());
default:
throw new ArgumentOutOfRangeException
(
nameof(transaction.State),
$"Transaction state [{transaction.State}] is not supported."
);
}
}
/// <summary>
///
/// </summary>
/// <param name="cashoutModel"></param>
/// <returns>
/// ValidationError - client error
/// ArgumentValidationException - developer error
/// </returns>
public async Task <IReadOnlyCollection <ValidationError> > ValidateAsync(CashoutModel cashoutModel)
{
var errors = new List <ValidationError>(1);
if (cashoutModel == null)
{
return(FieldNotValidResult("cashoutModel can't be null"));
}
if (string.IsNullOrEmpty(cashoutModel.AssetId))
{
return(FieldNotValidResult("cashoutModel.AssetId can't be null or empty"));
}
Asset asset;
try
{
asset = await _assetsService.TryGetAssetAsync(cashoutModel.AssetId);
}
catch (Exception)
{
throw new ArgumentValidationException($"Asset with Id-{cashoutModel.AssetId} does not exists",
"assetId");
}
if (asset.IsDisabled)
{
errors.Add(ValidationError.Create(ValidationErrorType.None, $"Asset {asset.Id} is disabled"));
}
if (asset == null)
{
throw new ArgumentValidationException($"Asset with Id-{cashoutModel.AssetId} does not exists",
"assetId");
}
var isAddressValid = true;
IBlockchainApiClient blockchainClient = null;
if (asset.Id != LykkeConstants.SolarAssetId)
{
if (string.IsNullOrEmpty(asset.BlockchainIntegrationLayerId))
{
throw new ArgumentValidationException(
$"Given asset Id-{cashoutModel.AssetId} is not a part of Blockchain Integration Layer",
"assetId");
}
blockchainClient = _blockchainApiClientProvider.Get(asset.BlockchainIntegrationLayerId);
}
if (string.IsNullOrEmpty(cashoutModel.DestinationAddress) ||
!cashoutModel.DestinationAddress.IsValidPartitionOrRowKey() ||
asset.Id != LykkeConstants.SolarAssetId && blockchainClient != null &&
!await blockchainClient.IsAddressValidAsync(cashoutModel.DestinationAddress) ||
asset.Id == LykkeConstants.SolarAssetId &&
!SolarCoinValidation.ValidateAddress(cashoutModel.DestinationAddress)
)
{
isAddressValid = false;
errors.Add(ValidationError.Create(ValidationErrorType.AddressIsNotValid, "Address is not valid"));
}
if (isAddressValid)
{
if (asset.Id != LykkeConstants.SolarAssetId)
{
var isBlocked = await _blackListService.IsBlockedWithoutAddressValidationAsync
(
asset.BlockchainIntegrationLayerId,
cashoutModel.DestinationAddress
);
if (isBlocked)
{
errors.Add(ValidationError.Create(ValidationErrorType.BlackListedAddress, "Address is in the black list"));
}
}
if (cashoutModel.Volume.HasValue && Math.Abs(cashoutModel.Volume.Value) < (decimal)asset.CashoutMinimalAmount)
{
var minimalAmount = asset.CashoutMinimalAmount.GetFixedAsString(asset.Accuracy).TrimEnd('0');
errors.Add(ValidationError.Create(ValidationErrorType.LessThanMinCashout,
$"Please enter an amount greater than {minimalAmount}"));
}
if (asset.Id != LykkeConstants.SolarAssetId)
{
var blockchainSettings = _blockchainSettingsProvider.Get(asset.BlockchainIntegrationLayerId);
if (cashoutModel.DestinationAddress == blockchainSettings.HotWalletAddress)
{
errors.Add(ValidationError.Create(ValidationErrorType.HotwalletTargetProhibited,
"Hot wallet as destitnation address prohibited"));
}
var isPublicExtensionRequired =
_blockchainWalletsCacheService.IsPublicExtensionRequired(asset.BlockchainIntegrationLayerId);
if (isPublicExtensionRequired)
{
var hotWalletParseResult = await _blockchainWalletsClient.ParseAddressAsync(
asset.BlockchainIntegrationLayerId,
blockchainSettings.HotWalletAddress);
var destAddressParseResult = await _blockchainWalletsClient.ParseAddressAsync(
asset.BlockchainIntegrationLayerId,
cashoutModel.DestinationAddress);
if (hotWalletParseResult.BaseAddress == destAddressParseResult.BaseAddress)
{
var existedClientIdAsDestination = await _blockchainWalletsClient.TryGetClientIdAsync(
asset.BlockchainIntegrationLayerId,
cashoutModel.DestinationAddress);
if (existedClientIdAsDestination == null)
{
errors.Add(ValidationError.Create(ValidationErrorType.DepositAddressNotFound,
$"Deposit address {cashoutModel.DestinationAddress} not found"));
}
}
var forbiddenCharacterErrors = await ValidateForForbiddenCharsAsync(
destAddressParseResult.BaseAddress,
destAddressParseResult.AddressExtension,
asset.BlockchainIntegrationLayerId);
if (forbiddenCharacterErrors != null)
{
errors.AddRange(forbiddenCharacterErrors);
}
if (!string.IsNullOrEmpty(destAddressParseResult.BaseAddress))
{
if (!cashoutModel.DestinationAddress.Contains(destAddressParseResult.BaseAddress))
{
errors.Add(ValidationError.Create(ValidationErrorType.FieldIsNotValid,
"Base Address should be part of destination address"));
}
// full address is already checked by integration,
// we don't need to validate it again,
// just ensure that base address is not black-listed
var isBlockedBase = await _blackListService.IsBlockedWithoutAddressValidationAsync(
asset.BlockchainIntegrationLayerId,
destAddressParseResult.BaseAddress);
if (isBlockedBase)
{
errors.Add(ValidationError.Create(ValidationErrorType.BlackListedAddress,
"Base Address is in the black list"));
}
}
}
}
if (cashoutModel.ClientId.HasValue)
{
var destinationClientId = await _blockchainWalletsClient.TryGetClientIdAsync
(
asset.BlockchainIntegrationLayerId,
cashoutModel.DestinationAddress
);
if (destinationClientId.HasValue && destinationClientId == cashoutModel.ClientId.Value)
{
var error = ValidationError.Create
(
ValidationErrorType.CashoutToSelfAddress,
"Withdrawals to the deposit wallet owned by the customer himself prohibited"
);
errors.Add(error);
}
}
}
return(errors);
}