public async Task <BigInteger?> IndexCashinEventsForErc20TransactionHashAsync(string transactionHash)
{
BigInteger result = 0;
var transaction = await _ethereumIndexerService.GetTransactionAsync(transactionHash);
if (transaction == null)
{
return(null);
}
if (transaction.ErcTransfer != null)
{
//only one transfer could appear in deposit transaction
foreach (var item in transaction.ErcTransfer)
{
if (item.To?.ToLower() != _settingsWrapper.Ethereum.HotwalletAddress?.ToLower())
{
continue;
}
await _cashinEventRepository.InsertAsync(new CashinEvent
{
CoinAdapterAddress = Erc20HotWalletMarker,
Amount = item.Value,
TransactionHash = item.TransactionHash,
UserAddress = item.From,
ContractAddress = item.ContractAddress
});
BigInteger.TryParse(item.Value, out result);
}
}
return(result);
}
public async Task IndexCashinEventsForErc20Deposits()
{
var indexerStatusResponse = await _indexerApi.ApiSystemIsAliveGetWithHttpMessagesAsync();
if (indexerStatusResponse.Response.IsSuccessStatusCode)
{
var responseContent = await indexerStatusResponse.Response.Content.ReadAsStringAsync();
var indexerStatus = JObject.Parse(responseContent);
var lastIndexedBlock = BigInteger.Parse(indexerStatus["blockchainTip"].Value <string>());
var lastSyncedBlock = await GetLastSyncedBlockNumber(Erc20HotWalletMarker);
while (++lastSyncedBlock <= lastIndexedBlock - _baseSettings.Level2TransactionConfirmation)
{
var transfersResponse = await _indexerApi.ApiErc20TransferHistoryGetErc20TransfersPostAsync
(
new GetErc20TransferHistoryRequest
{
AssetHolder = _settingsWrapper.Ethereum.HotwalletAddress?.ToLower(),
BlockNumber = (long)lastSyncedBlock,
}
);
switch (transfersResponse)
{
case IEnumerable <Erc20TransferHistoryResponse> transfers:
foreach (var transfer in transfers)
{
// Ignore transfers from not deposit contract addresses
if (!await _depositContractRepository.Contains(transfer.FromProperty))
{
continue;
}
var coinTransactionMessage = new CoinTransactionMessage
{
TransactionHash = transfer.TransactionHash
};
await _cashinEventRepository.InsertAsync(new CashinEvent
{
CoinAdapterAddress = Erc20HotWalletMarker,
Amount = transfer.TransferAmount,
TransactionHash = transfer.TransactionHash,
UserAddress = transfer.FromProperty,
ContractAddress = transfer.Contract
});
await _cointTransactionQueue.PutRawMessageAsync(JsonConvert.SerializeObject(coinTransactionMessage));
}
break;
case ApiException exception:
throw new Exception($"Ethereum indexer responded with error: {exception.Error.Message}");
default:
throw new Exception($"Ethereum indexer returned unexpected response");
}
await _blockSyncedRepository.InsertAsync(new BlockSynced
{
BlockNumber = lastSyncedBlock.ToString(),
CoinAdapterAddress = Erc20HotWalletMarker
});
}
}
else
{
throw new Exception("Can not obtain ethereum indexer status.");
}
}