private async Task UpdatePairs()
{
var response =
await _client.GetAsync(
$"https://api.blocklytics.org/uniswap/v1/exchanges?key={_blocklyticsApiKey}");
var dtoString = await response.Content.ReadAsStringAsync();
var blocklyticsPairs = JsonConvert.DeserializeObject <List <BlocklyticsUniswapPairsDTO> >(dtoString);
_pairs = blocklyticsPairs
.Where(pair => pair.Price != null && pair.Price.ToString() != "0")
.Select(pair =>
{
var uniswapPair = new UniswapPair
{
Timestamp = pair.Timestamp.ToUnixTimeMilliseconds(),
Pair = $"{pair.TokenSymbol}/ETH",
Price = (1 / (double)pair.Price).ToString(DecimalFormatter),
EthLiquidity = pair.EthLiquidity.ToString(DecimalFormatter),
TokenLiquidity = pair.TokenLiquidity.ToString(DecimalFormatter),
Volume24HrEth = pair.EthVolume.ToString(DecimalFormatter)
};
if (pair.TokenSymbol.Equals("hex", StringComparison.CurrentCultureIgnoreCase))
{
uniswapPair = UpdateHexUniswapPair(uniswapPair).Result;
}
return(uniswapPair);
})
.Where(IsActive);
_lastUpdated = DateTime.UtcNow;
}
public void Test1()
{
// Arrange
var pair = new UniswapPair
{
EthLiquidity = "49.82815291",
TokenLiquidity = "48745.233764732"
};
var orderBook = _factory.CreateOrderBook(pair);
// Act
Console.WriteLine("EthLiquidity: 10ETH");
Console.WriteLine("TokenLiquidity: 100TOKEN");
Console.WriteLine("Asks:");
orderBook.Asks.Reverse();
orderBook.Asks.ForEach(ask => Console.WriteLine($"{ask.PriceEth}\t\t{ask.TokenAmount}TOKEN"));
Console.WriteLine("Bids:");
orderBook.Bids.ForEach(bid => Console.WriteLine($"{bid.PriceEth}\t\t{bid.EthAmount}ETH"));
// Assert
}
// Temp fix for blocklytics liquidity pool flakiness
private async Task <UniswapPair> UpdateHexUniswapPair(UniswapPair hexPair)
{
var heartBalanceResponse = await _hexContract.GetFunction("balanceOf").CallDecodingToDefaultAsync(HexUniswapAddress);
var heartBalance = (BigInteger)heartBalanceResponse.First().Result;
var hexBalance = (decimal) new BigDecimal(heartBalance, 8 * -1);
var ethBalanceResponse = await _web3.Eth.GetBalance.SendRequestAsync(HexUniswapAddress);
var ethBalance = Web3.Convert.FromWei(ethBalanceResponse.Value);
if (ethBalance.Equals(0) || hexBalance.Equals(0))
{
return(hexPair);
}
hexPair.Timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
hexPair.Price = (ethBalance / hexBalance).ToString(DecimalFormatter);
hexPair.EthLiquidity = ethBalance.ToString(DecimalFormatter);
hexPair.TokenLiquidity = hexBalance.ToString(DecimalFormatter);
return(hexPair);
}
private static bool IsActive(UniswapPair pair) => pair.Price != "0" && pair.EthLiquidity != "0" && pair.TokenLiquidity != "0" && pair.Volume24HrEth != "0";
