public async Task <IExchangeEntity> MapAsync(EventLog <NewExchangeEventDTO> eventLog)
{
var exchangeAddress = eventLog.Event.Exchange;
var tokenAddress = eventLog.Event.Token;
var tokenInfo = await _tokenInfoProvider.GetAsync(tokenAddress);
var blockNumber = (ulong)(BigInteger)eventLog.Log.BlockNumber;
var tokenLiquidity = await _tokenLiquidityProvider.GetAsync(tokenAddress, exchangeAddress);
var ethLiquidity = await _ethLiquidityProvider.GetAsync(exchangeAddress);
var totalSupply = await _exchangeTotalSupplyProvider.GetAsync(exchangeAddress);
var theme = await _exchangeThemeProvider.GetAsync(tokenInfo.Symbol);
return(_exchangeEntityFactory.Create(exchangeAddress, tokenAddress, tokenInfo, blockNumber, ethLiquidity, tokenLiquidity, totalSupply, theme));
}
public async Task ProcessAsync(IEnumerable <IEventLog> events)
{
var groupedByExchangeEvents = events.GroupBy(x => x.Log.Address);
foreach (var exchangeEvents in groupedByExchangeEvents)
{
var groupedAndOrderedByBlockNumberEvents =
exchangeEvents.GroupBy(x => x.Log.BlockNumber).OrderBy(x => x.Key.Value);
foreach (var orderedBlockEvents in groupedAndOrderedByBlockNumberEvents)
{
var previousBlockNumber = (ulong)orderedBlockEvents.Key.Value - 1;
var tokenAddress = await _exchangeGatewayFactory(exchangeEvents.Key).GetTokenAddressAsync();
var exchangeState = new ExchangeState()
{
EthLiquidity = await _ethLiquidityProvider.GetAsync(exchangeEvents.Key,
previousBlockNumber),
TokenLiquidity = await _tokenLiquidityProvider.GetAsync(tokenAddress,
exchangeEvents.Key, previousBlockNumber)
};
foreach (var eventLog in orderedBlockEvents)
{
var entity = await _exchangeEventMapper.MapAsync(eventLog, exchangeState, tokenAddress);
exchangeState.Update(entity);
var totalSupply = await _exchangeTotalSupplyProvider.GetAsync(entity.ExchangeAddress);
await _exchangeRepository.Update(entity.ExchangeAddress, entity.EthLiquidityAfterEvent,
entity.TokenLiquidityAfterEvent, totalSupply);
await _exchangeEventsRepository.AddOrUpdateAsync(entity);
_logger.LogInformation("Event txHash {txHash} logIndex {logIndex} was processed",
eventLog.Log.TransactionHash, eventLog.Log.LogIndex.Value);
_logger.LogInformation("Updated state: {state}", ObjectDumper.Dump(exchangeState));
}
}
}
}
