public async Task <bool> TryUpdatePrivateBlockHeight()
{
eth_blockNumber response;
try
{
var connectionString = _cfg.GetPrivateGethConnectionString();
response = await FetchGethBlockResponse(connectionString);
}
catch (Exception ex)
{
Console.WriteLine("Failed to fetch private geth block height.");
Console.WriteLine(ex.JsonSerializeAsPrettyException());
return(false);
}
var nr = response.TryGetBlockNumber();
if (nr > (privateBlockNumber?.TryGetBlockNumber() ?? 0))
{
response.name = "private";
privateBlockNumber = response;
TryUpdateBlockTimes(response);
return(true);
}
return(false);
}
private void TryUpdateBlockTimes(eth_blockNumber currentBlock, long?currentBlockOverride = null)
{
lock (_locker)
{
var currentBlockNr = currentBlockOverride ?? currentBlock.TryGetBlockNumber();
if (lastBlockTimesBlockNr == currentBlockNr ||
currentBlockNr <= 0 ||
this.GetLastBlockNr().TryGetBlockNumber() > currentBlockNr)
{
return;
}
if (lastBlockTimesBlockNr <= 0 ||
currentBlockNr > lastBlockTimesBlockNr + 1)
{
lastBlockTimesBlockNr = currentBlockNr;
blockTimesStopWatch.Restart();
return;
}
blockTimes.Add(blockTimesStopWatch.ElapsedMilliseconds);
if (blockTimes.Count > _cfg.bockTimesAverageCount)
{
blockTimes.RemoveAt(0);
}
averageBlockTime = (long)blockTimes.Average();
lastBlockTimesBlockNr = currentBlockNr;
blockTimesStopWatch.Restart();
}
}
public async Task <bool> TryUpdateEtherscanBlockHeight()
{
eth_blockNumber response;
try
{
var requestUri = _cfg.GetEtherscanConnectionString() + _cfg.etherscanBlockHeightFetchQuery;
response = await FetchEtherscanBlockResponse(requestUri);
}
catch (Exception ex)
{
Console.WriteLine("Failed to fetch etherscan block height.");
Console.WriteLine(ex.JsonSerializeAsPrettyException());
return(false);
}
var nr = response.TryGetBlockNumber();
if (nr > (etherscanBlockNumber?.TryGetBlockNumber() ?? 0))
{
response.name = "etherscan";
etherscanBlockNumber = response;
TryUpdateBlockTimes(response);
return(true);
}
return(false);
}
/// <summary>
/// Returns Last Detected eth_blockNumber
/// </summary>
/// <returns>null or eth_blockNumber object</returns>
public eth_blockNumber GetLastBlockNr(bool apiOnly = false)
{
var blocks = GetAllBlocksNr(apiOnly: apiOnly);
eth_blockNumber max = null;
foreach (var block in blocks)
{
if (block == null)
{
continue;
}
if (max == null)
{
max = block;
continue;
}
if (max.blockNumber < block.blockNumber)
{
max = block;
continue;
}
//The most early detected block timestamp is used to keep consistent results of the API
if (max.blockNumber == block.blockNumber)
{
if (max.TimeStamp > block.TimeStamp)
{
max = block;
}
}
}
return(max);
}
