public static void Main(string[] args)
{
var blockService = new BlockService();
var serverInfoService = new ServerInfoService();
var assetService = new AssetExchangeService();
var currentHeight = serverInfoService.GetBlockchainStatus().Result.NumberOfBlocks;
var blockHeight = 335690;
Block <Transaction> block = null;
if (args.Length > 0 && args[0].Equals("-height", StringComparison.InvariantCultureIgnoreCase))
{
int.TryParse(args[1], out blockHeight);
}
Console.WriteLine("Start scanning blockchain at height: {0}", blockHeight);
for (; blockHeight < currentHeight; blockHeight++)
{
block = blockService.GetBlockIncludeTransactions(BlockLocator.ByHeight(blockHeight)).Result;
foreach (var transaction in block.Transactions.Where(transaction => transaction.SubType == TransactionSubType.ColoredCoinsDividendPayment))
{
var attachment = (ColoredCoinsDividendPaymentAttachment)transaction.Attachment;
var asset = assetService.GetAsset(attachment.AssetId).Result;
Console.WriteLine("{0} {1} {2} {3}", transaction.Timestamp.ToString("d"), transaction.TransactionId, asset.Name, attachment.AmountPerQnt.Nxt);
}
}
if (block != null)
{
Console.WriteLine("Last checked block height: {0} ({1})", blockHeight, block.Timestamp.ToString(CultureInfo.InvariantCulture));
}
Console.ReadLine();
}
public async Task CheckIncomingTransactions()
{
var lastBlockId = await wallet.GetLastBlockId();
int lastBlockHeight = 0;
try
{
var block = await blockService.GetBlock(BlockLocator.ByBlockId(lastBlockId));
lastBlockHeight = block.Height;
Console.WriteLine($"Last known block id {lastBlockId} is on height {lastBlockHeight}");
}
catch (NxtException e)
{
if (e.Message == "Unknown block")
{
Console.WriteLine($"Fork detected, unable to find block with id: {lastBlockId}. Manual rollback is needed!");
Environment.Exit(-1);
}
else
{
throw;
}
}
var blockchainStatus = await serverInfoService.GetBlockchainStatus();
var currentBlockHeight = blockchainStatus.NumberOfBlocks - 1;
var blocksToProcess = Math.Max(0, currentBlockHeight - lastBlockHeight - confirmations);
Console.WriteLine($"Current block height is: {currentBlockHeight} ({blocksToProcess} block(s) to process)");
var depositAccounts = await wallet.GetAllDepositAccounts();
var depositAddresses = new HashSet <string>(depositAccounts.Select(a => a.Address));
while (currentBlockHeight > lastBlockHeight + confirmations)
{
lastBlockHeight++;
Console.WriteLine($"Processing block @ height {lastBlockHeight}");
var block = await blockService.GetBlockIncludeTransactions(BlockLocator.ByHeight(lastBlockHeight), true);
var nxtTransactions = block.Transactions.Where(t => depositAddresses.Contains(t.RecipientRs) && !t.Phased)
.Union(block.ExecutedPhasedTransactions.Where(t => depositAddresses.Contains(t.RecipientRs)))
.Where(t => t.Amount.Nqt > 0);
foreach (var transaction in nxtTransactions)
{
Console.WriteLine($"Incoming {transaction.Amount.Nxt} NXT to {transaction.RecipientRs}");
var account = depositAccounts.Single(d => d.Address == transaction.RecipientRs);
account.BalanceNqt += transaction.Amount.Nqt;
await wallet.UpdateAccountBalance(account.Id, account.BalanceNqt);
}
await wallet.UpdateLastBlockId(block.BlockId);
}
}
private void CheckTransactions()
{
var height = 483000;
var service = _serviceProvider.GetService <IBlockService>();
while (height < TestSettings.MaxHeight)
{
var block = service.GetBlockIncludeTransactions(BlockLocator.ByHeight(height)).Result;
height++;
}
}
private List <TimeSpan> GetBlockTimespans(int startHeight, int stopHeight, IBlockService service)
{
var previousTimestamp = DateTime.MinValue;
var timeSpans = new List <TimeSpan>();
for (var i = startHeight; i <= stopHeight; i++)
{
var block = service.GetBlock(BlockLocator.ByHeight(i)).Result;
if (i != startHeight)
{
timeSpans.Add(block.Timestamp.Subtract(previousTimestamp));
}
previousTimestamp = block.Timestamp;
}
return(timeSpans);
}
public async Task <Block <ulong> > GetBlockAsync(int height)
{
try
{
var blockService = _serviceFactory.CreateBlockService();
var blockReply = await blockService.GetBlock(BlockLocator.ByHeight(height), requireBlock : requireBlock);
IsOnline = true;
return(blockReply);
}
catch (HttpRequestException)
{
IsOnline = false;
throw;
}
catch (JsonReaderException e)
{
IsOnline = false;
throw new Exception("Error when parsing response", e);
}
}
public async Task <BlockchainStatus> GetBlockchainStatus()
{
var status = new BlockchainStatus();
var blockchainStatusReply = await _serverInfoService.GetBlockchainStatus();
var lastBlock = await _blockService.GetBlock(BlockLocator.ByBlockId(blockchainStatusReply.LastBlockId));
var confirmedBlock = await _blockService.GetBlock(BlockLocator.ByHeight(blockchainStatusReply.NumberOfBlocks - 11));
var secureBlock = await _blockService.GetBlock(BlockLocator.ByHeight(blockchainStatusReply.NumberOfBlocks - 721));
status.LastKnownBlockId = blockchainStatusReply.LastBlockId.ToSigned();
status.LastKnownBlockTimestamp = lastBlock.Timestamp;
status.LastConfirmedBlockId = confirmedBlock.BlockId.ToSigned();
status.LastConfirmedBlockTimestamp = confirmedBlock.Timestamp;
status.LastSecureBlockId = secureBlock.BlockId.ToSigned();
status.LastSecureBlockTimestamp = secureBlock.Timestamp;
return(status);
}