public UtxoReferee(Network network, string folderPath, IRPCClient rpc, CoordinatorRoundConfig roundConfig)
{
Network = Guard.NotNull(nameof(network), network);
FolderPath = Guard.NotNullOrEmptyOrWhitespace(nameof(folderPath), folderPath, trim: true);
RpcClient = Guard.NotNull(nameof(rpc), rpc);
RoundConfig = Guard.NotNull(nameof(roundConfig), roundConfig);
BannedUtxos = new ConcurrentDictionary <OutPoint, BannedUtxo>();
Directory.CreateDirectory(FolderPath);
if (File.Exists(BannedUtxosFilePath))
{
try
{
var toRemove = new List <string>(); // what's been confirmed
string[] allLines = File.ReadAllLines(BannedUtxosFilePath);
foreach (string line in allLines)
{
var bannedRecord = BannedUtxo.FromString(line);
var getTxOutResponse = RpcClient.GetTxOutAsync(bannedRecord.Utxo.Hash, (int)bannedRecord.Utxo.N, includeMempool: true).GetAwaiter().GetResult();
// Check if inputs are unspent.
if (getTxOutResponse is null)
{
toRemove.Add(line);
}
else
{
BannedUtxos.TryAdd(bannedRecord.Utxo, bannedRecord);
}
}
if (toRemove.Count != 0) // a little performance boost, often it'll be empty
{
var newAllLines = allLines.Where(x => !toRemove.Contains(x));
File.WriteAllLines(BannedUtxosFilePath, newAllLines);
}
Logger.LogInfo($"{allLines.Length} banned UTXOs are loaded from {BannedUtxosFilePath}.");
}
catch (Exception ex)
{
Logger.LogWarning($"Banned UTXO file got corrupted. Deleting {BannedUtxosFilePath}. {ex.GetType()}: {ex.Message}");
File.Delete(BannedUtxosFilePath);
}
}
else
{
Logger.LogInfo($"No banned UTXOs are loaded from {BannedUtxosFilePath}.");
}
}
public void UtxoRefereeSerialization()
{
var record = BannedUtxo.FromString("2018-11-23 15-23-14:1:44:2716e680f47d74c1bc6f031da22331564dd4c6641d7216576aad1b846c85d492:True:195");
Assert.Equal(new DateTimeOffset(2018, 11, 23, 15, 23, 14, TimeSpan.Zero), record.TimeOfBan);
Assert.Equal(1, record.Severity);
Assert.Equal(44u, record.Utxo.N);
Assert.Equal(new uint256("2716e680f47d74c1bc6f031da22331564dd4c6641d7216576aad1b846c85d492"), record.Utxo.Hash);
Assert.True(record.IsNoted);
Assert.Equal(195, record.BannedForRound);
DateTimeOffset dateTime = DateTimeOffset.UtcNow;
DateTimeOffset now = new(dateTime.Ticks - (dateTime.Ticks % TimeSpan.TicksPerSecond), TimeSpan.Zero);
var record2Init = new BannedUtxo(record.Utxo, 3, now, false, 99);
string record2Line = record2Init.ToString();
var record2 = BannedUtxo.FromString(record2Line);
Assert.Equal(now, record2.TimeOfBan);
Assert.Equal(3, record2.Severity);
Assert.Equal(44u, record2.Utxo.N);
Assert.Equal(new uint256("2716e680f47d74c1bc6f031da22331564dd4c6641d7216576aad1b846c85d492"), record2.Utxo.Hash);
Assert.False(record2.IsNoted);
Assert.Equal(99, record2.BannedForRound);
}