public int Validate(Transaction transaction, ICollection <Transaction> siblings)
{
if (transaction.Instructions.OfType <TransferInstruction>().Any(x => x.Amount < 0))
{
return(1);
}
foreach (var instruction in transaction.Instructions.OfType <TransferInstruction>())
{
var sourceAddr = _addressEncoder.EncodeAddress(instruction.PublicKey, 0);
var balance = _txnRepo.GetAccountBalance(sourceAddr);
if (instruction.Amount > balance)
{
return(2);
}
}
return(0);
}
static void Main(string[] args)
{
var serviceProvider = ConfigureForMongoDB("DigitalCurrency", 10500);
//var serviceProvider = ConfigureForLiteDb("node.db", 10500);
_host = serviceProvider.GetService <IBlockchainNode>();
_miner = serviceProvider.GetService <IBlockMiner>();
_network = serviceProvider.GetService <IPeerNetwork>();
_sigService = serviceProvider.GetService <ISignatureService>();
_addressEncoder = serviceProvider.GetService <IAddressEncoder>();
_txnRepo = serviceProvider.GetService <ICustomInstructionRepository>();
_blockRepo = serviceProvider.GetService <IBlockRepository>();
_txnBuilder = serviceProvider.GetService <ITransactionBuilder>();
Console.Write("Enter passphrase:");
var phrase = Console.ReadLine();
var keys = _sigService.GetKeyPairFromPhrase(phrase);
var address = _addressEncoder.EncodeAddress(keys.PublicKey, 0);
Console.WriteLine($"Your address is {address}");
_network.Open();
PrintHelp();
while (true)
{
Console.Write(">");
var command = Console.ReadLine();
if (command == "exit")
{
break;
}
RunCommand(command, keys);
}
_network.Close();
}
static void RunCommand(string command, KeyPair keys)
{
var args = command.Split(' ');
var ownAddress = _addressEncoder.EncodeAddress(keys.PublicKey, 0);
switch (args[0])
{
case "help":
PrintHelp();
break;
case "mine-genesis":
Console.WriteLine("Mining...");
_miner.Start(keys, true);
break;
case "mine":
Console.WriteLine("Mining...");
_miner.Start(keys, false);
break;
case "stop-mining":
Console.WriteLine("Stopping...");
_miner.Stop();
break;
case "peers":
var peersIn = _network.GetPeersIn();
var peersOut = _network.GetPeersOut();
Console.WriteLine("Incoming peers");
PrintPeerList(peersIn);
Console.WriteLine("Outgoing peers");
PrintPeerList(peersOut);
break;
case "balance":
if (args.Length == 1)
{
Console.WriteLine($"Balance = {_txnRepo.GetAccountBalance(ownAddress)}");
}
else
{
Console.WriteLine($"Balance = {_txnRepo.GetAccountBalance(args[1])}");
}
break;
case "best-block":
var header = _blockRepo.GetBestBlockHeader().Result;
Console.WriteLine($"Height: {header.Height}, Id: {BitConverter.ToString(header.BlockId)}");
break;
case "gen-key":
var genkeys = _sigService.GetKeyPairFromPhrase(args[1]);
var address = _addressEncoder.EncodeAddress(genkeys.PublicKey, 0);
Console.WriteLine($"{address}");
break;
case "avg-time":
var avgTime = _blockRepo.GetAverageBlockTimeInSecs(DateTime.UtcNow.AddHours(-1), DateTime.UtcNow).Result;
Console.WriteLine($"Avg time: {avgTime}s");
break;
case "send":
if (args.Length != 3)
{
Console.WriteLine("invalid command");
return;
}
var instruction = new TransferInstruction()
{
PublicKey = keys.PublicKey,
Amount = Convert.ToInt32(args[2]),
Destination = _addressEncoder.ExtractPublicKeyHash(args[1])
};
Console.WriteLine($"Signing instruction");
_sigService.SignInstruction(instruction, keys.PrivateKey);
var txn = _txnBuilder.Build(new List <Instruction>()
{
instruction
}).Result;
Console.WriteLine($"Sending transaction {BitConverter.ToString(txn.TransactionId)}");
_host.SendTransaction(txn);
break;
default:
Console.WriteLine("invalid command");
break;
}
}
