static Coin CreateTransactionFeeCoin(PubKey destination, NoSqlTransactionRepository txRepo) { var bitcoinProviderTransaction = new Transaction() { Outputs = { new TxOut("0.0001" , destination) } }; txRepo.Put(bitcoinProviderTransaction.GetHash(), bitcoinProviderTransaction); return new Coin(new OutPoint(bitcoinProviderTransaction, 0), bitcoinProviderTransaction.Outputs[0]); }
public async Task<bool> EnsurePreviousLoadedAsync(OrderedBalanceChange change) { if(!NeedLoading(change)) return true; var parentIds = change.SpentOutpoints.Select(s => s.Hash).ToArray(); var parents = await GetTransactionsAsync(false, ColoredBalance, parentIds).ConfigureAwait(false); var cache = new NoSqlTransactionRepository(); foreach(var parent in parents.Where(p => p != null)) cache.Put(parent.TransactionId, parent.Transaction); if(change.SpentCoins == null) { var success = await change.EnsureSpentCoinsLoadedAsync(cache).ConfigureAwait(false); if(!success) return false; } if(ColoredBalance && change.ColoredTransaction == null) { var indexerRepo = new IndexerColoredTransactionRepository(Configuration); indexerRepo.Transactions = new CompositeTransactionRepository(new[] { new ReadOnlyTransactionRepository(cache), indexerRepo.Transactions }); var success = await change.EnsureColoredTransactionLoadedAsync(indexerRepo).ConfigureAwait(false); if(!success) return false; } var entity = change.ToEntity(); if(!change.IsEmpty) { await Configuration.GetBalanceTable().ExecuteAsync(TableOperation.Merge(entity)).ConfigureAwait(false); } else { try { await Configuration.GetTransactionTable().ExecuteAsync(TableOperation.Delete(entity)).ConfigureAwait(false); } catch(StorageException ex) { if(ex.RequestInformation == null || ex.RequestInformation.HttpStatusCode != 404) throw; } } return true; }
static void Main(string[] args) { var goldGuy = new BitcoinSecret("KyuzoVnpsqW529yzozkzP629wUDBsPmm4QEkh9iKnvw3Dy5JJiNg"); var silverGuy = new BitcoinSecret("L4KvjpqDtdGEn7Lw6HdDQjbg74MwWRrFZMQTgJozeHAKJw5rQ2Kn"); var firstPerson = new BitcoinSecret("5Jnw9Td7PaG6PWBrU7ZCfxyVXsHSsNxdZ9sg5dnZstcr12DLVbJ"); var secondPerson = new BitcoinSecret("5Jn4zJkzS2BWNu7AMRTdSJ6mS7JYfJg27oXKAichaRBbp97ZKks"); var exchangeEntity = new BitcoinSecret("5KA7FeABKmMKerWmkJzYM9FdoqScZEMVcS9u6wvT3EhgF5ZUWv5"); var bitcoinProviderEntity = new BitcoinSecret("5Jcz2A17aAt4bcQP5GEn6itt72JsLwrksNRVKqazy7n284b1bKj"); var issuanceCoinsTransaction = new Transaction() { Outputs = { new TxOut("1.0", goldGuy.PubKey), new TxOut("1.0", silverGuy.PubKey), new TxOut("1.0", firstPerson.PubKey), new TxOut("1.0", secondPerson.PubKey), } }; IssuanceCoin[] issuanceCoins = issuanceCoinsTransaction .Outputs .Take(2) .Select((o, i) => new Coin(new OutPoint(issuanceCoinsTransaction.GetHash(), i), o)) .Select(c => new IssuanceCoin(c)) .ToArray(); var goldIssuanceCoin = issuanceCoins[0]; var silverIssuanceCoin = issuanceCoins[1]; var firstPersonInitialCoin = new Coin(new OutPoint(issuanceCoinsTransaction, 2), issuanceCoinsTransaction.Outputs[2]); var secondPersonInitialCoin = new Coin(new OutPoint(issuanceCoinsTransaction, 3), issuanceCoinsTransaction.Outputs[3]); var goldId = goldIssuanceCoin.AssetId; var silverId = silverIssuanceCoin.AssetId; var txRepo = new NoSqlTransactionRepository(); txRepo.Put(issuanceCoinsTransaction.GetHash(), issuanceCoinsTransaction); var ctxRepo = new NoSqlColoredTransactionRepository(txRepo); TransactionBuilder txBuilder = new TransactionBuilder(); // Issuing gold to first person // This happens in gold issuer client Transaction tx = txBuilder .AddKeys(goldGuy.PrivateKey) .AddCoins(goldIssuanceCoin) .IssueAsset(firstPerson.GetAddress(), new AssetMoney(goldId, 20)) .SetChange(goldGuy.GetAddress()) .BuildTransaction(true); txRepo.Put(tx.GetHash(), tx); var ctx = tx.GetColoredTransaction(ctxRepo); var coloredCoins = ColoredCoin.Find(tx, ctx).ToArray(); ColoredCoin firstPersonGoldCoin = coloredCoins[0]; // Issuing silver to second person // This happens in silver issuer client txBuilder = new TransactionBuilder(); tx = txBuilder .AddKeys(silverGuy.PrivateKey) .AddCoins(silverIssuanceCoin) .IssueAsset(secondPerson.GetAddress(), new AssetMoney(silverId, 30)) .SetChange(silverGuy.GetAddress()) .BuildTransaction(true); txRepo.Put(tx.GetHash(), tx); ctx = tx.GetColoredTransaction(ctxRepo); coloredCoins = ColoredCoin.Find(tx, ctx).ToArray(); ColoredCoin secondPersonSilverCoin = coloredCoins[0]; // Sending first person gold to exchange // This happens in first user client var bitcoinProviderCoin = CreateTransactionFeeCoin(bitcoinProviderEntity.PubKey, txRepo); txBuilder = new TransactionBuilder(); tx = txBuilder .AddCoins(bitcoinProviderCoin) .AddKeys(bitcoinProviderEntity.PrivateKey) .AddCoins(firstPersonGoldCoin) .AddKeys(firstPerson.PrivateKey) .SendAssetToExchange(exchangeEntity.GetAddress(), new AssetMoney(goldId, 5)) .SetChange(firstPerson.PubKey) .BuildTransaction(true); txRepo.Put(tx.GetHash(), tx); ctx = tx.GetColoredTransaction(ctxRepo); coloredCoins = ColoredCoin.Find(tx, ctx).ToArray(); ColoredCoin firstPersonColoredCoinInExchange = coloredCoins[1]; // Creating the time-locked transaction which the first user can post to the // network to claim his/her coin from exchange (it works if the exchange does not touch the coins // This happens in exchange and the transaction is delivered to first user client bitcoinProviderCoin = CreateTransactionFeeCoin(bitcoinProviderEntity.PubKey, txRepo); txBuilder = new TransactionBuilder(); tx = txBuilder .AddCoins(bitcoinProviderCoin) .AddKeys(bitcoinProviderEntity.PrivateKey) .AddCoins(firstPersonColoredCoinInExchange) .AddKeys(firstPerson.PrivateKey) .SendAsset(firstPerson.PubKey, new AssetMoney(firstPersonColoredCoinInExchange.Amount.Id, firstPersonColoredCoinInExchange.Amount.Quantity)) .SetChange(exchangeEntity.PubKey) .SetLockTime(new LockTime(1000000)) .BuildTransaction(true); string reclaimTransactionForFirstUser = tx.ToHex(); // Create first person exchange request // This happens in first person client JObject firstPersonRequestToExchange = CreateExchangeRequest("ExactMatch", goldId.ToString(), silverId.ToString(), 5, 2); var firstRequestSignature = firstPerson.PrivateKey.SignMessage(firstPersonRequestToExchange.ToString(Formatting.None)); // Sending second person silver to exchange // This happens in second person client bitcoinProviderCoin = CreateTransactionFeeCoin(bitcoinProviderEntity.PubKey, txRepo); txBuilder = new TransactionBuilder(); tx = txBuilder .AddCoins(bitcoinProviderCoin) .AddKeys(bitcoinProviderEntity.PrivateKey) .AddCoins(secondPersonSilverCoin) .AddKeys(secondPerson.PrivateKey) .SendAssetToExchange(exchangeEntity.GetAddress(), new AssetMoney(silverId, 12)) .SetChange(secondPerson.PubKey) .BuildTransaction(true); txRepo.Put(tx.GetHash(), tx); ctx = tx.GetColoredTransaction(ctxRepo); coloredCoins = ColoredCoin.Find(tx, ctx).ToArray(); ColoredCoin secondPersonColoredCoinInExchange = coloredCoins[1]; // Create second person exchange request // This happens in second person client JObject secondPersonRequestToExchange = CreateExchangeRequest("ExactMatch", silverId.ToString(), goldId.ToString(), 30, 0.5f); var secondRequestSignature = secondPerson.PrivateKey.SignMessage(secondPersonRequestToExchange.ToString(Formatting.None)); // Creating exchange reason // This happens in exchange var exchangeReason = CreateExchangeMatch(firstPersonRequestToExchange, firstRequestSignature, secondPersonRequestToExchange, secondRequestSignature, exchangeEntity.PrivateKey); // Performing the exchange operation // This happens in exchange bitcoinProviderCoin = CreateTransactionFeeCoin(bitcoinProviderEntity.PubKey, txRepo); txBuilder = new TransactionBuilder(); tx = txBuilder .AddCoins(bitcoinProviderCoin) .AddKeys(bitcoinProviderEntity.PrivateKey) .AddCoins(firstPersonColoredCoinInExchange) .AddKeys(exchangeEntity.PrivateKey) .AddCoins(secondPersonColoredCoinInExchange) .AddKeys(exchangeEntity.PrivateKey) .PerformExchangeOperation(firstPerson.GetAddress(), new AssetMoney(silverId, 10), secondPerson.GetAddress(), new AssetMoney(goldId, 5), exchangeReason.ToString(Formatting.None)) .SetChange(exchangeEntity.GetAddress()) .BuildTransaction(true); txRepo.Put(tx.GetHash(), tx); ctx = tx.GetColoredTransaction(ctxRepo); coloredCoins = ColoredCoin.Find(tx, ctx).ToArray(); txRepo.Put(tx.GetHash(), tx); }