private BlockMsg convertEntityToBlockMsg(Block entity)
{
var txDac = new TransactionDac();
var inputDac = new InputDac();
var outputDac = new OutputDac();
var blockMsg = new BlockMsg();
var headerMsg = new BlockHeaderMsg();
headerMsg.Version = entity.Version;
headerMsg.Hash = entity.Hash;
headerMsg.Height = entity.Height;
headerMsg.PreviousBlockHash = entity.PreviousBlockHash;
headerMsg.Bits = entity.Bits;
headerMsg.Nonce = entity.Nonce;
headerMsg.Timestamp = entity.Timestamp;
var transactions = txDac.SelectByBlockHash(entity.Hash);
headerMsg.TotalTransaction = transactions == null ? 0: transactions.Count;
foreach (var tx in transactions)
{
var txMsg = new TransactionMsg();
txMsg.Version = tx.Version;
txMsg.Hash = tx.Hash;
txMsg.Timestamp = tx.Timestamp;
txMsg.Locktime = tx.LockTime;
var inputs = inputDac.SelectByTransactionHash(tx.Hash);
var outputs = outputDac.SelectByTransactionHash(tx.Hash);
foreach (var input in inputs)
{
txMsg.Inputs.Add(new InputMsg
{
OutputTransactionHash = input.OutputTransactionHash,
OutputIndex = input.OutputIndex,
Size = input.Size,
UnlockScript = input.UnlockScript
});
}
foreach (var output in outputs)
{
txMsg.Outputs.Add(new OutputMsg
{
Index = output.Index,
Amount = output.Amount,
Size = output.Size,
LockScript = output.LockScript
});
}
blockMsg.Transactions.Add(txMsg);
}
blockMsg.Header = headerMsg;
return(blockMsg);
}
//Check whether output has been spent or contained in another transaction, true = spent, false = unspent
private bool checkOutputSpent(string currentTxHash, string outputTxHash, int outputIndex)
{
var outputDac = new OutputDac();
var inputDac = new InputDac();
var txDac = new TransactionDac();
var blockDac = new BlockDac();
var outputEntity = outputDac.SelectByHashAndIndex(outputTxHash, outputIndex);
var inputEntity = inputDac.SelectByOutputHash(outputTxHash, outputIndex);
if (inputEntity != null && inputEntity.TransactionHash != currentTxHash)
{
var tx = txDac.SelectByHash(inputEntity.TransactionHash);
if (tx != null)
{
var blockEntity = blockDac.SelectByHash(tx.BlockHash);
if (blockEntity != null && blockEntity.IsVerified)
{
return(true);
}
}
}
return(false);
}
public void RefreshUtxoSet(string accountId)
{
var outputDac = new OutputDac();
var accountDac = new AccountDac();
var txDac = new TransactionDac();
var account = accountDac.SelectById(accountId);
if (account != null && UtxoSet.Instance != null)
{
var set = UtxoSet.Instance.GetUtxoSetByAccountId(accountId);
if (set != null)
{
set.Clear();
//load from database
var outputsInDB = outputDac.SelectUnspentByReceiverId(accountId);
foreach (var output in outputsInDB)
{
var msg = new UtxoMsg();
msg.AccountId = output.ReceiverId;
msg.TransactionHash = output.TransactionHash;
msg.OutputIndex = output.Index;
msg.Amount = output.Amount;
msg.IsConfirmed = true;
msg.IsWatchedOnly = account.WatchedOnly;
var txEntity = txDac.SelectByHash(output.TransactionHash);
msg.BlockHash = txEntity != null ? txEntity.BlockHash : null;
set.Add(msg);
}
//load from transaction pool
var outputsInTxPool = TransactionPool.Instance.GetTransactionOutputsByAccountId(accountId);
foreach (var txHash in outputsInTxPool.Keys)
{
foreach (var output in outputsInTxPool[txHash])
{
var msg = new UtxoMsg();
msg.AccountId = accountId;
msg.TransactionHash = txHash;
msg.OutputIndex = output.Index;
msg.Amount = output.Amount;
msg.IsConfirmed = false;
msg.IsWatchedOnly = account.WatchedOnly;
set.Add(msg);
}
}
}
}
}
public TransactionMsg CreateNewTransactionMsg(List <UtxoMsg> utxos, Dictionary <string, long> receiverIdAndValues)
{
var outputDac = new OutputDac();
var accountDac = new AccountDac();
var transaction = new TransactionMsg();
transaction.Timestamp = Time.EpochTime;
transaction.Locktime = 0;
foreach (var utxo in utxos)
{
var account = accountDac.SelectById(utxo.AccountId);
if (account == null || account.WatchedOnly)
{
//TODO: throw exception;
return(null);
}
var privateKey = account.PrivateKey;
var inputMsg = new InputMsg();
inputMsg.OutputTransactionHash = utxo.TransactionHash;
inputMsg.OutputIndex = utxo.OutputIndex;
inputMsg.UnlockScript = Script.BuildUnlockScript(utxo.TransactionHash, utxo.OutputIndex, Base16.Decode(privateKey), Base16.Decode(account.PublicKey));
inputMsg.Size = inputMsg.UnlockScript.Length;
transaction.Inputs.Add(inputMsg);
outputDac.UpdateSpentStatus(utxo.TransactionHash, utxo.OutputIndex);
}
int index = 0;
foreach (var key in receiverIdAndValues.Keys)
{
var value = receiverIdAndValues[key];
var outputMsg = new OutputMsg();
outputMsg.Index = index;
outputMsg.Amount = value;
outputMsg.LockScript = Script.BuildLockScipt(key);
outputMsg.Size = outputMsg.LockScript.Length;
transaction.Outputs.Add(outputMsg);
index++;
}
transaction.Hash = transaction.GetHash();
return(transaction);
}
public List <BlockMsg> GetBlockMsgByHeights(List <long> heights)
{
var blockDac = new BlockDac();
var txDac = new TransactionDac();
var inputDac = new InputDac();
var outputDac = new OutputDac();
var blocks = new List <BlockMsg>();
foreach (var height in heights)
{
var items = blockDac.SelectByHeight(height);
foreach (var entity in items)
{
blocks.Add(this.convertEntityToBlockMsg(entity));
}
}
return(blocks);
}
public TransactionMsg ConvertTxEntityToMsg(Transaction tx)
{
var inputDac = new InputDac();
var outputDac = new OutputDac();
var txMsg = new TransactionMsg();
txMsg.Version = tx.Version;
txMsg.Hash = tx.Hash;
txMsg.Timestamp = tx.Timestamp;
txMsg.Locktime = tx.LockTime;
var inputs = inputDac.SelectByTransactionHash(tx.Hash);
var outputs = outputDac.SelectByTransactionHash(tx.Hash);
foreach (var input in inputs)
{
txMsg.Inputs.Add(new InputMsg
{
OutputTransactionHash = input.OutputTransactionHash,
OutputIndex = input.OutputIndex,
Size = input.Size,
UnlockScript = input.UnlockScript
});
}
foreach (var output in outputs)
{
txMsg.Outputs.Add(new OutputMsg
{
Index = output.Index,
Amount = output.Amount,
Size = output.Size,
LockScript = output.LockScript
});
}
return(txMsg);
}
public Transaction GetTransactionEntityByHash(string hash)
{
var inputDac = new InputDac();
var outputDac = new OutputDac();
var item = new TransactionDac().SelectByHash(hash);
if (item != null)
{
item.Inputs = inputDac.SelectByTransactionHash(item.Hash);
item.Outputs = outputDac.SelectByTransactionHash(item.Hash);
}
else
{
var msg = TransactionPool.Instance.GetTransactionByHash(hash);
if (msg != null)
{
item = this.ConvertTxMsgToEntity(msg);
}
}
return(item);
}
//check whether output is existed. get amount and lockscript from output.
private bool getOutput(string transactionHash, int outputIndex, out long outputAmount, out string lockScript, out long blockHeight)
{
var outputDac = new OutputDac();
var outputEntity = outputDac.SelectByHashAndIndex(transactionHash, outputIndex);
if (outputEntity == null)
{
long height = -1;
var outputMsg = TransactionPool.Instance.GetOutputMsg(transactionHash, outputIndex);
if (outputMsg != null)
{
outputAmount = outputMsg.Amount;
lockScript = outputMsg.LockScript;
blockHeight = height;
return(true);
}
}
else
{
outputAmount = outputEntity.Amount;
lockScript = outputEntity.LockScript;
var tx = new TransactionDac().SelectByHash(outputEntity.TransactionHash);
if (tx != null)
{
var blockEntity = new BlockDac().SelectByHash(tx.BlockHash);
blockHeight = blockEntity.Height;
return(true);
}
}
outputAmount = 0;
lockScript = null;
blockHeight = -1;
return(false);
}
//public List<UtxoMsg> GetAllConfirmedOutputs()
//{
// return UtxoSet.Instance.GetAllUnspentOutputs();
//}
public List <UtxoMsg> GetAllConfirmedOutputs()
{
List <UtxoMsg> utxoMsgs = new List <UtxoMsg>();
var outputDac = new OutputDac();
var txDac = new TransactionDac();
var blockDac = new BlockDac();
var accountDac = new AccountDac();
var lastHeight = -1L;
var lastBlock = blockDac.SelectLast();
if (lastBlock != null)
{
lastHeight = lastBlock.Height;
}
var outputs = outputDac.SelectAllUnspentOutputs();
foreach (var output in outputs)
{
var msg = new UtxoMsg();
msg.AccountId = output.ReceiverId;
msg.TransactionHash = output.TransactionHash;
msg.OutputIndex = output.Index;
msg.Amount = output.Amount;
msg.IsConfirmed = true;
var account = accountDac.SelectById(msg.AccountId);
msg.IsWatchedOnly = account.WatchedOnly;
var txEntity = txDac.SelectByHash(output.TransactionHash);
msg.BlockHash = txEntity != null ? txEntity.BlockHash : null;
utxoMsgs.Add(msg);
}
return(utxoMsgs);
}
/// <summary>
/// 创建新的区块
/// </summary>
/// <param name="minerName"></param>
/// <param name="generatorId"></param>
/// <param name="accountId"></param>
/// <returns></returns>
public BlockMsg CreateNewBlock(string minerName, string generatorId, string remark = null, string accountId = null)
{
var accountDac = new AccountDac();
var blockDac = new BlockDac();
var outputDac = new OutputDac();
var txDac = new TransactionDac();
var txPool = TransactionPool.Instance;
var transactionMsgs = new List <TransactionMsg>();
long lastBlockHeight = -1;
string lastBlockHash = Base16.Encode(HashHelper.EmptyHash());
long lastBlockBits = -1;
string lastBlockGenerator = null;
//获取最后一个区块
var blockEntity = blockDac.SelectLast();
if (blockEntity != null)
{
lastBlockHeight = blockEntity.Height;
lastBlockHash = blockEntity.Hash;
lastBlockBits = blockEntity.Bits;
lastBlockGenerator = blockEntity.GeneratorId;
}
long totalSize = 0;
long maxSize = BlockSetting.MAX_BLOCK_SIZE - (1 * 1024);
var poolItemList = txPool.MainPool.OrderByDescending(t => t.FeeRate).ToList();
var index = 0;
while (totalSize < maxSize && index < poolItemList.Count)
{
var tx = poolItemList[index].Transaction;
if (tx != null && transactionMsgs.Where(t => t.Hash == tx.Hash).Count() == 0)
{
if (txDac.SelectByHash(tx.Hash) == null)
{
transactionMsgs.Add(tx);
totalSize += tx.Size;
}
else
{
txPool.RemoveTransaction(tx.Hash);
}
}
else
{
break;
}
index++;
}
var minerAccount = accountDac.SelectDefaultAccount();
if (accountId != null)
{
var account = accountDac.SelectById(accountId);
if (account != null && !string.IsNullOrWhiteSpace(account.PrivateKey))
{
minerAccount = account;
}
}
var minerAccountId = minerAccount.Id;
BlockMsg newBlockMsg = new BlockMsg();
BlockHeaderMsg headerMsg = new BlockHeaderMsg();
headerMsg.Hash = Base16.Encode(HashHelper.EmptyHash());
headerMsg.GeneratorId = generatorId;
newBlockMsg.Header = headerMsg;
headerMsg.Height = lastBlockHeight + 1;
headerMsg.PreviousBlockHash = lastBlockHash;
if (headerMsg.Height == 0)
{
minerAccountId = BlockSetting.GenesisBlockReceiver;
remark = BlockSetting.GenesisBlockRemark;
}
long totalAmount = 0;
long totalFee = 0;
foreach (var tx in transactionMsgs)
{
long totalInputsAmount = 0L;
long totalOutputAmount = 0L;
foreach (var input in tx.Inputs)
{
var utxo = outputDac.SelectByHashAndIndex(input.OutputTransactionHash, input.OutputIndex);
if (utxo != null)
{
totalInputsAmount += utxo.Amount;
}
}
foreach (var output in tx.Outputs)
{
totalOutputAmount += output.Amount;
}
totalAmount += totalOutputAmount;
totalFee += (totalInputsAmount - totalOutputAmount);
}
//var work = new POW(headerMsg.Height);
BlockMsg prevBlockMsg = null;
BlockMsg prevStepBlockMsg = null;
if (blockEntity != null)
{
prevBlockMsg = this.convertEntityToBlockMsg(blockEntity);
}
if (headerMsg.Height >= POC.DIFFIUCLTY_ADJUST_STEP)
{
prevStepBlockMsg = this.GetBlockMsgByHeight(headerMsg.Height - POC.DIFFIUCLTY_ADJUST_STEP - 1);
}
var newBlockReward = POC.GetNewBlockReward(headerMsg.Height);
headerMsg.Bits = POC.CalculateBaseTarget(headerMsg.Height, prevBlockMsg, prevStepBlockMsg);
headerMsg.TotalTransaction = transactionMsgs.Count + 1;
var coinbaseTxMsg = new TransactionMsg();
coinbaseTxMsg.Timestamp = Time.EpochTime;
coinbaseTxMsg.Locktime = 0;
var coinbaseInputMsg = new InputMsg();
coinbaseTxMsg.Inputs.Add(coinbaseInputMsg);
coinbaseInputMsg.OutputIndex = 0;
coinbaseInputMsg.OutputTransactionHash = Base16.Encode(HashHelper.EmptyHash());
coinbaseInputMsg.UnlockScript = Script.BuildMinerScript(minerName, remark);
coinbaseInputMsg.Size = coinbaseInputMsg.UnlockScript.Length;
var coinbaseOutputMsg = new OutputMsg();
coinbaseTxMsg.Outputs.Add(coinbaseOutputMsg);
coinbaseOutputMsg.Amount = newBlockReward + totalFee;
coinbaseOutputMsg.LockScript = Script.BuildLockScipt(minerAccountId);
coinbaseOutputMsg.Size = coinbaseOutputMsg.LockScript.Length;
coinbaseOutputMsg.Index = 0;
coinbaseTxMsg.Hash = coinbaseTxMsg.GetHash();
newBlockMsg.Transactions.Insert(0, coinbaseTxMsg);
foreach (var tx in transactionMsgs)
{
newBlockMsg.Transactions.Add(tx);
}
headerMsg.PayloadHash = newBlockMsg.GetPayloadHash();
var dsa = ECDsa.ImportPrivateKey(Base16.Decode(minerAccount.PrivateKey));
var signResult = dsa.SingnData(Base16.Decode(headerMsg.PayloadHash));
headerMsg.BlockSignature = Base16.Encode(signResult);
headerMsg.BlockSigSize = headerMsg.BlockSignature.Length;
headerMsg.TotalTransaction = newBlockMsg.Transactions.Count;
return(newBlockMsg);
}
public void SaveBlockIntoDB(BlockMsg msg)
{
try
{
VerifyBlock(msg);
Block block = this.convertBlockMsgToEntity(msg);
block.IsDiscarded = false;
block.IsVerified = false;
var blockDac = new BlockDac();
var transactionDac = new TransactionDac();
var inputDac = new InputDac();
var outputDac = new OutputDac();
//foreach (var tx in block.Transactions)
//{
// foreach (var input in tx.Inputs)
// {
// if (input.OutputTransactionHash != Base16.Encode(HashHelper.EmptyHash()))
// {
// var output = outputDac.SelectByHashAndIndex(input.OutputTransactionHash, input.OutputIndex);
// if (output != null)
// {
// input.AccountId = output.ReceiverId;
// outputDac.UpdateSpentStatus(input.OutputTransactionHash, input.OutputIndex);
// }
// }
// }
//}
blockDac.Save(block);
//update nextblock hash
//blockDac.UpdateNextBlockHash(block.PreviousBlockHash, block.Hash);
//remove transactions in tx pool
foreach (var tx in block.Transactions)
{
TransactionPool.Instance.RemoveTransaction(tx.Hash);
//save into utxo set
foreach (var output in tx.Outputs)
{
var accountId = AccountIdHelper.CreateAccountAddressByPublicKeyHash(
Base16.Decode(
Script.GetPublicKeyHashFromLockScript(output.LockScript)
)
);
UtxoSet.Instance.AddUtxoRecord(new UtxoMsg
{
AccountId = accountId,
BlockHash = block.Hash,
TransactionHash = tx.Hash,
OutputIndex = output.Index,
Amount = output.Amount,
IsConfirmed = true
});
}
}
}
catch (Exception ex)
{
LogHelper.Error(ex.Message, ex);
throw ex;
}
}
public void GetBalanceInDB(out long confirmedBalance, out long unconfirmedBalance)
{
//return new OutputDac().SumSelfUnspentOutputs();
confirmedBalance = 0;
unconfirmedBalance = 0;
var outputDac = new OutputDac();
var txDac = new TransactionDac();
var blockDac = new BlockDac();
var lastHeight = -1L;
var lastBlock = blockDac.SelectLast();
if (lastBlock != null)
{
lastHeight = lastBlock.Height;
}
var outputs = outputDac.SelectAllUnspentOutputs();
foreach (var output in outputs)
{
var tx = txDac.SelectByHash(output.TransactionHash);
if (tx != null)
{
var block = blockDac.SelectByHash(tx.BlockHash);
if (block != null)
{
if (tx.TotalInput == 0)
{
//coinbase
if (lastHeight - block.Height >= 100)
{
confirmedBalance += output.Amount;
}
else
{
unconfirmedBalance += output.Amount;
}
}
else
{
if (block.IsVerified)
{
if (Time.EpochTime >= tx.LockTime)
{
confirmedBalance += output.Amount;
}
else
{
unconfirmedBalance += output.Amount;
}
}
else
{
unconfirmedBalance += output.Amount;
}
}
}
}
}
}
public Transaction ConvertTxMsgToEntity(TransactionMsg txMsg)
{
var outputDac = new OutputDac();
var entity = new Transaction();
entity.Hash = txMsg.Hash;
entity.BlockHash = null;
entity.Version = txMsg.Version;
entity.Timestamp = txMsg.Timestamp;
entity.LockTime = txMsg.Locktime;
entity.Inputs = new List <Input>();
entity.Outputs = new List <Output>();
long totalInput = 0L;
long totalOutput = 0L;
foreach (var inputMsg in txMsg.Inputs)
{
var input = new Input();
input.TransactionHash = txMsg.Hash;
input.OutputTransactionHash = inputMsg.OutputTransactionHash;
input.OutputIndex = inputMsg.OutputIndex;
input.Size = inputMsg.Size;
input.UnlockScript = inputMsg.UnlockScript;
var output = outputDac.SelectByHashAndIndex(inputMsg.OutputTransactionHash, inputMsg.OutputIndex);
if (output != null)
{
input.Amount = output.Amount;
input.AccountId = output.ReceiverId;
}
entity.Inputs.Add(input);
totalInput += input.Amount;
}
foreach (var outputMsg in txMsg.Outputs)
{
var output = new Output();
output.Index = outputMsg.Index;
output.TransactionHash = entity.Hash;
var address = AccountIdHelper.CreateAccountAddressByPublicKeyHash(
Base16.Decode(
Script.GetPublicKeyHashFromLockScript(outputMsg.LockScript)
));
output.ReceiverId = address;
output.Amount = outputMsg.Amount;
output.Size = outputMsg.Size;
output.LockScript = outputMsg.LockScript;
entity.Outputs.Add(output);
totalOutput += output.Amount;
}
entity.TotalInput = totalInput;
entity.TotalOutput = totalOutput;
entity.Fee = totalInput - totalOutput;
entity.Size = txMsg.Size;
if (txMsg.Inputs.Count == 1 &&
txMsg.Outputs.Count == 1 &&
txMsg.Inputs[0].OutputTransactionHash == Base16.Encode(HashHelper.EmptyHash()))
{
entity.Fee = 0;
}
return(entity);
}
public List <Transaction> SearchTransactionEntities(string account, int count, int skip = 0, bool includeWatchOnly = true)
{
var inputDac = new InputDac();
var outputDac = new OutputDac();
var items = new TransactionDac().SelectTransactions(account, count, skip, includeWatchOnly);
var accounts = new AccountDac().SelectAll();
foreach (var item in items)
{
item.Inputs = inputDac.SelectByTransactionHash(item.Hash);
item.Outputs = outputDac.SelectByTransactionHash(item.Hash);
}
if (skip == 0)
{
var txList = TransactionPool.Instance.GetAllTransactions();
bool containsUnconfirmedTx = false;
foreach (var tx in txList)
{
var entity = this.ConvertTxMsgToEntity(tx);
bool isSendTransaction = false;
if (entity != null)
{
foreach (var input in entity.Inputs)
{
if (accounts.Where(a => a.Id == input.AccountId).Count() > 0)
{
items.Add(entity);
isSendTransaction = true;
containsUnconfirmedTx = true;
break;
}
}
if (!isSendTransaction)
{
foreach (var output in entity.Outputs)
{
if (accounts.Where(a => a.Id == output.ReceiverId).Count() > 0)
{
items.Add(entity);
containsUnconfirmedTx = true;
break;
}
}
}
}
}
if (containsUnconfirmedTx)
{
items = items.OrderByDescending(t => t.Timestamp).ToList();
}
}
//var result = new List<TransactionMsg>();
//foreach(var item in items)
//{
// result.Add(convertTxEntityToMsg(item));
//}
//return result;
return(items);
}
public TransactionMsg CreateNewTransactionMsg(string senderAccountId, Dictionary <string, long> receiverIdAndValues, long fee)
{
var outputDac = new OutputDac();
var accountDac = new AccountDac();
var account = accountDac.SelectById(senderAccountId);
if (account == null || account.WatchedOnly)
{
//TODO: throw exception;
return(null);
}
var balance = UtxoSet.Instance.GetAccountBlanace(senderAccountId, true);
long totalOutput = fee;
long totalInput = 0;
foreach (var key in receiverIdAndValues.Keys)
{
totalOutput += receiverIdAndValues[key];
}
if (totalOutput > balance)
{
//TODO: throw exception
return(null);
}
var transaction = new TransactionMsg();
transaction.Timestamp = Time.EpochTime;
transaction.Locktime = 0;
var outputs = outputDac.SelectUnspentByReceiverId(senderAccountId);
foreach (var output in outputs)
{
var inputMsg = new InputMsg();
inputMsg.OutputTransactionHash = output.TransactionHash;
inputMsg.OutputIndex = output.Index;
inputMsg.UnlockScript = Script.BuildUnlockScript(output.TransactionHash, output.Index, Base16.Decode(account.PrivateKey), Base16.Decode(account.PublicKey));
inputMsg.Size = inputMsg.UnlockScript.Length;
transaction.Inputs.Add(inputMsg);
outputDac.UpdateSpentStatus(output.TransactionHash, output.Index);
totalInput += output.Amount;
if (totalInput >= totalOutput)
{
break;
}
}
int index = 0;
foreach (var key in receiverIdAndValues.Keys)
{
var value = receiverIdAndValues[key];
var outputMsg = new OutputMsg();
outputMsg.Index = index;
outputMsg.Amount = value;
outputMsg.LockScript = Script.BuildLockScipt(key);
outputMsg.Size = outputMsg.LockScript.Length;
transaction.Outputs.Add(outputMsg);
index++;
}
if (totalInput > totalOutput)
{
var value = totalInput - totalOutput;
var outputMsg = new OutputMsg();
outputMsg.Index = index;
outputMsg.Amount = value;
outputMsg.LockScript = Script.BuildLockScipt(senderAccountId);
outputMsg.Size = outputMsg.LockScript.Length;
transaction.Outputs.Add(outputMsg);
index++;
}
transaction.Hash = transaction.GetHash();
return(transaction);
}
public void AddTransactionToPool(TransactionMsg transaction)
{
var accountDac = new AccountDac();
var outputDac = new OutputDac();
long feeRate = 0;
long totalInput = 0;
long totalOutput = 0;
foreach (var input in transaction.Inputs)
{
long amount;
string lockCript;
long blockHeight;
if (this.getOutput(input.OutputTransactionHash, input.OutputIndex, out amount, out lockCript, out blockHeight))
{
totalInput += amount;
}
}
foreach (var output in transaction.Outputs)
{
totalOutput += output.Amount;
}
feeRate = (totalInput - totalOutput) / transaction.Size;
try
{
long fee = 0;
var result = this.VerifyTransaction(transaction, out fee);
if (result)
{
TransactionPool.Instance.AddNewTransaction(feeRate, transaction);
//recheck isolate transactions
var txList = TransactionPool.Instance.GetIsolateTransactions();
foreach (var tx in txList)
{
try
{
if (this.VerifyTransaction(tx, out fee))
{
TransactionPool.Instance.MoveIsolateTransactionToMainPool(tx.Hash);
}
}
catch
{
}
}
}
else
{
TransactionPool.Instance.AddIsolateTransaction(feeRate, transaction);
}
foreach (var input in transaction.Inputs)
{
outputDac.UpdateSpentStatus(input.OutputTransactionHash, input.OutputIndex);
UtxoSet.Instance.RemoveUtxoRecord(input.OutputTransactionHash, input.OutputIndex);
}
foreach (var output in transaction.Outputs)
{
var accountId = AccountIdHelper.CreateAccountAddressByPublicKeyHash(
Base16.Decode(
Script.GetPublicKeyHashFromLockScript(output.LockScript)
)
);
UtxoSet.Instance.AddUtxoRecord(new UtxoMsg
{
AccountId = accountId,
BlockHash = null,
TransactionHash = transaction.Hash,
OutputIndex = output.Index,
Amount = output.Amount,
IsConfirmed = false
});
}
}
catch (CommonException ex)
{
throw ex;
}
}
private Block convertBlockMsgToEntity(BlockMsg blockMsg)
{
OutputDac outputDac = new OutputDac();
var block = new Block();
block.Hash = blockMsg.Header.Hash;
block.Version = blockMsg.Header.Version;
block.Height = blockMsg.Header.Height;
block.PreviousBlockHash = blockMsg.Header.PreviousBlockHash;
block.Bits = blockMsg.Header.Bits;
block.Nonce = blockMsg.Header.Nonce;
block.GeneratorId = blockMsg.Header.GeneratorId;
block.Timestamp = blockMsg.Header.Timestamp;
block.TotalAmount = 0;
block.TotalFee = 0;
block.Transactions = new List <Transaction>();
foreach (var txMsg in blockMsg.Transactions)
{
var transaction = new Transaction();
transaction.Hash = txMsg.Hash;
transaction.BlockHash = block.Hash;
transaction.Version = txMsg.Version;
transaction.Timestamp = txMsg.Timestamp;
transaction.LockTime = txMsg.Locktime;
transaction.Inputs = new List <Input>();
transaction.Outputs = new List <Output>();
long totalInput = 0L;
long totalOutput = 0L;
foreach (var inputMsg in txMsg.Inputs)
{
var input = new Input();
input.TransactionHash = txMsg.Hash;
input.OutputTransactionHash = inputMsg.OutputTransactionHash;
input.OutputIndex = inputMsg.OutputIndex;
input.Size = inputMsg.Size;
input.UnlockScript = inputMsg.UnlockScript;
var output = outputDac.SelectByHashAndIndex(inputMsg.OutputTransactionHash, inputMsg.OutputIndex);
if (output != null)
{
input.Amount = output.Amount;
input.AccountId = output.ReceiverId;
}
transaction.Inputs.Add(input);
totalInput += input.Amount;
}
foreach (var outputMsg in txMsg.Outputs)
{
var output = new Output();
output.Index = outputMsg.Index;
output.TransactionHash = transaction.Hash;
var address = AccountIdHelper.CreateAccountAddressByPublicKeyHash(
Base16.Decode(
Script.GetPublicKeyHashFromLockScript(outputMsg.LockScript)
));
output.ReceiverId = address;
output.Amount = outputMsg.Amount;
output.Size = outputMsg.Size;
output.LockScript = outputMsg.LockScript;
transaction.Outputs.Add(output);
totalOutput += output.Amount;
}
transaction.TotalInput = totalInput;
transaction.TotalOutput = totalOutput;
transaction.Fee = totalInput - totalOutput;
transaction.Size = txMsg.Size;
if (txMsg.Inputs.Count == 1 &&
txMsg.Outputs.Count == 1 &&
txMsg.Inputs[0].OutputTransactionHash == Base16.Encode(HashHelper.EmptyHash()))
{
transaction.Fee = 0;
}
block.Transactions.Add(transaction);
block.TotalAmount += transaction.TotalOutput;
block.TotalFee += transaction.Fee;
}
//block.GenerationSignature = blockMsg.Header.GenerationSignature;
block.BlockSignature = blockMsg.Header.BlockSignature;
//block.CumulativeDifficulty = blockMsg.Header.CumulativeDifficulty;
block.PayloadHash = blockMsg.Header.PayloadHash;
block.IsVerified = false;
return(block);
}
public BlockMsg CreateNewBlock(string minerName, string accountId = null)
{
var accountDac = new AccountDac();
var blockDac = new BlockDac();
var outputDac = new OutputDac();
var txDac = new TransactionDac();
var txPool = TransactionPool.Instance;
var transactionMsgs = new List <TransactionMsg>();
long lastBlockHeight = -1;
string lastBlockHash = Base16.Encode(HashHelper.EmptyHash());
long lastBlockBits = -1;
var blockEntity = blockDac.SelectLast();
if (blockEntity != null)
{
lastBlockHeight = blockEntity.Height;
lastBlockHash = blockEntity.Hash;
lastBlockBits = blockEntity.Bits;
}
long totalSize = 0;
long maxSize = BlockSetting.MAX_BLOCK_SIZE - (500 * 1024);
var poolItemList = txPool.MainPool.OrderByDescending(t => t.FeeRate).ToList();
var index = 0;
while (totalSize < maxSize && index < poolItemList.Count)
{
var tx = poolItemList[index].Transaction;
if (tx != null && transactionMsgs.Where(t => t.Hash == tx.Hash).Count() == 0)
{
if (txDac.SelectByHash(tx.Hash) == null)
{
transactionMsgs.Add(tx);
totalSize += tx.Size;
}
else
{
txPool.RemoveTransaction(tx.Hash);
}
}
else
{
break;
}
index++;
}
var minerAccount = accountDac.SelectDefaultAccount();
if (accountId != null)
{
var account = accountDac.SelectById(accountId);
if (account != null && !string.IsNullOrWhiteSpace(account.PrivateKey))
{
minerAccount = account;
}
}
BlockMsg newBlockMsg = new BlockMsg();
BlockHeaderMsg headerMsg = new BlockHeaderMsg();
newBlockMsg.Header = headerMsg;
headerMsg.Height = lastBlockHeight + 1;
headerMsg.PreviousBlockHash = lastBlockHash;
long totalAmount = 0;
long totalFee = 0;
foreach (var tx in transactionMsgs)
{
long totalInputsAmount = 0L;
long totalOutputAmount = 0L;
foreach (var input in tx.Inputs)
{
var utxo = outputDac.SelectByHashAndIndex(input.OutputTransactionHash, input.OutputIndex);
if (utxo != null)
{
totalInputsAmount += utxo.Amount;
}
}
foreach (var output in tx.Outputs)
{
totalOutputAmount += output.Amount;
}
totalAmount += totalOutputAmount;
totalFee += (totalInputsAmount - totalOutputAmount);
}
var work = new POW(headerMsg.Height);
BlockMsg previous4032Block = null;
if (headerMsg.Height > POW.DiffiucltyAdjustStep)
{
previous4032Block = this.GetBlockMsgByHeight(headerMsg.Height - POW.DiffiucltyAdjustStep);
}
var newBlockReward = work.GetNewBlockReward();
headerMsg.Bits = work.CalculateNextWorkTarget(lastBlockHeight, lastBlockBits, previous4032Block);
headerMsg.TotalTransaction = transactionMsgs.Count + 1;
var coinbaseTxMsg = new TransactionMsg();
coinbaseTxMsg.Timestamp = Time.EpochTime;
coinbaseTxMsg.Locktime = 0;
var coinbaseInputMsg = new InputMsg();
coinbaseTxMsg.Inputs.Add(coinbaseInputMsg);
coinbaseInputMsg.OutputIndex = 0;
coinbaseInputMsg.OutputTransactionHash = Base16.Encode(HashHelper.EmptyHash());
coinbaseInputMsg.UnlockScript = Script.BuildMinerScript(minerName);
coinbaseInputMsg.Size = coinbaseInputMsg.UnlockScript.Length;
var coinbaseOutputMsg = new OutputMsg();
coinbaseTxMsg.Outputs.Add(coinbaseOutputMsg);
coinbaseOutputMsg.Amount = newBlockReward + totalFee;
coinbaseOutputMsg.LockScript = Script.BuildLockScipt(minerAccount.Id);
coinbaseOutputMsg.Size = coinbaseOutputMsg.LockScript.Length;
coinbaseOutputMsg.Index = 0;
coinbaseTxMsg.Hash = coinbaseTxMsg.GetHash();
newBlockMsg.Transactions.Insert(0, coinbaseTxMsg);
foreach (var tx in transactionMsgs)
{
newBlockMsg.Transactions.Add(tx);
}
return(newBlockMsg);
}