//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);
}
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);
}
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);
}
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 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);
}