/// <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 = AccountDac.Default;
var blockDac = BlockDac.Default;
var txDac = TransactionDac.Default;
var txPool = TransactionPool.Instance;
var txComponent = new TransactionComponent();
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.Header.Height;
lastBlockHash = blockEntity.Header.Hash;
lastBlockBits = blockEntity.Header.Bits;
lastBlockGenerator = blockEntity.Header.GeneratorId;
}
long totalSize = 0;
long totalInput = 0;
long totalOutput = 0;
long totalAmount = 0;
long totalFee = 0;
long maxSize = Consensus.BlockSetting.MAX_BLOCK_SIZE - (1 * 1024);
//获取待打包的交易
var txs = txPool.GetTxsWithoutRepeatCost(10, maxSize);
var hashIndexs = new List <string>();
foreach (var tx in txs)
{
totalSize += tx.Size;
totalInput += tx.InputCount;
totalOutput += tx.OutputCount;
hashIndexs.AddRange(tx.Inputs.Select(x => $"{x.OutputTransactionHash}_{x.OutputIndex}"));
long totalOutputAmount = tx.Outputs.Sum(x => x.Amount);
totalAmount += totalOutputAmount;
}
var utxos = UtxoSetDac.Default.Get(hashIndexs);
var totalInputAmount = utxos.Sum(x => x.Amount);
totalFee = totalInputAmount - totalAmount;
transactionMsgs.AddRange(txs);
var accounts = AccountDac.Default.SelectAll();
var minerAccount = accounts.OrderBy(x => x.Timestamp).FirstOrDefault();
if (accountId != null)
{
var account = accounts.FirstOrDefault(x => x.Id == 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 = Consensus.BlockSetting.GenesisBlockReceiver;
remark = Consensus.BlockSetting.GenesisBlockRemark;
}
BlockMsg prevBlockMsg = null;
BlockMsg prevStepBlockMsg = null;
if (blockEntity != null)
{
prevBlockMsg = blockEntity;
}
if (headerMsg.Height >= POC.DIFFIUCLTY_ADJUST_STEP)
{
var prevStepHeight = 0L;
if (!GlobalParameters.IsTestnet && headerMsg.Height <= POC.DIFFICULTY_CALCULATE_LOGIC_ADJUST_HEIGHT)
{
prevStepHeight = headerMsg.Height - POC.DIFFIUCLTY_ADJUST_STEP - 1;
}
else
{
prevStepHeight = headerMsg.Height - POC.DIFFIUCLTY_ADJUST_STEP;
}
prevStepBlockMsg = blockDac.SelectByHeight(prevStepHeight);
}
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;
if (newBlockReward < 0 || totalFee < 0 || coinbaseOutputMsg.Amount < 0)
{
LogHelper.Warn($"newBlockReward:{newBlockReward}");
LogHelper.Warn($"totalFee:{totalFee}");
LogHelper.Warn($"coinbaseOutputMsg.Amount:{coinbaseOutputMsg.Amount}");
throw new CommonException(ErrorCode.Engine.Transaction.Verify.COINBASE_OUTPUT_AMOUNT_ERROR);
}
coinbaseTxMsg.Hash = coinbaseTxMsg.GetHash();
newBlockMsg.Transactions.Insert(0, coinbaseTxMsg);
foreach (var tx in transactionMsgs)
{
newBlockMsg.Transactions.Add(tx);
}
headerMsg.PayloadHash = newBlockMsg.GetPayloadHash();
LogHelper.Warn($"{headerMsg.Height}::{headerMsg.PayloadHash}");
LogHelper.Warn($"PayloadHash::{headerMsg.PayloadHash}");
LogHelper.Warn($"BlockSignature::{headerMsg.BlockSignature}");
LogHelper.Warn($"miner::{minerName}");
headerMsg.BlockSignature = Base16.Encode(HashHelper.EmptyHash());
headerMsg.BlockSigSize = headerMsg.BlockSignature.Length;
headerMsg.TotalTransaction = newBlockMsg.Transactions.Count;
return(newBlockMsg);
}
public static void ForgeBlock(ForgeMsg msg)
{
try
{
LogHelper.Info("Forge Block 3");
LogHelper.Info($"msg == null : {msg == null} ; PoolCenterJob.Current == null : {PoolCenterJob.Current == null}");
var startMsg = PoolCenterJob.Current.CurrentStartMiningMsg;
if (msg != null && PoolCenterJob.Current != null && startMsg != null)
{
LogHelper.Info($"{startMsg.Id},{msg.StartMsgId}");
}
if (msg == null || PoolCenterJob.Current == null || startMsg == null || startMsg.Id != msg.StartMsgId)
{
return;
}
LogHelper.Info("Forge Block 4");
var blockMsg = RedisManager.Current.GetDataInRedis <BlockMsg>(msg.StartMsgId);
if (blockMsg == null || blockMsg.Header.Height < startMsg.BlockHeight)
{
return;
}
LogHelper.Info("Forge Block 5");
if (!(blockMsg.Header.Height > NodeApi.Current.GetBlockHeight()))
{
return;
}
LogHelper.Info("Forge Block 6");
LogHelper.Info("Received Msg [ForgeBlock]");
BlockMsg successBlock = null;
if (PoolCenterJob.Current.ForgeBlock(msg.StartMsgId, msg.Account, msg.Nonce, out successBlock))
{
CenterCache.GenarateBlockCount++;
PoolCenterJob.Current.StopMining(true, msg.StartMsgId);
//分析存币交易
ProcessDepositTx(successBlock);
Task.Delay(Setting.MaxMiningBlockCount).Wait();
PoolCenterJob.Current.Start();
Task.Run(() =>
{
if (PoolCenterJob.Current.RemoveStartMsgIds.ContainsKey(msg.StartMsgId))
{
PoolCenterJob.Current.RemoveStartMsgIds[msg.StartMsgId] = Time.EpochTime;
}
Task.Delay(Setting.SAVE_REWARDS_BEHIND_GENERATETIME_BLOCK).Wait();
var height = Convert.ToInt32(blockMsg.Header.Height);
PoolApi.SaveRewards(msg.StartMsgId, msg.Nonce, height);
});
}
}
catch (Exception ex)
{
LogHelper.Error(ex.ToString());
}
}
public bool VerifyBlockBasic(BlockMsg newBlock)
{
if (newBlock.Header.Hash != newBlock.Header.GetHash())
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_HASH_ERROR);
}
bool hasPreviousBlock = false;
long previousBlockTimestamp = -1;
long previousBlockBits = -1;
long previousBlockHeight = newBlock.Header.Height - 1;
var cacheBlockKey = $"{newBlock.Header.Hash}_{newBlock.Header.Height - 1}";
var previousBlockMsg = BlockDac.Default.SelectByHash(newBlock.Header.PreviousBlockHash);
if (previousBlockMsg != null)
{
hasPreviousBlock = true;
previousBlockTimestamp = previousBlockMsg.Header.Timestamp;
previousBlockBits = previousBlockMsg.Header.Bits;
}
else
{
var previousBlock = BlockDac.Default.SelectByHash(newBlock.Header.PreviousBlockHash);
hasPreviousBlock = previousBlock != null;
if (hasPreviousBlock)
{
previousBlockTimestamp = previousBlock.Header.Timestamp;
previousBlockBits = previousBlock.Header.Bits;
}
}
if (newBlock.Header.Height > 0 && !hasPreviousBlock)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.PREV_BLOCK_NOT_EXISTED);
}
if ((newBlock.Header.Timestamp - Time.EpochTime) > 2 * 60 * 60 * 1000 ||
(hasPreviousBlock && newBlock.Header.Timestamp <= previousBlockTimestamp))
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_TIME_IS_ERROR);
}
if (newBlock.Serialize().Length > Consensus.BlockSetting.MAX_BLOCK_SIZE)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_SIZE_LARGE_THAN_LIMIT);
}
BlockMsg prevStepBlock = null;
if (newBlock.Header.Height >= POC.DIFFIUCLTY_ADJUST_STEP)
{
var prevStepHeight = 0L;
if (!GlobalParameters.IsTestnet &&
newBlock.Header.Height <= POC.DIFFICULTY_CALCULATE_LOGIC_ADJUST_HEIGHT)
{
prevStepHeight = newBlock.Header.Height - POC.DIFFIUCLTY_ADJUST_STEP - 1;
}
else
{
prevStepHeight = newBlock.Header.Height - POC.DIFFIUCLTY_ADJUST_STEP;
}
prevStepBlock = BlockDac.Default.SelectByHeight(prevStepHeight);
}
//区块必须包含交易，否则错误
if (newBlock.Transactions == null || newBlock.Transactions.Count == 0)
{
throw new CommonException(ErrorCode.Engine.Transaction.Verify.NOT_FOUND_COINBASE);
}
//第一个一定是coinbase,奖励+手续费
var coinbase = newBlock.Transactions[0];
//校验打包区块的矿池是否经过验证
var minerInfo = Encoding.UTF8.GetString(Base16.Decode(coinbase.Inputs[0].UnlockScript)).Split("`")[0];
var pool = MiningPoolComponent.CurrentMiningPools.FirstOrDefault(x => x.Name == minerInfo);
if (pool == null)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.MINING_POOL_NOT_EXISTED);
}
//校验区块的签名信息
if (!POC.VerifyBlockSignature(newBlock.Header.PayloadHash, newBlock.Header.BlockSignature, pool.PublicKey))
{
LogHelper.Warn($"PayloadHash::{newBlock.Header.PayloadHash}");
LogHelper.Warn($"BlockSignature::{newBlock.Header.BlockSignature}");
LogHelper.Warn($"PublicKey::{pool.PublicKey}");
throw new CommonException(ErrorCode.Engine.Block.Verify.BLOCK_SIGNATURE_IS_ERROR);
}
if (POC.CalculateBaseTarget(newBlock.Header.Height, previousBlockBits, previousBlockTimestamp,
prevStepBlock) != newBlock.Header.Bits)
{
throw new CommonException(ErrorCode.Engine.Block.Verify.BITS_IS_WRONG);
}
var targetResult = POC.CalculateTargetResult(newBlock);
if (newBlock.Header.Height == 17687 || POC.Verify(newBlock.Header.Bits, targetResult))
{
return(true);
}
else
{
throw new CommonException(ErrorCode.Engine.Block.Verify.POC_VERIFY_FAIL);
}
}
