/
block.go
172 lines (154 loc) · 5.76 KB
/
block.go
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// Copyright Turing Corp. 2018 All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package broadcast
import (
"bytes"
"encoding/hex"
"github.com/turingchain2020/turingchain/common/merkle"
"github.com/turingchain2020/turingchain/types"
)
func (p *broadcastProtocol) sendBlock(block *types.P2PBlock, p2pData *types.BroadCastData, pid string) (doSend bool) {
byteHash := block.Block.Hash(p.ChainCfg)
blockHash := hex.EncodeToString(byteHash)
//检测冗余发送
if addIgnoreSendPeerAtomic(p.blockSendFilter, blockHash, pid) {
return false
}
blockSize := types.Size(block.Block)
//log.Debug("P2PSendBlock", "blockHash", blockHash, "peerAddr", peerAddr, "blockSize(KB)", float32(blockSize)/1024)
//区块内交易采用哈希广播
if blockSize >= int(p.p2pCfg.MinLtBlockSize*1024) {
ltBlock := &types.LightBlock{}
ltBlock.Size = int64(blockSize)
ltBlock.Header = block.Block.GetHeader(p.ChainCfg)
ltBlock.Header.Hash = byteHash[:]
ltBlock.Header.Signature = block.Block.Signature
ltBlock.MinerTx = block.Block.Txs[0]
for _, tx := range block.Block.Txs[1:] {
//tx short hash
ltBlock.STxHashes = append(ltBlock.STxHashes, types.CalcTxShortHash(tx.Hash()))
}
p2pData.Value = &types.BroadCastData_LtBlock{LtBlock: ltBlock}
} else {
p2pData.Value = &types.BroadCastData_Block{Block: block}
}
return true
}
func (p *broadcastProtocol) recvBlock(block *types.P2PBlock, pid, peerAddr string) error {
if block.GetBlock() == nil {
return types.ErrInvalidParam
}
blockHash := hex.EncodeToString(block.GetBlock().Hash(p.ChainCfg))
//将节点id添加到发送过滤, 避免冗余发送
addIgnoreSendPeerAtomic(p.blockSendFilter, blockHash, pid)
//如果重复接收, 则不再发到blockchain执行
if p.blockFilter.AddWithCheckAtomic(blockHash, true) {
return nil
}
log.Debug("recvBlock", "height", block.GetBlock().GetHeight(), "size(KB)", float32(types.Size(block.GetBlock()))/1024)
//发送至blockchain执行
if err := p.postBlockChain(blockHash, pid, block.GetBlock()); err != nil {
log.Error("recvBlock", "send block to blockchain Error", err.Error())
return errSendBlockChain
}
return nil
}
func (p *broadcastProtocol) recvLtBlock(ltBlock *types.LightBlock, pid, peerAddr, version string) error {
blockHash := hex.EncodeToString(ltBlock.Header.Hash)
//将节点id添加到发送过滤, 避免冗余发送
addIgnoreSendPeerAtomic(p.blockSendFilter, blockHash, pid)
//检测是否已经收到此block
if p.blockFilter.AddWithCheckAtomic(blockHash, true) {
return nil
}
//组装block
block := &types.Block{}
block.TxHash = ltBlock.Header.TxHash
block.Signature = ltBlock.Header.Signature
block.ParentHash = ltBlock.Header.ParentHash
block.Height = ltBlock.Header.Height
block.BlockTime = ltBlock.Header.BlockTime
block.Difficulty = ltBlock.Header.Difficulty
block.Version = ltBlock.Header.Version
block.StateHash = ltBlock.Header.StateHash
//add miner tx
block.Txs = append(block.Txs, ltBlock.MinerTx)
txList := &types.ReplyTxList{}
ok := false
//get tx list from mempool
if len(ltBlock.STxHashes) > 0 {
resp, err := p.P2PEnv.QueryModule("mempool", types.EventTxListByHash,
&types.ReqTxHashList{Hashes: ltBlock.STxHashes, IsShortHash: true})
if err != nil {
log.Error("recvLtBlock", "queryTxListByHashErr", err)
return errRecvMempool
}
txList, ok = resp.(*types.ReplyTxList)
if !ok {
log.Error("recvLtBlock", "queryMemPool", "nilReplyTxList")
}
}
nilTxIndices := make([]int32, 0)
for i := 0; ok && i < len(txList.Txs); i++ {
tx := txList.Txs[i]
if tx == nil {
//tx not exist in mempool
nilTxIndices = append(nilTxIndices, int32(i+1))
tx = &types.Transaction{}
} else if count := tx.GetGroupCount(); count > 0 {
group, err := tx.GetTxGroup()
if err != nil {
log.Error("recvLtBlock", "getTxGroupErr", err)
//触发请求所有
nilTxIndices = nilTxIndices[:0]
break
}
block.Txs = append(block.Txs, group.Txs...)
//跳过遍历
i += len(group.Txs) - 1
continue
}
block.Txs = append(block.Txs, tx)
}
nilTxLen := len(nilTxIndices)
//需要比较交易根哈希是否一致, 不一致需要请求区块内所有的交易
if nilTxLen == 0 && bytes.Equal(block.TxHash, merkle.CalcMerkleRoot(p.ChainCfg, block.GetHeight(), block.Txs)) {
log.Debug("recvLtBlock", "height", block.GetHeight(), "txCount", ltBlock.Header.TxCount, "size(KB)", float32(ltBlock.Size)/1024)
//发送至blockchain执行
if err := p.postBlockChain(blockHash, pid, block); err != nil {
log.Error("recvLtBlock", "send block to blockchain Error", err.Error())
return errSendBlockChain
}
return nil
}
//本地缺失交易或者根哈希不同(nilTxLen==0)
log.Debug("recvLtBlock", "height", ltBlock.Header.Height, "hash", blockHash,
"txCount", ltBlock.Header.TxCount, "missTxCount", nilTxLen,
"blockSize(KB)", float32(ltBlock.Size)/1024, "buildBlockSize(KB)", float32(block.Size())/1024)
// 缺失的交易个数大于总数1/3 或者缺失数据大小大于2/3, 触发请求区块所有交易数据
if nilTxLen > 0 && (float32(nilTxLen) > float32(ltBlock.Header.TxCount)/3 ||
float32(block.Size()) < float32(ltBlock.Size)/3) {
//空的TxIndices表示请求区块内所有交易
nilTxIndices = nilTxIndices[:0]
}
// query not exist txs
query := &types.P2PQueryData{
Value: &types.P2PQueryData_BlockTxReq{
BlockTxReq: &types.P2PBlockTxReq{
BlockHash: blockHash,
TxIndices: nilTxIndices,
},
},
}
//需要将不完整的block预存
p.ltBlockCache.Add(blockHash, block, block.Size())
//query peer
if err := p.sendPeer(query, pid, version); err != nil {
log.Error("recvLtBlock", "pid", pid, "addr", peerAddr, "err", err)
p.blockFilter.Remove(blockHash)
p.ltBlockCache.Remove(blockHash)
return errSendPeer
}
return nil
}