12 log "github.com/sirupsen/logrus"
13 "github.com/tendermint/go-crypto"
14 cmn "github.com/tendermint/tmlibs/common"
16 cfg "github.com/bytom/config"
17 "github.com/bytom/consensus"
18 "github.com/bytom/p2p"
19 "github.com/bytom/p2p/discover"
20 core "github.com/bytom/protocol"
21 "github.com/bytom/protocol/bc"
22 "github.com/bytom/protocol/bc/types"
23 "github.com/bytom/version"
30 // Chain is the interface for Bytom core
31 type Chain interface {
32 BestBlockHeader() *types.BlockHeader
33 BestBlockHeight() uint64
34 CalcNextSeed(*bc.Hash) (*bc.Hash, error)
35 GetBlockByHash(*bc.Hash) (*types.Block, error)
36 GetBlockByHeight(uint64) (*types.Block, error)
37 GetHeaderByHash(*bc.Hash) (*types.BlockHeader, error)
38 GetHeaderByHeight(uint64) (*types.BlockHeader, error)
39 InMainChain(bc.Hash) bool
40 ProcessBlock(*types.Block) (bool, error)
41 ValidateTx(*types.Tx) (bool, error)
44 //SyncManager Sync Manager is responsible for the business layer information synchronization
45 type SyncManager struct {
49 privKey crypto.PrivKeyEd25519 // local node's p2p key
52 blockFetcher *blockFetcher
53 blockKeeper *blockKeeper
56 newTxCh chan *types.Tx
57 newBlockCh chan *bc.Hash
58 txSyncCh chan *txSyncMsg
59 quitSync chan struct{}
63 //NewSyncManager create a sync manager
64 func NewSyncManager(config *cfg.Config, chain Chain, txPool *core.TxPool, newBlockCh chan *bc.Hash) (*SyncManager, error) {
65 genesisHeader, err := chain.GetHeaderByHeight(0)
70 sw := p2p.NewSwitch(config)
71 peers := newPeerSet(sw)
72 manager := &SyncManager{
74 genesisHash: genesisHeader.Hash(),
77 privKey: crypto.GenPrivKeyEd25519(),
78 blockFetcher: newBlockFetcher(chain, peers),
79 blockKeeper: newBlockKeeper(chain, peers),
81 newTxCh: make(chan *types.Tx, maxTxChanSize),
82 newBlockCh: newBlockCh,
83 txSyncCh: make(chan *txSyncMsg),
84 quitSync: make(chan struct{}),
88 protocolReactor := NewProtocolReactor(manager, manager.peers)
89 manager.sw.AddReactor("PROTOCOL", protocolReactor)
91 // Create & add listener
92 var listenerStatus bool
94 if !config.VaultMode {
95 p, address := protocolAndAddress(manager.config.P2P.ListenAddress)
96 l, listenerStatus = p2p.NewDefaultListener(p, address, manager.config.P2P.SkipUPNP)
97 manager.sw.AddListener(l)
99 discv, err := initDiscover(config, &manager.privKey, l.ExternalAddress().Port)
103 manager.sw.SetDiscv(discv)
105 manager.sw.SetNodeInfo(manager.makeNodeInfo(listenerStatus))
106 manager.sw.SetNodePrivKey(manager.privKey)
110 //BestPeer return the highest p2p peerInfo
111 func (sm *SyncManager) BestPeer() *PeerInfo {
112 bestPeer := sm.peers.bestPeer(consensus.SFFullNode)
114 return bestPeer.getPeerInfo()
119 // GetNewTxCh return a unconfirmed transaction feed channel
120 func (sm *SyncManager) GetNewTxCh() chan *types.Tx {
124 //GetPeerInfos return peer info of all peers
125 func (sm *SyncManager) GetPeerInfos() []*PeerInfo {
126 return sm.peers.getPeerInfos()
129 //IsCaughtUp check wheather the peer finish the sync
130 func (sm *SyncManager) IsCaughtUp() bool {
131 peer := sm.peers.bestPeer(consensus.SFFullNode)
132 return peer == nil || peer.Height() <= sm.chain.BestBlockHeight()
135 //NodeInfo get P2P peer node info
136 func (sm *SyncManager) NodeInfo() *p2p.NodeInfo {
137 return sm.sw.NodeInfo()
140 //StopPeer try to stop peer by given ID
141 func (sm *SyncManager) StopPeer(peerID string) error {
142 if peer := sm.peers.getPeer(peerID); peer == nil {
143 return errors.New("peerId not exist")
145 sm.peers.removePeer(peerID)
149 //Switch get sync manager switch
150 func (sm *SyncManager) Switch() *p2p.Switch {
154 func (sm *SyncManager) handleBlockMsg(peer *peer, msg *BlockMessage) {
155 sm.blockKeeper.processBlock(peer.ID(), msg.GetBlock())
158 func (sm *SyncManager) handleBlocksMsg(peer *peer, msg *BlocksMessage) {
159 blocks, err := msg.GetBlocks()
161 log.WithField("err", err).Debug("fail on handleBlocksMsg GetBlocks")
165 sm.blockKeeper.processBlocks(peer.ID(), blocks)
168 func (sm *SyncManager) handleGetBlockMsg(peer *peer, msg *GetBlockMessage) {
169 var block *types.Block
172 block, err = sm.chain.GetBlockByHeight(msg.Height)
174 block, err = sm.chain.GetBlockByHash(msg.GetHash())
177 log.WithField("err", err).Warning("fail on handleGetBlockMsg get block from chain")
181 ok, err := peer.sendBlock(block)
183 sm.peers.removePeer(peer.ID())
186 log.WithField("err", err).Error("fail on handleGetBlockMsg sentBlock")
190 func (sm *SyncManager) handleGetBlocksMsg(peer *peer, msg *GetBlocksMessage) {
191 blocks, err := sm.blockKeeper.locateBlocks(msg.GetBlockLocator(), msg.GetStopHash())
192 if err != nil || len(blocks) == 0 {
197 sendBlocks := []*types.Block{}
198 for _, block := range blocks {
199 rawData, err := block.MarshalText()
201 log.WithField("err", err).Error("fail on handleGetBlocksMsg marshal block")
205 if totalSize+len(rawData) > maxBlockchainResponseSize/2 {
208 totalSize += len(rawData)
209 sendBlocks = append(sendBlocks, block)
212 ok, err := peer.sendBlocks(sendBlocks)
214 sm.peers.removePeer(peer.ID())
217 log.WithField("err", err).Error("fail on handleGetBlocksMsg sentBlock")
221 func (sm *SyncManager) handleGetHeadersMsg(peer *peer, msg *GetHeadersMessage) {
222 headers, err := sm.blockKeeper.locateHeaders(msg.GetBlockLocator(), msg.GetStopHash())
223 if err != nil || len(headers) == 0 {
224 log.WithField("err", err).Debug("fail on handleGetHeadersMsg locateHeaders")
228 ok, err := peer.sendHeaders(headers)
230 sm.peers.removePeer(peer.ID())
233 log.WithField("err", err).Error("fail on handleGetHeadersMsg sentBlock")
237 func (sm *SyncManager) handleHeadersMsg(peer *peer, msg *HeadersMessage) {
238 headers, err := msg.GetHeaders()
240 log.WithField("err", err).Debug("fail on handleHeadersMsg GetHeaders")
244 sm.blockKeeper.processHeaders(peer.ID(), headers)
247 func (sm *SyncManager) handleMineBlockMsg(peer *peer, msg *MineBlockMessage) {
248 block, err := msg.GetMineBlock()
250 log.WithField("err", err).Warning("fail on handleMineBlockMsg GetMineBlock")
255 peer.markBlock(&hash)
256 sm.blockFetcher.processNewBlock(&blockMsg{peerID: peer.ID(), block: block})
257 peer.setStatus(block.Height, &hash)
260 func (sm *SyncManager) handleStatusRequestMsg(peer BasePeer) {
261 bestHeader := sm.chain.BestBlockHeader()
262 genesisBlock, err := sm.chain.GetBlockByHeight(0)
264 log.WithField("err", err).Error("fail on handleStatusRequestMsg get genesis")
267 genesisHash := genesisBlock.Hash()
268 msg := NewStatusResponseMessage(bestHeader, &genesisHash)
269 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
270 sm.peers.removePeer(peer.ID())
274 func (sm *SyncManager) handleStatusResponseMsg(basePeer BasePeer, msg *StatusResponseMessage) {
275 if peer := sm.peers.getPeer(basePeer.ID()); peer != nil {
276 peer.setStatus(msg.Height, msg.GetHash())
280 if genesisHash := msg.GetGenesisHash(); sm.genesisHash != *genesisHash {
281 log.WithFields(log.Fields{
282 "remote genesis": genesisHash.String(),
283 "local genesis": sm.genesisHash.String(),
284 }).Warn("fail hand shake due to differnt genesis")
288 sm.peers.addPeer(basePeer, msg.Height, msg.GetHash())
291 func (sm *SyncManager) handleTransactionMsg(peer *peer, msg *TransactionMessage) {
292 tx, err := msg.GetTransaction()
294 sm.peers.addBanScore(peer.ID(), 0, 10, "fail on get tx from message")
298 if isOrphan, err := sm.chain.ValidateTx(tx); err != nil && isOrphan == false {
299 sm.peers.addBanScore(peer.ID(), 10, 0, "fail on validate tx transaction")
303 func (sm *SyncManager) processMsg(basePeer BasePeer, msgType byte, msg BlockchainMessage) {
304 peer := sm.peers.getPeer(basePeer.ID())
305 if peer == nil && msgType != StatusResponseByte && msgType != StatusRequestByte {
309 switch msg := msg.(type) {
310 case *GetBlockMessage:
311 sm.handleGetBlockMsg(peer, msg)
314 sm.handleBlockMsg(peer, msg)
316 case *StatusRequestMessage:
317 sm.handleStatusRequestMsg(basePeer)
319 case *StatusResponseMessage:
320 sm.handleStatusResponseMsg(basePeer, msg)
322 case *TransactionMessage:
323 sm.handleTransactionMsg(peer, msg)
325 case *MineBlockMessage:
326 sm.handleMineBlockMsg(peer, msg)
328 case *GetHeadersMessage:
329 sm.handleGetHeadersMsg(peer, msg)
331 case *HeadersMessage:
332 sm.handleHeadersMsg(peer, msg)
334 case *GetBlocksMessage:
335 sm.handleGetBlocksMsg(peer, msg)
338 sm.handleBlocksMsg(peer, msg)
341 log.Errorf("unknown message type %v", reflect.TypeOf(msg))
346 func protocolAndAddress(listenAddr string) (string, string) {
347 p, address := "tcp", listenAddr
348 parts := strings.SplitN(address, "://", 2)
350 p, address = parts[0], parts[1]
355 func (sm *SyncManager) makeNodeInfo(listenerStatus bool) *p2p.NodeInfo {
356 nodeInfo := &p2p.NodeInfo{
357 PubKey: sm.privKey.PubKey().Unwrap().(crypto.PubKeyEd25519),
358 Moniker: sm.config.Moniker,
359 Network: sm.config.ChainID,
360 Version: version.Version,
361 Other: []string{strconv.FormatUint(uint64(consensus.DefaultServices), 10)},
364 if !sm.sw.IsListening() {
368 p2pListener := sm.sw.Listeners()[0]
370 // We assume that the rpcListener has the same ExternalAddress.
371 // This is probably true because both P2P and RPC listeners use UPnP,
372 // except of course if the rpc is only bound to localhost
374 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.ExternalAddress().IP.String(), p2pListener.ExternalAddress().Port)
376 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.InternalAddress().IP.String(), p2pListener.InternalAddress().Port)
381 //Start start sync manager service
382 func (sm *SyncManager) Start() {
383 if _, err := sm.sw.Start(); err != nil {
384 cmn.Exit(cmn.Fmt("fail on start SyncManager: %v", err))
386 // broadcast transactions
387 go sm.txBroadcastLoop()
388 go sm.minedBroadcastLoop()
392 //Stop stop sync manager
393 func (sm *SyncManager) Stop() {
398 func initDiscover(config *cfg.Config, priv *crypto.PrivKeyEd25519, port uint16) (*discover.Network, error) {
399 addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort("0.0.0.0", strconv.FormatUint(uint64(port), 10)))
404 conn, err := net.ListenUDP("udp", addr)
409 realaddr := conn.LocalAddr().(*net.UDPAddr)
410 ntab, err := discover.ListenUDP(priv, conn, realaddr, path.Join(config.DBDir(), "discover.db"), nil)
415 // add the seeds node to the discover table
416 if config.P2P.Seeds == "" {
419 nodes := []*discover.Node{}
420 for _, seed := range strings.Split(config.P2P.Seeds, ",") {
421 url := "enode://" + hex.EncodeToString(crypto.Sha256([]byte(seed))) + "@" + seed
422 nodes = append(nodes, discover.MustParseNode(url))
424 if err = ntab.SetFallbackNodes(nodes); err != nil {
430 func (sm *SyncManager) minedBroadcastLoop() {
433 case blockHash := <-sm.newBlockCh:
434 block, err := sm.chain.GetBlockByHash(blockHash)
436 log.Errorf("Failed on mined broadcast loop get block %v", err)
439 if err := sm.peers.broadcastMinedBlock(block); err != nil {
440 log.Errorf("Broadcast mine block error. %v", err)