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 "github.com/bytom/p2p/pex"
21 core "github.com/bytom/protocol"
22 "github.com/bytom/protocol/bc"
23 "github.com/bytom/protocol/bc/types"
24 "github.com/bytom/version"
31 // Chain is the interface for Bytom core
32 type Chain interface {
33 BestBlockHeader() *types.BlockHeader
34 BestBlockHeight() uint64
35 CalcNextSeed(*bc.Hash) (*bc.Hash, error)
36 GetBlockByHash(*bc.Hash) (*types.Block, error)
37 GetBlockByHeight(uint64) (*types.Block, error)
38 GetHeaderByHash(*bc.Hash) (*types.BlockHeader, error)
39 GetHeaderByHeight(uint64) (*types.BlockHeader, error)
40 InMainChain(bc.Hash) bool
41 ProcessBlock(*types.Block) (bool, error)
42 ValidateTx(*types.Tx) (bool, error)
45 //SyncManager Sync Manager is responsible for the business layer information synchronization
46 type SyncManager struct {
50 privKey crypto.PrivKeyEd25519 // local node's p2p key
53 blockFetcher *blockFetcher
54 blockKeeper *blockKeeper
57 newTxCh chan *types.Tx
58 newBlockCh chan *bc.Hash
59 txSyncCh chan *txSyncMsg
60 quitSync chan struct{}
64 //NewSyncManager create a sync manager
65 func NewSyncManager(config *cfg.Config, chain Chain, txPool *core.TxPool, newBlockCh chan *bc.Hash) (*SyncManager, error) {
66 genesisHeader, err := chain.GetHeaderByHeight(0)
71 sw := p2p.NewSwitch(config)
72 peers := newPeerSet(sw)
73 manager := &SyncManager{
75 genesisHash: genesisHeader.Hash(),
78 privKey: crypto.GenPrivKeyEd25519(),
79 blockFetcher: newBlockFetcher(chain, peers),
80 blockKeeper: newBlockKeeper(chain, peers),
82 newTxCh: make(chan *types.Tx, maxTxChanSize),
83 newBlockCh: newBlockCh,
84 txSyncCh: make(chan *txSyncMsg),
85 quitSync: make(chan struct{}),
89 protocolReactor := NewProtocolReactor(manager, manager.peers)
90 manager.sw.AddReactor("PROTOCOL", protocolReactor)
92 // Create & add listener
93 var listenerStatus bool
95 if !config.VaultMode {
96 p, address := protocolAndAddress(manager.config.P2P.ListenAddress)
97 l, listenerStatus = p2p.NewDefaultListener(p, address, manager.config.P2P.SkipUPNP)
98 manager.sw.AddListener(l)
100 discv, err := initDiscover(config, &manager.privKey, l.ExternalAddress().Port)
105 pexReactor := pex.NewPEXReactor(discv)
106 manager.sw.AddReactor("PEX", pexReactor)
108 manager.sw.SetNodeInfo(manager.makeNodeInfo(listenerStatus))
109 manager.sw.SetNodePrivKey(manager.privKey)
113 //BestPeer return the highest p2p peerInfo
114 func (sm *SyncManager) BestPeer() *PeerInfo {
115 bestPeer := sm.peers.bestPeer(consensus.SFFullNode)
117 return bestPeer.getPeerInfo()
122 // GetNewTxCh return a unconfirmed transaction feed channel
123 func (sm *SyncManager) GetNewTxCh() chan *types.Tx {
127 //GetPeerInfos return peer info of all peers
128 func (sm *SyncManager) GetPeerInfos() []*PeerInfo {
129 return sm.peers.getPeerInfos()
132 //IsCaughtUp check wheather the peer finish the sync
133 func (sm *SyncManager) IsCaughtUp() bool {
134 peer := sm.peers.bestPeer(consensus.SFFullNode)
135 return peer == nil || peer.Height() <= sm.chain.BestBlockHeight()
138 //NodeInfo get P2P peer node info
139 func (sm *SyncManager) NodeInfo() *p2p.NodeInfo {
140 return sm.sw.NodeInfo()
143 //StopPeer try to stop peer by given ID
144 func (sm *SyncManager) StopPeer(peerID string) error {
145 if peer := sm.peers.getPeer(peerID); peer == nil {
146 return errors.New("peerId not exist")
148 sm.peers.removePeer(peerID)
152 //Switch get sync manager switch
153 func (sm *SyncManager) Switch() *p2p.Switch {
157 func (sm *SyncManager) handleBlockMsg(peer *peer, msg *BlockMessage) {
158 sm.blockKeeper.processBlock(peer.ID(), msg.GetBlock())
161 func (sm *SyncManager) handleBlocksMsg(peer *peer, msg *BlocksMessage) {
162 blocks, err := msg.GetBlocks()
164 log.WithField("err", err).Debug("fail on handleBlocksMsg GetBlocks")
168 sm.blockKeeper.processBlocks(peer.ID(), blocks)
171 func (sm *SyncManager) handleGetBlockMsg(peer *peer, msg *GetBlockMessage) {
172 var block *types.Block
175 block, err = sm.chain.GetBlockByHeight(msg.Height)
177 block, err = sm.chain.GetBlockByHash(msg.GetHash())
180 log.WithField("err", err).Warning("fail on handleGetBlockMsg get block from chain")
184 ok, err := peer.sendBlock(block)
186 sm.peers.removePeer(peer.ID())
189 log.WithField("err", err).Error("fail on handleGetBlockMsg sentBlock")
193 func (sm *SyncManager) handleGetBlocksMsg(peer *peer, msg *GetBlocksMessage) {
194 blocks, err := sm.blockKeeper.locateBlocks(msg.GetBlockLocator(), msg.GetStopHash())
195 if err != nil || len(blocks) == 0 {
200 sendBlocks := []*types.Block{}
201 for _, block := range blocks {
202 rawData, err := block.MarshalText()
204 log.WithField("err", err).Error("fail on handleGetBlocksMsg marshal block")
208 if totalSize+len(rawData) > maxBlockchainResponseSize-16 {
211 totalSize += len(rawData)
212 sendBlocks = append(sendBlocks, block)
215 ok, err := peer.sendBlocks(sendBlocks)
217 sm.peers.removePeer(peer.ID())
220 log.WithField("err", err).Error("fail on handleGetBlocksMsg sentBlock")
224 func (sm *SyncManager) handleGetHeadersMsg(peer *peer, msg *GetHeadersMessage) {
225 headers, err := sm.blockKeeper.locateHeaders(msg.GetBlockLocator(), msg.GetStopHash())
226 if err != nil || len(headers) == 0 {
227 log.WithField("err", err).Debug("fail on handleGetHeadersMsg locateHeaders")
231 ok, err := peer.sendHeaders(headers)
233 sm.peers.removePeer(peer.ID())
236 log.WithField("err", err).Error("fail on handleGetHeadersMsg sentBlock")
240 func (sm *SyncManager) handleHeadersMsg(peer *peer, msg *HeadersMessage) {
241 headers, err := msg.GetHeaders()
243 log.WithField("err", err).Debug("fail on handleHeadersMsg GetHeaders")
247 sm.blockKeeper.processHeaders(peer.ID(), headers)
250 func (sm *SyncManager) handleMineBlockMsg(peer *peer, msg *MineBlockMessage) {
251 block, err := msg.GetMineBlock()
253 log.WithField("err", err).Warning("fail on handleMineBlockMsg GetMineBlock")
258 peer.markBlock(&hash)
259 sm.blockFetcher.processNewBlock(&blockMsg{peerID: peer.ID(), block: block})
260 peer.setStatus(block.Height, &hash)
263 func (sm *SyncManager) handleStatusRequestMsg(peer BasePeer) {
264 bestHeader := sm.chain.BestBlockHeader()
265 genesisBlock, err := sm.chain.GetBlockByHeight(0)
267 log.WithField("err", err).Error("fail on handleStatusRequestMsg get genesis")
270 genesisHash := genesisBlock.Hash()
271 msg := NewStatusResponseMessage(bestHeader, &genesisHash)
272 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
273 sm.peers.removePeer(peer.ID())
277 func (sm *SyncManager) handleStatusResponseMsg(basePeer BasePeer, msg *StatusResponseMessage) {
278 if peer := sm.peers.getPeer(basePeer.ID()); peer != nil {
279 peer.setStatus(msg.Height, msg.GetHash())
283 if genesisHash := msg.GetGenesisHash(); sm.genesisHash != *genesisHash {
284 log.WithFields(log.Fields{
285 "remote genesis": genesisHash.String(),
286 "local genesis": sm.genesisHash.String(),
287 }).Warn("fail hand shake due to differnt genesis")
291 sm.peers.addPeer(basePeer, msg.Height, msg.GetHash())
294 func (sm *SyncManager) handleTransactionMsg(peer *peer, msg *TransactionMessage) {
295 tx, err := msg.GetTransaction()
297 sm.peers.addBanScore(peer.ID(), 0, 10, "fail on get tx from message")
301 if isOrphan, err := sm.chain.ValidateTx(tx); err != nil && isOrphan == false {
302 sm.peers.addBanScore(peer.ID(), 10, 0, "fail on validate tx transaction")
306 func (sm *SyncManager) processMsg(basePeer BasePeer, msgType byte, msg BlockchainMessage) {
307 peer := sm.peers.getPeer(basePeer.ID())
308 if peer == nil && msgType != StatusResponseByte && msgType != StatusRequestByte {
312 switch msg := msg.(type) {
313 case *GetBlockMessage:
314 sm.handleGetBlockMsg(peer, msg)
317 sm.handleBlockMsg(peer, msg)
319 case *StatusRequestMessage:
320 sm.handleStatusRequestMsg(basePeer)
322 case *StatusResponseMessage:
323 sm.handleStatusResponseMsg(basePeer, msg)
325 case *TransactionMessage:
326 sm.handleTransactionMsg(peer, msg)
328 case *MineBlockMessage:
329 sm.handleMineBlockMsg(peer, msg)
331 case *GetHeadersMessage:
332 sm.handleGetHeadersMsg(peer, msg)
334 case *HeadersMessage:
335 sm.handleHeadersMsg(peer, msg)
337 case *GetBlocksMessage:
338 sm.handleGetBlocksMsg(peer, msg)
341 sm.handleBlocksMsg(peer, msg)
344 log.Errorf("unknown message type %v", reflect.TypeOf(msg))
349 func protocolAndAddress(listenAddr string) (string, string) {
350 p, address := "tcp", listenAddr
351 parts := strings.SplitN(address, "://", 2)
353 p, address = parts[0], parts[1]
358 func (sm *SyncManager) makeNodeInfo(listenerStatus bool) *p2p.NodeInfo {
359 nodeInfo := &p2p.NodeInfo{
360 PubKey: sm.privKey.PubKey().Unwrap().(crypto.PubKeyEd25519),
361 Moniker: sm.config.Moniker,
362 Network: sm.config.ChainID,
363 Version: version.Version,
364 Other: []string{strconv.FormatUint(uint64(consensus.DefaultServices), 10)},
367 if !sm.sw.IsListening() {
371 p2pListener := sm.sw.Listeners()[0]
373 // We assume that the rpcListener has the same ExternalAddress.
374 // This is probably true because both P2P and RPC listeners use UPnP,
375 // except of course if the rpc is only bound to localhost
377 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.ExternalAddress().IP.String(), p2pListener.ExternalAddress().Port)
379 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.InternalAddress().IP.String(), p2pListener.InternalAddress().Port)
384 //Start start sync manager service
385 func (sm *SyncManager) Start() {
386 if _, err := sm.sw.Start(); err != nil {
387 cmn.Exit(cmn.Fmt("fail on start SyncManager: %v", err))
389 // broadcast transactions
390 go sm.txBroadcastLoop()
391 go sm.minedBroadcastLoop()
395 //Stop stop sync manager
396 func (sm *SyncManager) Stop() {
401 func initDiscover(config *cfg.Config, priv *crypto.PrivKeyEd25519, port uint16) (*discover.Network, error) {
402 addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort("0.0.0.0", strconv.FormatUint(uint64(port), 10)))
407 conn, err := net.ListenUDP("udp", addr)
412 realaddr := conn.LocalAddr().(*net.UDPAddr)
413 ntab, err := discover.ListenUDP(priv, conn, realaddr, path.Join(config.DBDir(), "discover.db"), nil)
418 // add the seeds node to the discover table
419 if config.P2P.Seeds == "" {
422 nodes := []*discover.Node{}
423 for _, seed := range strings.Split(config.P2P.Seeds, ",") {
424 url := "enode://" + hex.EncodeToString(crypto.Sha256([]byte(seed))) + "@" + seed
425 nodes = append(nodes, discover.MustParseNode(url))
427 if err = ntab.SetFallbackNodes(nodes); err != nil {
433 func (sm *SyncManager) minedBroadcastLoop() {
436 case blockHash := <-sm.newBlockCh:
437 block, err := sm.chain.GetBlockByHash(blockHash)
439 log.Errorf("Failed on mined broadcast loop get block %v", err)
442 if err := sm.peers.broadcastMinedBlock(block); err != nil {
443 log.Errorf("Broadcast mine block error. %v", err)