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) handleFilterClearMsg(peer *peer) {
169 peer.filterAdds.Clear()
172 func (sm *SyncManager) handleFilterLoadMsg(peer *peer, msg *FilterLoadMessage) {
173 if len(msg.Addresses) == 0 {
174 log.Info("the addresses is empty from filter load message")
177 peer.addFilterAddresses(msg.Addresses)
180 func (sm *SyncManager) handleGetBlockMsg(peer *peer, msg *GetBlockMessage) {
181 var block *types.Block
184 block, err = sm.chain.GetBlockByHeight(msg.Height)
186 block, err = sm.chain.GetBlockByHash(msg.GetHash())
189 log.WithField("err", err).Warning("fail on handleGetBlockMsg get block from chain")
193 ok, err := peer.sendBlock(block)
195 sm.peers.removePeer(peer.ID())
198 log.WithField("err", err).Error("fail on handleGetBlockMsg sentBlock")
202 func (sm *SyncManager) handleGetBlocksMsg(peer *peer, msg *GetBlocksMessage) {
203 blocks, err := sm.blockKeeper.locateBlocks(msg.GetBlockLocator(), msg.GetStopHash())
204 if err != nil || len(blocks) == 0 {
209 sendBlocks := []*types.Block{}
210 for _, block := range blocks {
211 rawData, err := block.MarshalText()
213 log.WithField("err", err).Error("fail on handleGetBlocksMsg marshal block")
217 if totalSize+len(rawData) > maxBlockchainResponseSize/2 {
220 totalSize += len(rawData)
221 sendBlocks = append(sendBlocks, block)
224 ok, err := peer.sendBlocks(sendBlocks)
226 sm.peers.removePeer(peer.ID())
229 log.WithField("err", err).Error("fail on handleGetBlocksMsg sentBlock")
233 func (sm *SyncManager) handleGetHeadersMsg(peer *peer, msg *GetHeadersMessage) {
234 headers, err := sm.blockKeeper.locateHeaders(msg.GetBlockLocator(), msg.GetStopHash())
235 if err != nil || len(headers) == 0 {
236 log.WithField("err", err).Debug("fail on handleGetHeadersMsg locateHeaders")
240 ok, err := peer.sendHeaders(headers)
242 sm.peers.removePeer(peer.ID())
245 log.WithField("err", err).Error("fail on handleGetHeadersMsg sentBlock")
249 func (sm *SyncManager) handleGetMerkleBlockMsg(peer *peer, msg *GetMerkleBlockMessage) {}
251 func (sm *SyncManager) handleHeadersMsg(peer *peer, msg *HeadersMessage) {
252 headers, err := msg.GetHeaders()
254 log.WithField("err", err).Debug("fail on handleHeadersMsg GetHeaders")
258 sm.blockKeeper.processHeaders(peer.ID(), headers)
261 func (sm *SyncManager) handleMineBlockMsg(peer *peer, msg *MineBlockMessage) {
262 block, err := msg.GetMineBlock()
264 log.WithField("err", err).Warning("fail on handleMineBlockMsg GetMineBlock")
269 peer.markBlock(&hash)
270 sm.blockFetcher.processNewBlock(&blockMsg{peerID: peer.ID(), block: block})
271 peer.setStatus(block.Height, &hash)
274 func (sm *SyncManager) handleStatusRequestMsg(peer BasePeer) {
275 bestHeader := sm.chain.BestBlockHeader()
276 genesisBlock, err := sm.chain.GetBlockByHeight(0)
278 log.WithField("err", err).Error("fail on handleStatusRequestMsg get genesis")
281 genesisHash := genesisBlock.Hash()
282 msg := NewStatusResponseMessage(bestHeader, &genesisHash)
283 if ok := peer.TrySend(BlockchainChannel, struct{ BlockchainMessage }{msg}); !ok {
284 sm.peers.removePeer(peer.ID())
288 func (sm *SyncManager) handleStatusResponseMsg(basePeer BasePeer, msg *StatusResponseMessage) {
289 if peer := sm.peers.getPeer(basePeer.ID()); peer != nil {
290 peer.setStatus(msg.Height, msg.GetHash())
294 if genesisHash := msg.GetGenesisHash(); sm.genesisHash != *genesisHash {
295 log.WithFields(log.Fields{
296 "remote genesis": genesisHash.String(),
297 "local genesis": sm.genesisHash.String(),
298 }).Warn("fail hand shake due to differnt genesis")
302 sm.peers.addPeer(basePeer, msg.Height, msg.GetHash())
305 func (sm *SyncManager) handleTransactionMsg(peer *peer, msg *TransactionMessage) {
306 tx, err := msg.GetTransaction()
308 sm.peers.addBanScore(peer.ID(), 0, 10, "fail on get tx from message")
312 if isOrphan, err := sm.chain.ValidateTx(tx); err != nil && isOrphan == false {
313 sm.peers.addBanScore(peer.ID(), 10, 0, "fail on validate tx transaction")
317 func (sm *SyncManager) processMsg(basePeer BasePeer, msgType byte, msg BlockchainMessage) {
318 peer := sm.peers.getPeer(basePeer.ID())
319 if peer == nil && msgType != StatusResponseByte && msgType != StatusRequestByte {
323 switch msg := msg.(type) {
324 case *GetBlockMessage:
325 sm.handleGetBlockMsg(peer, msg)
328 sm.handleBlockMsg(peer, msg)
330 case *StatusRequestMessage:
331 sm.handleStatusRequestMsg(basePeer)
333 case *StatusResponseMessage:
334 sm.handleStatusResponseMsg(basePeer, msg)
336 case *TransactionMessage:
337 sm.handleTransactionMsg(peer, msg)
339 case *MineBlockMessage:
340 sm.handleMineBlockMsg(peer, msg)
342 case *GetHeadersMessage:
343 sm.handleGetHeadersMsg(peer, msg)
345 case *HeadersMessage:
346 sm.handleHeadersMsg(peer, msg)
348 case *GetBlocksMessage:
349 sm.handleGetBlocksMsg(peer, msg)
352 sm.handleBlocksMsg(peer, msg)
354 case *FilterLoadMessage:
355 sm.handleFilterLoadMsg(peer, msg)
357 case *FilterClearMessage:
358 sm.handleFilterClearMsg(peer)
360 case *GetMerkleBlockMessage:
361 sm.handleGetMerkleBlockMsg(peer, msg)
364 log.Errorf("unknown message type %v", reflect.TypeOf(msg))
369 func protocolAndAddress(listenAddr string) (string, string) {
370 p, address := "tcp", listenAddr
371 parts := strings.SplitN(address, "://", 2)
373 p, address = parts[0], parts[1]
378 func (sm *SyncManager) makeNodeInfo(listenerStatus bool) *p2p.NodeInfo {
379 nodeInfo := &p2p.NodeInfo{
380 PubKey: sm.privKey.PubKey().Unwrap().(crypto.PubKeyEd25519),
381 Moniker: sm.config.Moniker,
382 Network: sm.config.ChainID,
383 Version: version.Version,
384 Other: []string{strconv.FormatUint(uint64(consensus.DefaultServices), 10)},
387 if !sm.sw.IsListening() {
391 p2pListener := sm.sw.Listeners()[0]
393 // We assume that the rpcListener has the same ExternalAddress.
394 // This is probably true because both P2P and RPC listeners use UPnP,
395 // except of course if the rpc is only bound to localhost
397 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.ExternalAddress().IP.String(), p2pListener.ExternalAddress().Port)
399 nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pListener.InternalAddress().IP.String(), p2pListener.InternalAddress().Port)
404 //Start start sync manager service
405 func (sm *SyncManager) Start() {
406 if _, err := sm.sw.Start(); err != nil {
407 cmn.Exit(cmn.Fmt("fail on start SyncManager: %v", err))
409 // broadcast transactions
410 go sm.txBroadcastLoop()
411 go sm.minedBroadcastLoop()
415 //Stop stop sync manager
416 func (sm *SyncManager) Stop() {
421 func initDiscover(config *cfg.Config, priv *crypto.PrivKeyEd25519, port uint16) (*discover.Network, error) {
422 addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort("0.0.0.0", strconv.FormatUint(uint64(port), 10)))
427 conn, err := net.ListenUDP("udp", addr)
432 realaddr := conn.LocalAddr().(*net.UDPAddr)
433 ntab, err := discover.ListenUDP(priv, conn, realaddr, path.Join(config.DBDir(), "discover.db"), nil)
438 // add the seeds node to the discover table
439 if config.P2P.Seeds == "" {
442 nodes := []*discover.Node{}
443 for _, seed := range strings.Split(config.P2P.Seeds, ",") {
444 version.Status.AddSeed(seed)
445 url := "enode://" + hex.EncodeToString(crypto.Sha256([]byte(seed))) + "@" + seed
446 nodes = append(nodes, discover.MustParseNode(url))
448 if err = ntab.SetFallbackNodes(nodes); err != nil {
454 func (sm *SyncManager) minedBroadcastLoop() {
457 case blockHash := <-sm.newBlockCh:
458 block, err := sm.chain.GetBlockByHash(blockHash)
460 log.Errorf("Failed on mined broadcast loop get block %v", err)
463 if err := sm.peers.broadcastMinedBlock(block); err != nil {
464 log.Errorf("Broadcast mine block error. %v", err)