7 log "github.com/sirupsen/logrus"
9 cfg "github.com/vapor/config"
10 "github.com/vapor/consensus"
11 "github.com/vapor/event"
12 msgs "github.com/vapor/netsync/messages"
13 "github.com/vapor/netsync/peers"
14 "github.com/vapor/p2p"
15 core "github.com/vapor/protocol"
16 "github.com/vapor/protocol/bc"
17 "github.com/vapor/protocol/bc/types"
24 // Chain is the interface for Bytom core
25 type Chain interface {
26 BestBlockHeader() *types.BlockHeader
27 BestBlockHeight() uint64
28 GetBlockByHash(*bc.Hash) (*types.Block, error)
29 GetBlockByHeight(uint64) (*types.Block, error)
30 GetHeaderByHash(*bc.Hash) (*types.BlockHeader, error)
31 GetHeaderByHeight(uint64) (*types.BlockHeader, error)
32 GetTransactionStatus(*bc.Hash) (*bc.TransactionStatus, error)
33 InMainChain(bc.Hash) bool
34 ProcessBlock(*types.Block) (bool, error)
35 ValidateTx(*types.Tx) (bool, error)
38 type Switch interface {
39 AddReactor(name string, reactor p2p.Reactor) p2p.Reactor
40 AddBannedPeer(string) error
44 DialPeerWithAddress(addr *p2p.NetAddress) error
48 //ChainManager is responsible for the business layer information synchronization
49 type ChainManager struct {
53 blockKeeper *blockKeeper
56 txSyncCh chan *txSyncMsg
57 quitSync chan struct{}
60 eventDispatcher *event.Dispatcher
61 txMsgSub *event.Subscription
64 //NewChainManager create a chain sync manager.
65 func NewChainManager(config *cfg.Config, sw Switch, chain Chain, txPool *core.TxPool, dispatcher *event.Dispatcher, peers *peers.PeerSet) (*ChainManager, error) {
66 manager := &ChainManager{
70 blockKeeper: newBlockKeeper(chain, peers),
72 txSyncCh: make(chan *txSyncMsg),
73 quitSync: make(chan struct{}),
75 eventDispatcher: dispatcher,
78 if !config.VaultMode {
79 protocolReactor := NewProtocolReactor(manager)
80 manager.sw.AddReactor("PROTOCOL", protocolReactor)
85 func (cm *ChainManager) AddPeer(peer peers.BasePeer) {
86 cm.peers.AddPeer(peer)
89 //IsCaughtUp check wheather the peer finish the sync
90 func (cm *ChainManager) IsCaughtUp() bool {
91 peer := cm.peers.BestPeer(consensus.SFFullNode)
92 return peer == nil || peer.Height() <= cm.chain.BestBlockHeight()
95 func (cm *ChainManager) handleBlockMsg(peer *peers.Peer, msg *msgs.BlockMessage) {
96 block, err := msg.GetBlock()
100 cm.blockKeeper.processBlock(peer.ID(), block)
103 func (cm *ChainManager) handleBlocksMsg(peer *peers.Peer, msg *msgs.BlocksMessage) {
104 blocks, err := msg.GetBlocks()
106 log.WithFields(log.Fields{"module": logModule, "err": err}).Debug("fail on handleBlocksMsg GetBlocks")
110 cm.blockKeeper.processBlocks(peer.ID(), blocks)
113 func (cm *ChainManager) handleFilterAddMsg(peer *peers.Peer, msg *msgs.FilterAddMessage) {
114 peer.AddFilterAddress(msg.Address)
117 func (cm *ChainManager) handleFilterClearMsg(peer *peers.Peer) {
121 func (cm *ChainManager) handleFilterLoadMsg(peer *peers.Peer, msg *msgs.FilterLoadMessage) {
122 peer.AddFilterAddresses(msg.Addresses)
125 func (cm *ChainManager) handleGetBlockMsg(peer *peers.Peer, msg *msgs.GetBlockMessage) {
126 var block *types.Block
129 block, err = cm.chain.GetBlockByHeight(msg.Height)
131 block, err = cm.chain.GetBlockByHash(msg.GetHash())
134 log.WithFields(log.Fields{"module": logModule, "err": err}).Warning("fail on handleGetBlockMsg get block from chain")
138 ok, err := peer.SendBlock(block)
140 cm.peers.RemovePeer(peer.ID())
143 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on handleGetBlockMsg sentBlock")
147 func (cm *ChainManager) handleGetBlocksMsg(peer *peers.Peer, msg *msgs.GetBlocksMessage) {
148 blocks, err := cm.blockKeeper.locateBlocks(msg.GetBlockLocator(), msg.GetStopHash())
149 if err != nil || len(blocks) == 0 {
154 sendBlocks := []*types.Block{}
155 for _, block := range blocks {
156 rawData, err := block.MarshalText()
158 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on handleGetBlocksMsg marshal block")
162 if totalSize+len(rawData) > msgs.MaxBlockchainResponseSize/2 {
165 totalSize += len(rawData)
166 sendBlocks = append(sendBlocks, block)
169 ok, err := peer.SendBlocks(sendBlocks)
171 cm.peers.RemovePeer(peer.ID())
174 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on handleGetBlocksMsg sentBlock")
178 func (cm *ChainManager) handleGetHeadersMsg(peer *peers.Peer, msg *msgs.GetHeadersMessage) {
179 headers, err := cm.blockKeeper.locateHeaders(msg.GetBlockLocator(), msg.GetStopHash())
180 if err != nil || len(headers) == 0 {
181 log.WithFields(log.Fields{"module": logModule, "err": err}).Debug("fail on handleGetHeadersMsg locateHeaders")
185 ok, err := peer.SendHeaders(headers)
187 cm.peers.RemovePeer(peer.ID())
190 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on handleGetHeadersMsg sentBlock")
194 func (cm *ChainManager) handleGetMerkleBlockMsg(peer *peers.Peer, msg *msgs.GetMerkleBlockMessage) {
196 var block *types.Block
198 block, err = cm.chain.GetBlockByHeight(msg.Height)
200 block, err = cm.chain.GetBlockByHash(msg.GetHash())
203 log.WithFields(log.Fields{"module": logModule, "err": err}).Warning("fail on handleGetMerkleBlockMsg get block from chain")
207 blockHash := block.Hash()
208 txStatus, err := cm.chain.GetTransactionStatus(&blockHash)
210 log.WithFields(log.Fields{"module": logModule, "err": err}).Warning("fail on handleGetMerkleBlockMsg get transaction status")
214 ok, err := peer.SendMerkleBlock(block, txStatus)
216 log.WithFields(log.Fields{"module": logModule, "err": err}).Error("fail on handleGetMerkleBlockMsg sentMerkleBlock")
221 cm.peers.RemovePeer(peer.ID())
225 func (cm *ChainManager) handleHeadersMsg(peer *peers.Peer, msg *msgs.HeadersMessage) {
226 headers, err := msg.GetHeaders()
228 log.WithFields(log.Fields{"module": logModule, "err": err}).Debug("fail on handleHeadersMsg GetHeaders")
232 cm.blockKeeper.processHeaders(peer.ID(), headers)
235 func (cm *ChainManager) handleStatusMsg(basePeer peers.BasePeer, msg *msgs.StatusMessage) {
236 if peer := cm.peers.GetPeer(basePeer.ID()); peer != nil {
237 peer.SetStatus(msg.Height, msg.GetHash())
242 func (cm *ChainManager) handleTransactionMsg(peer *peers.Peer, msg *msgs.TransactionMessage) {
243 tx, err := msg.GetTransaction()
245 cm.peers.AddBanScore(peer.ID(), 0, 10, "fail on get tx from message")
249 if isOrphan, err := cm.chain.ValidateTx(tx); err != nil && err != core.ErrDustTx && !isOrphan {
250 cm.peers.AddBanScore(peer.ID(), 10, 0, "fail on validate tx transaction")
252 cm.peers.MarkTx(peer.ID(), tx.ID)
255 func (cm *ChainManager) handleTransactionsMsg(peer *peers.Peer, msg *msgs.TransactionsMessage) {
256 txs, err := msg.GetTransactions()
258 cm.peers.AddBanScore(peer.ID(), 0, 20, "fail on get txs from message")
262 if len(txs) > msgs.TxsMsgMaxTxNum {
263 cm.peers.AddBanScore(peer.ID(), 20, 0, "exceeded the maximum tx number limit")
267 for _, tx := range txs {
268 if isOrphan, err := cm.chain.ValidateTx(tx); err != nil && !isOrphan {
269 cm.peers.AddBanScore(peer.ID(), 10, 0, "fail on validate tx transaction")
272 cm.peers.MarkTx(peer.ID(), tx.ID)
276 func (cm *ChainManager) processMsg(basePeer peers.BasePeer, msgType byte, msg msgs.BlockchainMessage) {
277 peer := cm.peers.GetPeer(basePeer.ID())
282 log.WithFields(log.Fields{
284 "peer": basePeer.Addr(),
285 "type": reflect.TypeOf(msg),
286 "message": msg.String(),
287 }).Info("receive message from peer")
289 switch msg := msg.(type) {
290 case *msgs.GetBlockMessage:
291 cm.handleGetBlockMsg(peer, msg)
293 case *msgs.BlockMessage:
294 cm.handleBlockMsg(peer, msg)
296 case *msgs.StatusMessage:
297 cm.handleStatusMsg(basePeer, msg)
299 case *msgs.TransactionMessage:
300 cm.handleTransactionMsg(peer, msg)
302 case *msgs.TransactionsMessage:
303 cm.handleTransactionsMsg(peer, msg)
305 case *msgs.GetHeadersMessage:
306 cm.handleGetHeadersMsg(peer, msg)
308 case *msgs.HeadersMessage:
309 cm.handleHeadersMsg(peer, msg)
311 case *msgs.GetBlocksMessage:
312 cm.handleGetBlocksMsg(peer, msg)
314 case *msgs.BlocksMessage:
315 cm.handleBlocksMsg(peer, msg)
317 case *msgs.FilterLoadMessage:
318 cm.handleFilterLoadMsg(peer, msg)
320 case *msgs.FilterAddMessage:
321 cm.handleFilterAddMsg(peer, msg)
323 case *msgs.FilterClearMessage:
324 cm.handleFilterClearMsg(peer)
326 case *msgs.GetMerkleBlockMessage:
327 cm.handleGetMerkleBlockMsg(peer, msg)
330 log.WithFields(log.Fields{
332 "peer": basePeer.Addr(),
333 "message_type": reflect.TypeOf(msg),
334 }).Error("unhandled message type")
338 func (cm *ChainManager) RemovePeer(peerID string) {
339 cm.peers.RemovePeer(peerID)
342 func (cm *ChainManager) SendStatus(peer peers.BasePeer) error {
343 p := cm.peers.GetPeer(peer.ID())
345 return errors.New("invalid peer")
348 if err := p.SendStatus(cm.chain.BestBlockHeader()); err != nil {
349 cm.peers.RemovePeer(p.ID())
355 func (cm *ChainManager) Start() error {
357 cm.txMsgSub, err = cm.eventDispatcher.Subscribe(core.TxMsgEvent{})
362 // broadcast transactions
363 go cm.txBroadcastLoop()
369 //Stop stop sync manager
370 func (cm *ChainManager) Stop() {