10 "github.com/jinzhu/gorm"
11 log "github.com/sirupsen/logrus"
13 vaporCfg "github.com/vapor/config"
14 "github.com/vapor/crypto/ed25519/chainkd"
15 dbm "github.com/vapor/database/leveldb"
16 "github.com/vapor/event"
17 "github.com/vapor/netsync/chainmgr"
18 "github.com/vapor/netsync/consensusmgr"
19 "github.com/vapor/netsync/peers"
20 "github.com/vapor/p2p"
21 "github.com/vapor/p2p/discover/dht"
22 "github.com/vapor/p2p/discover/mdns"
23 "github.com/vapor/p2p/signlib"
24 "github.com/vapor/test/mock"
25 "github.com/vapor/toolbar/precog/config"
32 nodeCfg *vaporCfg.Config
37 // discvMap maps a node's public key to the node itself
38 discvMap map[string]*dht.Node
39 discvCh chan *dht.Node
41 // TODO: maybe remove?
42 checkStatusCh chan struct{}
45 // TODO: set myself as SPV?
46 func NewMonitor(cfg *config.Config, db *gorm.DB) *monitor {
48 cfg.CheckFreqSeconds = 15
50 dbPath, err := makePath()
55 nodeCfg := &vaporCfg.Config{
56 BaseConfig: vaporCfg.DefaultBaseConfig(),
57 P2P: vaporCfg.DefaultP2PConfig(),
58 Federation: vaporCfg.DefaultFederationConfig(),
60 nodeCfg.DBPath = dbPath
61 nodeCfg.ChainID = "mainnet"
62 privKey, err := signlib.NewPrivKey()
67 chain, txPool, err := mockChainAndPool()
73 RWMutex: &sync.RWMutex{},
77 privKey: privKey.(chainkd.XPrv),
80 discvMap: make(map[string]*dht.Node),
81 discvCh: make(chan *dht.Node),
82 dialCh: make(chan struct{}, 1),
83 checkStatusCh: make(chan struct{}, 1),
87 func makePath() (string, error) {
88 usr, err := user.Current()
93 dataPath := usr.HomeDir + "/.precog"
94 if err := os.MkdirAll(dataPath, os.ModePerm); err != nil {
101 func (m *monitor) Run() {
102 defer os.RemoveAll(m.nodeCfg.DBPath)
105 for _, node := range m.cfg.Nodes {
106 seeds = append(seeds, fmt.Sprintf("%s:%d", node.Host, node.Port))
107 if err := m.upSertNode(&node); err != nil {
111 m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
112 if err := m.makeSwitch(); err != nil {
116 m.dialCh <- struct{}{}
117 var discvWg sync.WaitGroup
118 go m.discoveryRoutine(&discvWg)
119 go m.collectDiscoveredNodes(&discvWg)
120 go m.connectNodesRoutine()
121 go m.checkStatusRoutine()
124 func (m *monitor) makeSwitch() error {
125 l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
126 discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
131 // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
132 lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
133 sw, err := p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
142 func (m *monitor) prepareReactors(peers *peers.PeerSet) error {
143 dispatcher := event.NewDispatcher()
144 // add ConsensusReactor for consensusChannel
145 _ = consensusmgr.NewManager(m.sw, m.chain, peers, dispatcher)
146 fastSyncDB := dbm.NewDB("fastsync", m.nodeCfg.DBBackend, m.nodeCfg.DBDir())
147 // add ProtocolReactor to handle msgs
148 _, err := chainmgr.NewManager(m.nodeCfg, m.sw, m.chain, m.txPool, dispatcher, peers, fastSyncDB)
153 for label, reactor := range m.sw.GetReactors() {
154 log.Debugf("start reactor: (%s:%v)", label, reactor)
155 if _, err := reactor.Start(); err != nil {
160 m.sw.GetSecurity().RegisterFilter(m.sw.GetNodeInfo())
161 m.sw.GetSecurity().RegisterFilter(m.sw.GetPeers())
162 return m.sw.GetSecurity().Start()
165 func (m *monitor) checkStatusRoutine() {
166 peers := peers.NewPeerSet(m.sw)
167 if err := m.prepareReactors(peers); err != nil {
171 bestHeight := uint64(0)
172 for range m.checkStatusCh {
173 for _, peer := range m.sw.GetPeers().List() {
177 log.Infof("%d connected peers: %v", len(m.sw.GetPeers().List()), m.sw.GetPeers().List())
179 for _, peer := range m.sw.GetPeers().List() {
180 p := peers.GetPeer(peer.ID())
185 if err := p.SendStatus(m.chain.BestBlockHeader(), m.chain.LastIrreversibleHeader()); err != nil {
187 peers.RemovePeer(p.ID())
191 for _, peerInfo := range peers.GetPeerInfos() {
192 if peerInfo.Height > bestHeight {
193 bestHeight = peerInfo.Height
196 log.Info("bestHeight: ", bestHeight)
197 m.processPeerInfos(peers.GetPeerInfos())
199 for _, peer := range m.sw.GetPeers().List() {
200 p := peers.GetPeer(peer.ID())
205 peers.RemovePeer(p.ID())
207 log.Info("Disonnect all peers.")
209 m.dialCh <- struct{}{}