11 "github.com/jinzhu/gorm"
12 log "github.com/sirupsen/logrus"
14 vaporCfg "github.com/vapor/config"
15 "github.com/vapor/crypto/ed25519/chainkd"
16 dbm "github.com/vapor/database/leveldb"
17 "github.com/vapor/event"
18 "github.com/vapor/netsync/chainmgr"
19 "github.com/vapor/netsync/consensusmgr"
20 "github.com/vapor/netsync/peers"
21 "github.com/vapor/p2p"
22 "github.com/vapor/p2p/discover/dht"
23 "github.com/vapor/p2p/discover/mdns"
24 "github.com/vapor/p2p/signlib"
25 "github.com/vapor/test/mock"
26 "github.com/vapor/toolbar/precog/config"
33 nodeCfg *vaporCfg.Config
38 // discvMap maps a node's public key to the node itself
39 discvMap map[string]*dht.Node
40 discvCh chan *dht.Node
42 // TODO: maybe remove?
43 checkStatusCh chan struct{}
46 // TODO: set myself as SPV?
47 func NewMonitor(cfg *config.Config, db *gorm.DB) *monitor {
49 cfg.CheckFreqSeconds = 15
51 dbPath, err := makePath()
56 nodeCfg := &vaporCfg.Config{
57 BaseConfig: vaporCfg.DefaultBaseConfig(),
58 P2P: vaporCfg.DefaultP2PConfig(),
59 Federation: vaporCfg.DefaultFederationConfig(),
61 nodeCfg.DBPath = dbPath
62 nodeCfg.ChainID = "mainnet"
63 privKey, err := signlib.NewPrivKey()
68 chain, txPool, err := mockChainAndPool()
74 RWMutex: &sync.RWMutex{},
78 privKey: privKey.(chainkd.XPrv),
81 discvMap: make(map[string]*dht.Node),
82 discvCh: make(chan *dht.Node),
83 dialCh: make(chan struct{}, 1),
84 checkStatusCh: make(chan struct{}, 1),
88 func makePath() (string, error) {
89 usr, err := user.Current()
94 dataPath := usr.HomeDir + "/.precog"
95 if err := os.MkdirAll(dataPath, os.ModePerm); err != nil {
99 tmpDir, err := ioutil.TempDir(dataPath, "")
107 func (m *monitor) Run() {
108 defer os.RemoveAll(m.nodeCfg.DBPath)
111 for _, node := range m.cfg.Nodes {
112 seeds = append(seeds, fmt.Sprintf("%s:%d", node.Host, node.Port))
113 if err := m.upSertNode(&node); err != nil {
117 m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
118 if err := m.makeSwitch(); err != nil {
122 m.dialCh <- struct{}{}
123 var discvWg sync.WaitGroup
124 go m.discoveryRoutine(&discvWg)
125 go m.collectDiscoveredNodes(&discvWg)
126 go m.connectNodesRoutine()
127 go m.checkStatusRoutine()
130 func (m *monitor) makeSwitch() error {
131 l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
132 discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
137 // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
138 lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
139 sw, err := p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
148 func (m *monitor) prepareReactors(peers *peers.PeerSet) error {
149 dispatcher := event.NewDispatcher()
150 // add ConsensusReactor for consensusChannel
151 _ = consensusmgr.NewManager(m.sw, m.chain, peers, dispatcher)
152 fastSyncDB := dbm.NewDB("fastsync", m.nodeCfg.DBBackend, m.nodeCfg.DBDir())
153 // add ProtocolReactor to handle msgs
154 _, err := chainmgr.NewManager(m.nodeCfg, m.sw, m.chain, m.txPool, dispatcher, peers, fastSyncDB)
159 for label, reactor := range m.sw.GetReactors() {
160 log.Debugf("start reactor: (%s:%v)", label, reactor)
161 if _, err := reactor.Start(); err != nil {
166 m.sw.GetSecurity().RegisterFilter(m.sw.GetNodeInfo())
167 m.sw.GetSecurity().RegisterFilter(m.sw.GetPeers())
168 return m.sw.GetSecurity().Start()
171 func (m *monitor) checkStatusRoutine() {
172 peers := peers.NewPeerSet(m.sw)
173 if err := m.prepareReactors(peers); err != nil {
177 bestHeight := uint64(0)
178 for range m.checkStatusCh {
179 for _, peer := range m.sw.GetPeers().List() {
183 log.Infof("%d connected peers: %v", len(m.sw.GetPeers().List()), m.sw.GetPeers().List())
185 for _, peer := range m.sw.GetPeers().List() {
186 p := peers.GetPeer(peer.ID())
191 if err := p.SendStatus(m.chain.BestBlockHeader(), m.chain.LastIrreversibleHeader()); err != nil {
193 peers.RemovePeer(p.ID())
197 for _, peerInfo := range peers.GetPeerInfos() {
198 if peerInfo.Height > bestHeight {
199 bestHeight = peerInfo.Height
202 log.Info("bestHeight: ", bestHeight)
203 m.processPeerInfos(peers.GetPeerInfos())
205 for _, peer := range m.sw.GetPeers().List() {
206 p := peers.GetPeer(peer.ID())
211 peers.RemovePeer(p.ID())
213 log.Info("Disonnect all peers.")
215 m.dialCh <- struct{}{}