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 // TODO: need to fix temp and "discover"
89 func makePath() (string, error) {
90 usr, err := user.Current()
95 dataPath := usr.HomeDir + "/.precog"
96 if err := os.MkdirAll(dataPath, os.ModePerm); err != nil {
100 tmpDir, err := ioutil.TempDir(dataPath, "")
108 func (m *monitor) Run() {
109 defer os.RemoveAll(m.nodeCfg.DBPath)
112 for _, node := range m.cfg.Nodes {
113 seeds = append(seeds, fmt.Sprintf("%s:%d", node.Host, node.Port))
114 if err := m.upSertNode(&node); err != nil {
118 m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
119 if err := m.makeSwitch(); err != nil {
123 m.dialCh <- struct{}{}
124 var discvWg sync.WaitGroup
125 go m.discoveryRoutine(&discvWg)
126 go m.collectDiscoveredNodes(&discvWg)
127 go m.connectNodesRoutine()
128 go m.checkStatusRoutine()
131 func (m *monitor) makeSwitch() error {
132 l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
133 discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
138 // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
139 lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
140 sw, err := p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
149 func (m *monitor) prepareReactors(peers *peers.PeerSet) error {
150 dispatcher := event.NewDispatcher()
151 // add ConsensusReactor for consensusChannel
152 _ = consensusmgr.NewManager(m.sw, m.chain, peers, dispatcher)
153 fastSyncDB := dbm.NewDB("fastsync", m.nodeCfg.DBBackend, m.nodeCfg.DBDir())
154 // add ProtocolReactor to handle msgs
155 _, err := chainmgr.NewManager(m.nodeCfg, m.sw, m.chain, m.txPool, dispatcher, peers, fastSyncDB)
160 for label, reactor := range m.sw.GetReactors() {
161 log.Debugf("start reactor: (%s:%v)", label, reactor)
162 if _, err := reactor.Start(); err != nil {
167 m.sw.GetSecurity().RegisterFilter(m.sw.GetNodeInfo())
168 m.sw.GetSecurity().RegisterFilter(m.sw.GetPeers())
169 return m.sw.GetSecurity().Start()
172 func (m *monitor) checkStatusRoutine() {
173 peers := peers.NewPeerSet(m.sw)
174 if err := m.prepareReactors(peers); err != nil {
178 bestHeight := uint64(0)
179 for range m.checkStatusCh {
180 for _, peer := range m.sw.GetPeers().List() {
184 log.Infof("%d connected peers: %v", len(m.sw.GetPeers().List()), m.sw.GetPeers().List())
186 for _, peer := range m.sw.GetPeers().List() {
187 p := peers.GetPeer(peer.ID())
192 if err := p.SendStatus(m.chain.BestBlockHeader(), m.chain.LastIrreversibleHeader()); err != nil {
194 peers.RemovePeer(p.ID())
198 for _, peerInfo := range peers.GetPeerInfos() {
199 if peerInfo.Height > bestHeight {
200 bestHeight = peerInfo.Height
203 log.Info("bestHeight: ", bestHeight)
204 m.processPeerInfos(peers.GetPeerInfos())
206 for _, peer := range m.sw.GetPeers().List() {
207 p := peers.GetPeer(peer.ID())
212 peers.RemovePeer(p.ID())
214 log.Info("Disonnect all peers.")
216 m.dialCh <- struct{}{}