14 "github.com/jinzhu/gorm"
15 log "github.com/sirupsen/logrus"
16 // dbm "github.com/vapor/database/leveldb"
18 vaporCfg "github.com/vapor/config"
19 "github.com/vapor/consensus"
20 "github.com/vapor/crypto/ed25519/chainkd"
21 dbm "github.com/vapor/database/leveldb"
22 "github.com/vapor/event"
23 "github.com/vapor/p2p"
24 // conn "github.com/vapor/p2p/connection"
25 "github.com/vapor/netsync/peers"
26 // "github.com/vapor/consensus"
27 // "github.com/vapor/crypto/sha3pool"
28 "github.com/vapor/netsync/chainmgr"
29 "github.com/vapor/netsync/consensusmgr"
30 "github.com/vapor/p2p/discover/dht"
31 "github.com/vapor/p2p/discover/mdns"
32 "github.com/vapor/p2p/signlib"
33 "github.com/vapor/test/mock"
34 "github.com/vapor/toolbar/precog/config"
35 "github.com/vapor/toolbar/precog/database/orm"
46 nodeCfg *vaporCfg.Config
48 discvCh chan *dht.Node
54 // TODO: set myself as SPV?
55 func NewMonitor(cfg *config.Config, db *gorm.DB) *monitor {
57 cfg.CheckFreqSeconds = 1
59 tmpDir, err := ioutil.TempDir(".", "vpPrecog")
61 log.Fatalf("failed to create temporary data folder: %v", err)
64 nodeCfg := &vaporCfg.Config{
65 BaseConfig: vaporCfg.DefaultBaseConfig(),
66 P2P: vaporCfg.DefaultP2PConfig(),
67 Federation: vaporCfg.DefaultFederationConfig(),
69 nodeCfg.DBPath = tmpDir
70 nodeCfg.ChainID = "mainnet"
71 discvCh := make(chan *dht.Node)
72 privKey, err := signlib.NewPrivKey()
77 chain, txPool, err := mockChainAndPool()
87 privKey: privKey.(chainkd.XPrv),
93 func (m *monitor) Run() {
94 defer os.RemoveAll(m.nodeCfg.DBPath)
97 for _, node := range m.cfg.Nodes {
98 seeds = append(seeds, fmt.Sprintf("%s:%d", node.Host, node.Port))
99 if err := m.upSertNode(&node); err != nil {
103 m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
104 if err := m.makeSwitch(); err != nil {
108 go m.discoveryRoutine()
109 go m.collectDiscoveredNodes()
110 go m.connectNodesRoutine()
111 go m.checkStatusRoutine()
114 // create or update: https://github.com/jinzhu/gorm/issues/1307
115 func (m *monitor) upSertNode(node *config.Node) error {
116 if node.XPub != nil {
117 node.PublicKey = fmt.Sprintf("%v", node.XPub.PublicKey().String())
120 ormNode := &orm.Node{PublicKey: node.PublicKey}
121 if err := m.db.Where(&orm.Node{PublicKey: node.PublicKey}).First(ormNode).Error; err != nil && err != gorm.ErrRecordNotFound {
125 if node.Alias != "" {
126 ormNode.Alias = node.Alias
128 if node.XPub != nil {
129 ormNode.Xpub = node.XPub.String()
131 ormNode.Host = node.Host
132 ormNode.Port = node.Port
133 return m.db.Where(&orm.Node{PublicKey: ormNode.PublicKey}).
136 Alias: ormNode.Alias,
139 }).FirstOrCreate(ormNode).Error
142 func (m *monitor) makeSwitch() error {
143 l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
144 discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
149 // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
150 lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
151 sw, err := p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
160 func (m *monitor) discoveryRoutine() {
161 ticker := time.NewTicker(time.Duration(discvFreqSec) * time.Second)
163 nodes := make([]*dht.Node, nodesToDiscv)
164 n := m.sw.GetDiscv().ReadRandomNodes(nodes)
165 for i := 0; i < n; i++ {
166 m.discvCh <- nodes[i]
171 func (m *monitor) collectDiscoveredNodes() {
172 // nodeMap maps a node's public key to the node itself
173 nodeMap := make(map[string]*dht.Node)
174 for node := range m.discvCh {
175 if n, ok := nodeMap[node.ID.String()]; ok && n.String() == node.String() {
178 log.Info("discover new node: ", node)
180 if err := m.upSertNode(&config.Node{
181 PublicKey: node.ID.String(),
182 Host: node.IP.String(),
188 nodeMap[node.ID.String()] = node
192 func (m *monitor) connectNodesRoutine() {
193 // TODO: change name?
194 ticker := time.NewTicker(time.Duration(m.cfg.CheckFreqSeconds) * time.Second)
195 for ; true; <-ticker.C {
196 if err := m.dialNodes(); err != nil {
202 func (m *monitor) dialNodes() error {
203 var nodes []*orm.Node
204 if err := m.db.Model(&orm.Node{}).Find(&nodes).Error; err != nil {
208 addresses := make([]*p2p.NetAddress, 0)
209 for i := 0; i < len(nodes); i++ {
210 ips, err := net.LookupIP(nodes[i].Host)
216 log.Errorf("fail to look up ip for %s", nodes[i].Host)
220 address := p2p.NewNetAddressIPPort(ips[0], nodes[i].Port)
221 addresses = append(addresses, address)
224 m.sw.DialPeers(addresses)
228 func (m *monitor) checkStatusRoutine() {
229 dispatcher := event.NewDispatcher()
230 peers := peers.NewPeerSet(m.sw)
231 // add ConsensusReactor for consensusChannel
232 _ = consensusmgr.NewManager(m.sw, m.chain, peers, dispatcher)
233 fastSyncDB := dbm.NewDB("fastsync", m.nodeCfg.DBBackend, m.nodeCfg.DBDir())
234 // add ProtocolReactor to handle msgs
235 _, err := chainmgr.NewManager(m.nodeCfg, m.sw, m.chain, m.txPool, dispatcher, peers, fastSyncDB)
240 // TODO: clean up?? only start reactors??
243 // for label, reactor := range m.sw.GetReactors() {
244 // log.Debug("start reactor: (%s:%v)", label, reactor)
245 // if _, err := reactor.Start(); err != nil {
250 // m.sw.GetSecurity().RegisterFilter(m.sw.GetNodeInfo())
251 // m.sw.GetSecurity().RegisterFilter(m.sw.GetPeers())
252 // if err := m.sw.GetSecurity().Start(); err != nil {
256 ticker := time.NewTicker(time.Duration(m.cfg.CheckFreqSeconds) * time.Second)
257 for ; true; <-ticker.C {
258 for _, v := range m.sw.GetReactors() {
259 for _, peer := range m.sw.GetPeers().List() {
260 log.Debug("AddPeer for", v, peer)
261 // TODO: if not in sw
267 log.Debug("best", peers.BestPeer(consensus.SFFullNode))
268 for _, peerInfo := range peers.GetPeerInfos() {
275 // implement logic first, and then refactor
276 // /home/gavin/work/go/src/github.com/vapor/
278 // p2p/switch_test.go
280 // TODO: get lantency
281 // TODO: get best_height
282 // TODO: decide check_height("best best_height" - "confirmations")
283 // TODO: get blockhash by check_height, get latency
284 // TODO: update lantency, active_time and status