13 "github.com/jinzhu/gorm"
14 log "github.com/sirupsen/logrus"
15 // dbm "github.com/vapor/database/leveldb"
17 vaporCfg "github.com/vapor/config"
18 "github.com/vapor/consensus"
19 "github.com/vapor/crypto/ed25519/chainkd"
20 "github.com/vapor/event"
21 "github.com/vapor/p2p"
22 // conn "github.com/vapor/p2p/connection"
23 "github.com/vapor/netsync/peers"
24 // "github.com/vapor/consensus"
25 // "github.com/vapor/crypto/sha3pool"
26 "github.com/vapor/netsync/consensusmgr"
27 "github.com/vapor/p2p/discover/dht"
28 "github.com/vapor/p2p/discover/mdns"
29 "github.com/vapor/p2p/signlib"
30 "github.com/vapor/toolbar/precog/config"
31 "github.com/vapor/toolbar/precog/database/orm"
42 nodeCfg *vaporCfg.Config
44 discvCh chan *dht.Node
48 func NewMonitor(cfg *config.Config, db *gorm.DB) *monitor {
50 cfg.CheckFreqSeconds = 1
52 nodeCfg := &vaporCfg.Config{
53 BaseConfig: vaporCfg.DefaultBaseConfig(),
54 P2P: vaporCfg.DefaultP2PConfig(),
55 Federation: vaporCfg.DefaultFederationConfig(),
57 nodeCfg.DBPath = "vapor_precog_data"
58 nodeCfg.ChainID = "mainnet"
59 discvCh := make(chan *dht.Node)
60 privKey, err := signlib.NewPrivKey()
70 privKey: privKey.(chainkd.XPrv),
74 func (m *monitor) Run() {
75 defer os.RemoveAll(m.nodeCfg.DBPath)
78 for _, node := range m.cfg.Nodes {
79 seeds = append(seeds, fmt.Sprintf("%s:%d", node.Host, node.Port))
80 if err := m.upSertNode(&node); err != nil {
84 m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
85 if err := m.makeSwitch(); err != nil {
89 go m.discoveryRoutine()
90 go m.collectDiscoveredNodes()
91 go m.connectNodesRoutine()
92 go m.checkStatusRoutine()
95 // create or update: https://github.com/jinzhu/gorm/issues/1307
96 func (m *monitor) upSertNode(node *config.Node) error {
98 node.PublicKey = fmt.Sprintf("%v", node.XPub.PublicKey().String())
101 ormNode := &orm.Node{PublicKey: node.PublicKey}
102 if err := m.db.Where(&orm.Node{PublicKey: node.PublicKey}).First(ormNode).Error; err != nil && err != gorm.ErrRecordNotFound {
106 if node.Alias != "" {
107 ormNode.Alias = node.Alias
109 if node.XPub != nil {
110 ormNode.Xpub = node.XPub.String()
112 ormNode.Host = node.Host
113 ormNode.Port = node.Port
114 return m.db.Where(&orm.Node{PublicKey: ormNode.PublicKey}).
117 Alias: ormNode.Alias,
120 }).FirstOrCreate(ormNode).Error
123 func (m *monitor) makeSwitch() error {
124 l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
125 discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
130 // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
131 lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
132 sw, err := p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
141 func (m *monitor) discoveryRoutine() {
142 ticker := time.NewTicker(time.Duration(discvFreqSec) * time.Second)
144 nodes := make([]*dht.Node, nodesToDiscv)
145 n := m.sw.GetDiscv().ReadRandomNodes(nodes)
146 for i := 0; i < n; i++ {
147 m.discvCh <- nodes[i]
152 func (m *monitor) collectDiscoveredNodes() {
153 // nodeMap maps a node's public key to the node itself
154 nodeMap := make(map[string]*dht.Node)
155 for node := range m.discvCh {
156 if n, ok := nodeMap[node.ID.String()]; ok && n.String() == node.String() {
159 log.Info("discover new node: ", node)
161 if err := m.upSertNode(&config.Node{
162 PublicKey: node.ID.String(),
163 Host: node.IP.String(),
169 nodeMap[node.ID.String()] = node
173 func (m *monitor) connectNodesRoutine() {
174 // TODO: change name?
175 ticker := time.NewTicker(time.Duration(m.cfg.CheckFreqSeconds) * time.Second)
176 for ; true; <-ticker.C {
177 if err := m.dialNodes(); err != nil {
183 func (m *monitor) dialNodes() error {
184 var nodes []*orm.Node
185 if err := m.db.Model(&orm.Node{}).Find(&nodes).Error; err != nil {
189 addresses := make([]*p2p.NetAddress, 0)
190 for i := 0; i < len(nodes); i++ {
191 ips, err := net.LookupIP(nodes[i].Host)
197 log.Errorf("fail to look up ip for %s", nodes[i].Host)
201 address := p2p.NewNetAddressIPPort(ips[0], nodes[i].Port)
202 addresses = append(addresses, address)
205 m.sw.DialPeers(addresses)
209 func (m *monitor) checkStatusRoutine() {
211 peers := peers.NewPeerSet(m.sw)
212 dispatcher := event.NewDispatcher()
213 // consensusMgr := consensusmgr.NewManager(sw, chain, peers, dispatcher)
214 consensusMgr := consensusmgr.NewManager(m.sw, nil, peers, dispatcher)
217 // TODO: change name?
218 ticker := time.NewTicker(time.Duration(m.cfg.CheckFreqSeconds) * time.Second)
219 for ; true; <-ticker.C {
220 log.Debug("p2p.peer list", m.sw.GetPeers().List())
222 log.Info("best", peers.BestPeer(consensus.SFFullNode))
227 // implement logic first, and then refactor
228 // /home/gavin/work/go/src/github.com/vapor/
230 // p2p/switch_test.go
234 // TODO: dial nodes, get lantency & best_height
235 // TODO: decide check_height("best best_height" - "confirmations")
236 // TODO: get blockhash by check_height, get latency
237 // TODO: update lantency, active_time and status