--- /dev/null
+package monitor
+
+import (
+ "fmt"
+ "os"
+ "os/user"
+ "path"
+ "strings"
+
+ "github.com/jinzhu/gorm"
+ log "github.com/sirupsen/logrus"
+
+ vaporCfg "github.com/vapor/config"
+ "github.com/vapor/crypto/ed25519/chainkd"
+ dbm "github.com/vapor/database/leveldb"
+ "github.com/vapor/event"
+ "github.com/vapor/netsync/chainmgr"
+ "github.com/vapor/netsync/consensusmgr"
+ "github.com/vapor/netsync/peers"
+ "github.com/vapor/p2p"
+ "github.com/vapor/p2p/discover/dht"
+ "github.com/vapor/p2p/discover/mdns"
+ "github.com/vapor/p2p/signlib"
+ "github.com/vapor/test/mock"
+ "github.com/vapor/toolbar/precognitive/config"
+)
+
+type monitor struct {
+ cfg *config.Config
+ db *gorm.DB
+ nodeCfg *vaporCfg.Config
+ sw *p2p.Switch
+ privKey chainkd.XPrv
+ chain *mock.Chain
+ txPool *mock.Mempool
+ bestHeightSeen uint64
+ peers *peers.PeerSet
+}
+
+func NewMonitor(cfg *config.Config, db *gorm.DB) *monitor {
+ dbPath, err := makePath()
+ if err != nil {
+ log.WithFields(log.Fields{"err": err}).Fatal("makePath")
+ }
+
+ nodeCfg := &vaporCfg.Config{
+ BaseConfig: vaporCfg.DefaultBaseConfig(),
+ P2P: vaporCfg.DefaultP2PConfig(),
+ Federation: vaporCfg.DefaultFederationConfig(),
+ }
+ nodeCfg.DBPath = dbPath
+ nodeCfg.ChainID = "mainnet"
+ privKey, err := signlib.NewPrivKey()
+ if err != nil {
+ log.WithFields(log.Fields{"err": err}).Fatal("NewPrivKey")
+ }
+
+ chain, txPool, err := mockChainAndPool()
+ if err != nil {
+ log.WithFields(log.Fields{"err": err}).Fatal("mockChainAndPool")
+ }
+
+ return &monitor{
+ cfg: cfg,
+ db: db,
+ nodeCfg: nodeCfg,
+ privKey: privKey.(chainkd.XPrv),
+ chain: chain,
+ txPool: txPool,
+ bestHeightSeen: uint64(0),
+ }
+}
+
+func makePath() (string, error) {
+ usr, err := user.Current()
+ if err != nil {
+ return "", err
+ }
+
+ dataPath := path.Join(usr.HomeDir, "/.vapor_precog")
+ if err := os.MkdirAll(dataPath, os.ModePerm); err != nil {
+ return "", err
+ }
+
+ return dataPath, nil
+}
+
+func (m *monitor) Run() {
+ if err := m.makeSwitch(); err != nil {
+ log.WithFields(log.Fields{"err": err}).Fatal("makeSwitch")
+ }
+
+ go m.discoveryRoutine()
+ go m.connectionRoutine()
+}
+
+func (m *monitor) makeSwitch() error {
+ var seeds []string
+ for _, node := range m.cfg.Nodes {
+ seeds = append(seeds, fmt.Sprintf("%s:%d", node.IP, node.Port))
+ }
+ m.nodeCfg.P2P.Seeds = strings.Join(seeds, ",")
+
+ l, listenAddr := p2p.GetListener(m.nodeCfg.P2P)
+ discv, err := dht.NewDiscover(m.nodeCfg, m.privKey, l.ExternalAddress().Port, m.cfg.NetworkID)
+ if err != nil {
+ return err
+ }
+
+ // no need for lanDiscv, but passing &mdns.LANDiscover{} will cause NilPointer
+ lanDiscv := mdns.NewLANDiscover(mdns.NewProtocol(), int(l.ExternalAddress().Port))
+ m.sw, err = p2p.NewSwitch(m.nodeCfg, discv, lanDiscv, l, m.privKey, listenAddr, m.cfg.NetworkID)
+ if err != nil {
+ return err
+ }
+
+ m.peers = peers.NewPeerSet(m.sw)
+ return m.prepareReactors()
+}
+
+func (m *monitor) prepareReactors() error {
+ dispatcher := event.NewDispatcher()
+ // add ConsensusReactor for consensusChannel
+ _ = consensusmgr.NewManager(m.sw, m.chain, m.peers, dispatcher)
+ fastSyncDB := dbm.NewDB("fastsync", m.nodeCfg.DBBackend, m.nodeCfg.DBDir())
+ // add ProtocolReactor to handle msgs
+ if _, err := chainmgr.NewManager(m.nodeCfg, m.sw, m.chain, m.txPool, dispatcher, m.peers, fastSyncDB); err != nil {
+ return err
+ }
+
+ for label, reactor := range m.sw.GetReactors() {
+ log.WithFields(log.Fields{"label": label, "reactor": reactor}).Debug("start reactor")
+ if _, err := reactor.Start(); err != nil {
+ return err
+ }
+ }
+
+ m.sw.GetSecurity().RegisterFilter(m.sw.GetNodeInfo())
+ m.sw.GetSecurity().RegisterFilter(m.sw.GetPeers())
+ return m.sw.GetSecurity().Start()
+}