toolbar/precog/monitor/connection.go

   1 package monitor
   2
   3 import (
   4         "net"
   5         "time"
   6
   7         log "github.com/sirupsen/logrus"
   8         "github.com/vapor/p2p"
   9         "github.com/vapor/toolbar/precog/database/orm"
  10 )
  11
  12 func (m *monitor) connectNodesRoutine() {
  13         ticker := time.NewTicker(time.Duration(m.cfg.CheckFreqSeconds) * time.Second)
  14         for ; true; <-ticker.C {
  15                 <-m.dialCh
  16                 if err := m.dialNodes(); err != nil {
  17                         log.Error(err)
  18                 }
  19         }
  20 }
  21
  22 func (m *monitor) dialNodes() error {
  23         log.Info("Start to reconnect to nodes...")
  24         var nodes []*orm.Node
  25         if err := m.db.Model(&orm.Node{}).Find(&nodes).Error; err != nil {
  26                 return err
  27         }
  28
  29         addresses := make([]*p2p.NetAddress, 0)
  30         for i := 0; i < len(nodes); i++ {
  31                 ips, err := net.LookupIP(nodes[i].Host)
  32                 if err != nil {
  33                         log.Error(err)
  34                         continue
  35                 }
  36                 if len(ips) == 0 {
  37                         log.Errorf("fail to look up ip for %s", nodes[i].Host)
  38                         continue
  39                 }
  40
  41                 address := p2p.NewNetAddressIPPort(ips[0], nodes[i].Port)
  42                 addresses = append(addresses, address)
  43         }
  44
  45         // connected peers will be skipped in switch.DialPeers()
  46         m.sw.DialPeers(addresses)
  47         log.Info("DialPeers done.")
  48         m.processDialResult()
  49         m.checkStatusCh <- struct{}{}
  50         return nil
  51 }