Golang Path.String方法代碼示例

//modrib receives route updates from BGP server and adds the endpoint
func (self *OfnetBgp) modRib(path *table.Path) error {
	var nlri bgp.AddrPrefixInterface
	var nextHop string
	var macAddrStr string
	var portNo uint32

	nlri = path.GetNlri()
	nextHop = path.GetNexthop().String()

	if nextHop == "0.0.0.0" {
		return nil
	}

	if nlri == nil {
		return fmt.Errorf("no nlri")
	}

	endpointIPNet, _ := netlink.ParseIPNet(nlri.String())
	log.Infof("Bgp Rib Received endpoint update for path %s", path.String())

	//check if bgp published a route local to the host
	epid := self.agent.getEndpointIdByIpVrf(endpointIPNet.IP.Mask(endpointIPNet.Mask), "default")

	//Check if the route is local
	if nextHop == self.routerIP {
		log.Debugf("This is a local route skipping endpoint create! ")
		return nil
	} else if ep := self.agent.getEndpointByID(epid); ep != nil {
		if ep.EndpointType != "external" {
			log.Debugf("Endpoint was learnt via internal protocol. skipping update! ")
			return nil
		}
	}

	nhEpid := self.agent.getEndpointIdByIpVrf(net.ParseIP(nextHop), "default")

	if ep := self.agent.getEndpointByID(nhEpid); ep == nil {
		//the nexthop is not the directly connected eBgp peer
		macAddrStr = ""
		portNo = 0
	} else {
		macAddrStr = ep.MacAddrStr
		portNo = ep.PortNo
	}

	ipmask := net.ParseIP("255.255.255.255").Mask(endpointIPNet.Mask)

	if path.IsWithdraw != true {
		epreg := &OfnetEndpoint{
			EndpointID:   epid,
			EndpointType: "external",
			IpAddr:       endpointIPNet.IP,
			IpMask:       ipmask,
			Vrf:          "default", // FIXME set VRF correctly
			MacAddrStr:   macAddrStr,
			Vlan:         1,
			OriginatorIp: self.agent.localIp,
			PortNo:       portNo,
			Timestamp:    time.Now(),
		}

		// Install the endpoint in datapath
		// First, add the endpoint to local routing table

		self.agent.endpointDb.Set(epreg.EndpointID, epreg)
		err := self.agent.datapath.AddEndpoint(epreg)
		if err != nil {
			log.Errorf("Error adding endpoint: {%+v}. Err: %v", epreg, err)
			return err
		}
	} else {
		log.Info("Received route withdraw from BGP for ", endpointIPNet)
		endpoint := self.agent.getEndpointByIpVrf(endpointIPNet.IP, "default")
		if endpoint != nil {
			self.agent.datapath.RemoveEndpoint(endpoint)
			self.agent.endpointDb.Remove(endpoint.EndpointID)
		}
	}
	return nil
}