Golang NetPlugin.AddPeerHost方法代碼示例

func processPeerEvent(netPlugin *plugin.NetPlugin, opts cliOpts,
	peerInfo *drivers.PeerHostState, isDelete bool) (err error) {

	// if this is our own peer info coming back to us, ignore it
	if peerInfo.ID == opts.hostLabel {
		return nil
	}

	nodeInfo := core.ServiceInfo{
		HostAddr: peerInfo.HostAddr,
		Port:     0,
	}

	// take a lock to ensure we are programming one event at a time.
	netPlugin.Lock()
	defer func() { netPlugin.Unlock() }()

	operStr := ""
	if isDelete {
		err = netPlugin.DeletePeerHost(nodeInfo)
		operStr = "delete"
	} else {
		err = netPlugin.AddPeerHost(nodeInfo)
		operStr = "create"
	}
	if err != nil {
		log.Errorf("PeerHost operation %s failed. Error: %s", operStr, err)
	} else {
		log.Infof("PeerHost operation %s succeeded", operStr)
	}

	return
}

// Main loop to discover peer hosts and masters
func peerDiscoveryLoop(netplugin *plugin.NetPlugin, objdbClient objdb.ObjdbApi) {
	// Create channels for watch thread
	nodeEventCh := make(chan objdb.WatchServiceEvent, 1)
	watchStopCh := make(chan bool, 1)
	masterEventCh := make(chan objdb.WatchServiceEvent, 1)
	masterWatchStopCh := make(chan bool, 1)

	// Get the local address
	localIP, err := objdbClient.GetLocalAddr()
	if err != nil {
		log.Fatalf("Error getting locla IP address. Err: %v", err)
	}

	// Start a watch on netplugin service so that we dont miss any
	err = objdbClient.WatchService("netplugin", nodeEventCh, watchStopCh)
	if err != nil {
		log.Fatalf("Could not start a watch on netplugin service. Err: %v", err)
	}

	// Start a watch on netmaster too
	err = objdbClient.WatchService("netmaster", masterEventCh, masterWatchStopCh)
	if err != nil {
		log.Fatalf("Could not start a watch on netmaster service. Err: %v", err)
	}

	// Get a list of all existing netplugin nodes
	nodeList, err := objdbClient.GetService("netplugin")
	if err != nil {
		log.Errorf("Error getting node list from objdb. Err: %v", err)
	}

	log.Infof("Got netplugin service list: %+v", nodeList)

	// walk each node and add it as a PeerHost
	for _, node := range nodeList {
		// Ignore if its our own info
		if node.HostAddr == localIP {
			continue
		}
		// add the node
		err := netplugin.AddPeerHost(core.ServiceInfo{
			HostAddr: node.HostAddr,
			Port:     ofnet.OFNET_AGENT_PORT,
		})
		if err != nil {
			log.Errorf("Error adding node {%+v}. Err: %v", node, err)
		}
	}

	// Get a list of all existing netmasters
	masterList, err := objdbClient.GetService("netmaster")
	if err != nil {
		log.Errorf("Error getting master list from objdb. Err: %v", err)
	}

	log.Infof("Got netmaster service list: %+v", masterList)

	// Walk each master and add it
	for _, master := range masterList {
		// Add the master
		err := netplugin.AddMaster(core.ServiceInfo{
			HostAddr: master.HostAddr,
			Port:     ofnet.OFNET_MASTER_PORT,
		})
		if err != nil {
			log.Errorf("Error adding master {%+v}. Err: %v", master, err)
		}
	}

	for {
		select {
		case srvEvent := <-nodeEventCh:
			log.Infof("Received netplugin service watch event: %+v", srvEvent)

			// collect the info about the node
			nodeInfo := srvEvent.ServiceInfo

			// check if its our on info coming back to us
			if nodeInfo.HostAddr == localIP {
				break
			}

			// Handle based on event type
			if srvEvent.EventType == objdb.WatchServiceEventAdd {
				log.Infof("Node add event for {%+v}", nodeInfo)

				// add the node
				err := netplugin.AddPeerHost(core.ServiceInfo{
					HostAddr: nodeInfo.HostAddr,
					Port:     ofnet.OFNET_AGENT_PORT,
				})
				if err != nil {
					log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
				}
			} else if srvEvent.EventType == objdb.WatchServiceEventDel {
				log.Infof("Node delete event for {%+v}", nodeInfo)

				// remove the node
				err := netplugin.DeletePeerHost(core.ServiceInfo{
//.........這裏部分代碼省略.........