func getListenersByLoadBalancerID(client *gophercloud.ServiceClient, id string) ([]listeners.Listener, error) {
	var existingListeners []listeners.Listener
	err := listeners.List(client, listeners.ListOpts{LoadbalancerID: id}).EachPage(func(page pagination.Page) (bool, error) {
		listenerList, err := listeners.ExtractListeners(page)
		if err != nil {
			return false, err
		}
		existingListeners = append(existingListeners, listenerList...)

		return true, nil
	})
	if err != nil {
		return nil, err
	}

	return existingListeners, nil
}

func listListeners(t *testing.T) {
	err := listeners.List(base.Client, listeners.ListOpts{Name: "tmp_listener"}).EachPage(func(page pagination.Page) (bool, error) {
		listenerList, err := listeners.ExtractListeners(page)
		if err != nil {
			t.Errorf("Failed to extract Listeners: %v", err)
			return false, err
		}

		for _, listener := range listenerList {
			t.Logf("Listing Listener: ID [%s] Name [%s] Loadbalancers [%s]",
				listener.ID, listener.Name, listener.Loadbalancers)
		}

		return true, nil
	})

	th.AssertNoErr(t, err)
}

func (lbaas *LbaasV2) UpdateLoadBalancer(clusterName string, service *v1.Service, nodeNames []string) error {
	loadBalancerName := cloudprovider.GetLoadBalancerName(service)
	glog.V(4).Infof("UpdateLoadBalancer(%v, %v, %v)", clusterName, loadBalancerName, nodeNames)

	ports := service.Spec.Ports
	if len(ports) == 0 {
		return fmt.Errorf("no ports provided to openstack load balancer")
	}

	loadbalancer, err := getLoadbalancerByName(lbaas.network, loadBalancerName)
	if err != nil {
		return err
	}
	if loadbalancer == nil {
		return fmt.Errorf("Loadbalancer %s does not exist", loadBalancerName)
	}

	// Get all listeners for this loadbalancer, by "port key".
	type portKey struct {
		Protocol string
		Port     int
	}

	lbListeners := make(map[portKey]listeners.Listener)
	err = listeners.List(lbaas.network, listeners.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		listenersList, err := listeners.ExtractListeners(page)
		if err != nil {
			return false, err
		}
		for _, l := range listenersList {
			for _, lb := range l.Loadbalancers {
				// Double check this Listener belongs to the LB we're updating. Neutron's API filtering
				// can't be counted on in older releases (i.e Liberty).
				if loadbalancer.ID == lb.ID {
					key := portKey{Protocol: l.Protocol, Port: l.ProtocolPort}
					lbListeners[key] = l
					break
				}
			}
		}
		return true, nil
	})
	if err != nil {
		return err
	}

	// Get all pools for this loadbalancer, by listener ID.
	lbPools := make(map[string]v2pools.Pool)
	err = v2pools.List(lbaas.network, v2pools.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		poolsList, err := v2pools.ExtractPools(page)
		if err != nil {
			return false, err
		}
		for _, p := range poolsList {
			for _, l := range p.Listeners {
				// Double check this Pool belongs to the LB we're deleting. Neutron's API filtering
				// can't be counted on in older releases (i.e Liberty).
				for _, val := range lbListeners {
					if val.ID == l.ID {
						lbPools[l.ID] = p
						break
					}
				}
			}
		}
		return true, nil
	})
	if err != nil {
		return err
	}

	// Compose Set of member (addresses) that _should_ exist
	addrs := map[string]empty{}
	for _, nodeName := range nodeNames {
		addr, err := getAddressByName(lbaas.compute, types.NodeName(nodeName))
		if err != nil {
			return err
		}
		addrs[addr] = empty{}
	}

	// Check for adding/removing members associated with each port
	for _, port := range ports {
		// Get listener associated with this port
		listener, ok := lbListeners[portKey{
			Protocol: string(port.Protocol),
			Port:     int(port.Port),
		}]
		if !ok {
			return fmt.Errorf("Loadbalancer %s does not contain required listener for port %d and protocol %s", loadBalancerName, port.Port, port.Protocol)
		}

		// Get pool associated with this listener
		pool, ok := lbPools[listener.ID]
		if !ok {
			return fmt.Errorf("Loadbalancer %s does not contain required pool for listener %s", loadBalancerName, listener.ID)
		}

		// Find existing pool members (by address) for this port
		members := make(map[string]v2pools.Member)
//.........这里部分代码省略.........

func (lbaas *LbaasV2) EnsureLoadBalancerDeleted(clusterName string, service *v1.Service) error {
	loadBalancerName := cloudprovider.GetLoadBalancerName(service)
	glog.V(4).Infof("EnsureLoadBalancerDeleted(%v, %v)", clusterName, loadBalancerName)

	loadbalancer, err := getLoadbalancerByName(lbaas.network, loadBalancerName)
	if err != nil && err != ErrNotFound {
		return err
	}
	if loadbalancer == nil {
		return nil
	}

	if lbaas.opts.FloatingNetworkId != "" && loadbalancer != nil {
		portID, err := getPortIDByIP(lbaas.network, loadbalancer.VipAddress)
		if err != nil {
			return err
		}

		floatingIP, err := getFloatingIPByPortID(lbaas.network, portID)
		if err != nil && err != ErrNotFound {
			return err
		}
		if floatingIP != nil {
			err = floatingips.Delete(lbaas.network, floatingIP.ID).ExtractErr()
			if err != nil && !isNotFound(err) {
				return err
			}
		}
	}

	// get all listeners associated with this loadbalancer
	var listenerIDs []string
	err = listeners.List(lbaas.network, listeners.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		listenerList, err := listeners.ExtractListeners(page)
		if err != nil {
			return false, err
		}

		for _, listener := range listenerList {
			listenerIDs = append(listenerIDs, listener.ID)
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// get all pools (and health monitors) associated with this loadbalancer
	var poolIDs []string
	var monitorIDs []string
	err = v2pools.List(lbaas.network, v2pools.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		poolsList, err := v2pools.ExtractPools(page)
		if err != nil {
			return false, err
		}

		for _, pool := range poolsList {
			poolIDs = append(poolIDs, pool.ID)
			monitorIDs = append(monitorIDs, pool.MonitorID)
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// get all members associated with each poolIDs
	var memberIDs []string
	for _, poolID := range poolIDs {
		err := v2pools.ListAssociateMembers(lbaas.network, poolID, v2pools.MemberListOpts{}).EachPage(func(page pagination.Page) (bool, error) {
			membersList, err := v2pools.ExtractMembers(page)
			if err != nil {
				return false, err
			}

			for _, member := range membersList {
				memberIDs = append(memberIDs, member.ID)
			}

			return true, nil
		})
		if err != nil {
			return err
		}
	}

	// delete all monitors
	for _, monitorID := range monitorIDs {
		err := v2monitors.Delete(lbaas.network, monitorID).ExtractErr()
		if err != nil && !isNotFound(err) {
			return err
		}
		waitLoadbalancerActiveProvisioningStatus(lbaas.network, loadbalancer.ID)
	}

	// delete all members and pools
	for _, poolID := range poolIDs {
		// delete all members for this pool
//.........这里部分代码省略.........

func (lbaas *LbaasV2) EnsureLoadBalancerDeleted(service *api.Service) error {
	loadBalancerName := cloudprovider.GetLoadBalancerName(service)
	glog.V(4).Infof("EnsureLoadBalancerDeleted(%v)", loadBalancerName)

	loadbalancer, err := getLoadbalancerByName(lbaas.network, loadBalancerName)
	if err != nil && err != ErrNotFound {
		return err
	}
	if loadbalancer == nil {
		return nil
	}

	if lbaas.opts.FloatingNetworkId != "" && loadbalancer != nil {
		portID, err := getPortIDByIP(lbaas.network, loadbalancer.VipAddress)
		if err != nil {
			return err
		}

		floatingIP, err := getFloatingIPByPortID(lbaas.network, portID)
		if err != nil && err != ErrNotFound {
			return err
		}
		if floatingIP != nil {
			err = floatingips.Delete(lbaas.network, floatingIP.ID).ExtractErr()
			if err != nil && !isNotFound(err) {
				return err
			}
		}
	}

	// get all listeners associated with this loadbalancer
	var listenerIDs []string
	err = listeners.List(lbaas.network, listeners.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		listenerList, err := listeners.ExtractListeners(page)
		if err != nil {
			return false, err
		}

		for _, listener := range listenerList {
			listenerIDs = append(listenerIDs, listener.ID)
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// get all pools associated with this loadbalancer
	var poolIDs []string
	err = v2_pools.List(lbaas.network, v2_pools.ListOpts{LoadbalancerID: loadbalancer.ID}).EachPage(func(page pagination.Page) (bool, error) {
		poolsList, err := v2_pools.ExtractPools(page)
		if err != nil {
			return false, err
		}

		for _, pool := range poolsList {
			poolIDs = append(poolIDs, pool.ID)
		}

		return true, nil
	})
	if err != nil {
		return err
	}

	// get all members associated with each poolIDs
	var memberIDs []string
	for _, poolID := range poolIDs {
		err := v2_pools.ListAssociateMembers(lbaas.network, poolID, v2_pools.MemberListOpts{}).EachPage(func(page pagination.Page) (bool, error) {
			membersList, err := v2_pools.ExtractMembers(page)
			if err != nil {
				return false, err
			}

			for _, member := range membersList {
				memberIDs = append(memberIDs, member.ID)
			}

			return true, nil
		})
		if err != nil {
			return err
		}
	}

	// get all monitors associated with each poolIDs
	var monitorIDs []string
	for _, poolID := range poolIDs {
		err = v2_monitors.List(lbaas.network, v2_monitors.ListOpts{PoolID: poolID}).EachPage(func(page pagination.Page) (bool, error) {
			monitorsList, err := v2_monitors.ExtractMonitors(page)
			if err != nil {
				return false, err
			}

			for _, monitor := range monitorsList {
				monitorIDs = append(monitorIDs, monitor.ID)
			}

			return true, nil
//.........这里部分代码省略.........