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service.go
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service.go
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package controller
import (
"fmt"
"strings"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/labels"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/client-go/tools/cache"
"k8s.io/klog/v2"
kubeovnv1 "github.com/kubeovn/kube-ovn/pkg/apis/kubeovn/v1"
"github.com/kubeovn/kube-ovn/pkg/util"
)
type vpcService struct {
Vip string
Vpc string
Protocol v1.Protocol
}
func (c *Controller) enqueueAddService(obj interface{}) {
if !c.isLeader() {
return
}
var key string
var err error
if key, err = cache.MetaNamespaceKeyFunc(obj); err != nil {
utilruntime.HandleError(err)
return
}
svc := obj.(*v1.Service)
klog.V(3).Infof("enqueue update service %s", key)
if c.config.EnableNP {
var netpols []string
if netpols, err = c.svcMatchNetworkPolicies(svc); err != nil {
utilruntime.HandleError(err)
return
}
for _, np := range netpols {
c.updateNpQueue.Add(np)
}
}
}
func (c *Controller) enqueueDeleteService(obj interface{}) {
if !c.isLeader() {
return
}
svc := obj.(*v1.Service)
//klog.V(3).Infof("enqueue delete service %s/%s", svc.Namespace, svc.Name)
klog.Infof("enqueue delete service %s/%s", svc.Namespace, svc.Name)
if svc.Spec.ClusterIP != v1.ClusterIPNone && svc.Spec.ClusterIP != "" {
if c.config.EnableNP {
var netpols []string
var err error
if netpols, err = c.svcMatchNetworkPolicies(svc); err != nil {
utilruntime.HandleError(err)
return
}
for _, np := range netpols {
c.updateNpQueue.Add(np)
}
}
for _, port := range svc.Spec.Ports {
vpcSvc := &vpcService{
Vip: fmt.Sprintf("%s:%d", svc.Spec.ClusterIP, port.Port),
Protocol: port.Protocol,
Vpc: svc.Annotations[util.VpcAnnotation],
}
klog.Infof("delete vpc service %v", vpcSvc)
c.deleteServiceQueue.Add(vpcSvc)
}
}
}
func (c *Controller) enqueueUpdateService(old, new interface{}) {
if !c.isLeader() {
return
}
oldSvc := old.(*v1.Service)
newSvc := new.(*v1.Service)
if oldSvc.ResourceVersion == newSvc.ResourceVersion {
return
}
var key string
var err error
if key, err = cache.MetaNamespaceKeyFunc(new); err != nil {
utilruntime.HandleError(err)
return
}
klog.V(3).Infof("enqueue update service %s", key)
c.updateServiceQueue.Add(key)
}
func (c *Controller) runDeleteServiceWorker() {
for c.processNextDeleteServiceWorkItem() {
}
}
func (c *Controller) runUpdateServiceWorker() {
for c.processNextUpdateServiceWorkItem() {
}
}
func (c *Controller) processNextDeleteServiceWorkItem() bool {
obj, shutdown := c.deleteServiceQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.deleteServiceQueue.Done(obj)
var vpcSvc *vpcService
var ok bool
if vpcSvc, ok = obj.(*vpcService); !ok {
c.deleteServiceQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected vpcService in workqueue but got %#v", obj))
return nil
}
if err := c.handleDeleteService(vpcSvc); err != nil {
c.deleteServiceQueue.AddRateLimited(obj)
return fmt.Errorf("error syncing '%s': %s, requeuing", vpcSvc.Vip, err.Error())
}
c.deleteServiceQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func (c *Controller) processNextUpdateServiceWorkItem() bool {
obj, shutdown := c.updateServiceQueue.Get()
if shutdown {
return false
}
err := func(obj interface{}) error {
defer c.updateServiceQueue.Done(obj)
var key string
var ok bool
if key, ok = obj.(string); !ok {
c.updateServiceQueue.Forget(obj)
utilruntime.HandleError(fmt.Errorf("expected string in workqueue but got %#v", obj))
return nil
}
if err := c.handleUpdateService(key); err != nil {
c.updateServiceQueue.AddRateLimited(key)
return fmt.Errorf("error syncing '%s': %s, requeuing", key, err.Error())
}
c.updateServiceQueue.Forget(obj)
return nil
}(obj)
if err != nil {
utilruntime.HandleError(err)
return true
}
return true
}
func (c *Controller) handleDeleteService(service *vpcService) error {
svcs, err := c.servicesLister.Services(v1.NamespaceAll).List(labels.Everything())
if err != nil {
klog.Errorf("failed to list svc, %v", err)
return err
}
for _, svc := range svcs {
if svc.Spec.ClusterIP == parseVipAddr(service.Vip) {
return nil
}
}
vpcLbConfig := c.GenVpcLoadBalancer(service.Vpc)
vip := service.Vip
if service.Protocol == v1.ProtocolTCP {
if err := c.ovnClient.DeleteLoadBalancerVip(vip, vpcLbConfig.TcpLoadBalancer); err != nil {
klog.Errorf("failed to delete vip %s from tcp lb, %v", vip, err)
return err
}
if err := c.ovnClient.DeleteLoadBalancerVip(vip, vpcLbConfig.TcpSessLoadBalancer); err != nil {
klog.Errorf("failed to delete vip %s from tcp session lb, %v", vip, err)
return err
}
} else {
if err := c.ovnClient.DeleteLoadBalancerVip(vip, vpcLbConfig.UdpLoadBalancer); err != nil {
klog.Errorf("failed to delete vip %s from udp lb, %v", vip, err)
return err
}
if err := c.ovnClient.DeleteLoadBalancerVip(vip, vpcLbConfig.UdpSessLoadBalancer); err != nil {
klog.Errorf("failed to delete vip %s from udp session lb, %v", vip, err)
return err
}
}
return nil
}
func (c *Controller) handleUpdateService(key string) error {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
utilruntime.HandleError(fmt.Errorf("invalid resource key: %s", key))
return nil
}
klog.Infof("update svc %s/%s", namespace, name)
svc, err := c.servicesLister.Services(namespace).Get(name)
if err != nil {
if errors.IsNotFound(err) {
return nil
}
return err
}
ip := svc.Spec.ClusterIP
if ip == "" || ip == v1.ClusterIPNone {
return nil
}
tcpVips := []string{}
udpVips := []string{}
vpcName := svc.Annotations[util.VpcAnnotation]
if vpcName == "" {
vpcName = util.DefaultVpc
}
vpc, err := c.vpcsLister.Get(vpcName)
if err != nil {
klog.Errorf("failed to get vpc %s of lb, %v", vpcName, err)
return err
}
tcpLb, udpLb := vpc.Status.TcpLoadBalancer, vpc.Status.UdpLoadBalancer
oTcpLb, oUdpLb := vpc.Status.TcpSessionLoadBalancer, vpc.Status.UdpSessionLoadBalancer
if svc.Spec.SessionAffinity == v1.ServiceAffinityClientIP {
tcpLb, udpLb = vpc.Status.TcpSessionLoadBalancer, vpc.Status.UdpSessionLoadBalancer
oTcpLb, oUdpLb = vpc.Status.TcpLoadBalancer, vpc.Status.UdpLoadBalancer
}
for _, port := range svc.Spec.Ports {
if port.Protocol == v1.ProtocolTCP {
if util.CheckProtocol(ip) == kubeovnv1.ProtocolIPv6 {
tcpVips = append(tcpVips, fmt.Sprintf("[%s]:%d", ip, port.Port))
} else {
tcpVips = append(tcpVips, fmt.Sprintf("%s:%d", ip, port.Port))
}
} else if port.Protocol == v1.ProtocolUDP {
if util.CheckProtocol(ip) == kubeovnv1.ProtocolIPv6 {
udpVips = append(udpVips, fmt.Sprintf("[%s]:%d", ip, port.Port))
} else {
udpVips = append(udpVips, fmt.Sprintf("%s:%d", ip, port.Port))
}
}
}
// for service update
lbUuid, err := c.ovnClient.FindLoadbalancer(tcpLb)
if err != nil {
klog.Errorf("failed to get lb %v", err)
return err
}
vips, err := c.ovnClient.GetLoadBalancerVips(lbUuid)
if err != nil {
klog.Errorf("failed to get tcp lb vips %v", err)
return err
}
klog.V(3).Infof("exist tcp vips are %v", vips)
for _, vip := range tcpVips {
if err := c.ovnClient.DeleteLoadBalancerVip(vip, oTcpLb); err != nil {
klog.Errorf("failed to delete lb %s form %s, %v", vip, oTcpLb, err)
return err
}
if _, ok := vips[vip]; !ok {
klog.Infof("add vip %s to tcp lb %s", vip, oTcpLb)
c.updateEndpointQueue.Add(key)
break
}
}
for vip := range vips {
if parseVipAddr(vip) == ip && !util.IsStringIn(vip, tcpVips) {
klog.Infof("remove stall vip %s", vip)
err := c.ovnClient.DeleteLoadBalancerVip(vip, tcpLb)
if err != nil {
klog.Errorf("failed to delete vip %s from tcp lb %v", vip, err)
return err
}
}
}
lbUuid, err = c.ovnClient.FindLoadbalancer(udpLb)
if err != nil {
klog.Errorf("failed to get lb %v", err)
return err
}
vips, err = c.ovnClient.GetLoadBalancerVips(lbUuid)
if err != nil {
klog.Errorf("failed to get udp lb vips %v", err)
return err
}
klog.Infof("exist udp vips are %v", vips)
for _, vip := range udpVips {
if err := c.ovnClient.DeleteLoadBalancerVip(vip, oUdpLb); err != nil {
klog.Errorf("failed to delete lb %s form %s, %v", vip, oUdpLb, err)
return err
}
if _, ok := vips[vip]; !ok {
klog.Infof("add vip %s to udp lb %s", vip, oUdpLb)
c.updateEndpointQueue.Add(key)
break
}
}
for vip := range vips {
if parseVipAddr(vip) == ip && !util.IsStringIn(vip, udpVips) {
klog.Infof("remove stall vip %s", vip)
if err := c.ovnClient.DeleteLoadBalancerVip(vip, udpLb); err != nil {
klog.Errorf("failed to delete vip %s from udp lb %v", vip, err)
return err
}
}
}
return nil
}
// The type of vips is map, which format is like [fd00:10:96::11c9]:10665:[fc00:f853:ccd:e793::2]:10665,[fc00:f853:ccd:e793::3]:10665
// Parse key of map, [fd00:10:96::11c9]:10665 for example
func parseVipAddr(vipStr string) string {
vip := strings.Split(vipStr, ":")[0]
if strings.ContainsAny(vipStr, "[]") {
vip = strings.Trim(strings.Split(vipStr, "]")[0], "[]")
}
return vip
}