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vpcipclaim.go
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vpcipclaim.go
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// Copyright UCloud. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may
// not use this file except in compliance with the License. A copy of the
// License is located at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// or in the "license" file accompanying this file. This file is distributed
// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
package main
import (
"fmt"
"time"
v1beta1 "github.com/ucloud/uk8s-cni-vpc/kubernetes/apis/vipcontroller/v1beta1"
crdclientset "github.com/ucloud/uk8s-cni-vpc/kubernetes/generated/clientset/versioned"
crdinformers "github.com/ucloud/uk8s-cni-vpc/kubernetes/generated/informers/externalversions/vipcontroller/v1beta1"
crdlisters "github.com/ucloud/uk8s-cni-vpc/kubernetes/generated/listers/vipcontroller/v1beta1"
"github.com/ucloud/uk8s-cni-vpc/pkg/ulog"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
)
type VipController struct {
vipClient crdclientset.Interface
kubeClient clientset.Interface
vipLister crdlisters.VpcIpClaimLister
vipSynced cache.InformerSynced
deleteQueue workqueue.RateLimitingInterface
workerLoopPeriod time.Duration
}
func NewVipController(vipInformer crdinformers.VpcIpClaimInformer, vpcIpClaimclientset crdclientset.Interface, kubeClient clientset.Interface) *VipController {
c := &VipController{
vipClient: vpcIpClaimclientset,
kubeClient: kubeClient,
deleteQueue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "vpcipclaims"),
workerLoopPeriod: 50 * time.Millisecond,
}
vipInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
DeleteFunc: func(del interface{}) {
vip := del.(*v1beta1.VpcIpClaim)
c.deleteQueue.Add(vip)
},
})
c.vipLister = vipInformer.Lister()
c.vipSynced = vipInformer.Informer().HasSynced
return c
}
func (c *VipController) Run(workers int, stopCh <-chan struct{}) {
defer utilruntime.HandleCrash()
defer c.deleteQueue.ShutDown()
ulog.Infof("Starting vpcipclaim controller")
defer ulog.Warnf("Shutting down vpcipclaim controller")
if !cache.WaitForNamedCacheSync("vpcipclaims", stopCh, c.vipSynced) {
ulog.Errorf("Cannot finish WaitForNamedCacheSync for vpcipclaims")
return
}
for i := 0; i < workers; i++ {
go wait.Until(c.worker, c.workerLoopPeriod, stopCh)
}
<-stopCh
}
func (c *VipController) worker() {
for {
c.processDelete()
}
}
func (c *VipController) processDelete() {
s, quit := c.deleteQueue.Get()
if quit {
ulog.Warnf("Empty deleteQueue")
return
}
defer c.deleteQueue.Forget(s)
vip := s.(*v1beta1.VpcIpClaim)
if err := c.onVipDelete(vip); err == nil {
c.deleteQueue.Done(s)
}
}
func (c *VipController) onVipDelete(vip *v1beta1.VpcIpClaim) error {
notRunning, err := ensureStaticIpPodNotRunning(c.kubeClient, vip.Namespace, vip.Name)
if err == nil && notRunning {
ulog.Infof("VpcIpClaim %s/%s %s is deleted, now release secondary ip", vip.Namespace, vip.Name, vip.Spec.Ip)
return releaseVPCIp(*vip)
} else {
return fmt.Errorf("cannot delete vip %s/%s %s, podNotRunning %v, get pod err %v", vip.Namespace, vip.Name, vip.Spec.Ip, notRunning, err)
}
}