243 lines
7.2 KiB
Go
243 lines
7.2 KiB
Go
/*
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Copyright 2020 KubeSphere Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package s2ibinary
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import (
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"context"
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"fmt"
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"time"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/kubernetes/scheme"
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v1core "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/record"
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"k8s.io/client-go/util/workqueue"
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"k8s.io/klog"
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"kubesphere.io/kubesphere/pkg/simple/client/s3"
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"kubesphere.io/kubesphere/pkg/utils/sliceutil"
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devopsv1alpha1 "kubesphere.io/api/devops/v1alpha1"
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devopsclient "kubesphere.io/kubesphere/pkg/client/clientset/versioned"
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devopsinformers "kubesphere.io/kubesphere/pkg/client/informers/externalversions/devops/v1alpha1"
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devopslisters "kubesphere.io/kubesphere/pkg/client/listers/devops/v1alpha1"
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)
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/**
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s2ibinary-controller used to handle s2ibinary's delete logic.
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s2ibinary creation and file upload provided by kubesphere/kapis
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*/
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type Controller struct {
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client clientset.Interface
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devopsClient devopsclient.Interface
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eventBroadcaster record.EventBroadcaster
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eventRecorder record.EventRecorder
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s2iBinaryLister devopslisters.S2iBinaryLister
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s2iBinarySynced cache.InformerSynced
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workqueue workqueue.RateLimitingInterface
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workerLoopPeriod time.Duration
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s3Client s3.Interface
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}
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func NewController(client clientset.Interface,
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devopsclientset devopsclient.Interface,
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s2ibinInformer devopsinformers.S2iBinaryInformer,
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s3Client s3.Interface) *Controller {
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broadcaster := record.NewBroadcaster()
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broadcaster.StartLogging(func(format string, args ...interface{}) {
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klog.Info(fmt.Sprintf(format, args))
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})
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broadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: client.CoreV1().Events("")})
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recorder := broadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "s2ibinary-controller"})
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v := &Controller{
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client: client,
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devopsClient: devopsclientset,
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workqueue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "s2ibinary"),
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s2iBinaryLister: s2ibinInformer.Lister(),
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s2iBinarySynced: s2ibinInformer.Informer().HasSynced,
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workerLoopPeriod: time.Second,
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s3Client: s3Client,
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}
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v.eventBroadcaster = broadcaster
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v.eventRecorder = recorder
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s2ibinInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
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AddFunc: v.enqueueS2iBinary,
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UpdateFunc: func(oldObj, newObj interface{}) {
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old := oldObj.(*devopsv1alpha1.S2iBinary)
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new := newObj.(*devopsv1alpha1.S2iBinary)
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if old.ResourceVersion == new.ResourceVersion {
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return
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}
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v.enqueueS2iBinary(newObj)
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},
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DeleteFunc: v.enqueueS2iBinary,
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})
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return v
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}
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// enqueueS2iBinary takes a Foo resource and converts it into a namespace/name
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// string which is then put onto the work workqueue. This method should *not* be
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// passed resources of any type other than S2iBinary.
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func (c *Controller) enqueueS2iBinary(obj interface{}) {
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var key string
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var err error
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if key, err = cache.MetaNamespaceKeyFunc(obj); err != nil {
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utilruntime.HandleError(err)
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return
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}
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c.workqueue.Add(key)
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}
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func (c *Controller) processNextWorkItem() bool {
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obj, shutdown := c.workqueue.Get()
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if shutdown {
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return false
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}
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err := func(obj interface{}) error {
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defer c.workqueue.Done(obj)
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var key string
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var ok bool
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if key, ok = obj.(string); !ok {
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c.workqueue.Forget(obj)
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utilruntime.HandleError(fmt.Errorf("expected string in workqueue but got %#v", obj))
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return nil
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}
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if err := c.syncHandler(key); err != nil {
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c.workqueue.AddRateLimited(key)
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return fmt.Errorf("error syncing '%s': %s, requeuing", key, err.Error())
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}
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c.workqueue.Forget(obj)
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klog.V(5).Infof("Successfully synced '%s'", key)
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return nil
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}(obj)
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if err != nil {
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klog.Error(err, "could not reconcile s2ibinary")
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utilruntime.HandleError(err)
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return true
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}
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return true
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}
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func (c *Controller) worker() {
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for c.processNextWorkItem() {
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}
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}
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func (c *Controller) Start(stopCh <-chan struct{}) error {
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return c.Run(1, stopCh)
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}
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func (c *Controller) Run(workers int, stopCh <-chan struct{}) error {
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defer utilruntime.HandleCrash()
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defer c.workqueue.ShutDown()
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klog.Info("starting s2ibinary controller")
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defer klog.Info("shutting down s2ibinary controller")
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if !cache.WaitForCacheSync(stopCh, c.s2iBinarySynced) {
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return fmt.Errorf("failed to wait for caches to sync")
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}
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for i := 0; i < workers; i++ {
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go wait.Until(c.worker, c.workerLoopPeriod, stopCh)
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}
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<-stopCh
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return nil
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}
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// syncHandler compares the actual state with the desired, and attempts to
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// converge the two. It then updates the Status block of the Foo resource
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// with the current status of the resource.
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func (c *Controller) syncHandler(key string) error {
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namespace, name, err := cache.SplitMetaNamespaceKey(key)
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if err != nil {
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klog.Error(err, fmt.Sprintf("could not split s2ibin meta %s ", key))
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return nil
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}
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s2ibin, err := c.s2iBinaryLister.S2iBinaries(namespace).Get(name)
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if err != nil {
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if errors.IsNotFound(err) {
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klog.Info(fmt.Sprintf("s2ibin '%s' in work queue no longer exists ", key))
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return nil
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}
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klog.Error(err, fmt.Sprintf("could not get s2ibin %s ", key))
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return err
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}
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if s2ibin.ObjectMeta.DeletionTimestamp.IsZero() {
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if !sliceutil.HasString(s2ibin.ObjectMeta.Finalizers, devopsv1alpha1.S2iBinaryFinalizerName) {
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s2ibin.ObjectMeta.Finalizers = append(s2ibin.ObjectMeta.Finalizers, devopsv1alpha1.S2iBinaryFinalizerName)
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_, err := c.devopsClient.DevopsV1alpha1().S2iBinaries(namespace).Update(context.Background(), s2ibin, metav1.UpdateOptions{})
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if err != nil {
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klog.Error(err, fmt.Sprintf("failed to update s2ibin %s ", key))
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return err
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}
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}
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} else {
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if sliceutil.HasString(s2ibin.ObjectMeta.Finalizers, devopsv1alpha1.S2iBinaryFinalizerName) {
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if err := c.deleteBinaryInS3(s2ibin); err != nil {
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klog.Error(err, fmt.Sprintf("failed to delete resource %s in s3", key))
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return err
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}
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s2ibin.ObjectMeta.Finalizers = sliceutil.RemoveString(s2ibin.ObjectMeta.Finalizers, func(item string) bool {
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return item == devopsv1alpha1.S2iBinaryFinalizerName
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})
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_, err := c.devopsClient.DevopsV1alpha1().S2iBinaries(namespace).Update(context.Background(), s2ibin, metav1.UpdateOptions{})
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if err != nil {
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klog.Error(err, fmt.Sprintf("failed to update s2ibin %s ", key))
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return err
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}
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}
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}
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return nil
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}
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func (c *Controller) deleteBinaryInS3(s2ibin *devopsv1alpha1.S2iBinary) error {
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key := fmt.Sprintf("%s-%s", s2ibin.Namespace, s2ibin.Name)
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err := c.s3Client.Delete(key)
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if err != nil {
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klog.Errorf("error happened while deleting %s, %v", key, err)
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}
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return nil
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}
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