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package synccontroller
import (
"context"
"strings"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/klog/v2"
"github.com/kubeedge/api/reliablesyncs/v1alpha1"
beehiveContext "github.com/kubeedge/beehive/pkg/core/context"
"github.com/kubeedge/beehive/pkg/core/model"
commonconst "github.com/kubeedge/kubeedge/common/constants"
v2 "github.com/kubeedge/kubeedge/edge/pkg/metamanager/dao/v2"
"github.com/kubeedge/kubeedge/pkg/metaserver/util"
)
func (sctl *SyncController) reconcileClusterObjectSync(sync *v1alpha1.ClusterObjectSync) {
var object metav1.Object
gv, err := schema.ParseGroupVersion(sync.Spec.ObjectAPIVersion)
if err != nil {
return
}
resource := util.UnsafeKindToResource(sync.Spec.ObjectKind)
gvr := gv.WithResource(resource)
nodeName := getNodeName(sync.Name)
resourceType := strings.ToLower(sync.Spec.ObjectKind)
lister, err := sctl.informerManager.GetLister(gvr)
if err != nil {
return
}
ret, err := lister.Get(sync.Spec.ObjectName)
if apierrors.IsNotFound(err) {
sctl.gcOrphanedClusterObjectSync(sync)
return
}
if err != nil || ret == nil {
klog.Errorf("failed to get obj(gvr:%v, name:%v): %v", gvr, sync.Spec.ObjectName, err)
return
}
object, err = meta.Accessor(ret)
if err != nil {
klog.Errorf("failed to Accessor obj(gvr:%v, name:%v): %v", gvr, sync.Spec.ObjectName, err)
return
}
syncObjUID := getObjectUID(sync.Name)
if syncObjUID != string(object.GetUID()) {
sctl.gcOrphanedClusterObjectSync(sync)
return
}
sendClusterObjectSyncEvent(nodeName, sync, resourceType, object.GetResourceVersion(), object)
}
// gcOrphanedClusterObjectSync try to send delete message to the edge node
// to make sure that the resource is deleted in the edge node. After the
// message ACK is received by `cloudHub`, the objectSync will be deleted
// directly in the `cloudHub`. But if message build failed, the ClusterObjectSync
// will be deleted directly in the `syncController`.
func (sctl *SyncController) gcOrphanedClusterObjectSync(sync *v1alpha1.ClusterObjectSync) {
resourceType := strings.ToLower(sync.Spec.ObjectKind)
nodeName := getNodeName(sync.Name)
klog.V(4).Infof("%s: %s has been deleted in K8s, send the delete event to edge in sync loop", resourceType, sync.Spec.ObjectName)
object := &unstructured.Unstructured{}
object.SetName(sync.Spec.ObjectName)
object.SetUID(types.UID(getObjectUID(sync.Name)))
if msg := buildEdgeControllerMessage(nodeName, v2.NullNamespace, resourceType, sync.Spec.ObjectName, model.DeleteOperation, object); msg != nil {
beehiveContext.Send(commonconst.DefaultContextSendModuleName, *msg)
} else {
if err := sctl.crdclient.ReliablesyncsV1alpha1().ClusterObjectSyncs().Delete(context.Background(), sync.Name, *metav1.NewDeleteOptions(0)); err != nil {
klog.Errorf("Failed to delete clusterObjectSync %s: %v", sync.Name, err)
}
}
}
func sendClusterObjectSyncEvent(nodeName string, sync *v1alpha1.ClusterObjectSync, resourceType string,
objectResourceVersion string, obj interface{}) {
runtimeObj := obj.(runtime.Object)
if err := util.SetMetaType(runtimeObj); err != nil {
klog.Warningf("failed to set metatype :%v", err)
}
if sync.Status.ObjectResourceVersion == "" {
klog.Errorf("The ObjectResourceVersion is empty in status of clusterObjectSync: %s", sync.Name)
return
}
if CompareResourceVersion(objectResourceVersion, sync.Status.ObjectResourceVersion) > 0 {
// trigger the update event
klog.V(4).Infof("The resourceVersion: %s of %s in K8s is greater than in edgenode: %s, send the update event", objectResourceVersion, resourceType, sync.Status.ObjectResourceVersion)
msg := buildEdgeControllerMessage(nodeName, v2.NullNamespace, resourceType, sync.Spec.ObjectName, model.UpdateOperation, obj)
beehiveContext.Send(commonconst.DefaultContextSendModuleName, *msg)
}
}
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