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extension.go
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extension.go
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// Copyright 2019 The Kubernetes Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License 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 kubernetes
import (
"context"
"errors"
"fmt"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/klog"
"sigs.k8s.io/controller-runtime/pkg/client"
dplv1 "github.com/open-cluster-management/multicloud-operators-deployable/pkg/apis/apps/v1"
appv1 "github.com/open-cluster-management/multicloud-operators-subscription/pkg/apis/apps/v1"
"github.com/open-cluster-management/multicloud-operators-subscription/pkg/utils"
)
// SubscriptionExtension provides default extension settings
type SubscriptionExtension struct {
localClient client.Client
remoteClient client.Client
IngoredGroupKindMap map[schema.GroupKind]bool
}
// Extension defines the extension features of synchronizer
type Extension interface {
UpdateHostStatus(error, *unstructured.Unstructured, interface{}, bool) error
GetHostFromObject(metav1.Object) *types.NamespacedName
SetSynchronizerToObject(metav1.Object, *types.NamespacedName) error
SetHostToObject(metav1.Object, types.NamespacedName, *types.NamespacedName) error
IsObjectOwnedByHost(metav1.Object, types.NamespacedName, *types.NamespacedName) bool
IsObjectOwnedBySynchronizer(metav1.Object, *types.NamespacedName) bool
IsIgnoredGroupKind(schema.GroupKind) bool
}
var (
defaultExtension = &SubscriptionExtension{
IngoredGroupKindMap: map[schema.GroupKind]bool{
dplgk: true,
},
}
)
// UpdateHostSubscriptionStatus defines update host status function for deployable
func (se *SubscriptionExtension) UpdateHostStatus(actionerr error, tplunit *unstructured.Unstructured, status interface{}, deletePkg bool) error {
host := se.GetHostFromObject(tplunit)
// the tplunit is the root subscription on managed cluster
if host == nil || host.String() == "/" {
return utils.UpdateDeployableStatus(se.remoteClient, actionerr, tplunit, status)
}
//update managed cluster subscription status
if err := utils.UpdateSubscriptionStatus(se.localClient, actionerr, tplunit, status, deletePkg); err != nil {
return fmt.Errorf("failed to update managed cluster status, err: %v", err)
}
if err := se.updateHostDeployable(se.localClient, se.remoteClient, actionerr, tplunit); err != nil {
return fmt.Errorf("failed to update the host deployable status, err %v", err)
}
return nil
}
// make sure the delay status update of the managed cluster status is put
// back to host deployable
func (se *SubscriptionExtension) updateHostDeployable(local, remote client.Client, actionerr error, tplunit metav1.Object) error {
subIns := &appv1.Subscription{}
subkey := utils.GetHostSubscriptionFromObject(tplunit)
if subkey == nil {
klog.Info("The template", tplunit.GetNamespace(), "/", tplunit.GetName(), " does not have hosting subscription", tplunit.GetAnnotations())
return nil
}
if err := local.Get(context.TODO(), *subkey, subIns); err != nil {
return err
}
host := utils.GetHostDeployableFromObject(subIns)
if host == nil {
klog.V(2).Info("Failed to find hosting deployable for ", subIns)
return nil
}
if host.String() == "/" {
klog.V(2).Info("host is not hub deployable, skip this deployable override")
return nil
}
return utils.UpdateDeployableStatus(remote, actionerr, subIns, subIns.Status)
}
// GetHostFromObject defines update host status function for deployable
func (se *SubscriptionExtension) GetHostFromObject(obj metav1.Object) *types.NamespacedName {
return utils.GetHostSubscriptionFromObject(obj)
}
// SetSynchronizerToObject defines update host status function for deployable
func (se *SubscriptionExtension) SetSynchronizerToObject(obj metav1.Object, syncid *types.NamespacedName) error {
if obj == nil {
return errors.New("trying to set host to nil object")
}
objanno := obj.GetAnnotations()
if objanno != nil {
delete(objanno, dplv1.AnnotationManagedCluster)
obj.SetAnnotations(objanno)
}
return nil
}
// SetHostToObject defines update host status function for deployable
func (se *SubscriptionExtension) SetHostToObject(obj metav1.Object, host types.NamespacedName, syncid *types.NamespacedName) error {
if obj == nil {
return errors.New("trying to set host to nil object")
}
objanno := obj.GetAnnotations()
if objanno == nil {
objanno = make(map[string]string)
}
if objanno[appv1.AnnotationHosting] == "" {
objanno[appv1.AnnotationHosting] = host.String()
obj.SetAnnotations(objanno)
}
return se.SetSynchronizerToObject(obj, syncid)
}
// IsObjectOwnedBySynchronizer defines update host status function for deployable
func (se *SubscriptionExtension) IsObjectOwnedBySynchronizer(obj metav1.Object, syncid *types.NamespacedName) bool {
if obj == nil {
// return false to let caller skip
return false
}
objanno := obj.GetAnnotations()
if objanno != nil {
_, ok := objanno[dplv1.AnnotationManagedCluster]
return !ok
}
// nil annotation owned by sub sync, though not by any sub
return true
}
// IsObjectOwnedByHost defines update host status function for deployable
func (se *SubscriptionExtension) IsObjectOwnedByHost(obj metav1.Object, host types.NamespacedName, syncid *types.NamespacedName) bool {
owned := se.IsObjectOwnedBySynchronizer(obj, syncid)
if !owned {
klog.V(5).Info("Resource", obj, " is not owned by ", syncid)
return owned
}
objhost := utils.GetHostSubscriptionFromObject(obj)
if objhost == nil {
return false
}
return objhost.Namespace == host.Namespace && objhost.Name == host.Name
}
// IsIgnoredGroupKind defines update host status function for deployable
func (se *SubscriptionExtension) IsIgnoredGroupKind(gk schema.GroupKind) bool {
return se.IngoredGroupKindMap[gk]
}