/
clusterinfo_controller.go
275 lines (234 loc) · 8.23 KB
/
clusterinfo_controller.go
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package managedclusterinfo
import (
"context"
"reflect"
corev1 "k8s.io/api/core/v1"
"k8s.io/client-go/tools/cache"
clusterinfov1beta1 "github.com/stolostron/cluster-lifecycle-api/clusterinfo/v1beta1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/klog/v2"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"sigs.k8s.io/controller-runtime/pkg/manager"
"k8s.io/apimachinery/pkg/runtime"
clusterv1 "open-cluster-management.io/api/cluster/v1"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/stolostron/multicluster-controlplane/pkg/helpers"
)
const (
clusterFinalizerName = "managedclusterinfo.finalizers.open-cluster-management.io"
)
var (
logCertSecretNamespace string
logCertSecretName string
)
type ClusterInfoReconciler struct {
client client.Client
scheme *runtime.Scheme
}
func SetupWithManager(mgr manager.Manager, logCertSecret string) error {
var err error
if len(logCertSecret) != 0 {
logCertSecretNamespace, logCertSecretName, err = cache.SplitMetaNamespaceKey(logCertSecret)
if err != nil {
return err
}
if logCertSecretNamespace == "" {
logCertSecretNamespace, err = helpers.GetComponentNamespace()
if err != nil {
return err
}
}
} else {
klog.Warning("The log cert secret is not specified, ignore it")
}
if err = add("clusterinfo-controller", mgr, newClusterInfoReconciler(mgr)); err != nil {
return err
}
if err = add("clusterdetector-controller", mgr, newAutoDetectReconciler(mgr)); err != nil {
return err
}
if err = add("clustercapcity-controller", mgr, newCapacityReconciler(mgr)); err != nil {
return err
}
return nil
}
// newReconciler returns a new reconcile.Reconciler
func newClusterInfoReconciler(mgr manager.Manager) reconcile.Reconciler {
return &ClusterInfoReconciler{
client: mgr.GetClient(),
scheme: mgr.GetScheme(),
}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(name string, mgr manager.Manager, r reconcile.Reconciler) error {
// Create a new controller
c, err := controller.New(name, mgr, controller.Options{Reconciler: r})
if err != nil {
return err
}
err = c.Watch(source.Kind(mgr.GetCache(), &clusterv1.ManagedCluster{}), &handler.EnqueueRequestForObject{})
if err != nil {
return err
}
if err := c.Watch(source.Kind(mgr.GetCache(), &clusterinfov1beta1.ManagedClusterInfo{}),
&handler.EnqueueRequestForObject{}); err != nil {
return err
}
err = c.Watch(source.Kind(mgr.GetCache(), &corev1.Secret{}), handler.EnqueueRequestsFromMapFunc(
handler.MapFunc(func(ctx context.Context, a client.Object) []reconcile.Request {
certSecret, ok := a.(*corev1.Secret)
if !ok {
// not a secret, returning empty
klog.Error("clusterinfo handler received non-secret object")
return []reconcile.Request{}
}
if certSecret.Name != logCertSecretName || certSecret.Namespace != logCertSecretNamespace {
return []reconcile.Request{}
}
managedClusterInfoList := &clusterinfov1beta1.ManagedClusterInfoList{}
err := mgr.GetClient().List(context.TODO(), managedClusterInfoList)
if err != nil {
klog.Error("Could not list managedClusterInfo", err)
}
var requests []reconcile.Request
for _, managedClusterInfo := range managedClusterInfoList.Items {
requests = append(requests, reconcile.Request{
NamespacedName: types.NamespacedName{
Name: managedClusterInfo.Name,
Namespace: managedClusterInfo.Namespace,
},
})
}
return requests
}),
))
return err
}
func (r *ClusterInfoReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
cluster := &clusterv1.ManagedCluster{}
err := r.client.Get(ctx, types.NamespacedName{Name: req.Name}, cluster)
if err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}
// Check DeletionTimestamp to determine if object is under deletion
if !cluster.GetDeletionTimestamp().IsZero() {
// The object is being deleted
if helpers.ContainsString(cluster.GetFinalizers(), clusterFinalizerName) {
err := r.deleteClusterInfo(cluster.Name)
if err != nil {
return reconcile.Result{}, err
}
patch := client.MergeFrom(cluster.DeepCopy())
cluster.Finalizers = helpers.RemoveString(cluster.ObjectMeta.Finalizers, clusterFinalizerName)
return reconcile.Result{}, r.client.Patch(ctx, cluster, patch)
}
return reconcile.Result{}, nil
}
if !helpers.ContainsString(cluster.GetFinalizers(), clusterFinalizerName) {
patch := client.MergeFrom(cluster.DeepCopy())
cluster.Finalizers = append(cluster.Finalizers, clusterFinalizerName)
return reconcile.Result{}, r.client.Patch(ctx, cluster, patch)
}
clusterInfo := &clusterinfov1beta1.ManagedClusterInfo{}
err = r.client.Get(ctx, types.NamespacedName{Name: cluster.Name, Namespace: cluster.Name}, clusterInfo)
switch {
case errors.IsNotFound(err):
return ctrl.Result{}, r.client.Create(ctx, r.newClusterInfoByManagedCluster(cluster))
case err != nil:
return ctrl.Result{}, err
}
update := false
endpoint := ""
if len(cluster.Spec.ManagedClusterClientConfigs) != 0 {
endpoint = cluster.Spec.ManagedClusterClientConfigs[0].URL
if endpoint != "" && endpoint != clusterInfo.Spec.MasterEndpoint {
clusterInfo.Spec.MasterEndpoint = endpoint
update = true
}
}
caData, err := r.getLogCA()
if err != nil {
klog.Errorf("failed to get log CA. %v", err)
}
if caData != nil && !reflect.DeepEqual(caData, clusterInfo.Spec.LoggingCA) {
clusterInfo.Spec.LoggingCA = caData
update = true
}
if update {
return ctrl.Result{}, r.client.Update(ctx, clusterInfo)
}
// TODO: the conditions of managed cluster need to be deprecated.
clusterConditions := cluster.Status.Conditions
newClusterInfo := clusterInfo.DeepCopy()
// empty node list in clusterInfo status when cluster is offline
if helpers.ClusterIsOffLine(clusterConditions) {
newClusterInfo.Status.NodeList = []clusterinfov1beta1.NodeStatus{}
}
newClusterInfo.Status.Conditions = clusterConditions
syncedCondition := meta.FindStatusCondition(clusterInfo.Status.Conditions, clusterinfov1beta1.ManagedClusterInfoSynced)
if syncedCondition != nil {
newClusterInfo.Status.Conditions = append(newClusterInfo.Status.Conditions, *syncedCondition)
}
if !reflect.DeepEqual(newClusterInfo.Status, clusterInfo.Status) {
err = r.client.Status().Update(ctx, newClusterInfo)
if err != nil {
klog.Warningf("will reconcile since failed to update ManagedClusterInfo status %v, %v", cluster.Name, err)
return ctrl.Result{}, err
}
}
return ctrl.Result{}, nil
}
func (r *ClusterInfoReconciler) deleteClusterInfo(name string) error {
err := r.client.Delete(context.Background(), &clusterinfov1beta1.ManagedClusterInfo{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: name,
},
})
return client.IgnoreNotFound(err)
}
func (r *ClusterInfoReconciler) newClusterInfoByManagedCluster(cluster *clusterv1.ManagedCluster) *clusterinfov1beta1.ManagedClusterInfo {
endpoint := ""
if len(cluster.Spec.ManagedClusterClientConfigs) != 0 {
endpoint = cluster.Spec.ManagedClusterClientConfigs[0].URL
}
caData, err := r.getLogCA()
if err != nil {
klog.Errorf("failed to get log CA. %v", err)
}
return &clusterinfov1beta1.ManagedClusterInfo{
ObjectMeta: metav1.ObjectMeta{
Name: cluster.Name,
Namespace: cluster.Name,
Labels: cluster.Labels,
},
Spec: clusterinfov1beta1.ClusterInfoSpec{
MasterEndpoint: endpoint,
LoggingCA: caData,
},
Status: clusterinfov1beta1.ClusterInfoStatus{
Conditions: cluster.Status.Conditions,
},
}
}
func (r *ClusterInfoReconciler) getLogCA() ([]byte, error) {
if len(logCertSecretName) == 0 {
// the log cert secret is not specified, ignore it
return nil, nil
}
logCertSecret := &corev1.Secret{}
err := r.client.Get(context.TODO(), types.NamespacedName{Name: logCertSecretName, Namespace: logCertSecretNamespace}, logCertSecret)
if err != nil {
klog.Errorf("failed to get log cert secret %v/%v: %v", logCertSecretNamespace, logCertSecretName, err)
return nil, err
}
caData := logCertSecret.Data["ca.crt"]
return caData, nil
}