235 lines
7.1 KiB
Go
235 lines
7.1 KiB
Go
/*
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Copyright 2019 The 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 namespace
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import (
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"context"
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appsv1 "k8s.io/api/apps/v1"
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corev1 "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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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/klog"
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"kubesphere.io/kubesphere/pkg/apis/tenant/v1alpha1"
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"kubesphere.io/kubesphere/pkg/constants"
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"kubesphere.io/kubesphere/pkg/utils/sliceutil"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/controller"
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"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
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"sigs.k8s.io/controller-runtime/pkg/handler"
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"sigs.k8s.io/controller-runtime/pkg/manager"
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"sigs.k8s.io/controller-runtime/pkg/reconcile"
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"sigs.k8s.io/controller-runtime/pkg/source"
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)
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/**
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* USER ACTION REQUIRED: This is a scaffold file intended for the user to modify with their own Controller
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* business logic. Delete these comments after modifying this file.*
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*/
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// Add creates a new Namespace Controller and adds it to the Manager with default RBAC. The Manager will set fields on the Controller
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// and Start it when the Manager is Started.
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func Add(mgr manager.Manager) error {
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return add(mgr, newReconciler(mgr))
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}
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// newReconciler returns a new reconcile.Reconciler
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func newReconciler(mgr manager.Manager) reconcile.Reconciler {
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return &ReconcileNamespace{
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Client: mgr.GetClient(),
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scheme: mgr.GetScheme(),
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}
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}
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// add adds a new Controller to mgr with r as the reconcile.Reconciler
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func add(mgr manager.Manager, r reconcile.Reconciler) error {
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// Create a new controller
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c, err := controller.New("namespace-controller", mgr, controller.Options{Reconciler: r})
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if err != nil {
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return err
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}
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// Watch for changes to Namespace
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err = c.Watch(&source.Kind{Type: &corev1.Namespace{}}, &handler.EnqueueRequestForObject{})
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if err != nil {
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return err
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}
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return nil
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}
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var _ reconcile.Reconciler = &ReconcileNamespace{}
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// ReconcileNamespace reconciles a Namespace object
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type ReconcileNamespace struct {
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client.Client
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scheme *runtime.Scheme
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}
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// Reconcile reads that state of the cluster for a Namespace object and makes changes based on the state read
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// and what is in the Namespace.Spec
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// +kubebuilder:rbac:groups=core.kubesphere.io,resources=namespaces,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=core.kubesphere.io,resources=namespaces/status,verbs=get;update;patch
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func (r *ReconcileNamespace) Reconcile(request reconcile.Request) (reconcile.Result, error) {
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// Fetch the Namespace instance
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instance := &corev1.Namespace{}
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err := r.Get(context.TODO(), request.NamespacedName, instance)
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if err != nil {
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if errors.IsNotFound(err) {
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// Object not found, return. Created objects are automatically garbage collected.
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// For additional cleanup logic use finalizers.
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// The object is being deleted
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// our finalizer is present, so lets handle our external dependency
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return reconcile.Result{}, nil
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}
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// Error reading the object - requeue the request.
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return reconcile.Result{}, err
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}
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// name of your custom finalizer
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finalizer := "finalizers.kubesphere.io/namespaces"
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if instance.ObjectMeta.DeletionTimestamp.IsZero() {
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// The object is not being deleted, so if it does not have our finalizer,
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// then lets add the finalizer and update the object.
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if !sliceutil.HasString(instance.ObjectMeta.Finalizers, finalizer) {
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instance.ObjectMeta.Finalizers = append(instance.ObjectMeta.Finalizers, finalizer)
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if instance.Labels == nil {
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instance.Labels = make(map[string]string)
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}
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instance.Labels[constants.NamespaceLabelKey] = instance.Name
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if err := r.Update(context.Background(), instance); err != nil {
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return reconcile.Result{}, err
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}
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}
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} else {
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// The object is being deleted
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if sliceutil.HasString(instance.ObjectMeta.Finalizers, finalizer) {
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if err = r.deleteRouter(instance.Name); err != nil {
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return reconcile.Result{}, err
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}
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// remove our finalizer from the list and update it.
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instance.ObjectMeta.Finalizers = sliceutil.RemoveString(instance.ObjectMeta.Finalizers, func(item string) bool {
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return item == finalizer
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})
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if err := r.Update(context.Background(), instance); err != nil {
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return reconcile.Result{}, err
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}
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}
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// Our finalizer has finished, so the reconciler can do nothing.
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return reconcile.Result{}, nil
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}
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if err = r.checkAndBindWorkspace(instance); err != nil {
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return reconcile.Result{}, err
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}
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return reconcile.Result{}, nil
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}
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func (r *ReconcileNamespace) isControlledByWorkspace(namespace *corev1.Namespace) (bool, error) {
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workspaceName := namespace.Labels[constants.WorkspaceLabelKey]
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// without workspace label
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if workspaceName == "" {
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return false, nil
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}
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return true, nil
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}
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func (r *ReconcileNamespace) checkAndBindWorkspace(namespace *corev1.Namespace) error {
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workspaceName := namespace.Labels[constants.WorkspaceLabelKey]
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if workspaceName == "" {
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return nil
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}
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workspace := &v1alpha1.Workspace{}
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err := r.Get(context.TODO(), types.NamespacedName{Name: workspaceName}, workspace)
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if err != nil {
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// skip if workspace not found
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if errors.IsNotFound(err) {
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return nil
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}
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klog.Errorf("bind workspace namespace: %s, workspace: %s, error: %s", namespace.Name, workspaceName, err)
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return err
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}
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if !metav1.IsControlledBy(namespace, workspace) {
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if err := controllerutil.SetControllerReference(workspace, namespace, r.scheme); err != nil {
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klog.Errorf("bind workspace namespace: %s, workspace: %s, error: %s", namespace.Name, workspaceName, err)
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return err
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}
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err = r.Update(context.TODO(), namespace)
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if err != nil {
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klog.Errorf("bind workspace namespace: %s, workspace: %s, error: %s", namespace.Name, workspaceName, err)
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return err
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}
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}
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return nil
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}
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func (r *ReconcileNamespace) deleteRouter(namespace string) error {
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routerName := constants.IngressControllerPrefix + namespace
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// delete service first
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found := corev1.Service{}
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err := r.Get(context.TODO(), types.NamespacedName{Namespace: constants.IngressControllerNamespace, Name: routerName}, &found)
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if err != nil {
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if errors.IsNotFound(err) {
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return nil
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}
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klog.Error(err)
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}
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err = r.Delete(context.TODO(), &found)
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if err != nil {
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klog.Error(err)
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return err
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}
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// delete deployment
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deploy := appsv1.Deployment{}
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err = r.Get(context.TODO(), types.NamespacedName{Namespace: constants.IngressControllerNamespace, Name: routerName}, &deploy)
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if err != nil {
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if errors.IsNotFound(err) {
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return nil
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}
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klog.Error(err)
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return err
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}
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err = r.Delete(context.TODO(), &deploy)
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if err != nil {
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klog.Error(err)
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return err
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}
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return nil
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}
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