137 lines
4.7 KiB
Go
137 lines
4.7 KiB
Go
/*
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Copyright 2021.
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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 controllers
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import (
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"context"
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"github.com/Nerzal/gocloak/v7"
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"github.com/go-logr/logr"
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apierrs "k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/runtime"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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keycloakv1alpha1 "git.zom.bi/images/keycloak-operator/api/v1alpha1"
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"git.zom.bi/images/keycloak-operator/controllers/keycloak"
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)
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// KeycloakClientReconciler reconciles a KeycloakClient object
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type KeycloakClientReconciler struct {
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client.Client
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Keycloak *keycloak.Keycloak
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Log logr.Logger
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Scheme *runtime.Scheme
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}
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// +kubebuilder:rbac:groups=keycloak.bitmask.me,resources=keycloakclients,verbs=get;list;watch;create;update;patch;delete
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// +kubebuilder:rbac:groups=keycloak.bitmask.me,resources=keycloakclients/status,verbs=get;update;patch
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// +kubebuilder:rbac:groups=keycloak.bitmask.me,resources=keycloakclients/finalizers,verbs=update
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// Reconcile is part of the main kubernetes reconciliation loop which aims to
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// move the current state of the cluster closer to the desired state.
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// TODO(user): Modify the Reconcile function to compare the state specified by
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// the KeycloakClient object against the actual cluster state, and then
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// perform operations to make the cluster state reflect the state specified by
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// the user.
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//
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// For more details, check Reconcile and its Result here:
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// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.7.0/pkg/reconcile
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func (r *KeycloakClientReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
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log := r.Log.WithValues("keycloakclient", req.NamespacedName)
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log.Info("reconciling")
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// We get the information from the CRD
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var client keycloakv1alpha1.KeycloakClient
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if err := r.Get(ctx, req.NamespacedName, &client); err != nil {
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if apierrs.IsNotFound(err) {
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// Client is already deleted via finalizer.
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return ctrl.Result{}, nil
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}
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}
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if !client.ObjectMeta.DeletionTimestamp.IsZero() {
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// is in the process of being deleted
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if containsString(client.ObjectMeta.Finalizers, FinalizerName) {
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// our finalizer is present, so lets handle any external dependency
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// We do not want to delete anything, so we just disable the client.
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disabled := gocloak.Client{ClientID: &client.Spec.ClientID, Enabled: gocloak.BoolP(false)}
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err := r.Keycloak.UpdateClient(ctx, client.Spec.RealmName, disabled)
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if err != nil {
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// if fail to delete the external dependency here, return with error
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// so that it can be retried
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return ctrl.Result{}, err
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}
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// remove our finalizer from the list and update it.
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client.ObjectMeta.Finalizers = removeString(client.ObjectMeta.Finalizers, FinalizerName)
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if err := r.Update(ctx, &client); err != nil {
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return ctrl.Result{}, err
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}
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log.Info("Deleted the client")
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}
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// done
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return ctrl.Result{}, nil
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}
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// Its not being deleted, so we seize the moment to take ownership.
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if !containsString(client.ObjectMeta.Finalizers, FinalizerName) {
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typeMeta := client.TypeMeta
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client.ObjectMeta.Finalizers = append(client.ObjectMeta.Finalizers, FinalizerName)
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if err := r.Update(ctx, &client); err != nil {
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return ctrl.Result{}, err
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}
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// restore the TypeMeta object as it is removed during Update, but need to be accessed later
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client.TypeMeta = typeMeta
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}
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// Convert Client
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keycloakClient, err := ConvertToClient(client)
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if err != nil {
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log.Error(err, "Could not convert client")
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return ctrl.Result{}, err
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}
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err = r.Keycloak.CreateClient(ctx, client.Spec.RealmName, keycloakClient)
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if err != nil {
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// try updating instead
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err := r.Keycloak.UpdateClient(ctx, client.Spec.RealmName, keycloakClient)
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if err != nil {
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log.Error(err, "Could not create/update client")
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return ctrl.Result{}, err
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}
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log.Info("Updated the client")
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return ctrl.Result{}, nil
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}
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client.Status.Available = true
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r.Status().Update(ctx, &client)
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log.Info("Successfully created client")
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return ctrl.Result{}, nil
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}
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// SetupWithManager sets up the controller with the Manager.
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func (r *KeycloakClientReconciler) SetupWithManager(mgr ctrl.Manager) error {
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return ctrl.NewControllerManagedBy(mgr).
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For(&keycloakv1alpha1.KeycloakClient{}).
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Complete(r)
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}
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