/
controller.go
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/
controller.go
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// /*
// Copyright (c) 2021 T-Systems International GmbH, SAP SE or an SAP affiliate company. All right reserved
//
// 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 web
import (
"context"
"github.com/go-logr/logr"
"github.com/onmetal/meeting-operator/apis/jitsi/v1beta1"
meeterr "github.com/onmetal/meeting-operator/internal/errors"
"github.com/onmetal/meeting-operator/internal/jitsi"
"github.com/onmetal/meeting-operator/internal/utils"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/predicate"
)
type Reconciler struct {
client.Client
Log logr.Logger
Scheme *runtime.Scheme
}
type Web struct {
client.Client
*v1beta1.Web
Service jitsi.Servicer
ctx context.Context
log logr.Logger
name, namespace string
labels map[string]string
}
func (r *Reconciler) SetupWithManager(mgr ctrl.Manager) error {
return ctrl.NewControllerManagedBy(mgr).
For(&v1beta1.Web{}).
WithEventFilter(r.constructPredicates()).
Complete(r)
}
func (r *Reconciler) constructPredicates() predicate.Predicate {
return predicate.Funcs{
UpdateFunc: isSpecUpdated,
DeleteFunc: func(event.DeleteEvent) bool { return false },
}
}
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups=apps,resources=statefulsets,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups="",resources=services,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups="",resources=endpoints,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups="",resources=configmaps,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups="",resources=secrets,verbs=get;list;watch;create;update;delete
// +kubebuilder:rbac:groups="",resources=events,verbs=create;patch
// +kubebuilder:rbac:groups=jitsi.meeting.ko,resources=webs,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=jitsi.meeting.ko,resources=webs/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=jitsi.meeting.ko,resources=webs/finalizers,verbs=update
func (r *Reconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
reqLogger := r.Log.WithValues("name", req.Name, "namespace", req.Namespace)
web, err := r.newInstance(ctx, reqLogger, req)
if err != nil {
if meeterr.IsUnderDeletion(err) {
reqLogger.V(1).Info("deletion finished")
return ctrl.Result{}, web.Delete()
}
reqLogger.Error(err, "can't create new instance of web")
return ctrl.Result{}, client.IgnoreNotFound(err)
}
deployment, getErr := web.Get()
if apierrors.IsNotFound(getErr) {
if createErr := web.Create(); createErr != nil {
return ctrl.Result{}, createErr
}
reqLogger.V(1).Info("reconciliation finished")
return ctrl.Result{}, nil
}
if updErr := web.Update(deployment); updErr != nil {
return ctrl.Result{}, updErr
}
reqLogger.V(1).Info("reconciliation finished")
return ctrl.Result{}, nil
}
func (r *Reconciler) newInstance(ctx context.Context, l logr.Logger, req ctrl.Request) (*Web, error) {
w := &v1beta1.Web{}
if err := r.Get(ctx, req.NamespacedName, w); err != nil {
return nil, err
}
defaultLabels := utils.GetDefaultLabelsForApp(name)
s := jitsi.NewService(ctx, r.Client, l, name, w.Namespace, w.Spec.ServiceAnnotations, defaultLabels, w.Spec.ServiceType, w.Spec.Ports)
if !w.DeletionTimestamp.IsZero() {
return &Web{
Client: r.Client,
Web: w,
Service: s,
ctx: ctx,
log: l,
name: name,
namespace: w.Namespace,
labels: defaultLabels,
}, meeterr.UnderDeletion()
}
if err := utils.AddFinalizer(ctx, r.Client, w); err != nil {
l.Info("finalizer cannot be added", "error", err)
}
return &Web{
Client: r.Client,
Web: w,
Service: s,
ctx: ctx,
log: l,
name: name,
namespace: w.Namespace,
labels: defaultLabels,
}, nil
}
func isSpecUpdated(e event.UpdateEvent) bool {
oldObj, oldOk := e.ObjectOld.(*v1beta1.Web)
newObj, newOk := e.ObjectNew.(*v1beta1.Web)
if !oldOk || !newOk {
return false
}
if len(oldObj.Finalizers) < 1 && len(newObj.Finalizers) >= 1 {
return false
}
return true
}