-
Notifications
You must be signed in to change notification settings - Fork 450
/
namespacefinalizer.go
82 lines (71 loc) · 3.04 KB
/
namespacefinalizer.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
// Copyright 2022 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 namespacefinalizer
import (
"context"
"fmt"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/utils/pointer"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"github.com/gardener/gardener/pkg/controllerutils/predicate"
utilclient "github.com/gardener/gardener/pkg/utils/kubernetes/client"
)
// Reconciler is a reconciler that finalizes namespaces once they are marked for deletion.
// This is useful for integration testing against an envtest control plane, which doesn't run the namespace controller.
// Hence, if the tested controller must wait for a namespace to be deleted, it will be stuck forever.
// This reconciler finalizes namespaces without deleting their contents, so use with care.
type Reconciler struct {
Client client.Client
NamespaceFinalizer utilclient.Finalizer
}
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(mgr manager.Manager) error {
if r.Client == nil {
r.Client = mgr.GetClient()
}
if r.NamespaceFinalizer == nil {
r.NamespaceFinalizer = utilclient.NewNamespaceFinalizer()
}
return builder.ControllerManagedBy(mgr).
Named("namespacefinalizer").
For(&corev1.Namespace{}, builder.WithPredicates(predicate.IsDeleting())).
WithOptions(controller.Options{
MaxConcurrentReconciles: 5,
RecoverPanic: pointer.Bool(true),
}).
Complete(r)
}
// Reconcile finalizes namespaces as soon as they are marked for deletion.
func (r *Reconciler) Reconcile(ctx context.Context, req reconcile.Request) (reconcile.Result, error) {
log := logf.FromContext(ctx)
namespace := &corev1.Namespace{}
if err := r.Client.Get(ctx, req.NamespacedName, namespace); err != nil {
if apierrors.IsNotFound(err) {
log.V(1).Info("Object is gone, stop reconciling")
return reconcile.Result{}, nil
}
return reconcile.Result{}, fmt.Errorf("error retrieving object from store: %w", err)
}
if namespace.DeletionTimestamp == nil {
return reconcile.Result{}, nil
}
log.V(1).Info("Finalizing Namespace")
return reconcile.Result{}, r.NamespaceFinalizer.Finalize(ctx, r.Client, namespace)
}