/
reconciler.go
322 lines (276 loc) · 11.8 KB
/
reconciler.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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
// Copyright (c) 2021 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 dnsrecord
import (
"context"
"fmt"
extensionscontroller "github.com/gardener/gardener/extensions/pkg/controller"
"github.com/gardener/gardener/extensions/pkg/controller/common"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
gardencorev1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils"
reconcilerutils "github.com/gardener/gardener/pkg/controllerutils/reconciler"
"github.com/gardener/gardener/pkg/extensions"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
"github.com/go-logr/logr"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
)
type reconciler struct {
actuator Actuator
client client.Client
reader client.Reader
statusUpdater extensionscontroller.StatusUpdaterCustom
}
// NewReconciler creates a new reconcile.Reconciler that reconciles
// dnsrecord resources of Gardener's `extensions.gardener.cloud` API group.
func NewReconciler(actuator Actuator) reconcile.Reconciler {
return reconcilerutils.OperationAnnotationWrapper(
func() client.Object { return &extensionsv1alpha1.DNSRecord{} },
&reconciler{
actuator: actuator,
statusUpdater: extensionscontroller.NewStatusUpdater(),
},
)
}
func (r *reconciler) InjectFunc(f inject.Func) error {
return f(r.actuator)
}
func (r *reconciler) InjectClient(client client.Client) error {
r.client = client
r.statusUpdater.InjectClient(client)
return nil
}
func (r *reconciler) InjectAPIReader(reader client.Reader) error {
r.reader = reader
return nil
}
func (r *reconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
log := logf.FromContext(ctx)
dns := &extensionsv1alpha1.DNSRecord{}
if err := r.client.Get(ctx, request.NamespacedName, dns); 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)
}
var cluster *extensions.Cluster
if dns.Namespace != v1beta1constants.GardenNamespace {
var err error
cluster, err = extensionscontroller.GetCluster(ctx, r.client, dns.Namespace)
if err != nil {
return reconcile.Result{}, err
}
if extensionscontroller.IsFailed(cluster) {
log.Info("Skipping the reconciliation of DNSRecord of failed shoot")
return reconcile.Result{}, nil
}
}
operationType := gardencorev1beta1helper.ComputeOperationType(dns.ObjectMeta, dns.Status.LastOperation)
if cluster != nil && cluster.Shoot != nil && dns.Name != cluster.Shoot.Name+"-"+v1beta1constants.DNSRecordOwnerName && operationType != gardencorev1beta1.LastOperationTypeMigrate {
key := "dnsrecord:" + kutil.ObjectName(dns)
ok, watchdogCtx, cleanup, err := common.GetOwnerCheckResultAndContext(ctx, r.client, dns.Namespace, cluster.Shoot.Name, key)
if err != nil {
return reconcile.Result{}, err
} else if !ok {
return reconcile.Result{}, fmt.Errorf("this seed is not the owner of shoot %s", kutil.ObjectName(cluster.Shoot))
}
ctx = watchdogCtx
if cleanup != nil {
defer cleanup()
}
}
switch {
case extensionscontroller.ShouldSkipOperation(operationType, dns):
return reconcile.Result{}, nil
case operationType == gardencorev1beta1.LastOperationTypeMigrate:
return r.migrate(ctx, log, dns, cluster)
case dns.DeletionTimestamp != nil:
return r.delete(ctx, log, dns, cluster)
case operationType == gardencorev1beta1.LastOperationTypeRestore:
return r.restore(ctx, log, dns, cluster)
default:
return r.reconcile(ctx, log, dns, cluster, operationType)
}
}
func (r *reconciler) reconcile(
ctx context.Context,
log logr.Logger,
dns *extensionsv1alpha1.DNSRecord,
cluster *extensionscontroller.Cluster,
operationType gardencorev1beta1.LastOperationType,
) (
reconcile.Result,
error,
) {
if !controllerutil.ContainsFinalizer(dns, FinalizerName) {
log.Info("Adding finalizer")
if err := controllerutils.AddFinalizers(ctx, r.client, dns, FinalizerName); err != nil {
return reconcile.Result{}, fmt.Errorf("failed to add finalizer: %w", err)
}
}
if err := r.statusUpdater.ProcessingCustom(ctx, log, dns, operationType, "Reconciling the DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
log.Info("Starting the reconciliation of DNSRecord")
if err := r.actuator.Reconcile(ctx, log, dns, cluster); err != nil {
_ = r.statusUpdater.ErrorCustom(ctx, log, dns, reconcilerutils.ReconcileErrCauseOrErr(err), operationType, "Error reconciling DNSRecord", addCreatedConditionFalse)
return reconcilerutils.ReconcileErr(err)
}
if err := r.statusUpdater.SuccessCustom(ctx, log, dns, operationType, "Successfully reconciled DNSRecord", addCreatedConditionTrue); err != nil {
return reconcile.Result{}, err
}
return reconcile.Result{}, nil
}
func (r *reconciler) restore(
ctx context.Context,
log logr.Logger,
dns *extensionsv1alpha1.DNSRecord,
cluster *extensionscontroller.Cluster,
) (
reconcile.Result,
error,
) {
if !controllerutil.ContainsFinalizer(dns, FinalizerName) {
log.Info("Adding finalizer")
if err := controllerutils.AddFinalizers(ctx, r.client, dns, FinalizerName); err != nil {
return reconcile.Result{}, fmt.Errorf("failed to add finalizer: %w", err)
}
}
if err := r.statusUpdater.ProcessingCustom(ctx, log, dns, gardencorev1beta1.LastOperationTypeRestore, "Restoring the DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
log.Info("Starting the restoration of DNSRecord")
if err := r.actuator.Restore(ctx, log, dns, cluster); err != nil {
_ = r.statusUpdater.ErrorCustom(ctx, log, dns, reconcilerutils.ReconcileErrCauseOrErr(err), gardencorev1beta1.LastOperationTypeRestore, "Error restoring DNSRecord", addCreatedConditionFalse)
return reconcilerutils.ReconcileErr(err)
}
if err := r.statusUpdater.SuccessCustom(ctx, log, dns, gardencorev1beta1.LastOperationTypeRestore, "Successfully restored DNSRecord", addCreatedConditionTrue); err != nil {
return reconcile.Result{}, err
}
if err := extensionscontroller.RemoveAnnotation(ctx, r.client, dns, v1beta1constants.GardenerOperation); err != nil {
return reconcile.Result{}, fmt.Errorf("error removing annotation from DNSRecord: %+v", err)
}
return reconcile.Result{}, nil
}
func (r *reconciler) migrate(
ctx context.Context,
log logr.Logger,
dns *extensionsv1alpha1.DNSRecord,
cluster *extensionscontroller.Cluster,
) (
reconcile.Result,
error,
) {
if err := r.statusUpdater.ProcessingCustom(ctx, log, dns, gardencorev1beta1.LastOperationTypeMigrate, "Migrating the DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
log.Info("Starting the migration of DNSRecord")
if err := r.actuator.Migrate(ctx, log, dns, cluster); err != nil {
_ = r.statusUpdater.ErrorCustom(ctx, log, dns, reconcilerutils.ReconcileErrCauseOrErr(err), gardencorev1beta1.LastOperationTypeMigrate, "Error migrating DNSRecord", nil)
return reconcilerutils.ReconcileErr(err)
}
if err := r.statusUpdater.SuccessCustom(ctx, log, dns, gardencorev1beta1.LastOperationTypeMigrate, "Successfully migrated DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
log.Info("Removing all finalizers")
if err := controllerutils.RemoveAllFinalizers(ctx, r.client, dns); err != nil {
return reconcile.Result{}, fmt.Errorf("error removing finalizers: %w", err)
}
if err := extensionscontroller.RemoveAnnotation(ctx, r.client, dns, v1beta1constants.GardenerOperation); err != nil {
return reconcile.Result{}, fmt.Errorf("error removing annotation from DNSRecord: %+v", err)
}
return reconcile.Result{}, nil
}
func (r *reconciler) delete(
ctx context.Context,
log logr.Logger,
dns *extensionsv1alpha1.DNSRecord,
cluster *extensionscontroller.Cluster,
) (
reconcile.Result,
error,
) {
if !controllerutil.ContainsFinalizer(dns, FinalizerName) {
log.Info("Deleting DNSRecord causes a no-op as there is no finalizer")
return reconcile.Result{}, nil
}
switch getCreatedConditionStatus(dns.GetExtensionStatus()) {
case gardencorev1beta1.ConditionTrue, gardencorev1beta1.ConditionUnknown:
operationType := gardencorev1beta1helper.ComputeOperationType(dns.ObjectMeta, dns.Status.LastOperation)
if err := r.statusUpdater.ProcessingCustom(ctx, log, dns, operationType, "Deleting the DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
log.Info("Starting the deletion of DNSRecord")
if err := r.actuator.Delete(ctx, log, dns, cluster); err != nil {
_ = r.statusUpdater.ErrorCustom(ctx, log, dns, reconcilerutils.ReconcileErrCauseOrErr(err), operationType, "Error deleting DNSRecord", nil)
return reconcilerutils.ReconcileErr(err)
}
if err := r.statusUpdater.SuccessCustom(ctx, log, dns, operationType, "Successfully deleted DNSRecord", nil); err != nil {
return reconcile.Result{}, err
}
case gardencorev1beta1.ConditionFalse:
log.Info("Deleting DNSRecord is no-op as not created")
}
if controllerutil.ContainsFinalizer(dns, FinalizerName) {
log.Info("Removing finalizer")
if err := controllerutils.RemoveFinalizers(ctx, r.client, dns, FinalizerName); err != nil {
return reconcile.Result{}, fmt.Errorf("failed to remove finalizer: %w", err)
}
}
return reconcile.Result{}, nil
}
func updateCreatedCondition(status extensionsv1alpha1.Status, conditionStatus gardencorev1beta1.ConditionStatus, reason, message string, updateIfExisting bool) error {
conditions := status.GetConditions()
c := gardencorev1beta1helper.GetCondition(conditions, extensionsv1alpha1.ConditionTypeCreated)
if c != nil && !updateIfExisting {
return nil
}
if c != nil && c.Status == conditionStatus {
return nil
}
builder, err := gardencorev1beta1helper.NewConditionBuilder(extensionsv1alpha1.ConditionTypeCreated)
if err != nil {
return err
}
if c != nil {
builder = builder.WithOldCondition(*c)
}
new, _ := builder.WithStatus(conditionStatus).WithReason(reason).WithMessage(message).Build()
status.SetConditions(gardencorev1beta1helper.MergeConditions(conditions, new))
return nil
}
func getCreatedConditionStatus(status extensionsv1alpha1.Status) gardencorev1beta1.ConditionStatus {
for _, c := range status.GetConditions() {
if c.Type == extensionsv1alpha1.ConditionTypeCreated {
return c.Status
}
}
return gardencorev1beta1.ConditionUnknown
}
func addCreatedConditionFalse(status extensionsv1alpha1.Status) error {
message := "Error on initial record creation in infrastructure"
return updateCreatedCondition(status, gardencorev1beta1.ConditionFalse, "Error", message, false)
}
func addCreatedConditionTrue(status extensionsv1alpha1.Status) error {
message := "Record was created successfully in infrastructure at least once"
return updateCreatedCondition(status, gardencorev1beta1.ConditionTrue, "Success", message, true)
}