This repository has been archived by the owner on Apr 7, 2020. It is now read-only.
/
reconciler.go
208 lines (179 loc) · 8.65 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
// Copyright (c) 2019 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 backupentry
import (
"context"
"fmt"
extensionscontroller "github.com/gardener/gardener-extensions/pkg/controller"
"github.com/gardener/gardener-extensions/pkg/util"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
gardencorev1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/go-logr/logr"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/retry"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/runtime/inject"
)
const (
// EventBackupEntryReconciliation an event reason to describe backup entry reconciliation.
EventBackupEntryReconciliation string = "BackupEntryReconciliation"
// EventBackupEntryDeletion an event reason to describe backup entry deletion.
EventBackupEntryDeletion string = "BackupEntryDeletion"
)
type reconciler struct {
logger logr.Logger
actuator Actuator
ctx context.Context
client client.Client
recorder record.EventRecorder
}
// NewReconciler creates a new reconcile.Reconciler that reconciles
// backupentry resources of Gardener's `extensions.gardener.cloud` API group.
func NewReconciler(mgr manager.Manager, actuator Actuator) reconcile.Reconciler {
return extensionscontroller.OperationAnnotationWrapper(
&extensionsv1alpha1.BackupEntry{},
&reconciler{
logger: log.Log.WithName(ControllerName),
actuator: actuator,
recorder: mgr.GetEventRecorderFor(ControllerName),
})
}
func (r *reconciler) InjectFunc(f inject.Func) error {
return f(r.actuator)
}
func (r *reconciler) InjectClient(client client.Client) error {
r.client = client
return nil
}
func (r *reconciler) InjectStopChannel(stopCh <-chan struct{}) error {
r.ctx = util.ContextFromStopChannel(stopCh)
return nil
}
func (r *reconciler) Reconcile(request reconcile.Request) (reconcile.Result, error) {
be := &extensionsv1alpha1.BackupEntry{}
if err := r.client.Get(r.ctx, request.NamespacedName, be); err != nil {
if errors.IsNotFound(err) {
return reconcile.Result{}, nil
}
return reconcile.Result{}, err
}
if be.DeletionTimestamp != nil {
return r.delete(r.ctx, be)
}
return r.reconcile(r.ctx, be)
}
func (r *reconciler) reconcile(ctx context.Context, be *extensionsv1alpha1.BackupEntry) (reconcile.Result, error) {
if err := extensionscontroller.EnsureFinalizer(ctx, r.client, FinalizerName, be); err != nil {
return reconcile.Result{}, err
}
operationType := gardencorev1beta1helper.ComputeOperationType(be.ObjectMeta, be.Status.LastOperation)
if err := r.updateStatusProcessing(ctx, be, operationType, "Reconciling the backupentry"); err != nil {
return reconcile.Result{}, err
}
secret, err := extensionscontroller.GetSecretByReference(ctx, r.client, &be.Spec.SecretRef)
if err != nil {
r.logger.Error(err, "failed to get backup entry secret", "backupentry", be.Name)
return reconcile.Result{}, err
}
if err := extensionscontroller.EnsureFinalizer(ctx, r.client, FinalizerName, secret); err != nil {
r.logger.Error(err, "failed to ensure finalizer on backup entry secret", "backupentry", be.Name)
return reconcile.Result{}, err
}
r.logger.Info("Starting the reconciliation of backupentry", "backupentry", be.Name)
r.recorder.Event(be, corev1.EventTypeNormal, EventBackupEntryReconciliation, "Reconciling the backupentry")
if err := r.actuator.Reconcile(ctx, be); err != nil {
msg := "Error reconciling backupentry"
_ = r.updateStatusError(ctx, extensionscontroller.ReconcileErrCauseOrErr(err), be, operationType, msg)
r.logger.Error(err, msg, "backupentry", be.Name)
return extensionscontroller.ReconcileErr(err)
}
msg := "Successfully reconciled backupentry"
r.logger.Info(msg, "backupentry", be.Name)
r.recorder.Event(be, corev1.EventTypeNormal, EventBackupEntryReconciliation, msg)
if err := r.updateStatusSuccess(ctx, be, operationType, msg); err != nil {
return reconcile.Result{}, err
}
return reconcile.Result{}, nil
}
func (r *reconciler) delete(ctx context.Context, be *extensionsv1alpha1.BackupEntry) (reconcile.Result, error) {
hasFinalizer, err := extensionscontroller.HasFinalizer(be, FinalizerName)
if err != nil {
r.logger.Error(err, "Could not instantiate finalizer deletion")
return reconcile.Result{}, err
}
if !hasFinalizer {
r.logger.Info("Deleting backupentry causes a no-op as there is no finalizer.", "backupentry", be.Name)
return reconcile.Result{}, nil
}
operationType := gardencorev1beta1helper.ComputeOperationType(be.ObjectMeta, be.Status.LastOperation)
if err := r.updateStatusProcessing(ctx, be, operationType, "Deleting the backupentry"); err != nil {
return reconcile.Result{}, err
}
r.logger.Info("Starting the deletion of backupentry", "backupentry", be.Name)
r.recorder.Event(be, corev1.EventTypeNormal, EventBackupEntryDeletion, "Deleting the backupentry")
if err := r.actuator.Delete(r.ctx, be); err != nil {
msg := "Error deleting backupentry"
r.recorder.Eventf(be, corev1.EventTypeWarning, EventBackupEntryDeletion, "%s: %+v", msg, err)
_ = r.updateStatusError(ctx, extensionscontroller.ReconcileErrCauseOrErr(err), be, operationType, msg)
r.logger.Error(err, msg, "backupentry", be.Name)
return extensionscontroller.ReconcileErr(err)
}
msg := "Successfully deleted backupentry"
r.logger.Info(msg, "backupentry", be.Name)
r.recorder.Event(be, corev1.EventTypeNormal, EventBackupEntryDeletion, msg)
if err := r.updateStatusSuccess(ctx, be, operationType, msg); err != nil {
return reconcile.Result{}, err
}
secret, err := extensionscontroller.GetSecretByReference(ctx, r.client, &be.Spec.SecretRef)
if err != nil {
r.logger.Error(err, "failed to get backup entry secret", "backupentry", be.Name)
return reconcile.Result{}, err
}
if err := extensionscontroller.DeleteFinalizer(ctx, r.client, FinalizerName, secret); err != nil {
r.logger.Error(err, "failed to remove finalizer on backup entry secret", "backupentry", be.Name)
return reconcile.Result{}, err
}
r.logger.Info("Removing finalizer.", "backupentry", be.Name)
if err := extensionscontroller.DeleteFinalizer(ctx, r.client, FinalizerName, be); err != nil {
r.logger.Error(err, "Error removing finalizer from backupentry", "backupentry", be.Name)
return reconcile.Result{}, err
}
return reconcile.Result{}, nil
}
func (r *reconciler) updateStatusProcessing(ctx context.Context, be *extensionsv1alpha1.BackupEntry, lastOperationType gardencorev1beta1.LastOperationType, description string) error {
return extensionscontroller.TryUpdateStatus(ctx, retry.DefaultBackoff, r.client, be, func() error {
be.Status.LastOperation = extensionscontroller.LastOperation(lastOperationType, gardencorev1beta1.LastOperationStateProcessing, 1, description)
return nil
})
}
func (r *reconciler) updateStatusError(ctx context.Context, err error, be *extensionsv1alpha1.BackupEntry, lastOperationType gardencorev1beta1.LastOperationType, description string) error {
return extensionscontroller.TryUpdateStatus(ctx, retry.DefaultBackoff, r.client, be, func() error {
be.Status.ObservedGeneration = be.Generation
be.Status.LastOperation, be.Status.LastError = extensionscontroller.ReconcileError(lastOperationType, gardencorev1beta1helper.FormatLastErrDescription(fmt.Errorf("%s: %v", description, err)), 50, gardencorev1beta1helper.ExtractErrorCodes(err)...)
return nil
})
}
func (r *reconciler) updateStatusSuccess(ctx context.Context, be *extensionsv1alpha1.BackupEntry, lastOperationType gardencorev1beta1.LastOperationType, description string) error {
return extensionscontroller.TryUpdateStatus(ctx, retry.DefaultBackoff, r.client, be, func() error {
be.Status.ObservedGeneration = be.Generation
be.Status.LastOperation, be.Status.LastError = extensionscontroller.ReconcileSucceeded(lastOperationType, description)
return nil
})
}