/
controller.go
170 lines (139 loc) · 5.35 KB
/
controller.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
/*
Copyright 2022 The Kubermatic Kubernetes Platform contributors.
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 presetsynchronizer
import (
"context"
"fmt"
"go.uber.org/zap"
kubermaticv1 "k8c.io/kubermatic/v2/pkg/apis/kubermatic/v1"
kuberneteshelper "k8c.io/kubermatic/v2/pkg/kubernetes"
"k8c.io/kubermatic/v2/pkg/resources/reconciling"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/record"
ctrlruntimeclient "sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
)
const (
// This controller syncs the kubermatic preset on the master cluster to the seed clusters.
ControllerName = "kkp-preset-synchronizer"
// cleanupFinalizer indicates that synced preset on seed clusters need cleanup.
cleanupFinalizer = "kubermatic.k8c.io/cleanup-seed-preset"
)
type reconciler struct {
log *zap.SugaredLogger
masterClient ctrlruntimeclient.Client
seedClients kuberneteshelper.SeedClientMap
recorder record.EventRecorder
}
func Add(
masterMgr manager.Manager,
seedManagers map[string]manager.Manager,
log *zap.SugaredLogger,
) error {
log = log.Named(ControllerName)
r := &reconciler{
log: log,
masterClient: masterMgr.GetClient(),
seedClients: kuberneteshelper.SeedClientMap{},
recorder: masterMgr.GetEventRecorderFor(ControllerName),
}
c, err := controller.New(ControllerName, masterMgr, controller.Options{
Reconciler: r,
})
if err != nil {
return fmt.Errorf("failed to construct controller: %w", err)
}
for seedName, seedManager := range seedManagers {
r.seedClients[seedName] = seedManager.GetClient()
}
// Watch for changes to Preset
if err := c.Watch(source.Kind(masterMgr.GetCache(), &kubermaticv1.Preset{}), &handler.EnqueueRequestForObject{}); err != nil {
return fmt.Errorf("failed to watch preset: %w", err)
}
return nil
}
func (r *reconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
log := r.log.With("resource", request.Name)
log.Debug("Processing")
err := r.reconcile(ctx, log, request)
return reconcile.Result{}, err
}
func (r *reconciler) reconcile(ctx context.Context, log *zap.SugaredLogger, request reconcile.Request) error {
preset := &kubermaticv1.Preset{}
if err := r.masterClient.Get(ctx, request.NamespacedName, preset); err != nil {
return ctrlruntimeclient.IgnoreNotFound(err)
}
// handling deletion
if !preset.DeletionTimestamp.IsZero() {
if err := r.handleDeletion(ctx, log, preset); err != nil {
return fmt.Errorf("handling deletion of preset: %w", err)
}
return nil
}
if err := kuberneteshelper.TryAddFinalizer(ctx, r.masterClient, preset, cleanupFinalizer); err != nil {
return fmt.Errorf("failed to add finalizer: %w", err)
}
presetReconcilerFactories := []reconciling.NamedPresetReconcilerFactory{
presetReconcilerFactory(preset),
}
err := r.seedClients.Each(ctx, log, func(_ string, seedClient ctrlruntimeclient.Client, log *zap.SugaredLogger) error {
seedPreset := &kubermaticv1.Preset{}
if err := seedClient.Get(ctx, request.NamespacedName, seedPreset); err != nil && !apierrors.IsNotFound(err) {
return fmt.Errorf("failed to fetch preset on seed cluster: %w", err)
}
// see project-synchronizer's syncAllSeeds comment
if seedPreset.UID != "" && seedPreset.UID == preset.UID {
return nil
}
return reconciling.ReconcilePresets(ctx, presetReconcilerFactories, "", seedClient)
})
if err != nil {
r.recorder.Event(preset, corev1.EventTypeWarning, "ReconcilingError", err.Error())
return fmt.Errorf("reconciled preset: %s: %w", preset.Name, err)
}
return nil
}
func (r *reconciler) handleDeletion(ctx context.Context, log *zap.SugaredLogger, preset *kubermaticv1.Preset) error {
if kuberneteshelper.HasFinalizer(preset, cleanupFinalizer) {
if err := r.seedClients.Each(ctx, log, func(_ string, seedClient ctrlruntimeclient.Client, log *zap.SugaredLogger) error {
err := seedClient.Delete(ctx, &kubermaticv1.Preset{
ObjectMeta: metav1.ObjectMeta{
Name: preset.Name,
},
})
return ctrlruntimeclient.IgnoreNotFound(err)
}); err != nil {
return err
}
if err := kuberneteshelper.TryRemoveFinalizer(ctx, r.masterClient, preset, cleanupFinalizer); err != nil {
return fmt.Errorf("failed to remove preset finalizer %s: %w", preset.Name, err)
}
}
return nil
}
func presetReconcilerFactory(preset *kubermaticv1.Preset) reconciling.NamedPresetReconcilerFactory {
return func() (string, reconciling.PresetReconciler) {
return preset.Name, func(c *kubermaticv1.Preset) (*kubermaticv1.Preset, error) {
c.Name = preset.Name
c.Spec = preset.Spec
c.Labels = preset.Labels
return c, nil
}
}
}