-
Notifications
You must be signed in to change notification settings - Fork 462
/
plant_clientmap.go
115 lines (95 loc) · 4.11 KB
/
plant_clientmap.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
// Copyright (c) 2020 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 internal
import (
"context"
"fmt"
"github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/client/kubernetes/clientmap"
"github.com/gardener/gardener/pkg/utils"
)
// plantClientMap is a ClientMap for requesting and storing clients for Plant clusters.
type plantClientMap struct {
clientmap.ClientMap
}
// NewPlantClientMap creates a new plantClientMap with the given factory and logger.
func NewPlantClientMap(factory *PlantClientSetFactory, logger logrus.FieldLogger) clientmap.ClientMap {
return &plantClientMap{
ClientMap: NewGenericClientMap(factory, logger),
}
}
// PlantClientSetFactory is a ClientSetFactory that can produce new ClientSets to Plant clusters.
type PlantClientSetFactory struct {
// GetGardenClient is a func that will be used to get a client to the garden cluster to retrieve the Plant's
// kubeconfig secret.
GetGardenClient func(ctx context.Context) (kubernetes.Interface, error)
}
// CalculateClientSetHash calculates a SHA256 hash of the kubeconfig in the plant secret.
func (f *PlantClientSetFactory) CalculateClientSetHash(ctx context.Context, k clientmap.ClientSetKey) (string, error) {
key, ok := k.(PlantClientSetKey)
if !ok {
return "", fmt.Errorf("unsupported ClientSetKey: expected %T got %T", PlantClientSetKey{}, k)
}
secretRef, gardenClient, err := f.getPlantSecretRef(ctx, key)
if err != nil {
return "", err
}
kubeconfigSecret := &corev1.Secret{}
if err := gardenClient.Client().Get(ctx, client.ObjectKey{Namespace: key.Namespace, Name: secretRef.Name}, kubeconfigSecret); err != nil {
return "", err
}
return utils.ComputeSHA256Hex(kubeconfigSecret.Data[kubernetes.KubeConfig]), nil
}
// NewClientSet creates a new ClientSet for a Plant cluster.
func (f *PlantClientSetFactory) NewClientSet(ctx context.Context, k clientmap.ClientSetKey) (kubernetes.Interface, error) {
key, ok := k.(PlantClientSetKey)
if !ok {
return nil, fmt.Errorf("unsupported ClientSetKey: expected %T got %T", PlantClientSetKey{}, k)
}
secretRef, gardenClient, err := f.getPlantSecretRef(ctx, key)
if err != nil {
return nil, err
}
return NewClientFromSecret(ctx, gardenClient.Client(), key.Namespace, secretRef.Name,
kubernetes.WithClientOptions(client.Options{
Scheme: kubernetes.PlantScheme,
}),
)
}
func (f *PlantClientSetFactory) getPlantSecretRef(ctx context.Context, key PlantClientSetKey) (*corev1.LocalObjectReference, kubernetes.Interface, error) {
gardenClient, err := f.GetGardenClient(ctx)
if err != nil {
return nil, nil, fmt.Errorf("failed to get garden client: %w", err)
}
plant := &gardencorev1beta1.Plant{}
if err := gardenClient.Client().Get(ctx, client.ObjectKey{Namespace: key.Namespace, Name: key.Name}, plant); err != nil {
return nil, nil, fmt.Errorf("failed to get Plant object %q: %w", key.Key(), err)
}
if plant.Spec.SecretRef.Name == "" {
return nil, nil, fmt.Errorf("plant %q does not have a secretRef", key.Key())
}
return &plant.Spec.SecretRef, gardenClient, nil
}
// PlantClientSetKey is a ClientSetKey for a Plant cluster.
type PlantClientSetKey struct {
Namespace, Name string
}
// Key returns the string representation of the ClientSetKey.
func (k PlantClientSetKey) Key() string {
return k.Namespace + "/" + k.Name
}