-
Notifications
You must be signed in to change notification settings - Fork 111
/
create_registry_secret_for_solver.go
157 lines (135 loc) · 4.58 KB
/
create_registry_secret_for_solver.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
/*
Copyright 2021 Flant CJSC
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 hooks
import (
"encoding/base64"
"fmt"
"github.com/flant/addon-operator/pkg/module_manager/go_hook"
"github.com/flant/addon-operator/sdk"
"github.com/flant/shell-operator/pkg/kube_events_manager/types"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"github.com/deckhouse/deckhouse/go_lib/set"
)
const (
challengesSnapshot = "challenges"
secretsSnapshot = "registry_secrets_namespaces"
solverSecretName = "acme-solver-deckhouse-regestry"
)
var _ = sdk.RegisterFunc(&go_hook.HookConfig{
Queue: "/modules/cert-manager/registry-secrets",
Kubernetes: []go_hook.KubernetesConfig{
{
Name: challengesSnapshot,
ApiVersion: "certmanager.k8s.io/v1alpha1",
Kind: "Challenge",
FilterFunc: filterNamespace,
},
{
Name: secretsSnapshot,
ApiVersion: "v1",
Kind: "Secret",
FilterFunc: filterNamespace,
NameSelector: &types.NameSelector{
MatchNames: []string{solverSecretName},
},
},
},
}, handleChallenge)
func filterNamespace(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
return obj.GetNamespace(), nil
}
func prepareSolverRegistrySecret(namespace, dockerCfg string) *v1.Secret {
return &v1.Secret{
TypeMeta: metav1.TypeMeta{
Kind: "Secret",
APIVersion: "v1",
},
ObjectMeta: metav1.ObjectMeta{
Name: solverSecretName,
Namespace: namespace,
Labels: map[string]string{
"heritage": "deckhouse",
"cert-manager.deckhouse.io/solver-registry-secret": "true",
"deckhouse.io/registry-secret": "true",
},
},
StringData: map[string]string{
".dockerconfigjson": dockerCfg,
},
Type: v1.SecretTypeDockerConfigJson,
}
}
// handleChallenge
// synopsis:
// For every namespace contained cert-manager challenge
// must be contains registry secret for pull challenge solver
// Because solver image re-pushed in deckhouse registry
// It need for "closed loop" infrastructure
// If in namespace delete all challenges then registry secret must be deleted
// We do not use ownerReferences because cer-manager may to create
// multiple challenges in one namespace in one time
// We may solve this in next way: We patch cert-manager for generating
// image pull-secrets name dynamically (ex PREFIX+challenge_resource_name)
// and generate one pullSecret per challenge
// But, cert manager has pr with adding pullImageSecrets through pod template
// and this solution not generate pullSecrets name dynamically
// In future we want to rid all of patches in cert-manager
// and use vanilla cert-manager
func handleChallenge(input *go_hook.HookInput) error {
registryCfgRaw := input.Values.Get("global.modulesImages.registryDockercfg").String()
if registryCfgRaw == "" {
return fmt.Errorf("registry config is empty")
}
// we need to decode from base64 str because 'SecretTypeDockerConfigJson'
// validate passed data as json config but global.modulesImages.registryDockercfg
// stored in base64
registryCfgBytes, err := base64.StdEncoding.DecodeString(registryCfgRaw)
if err != nil {
return fmt.Errorf("registry config cannot decoded from base64")
}
registryCfg := string(registryCfgBytes)
var (
challengesNss = set.NewFromSnapshot(input.Snapshots[challengesSnapshot])
secretsNss = set.NewFromSnapshot(input.Snapshots[secretsSnapshot])
)
// create secrets
for ns := range challengesNss {
// secret already exists in namespace. do not create or patch
if secretsNss.Has(ns) {
continue
}
secret := prepareSolverRegistrySecret(ns, registryCfg)
un, err := sdk.ToUnstructured(secret)
if err != nil {
return err
}
err = input.ObjectPatcher().CreateOrUpdateObject(un, "")
if err != nil {
return err
}
}
// gc secrets
for ns := range secretsNss {
if challengesNss.Has(ns) {
// a secret exists in namespace, and exists one more challenges. do not delete secret
continue
}
err := input.ObjectPatcher().DeleteObject("v1", "Secret", ns, solverSecretName, "")
if err != nil {
return err
}
}
return nil
}