-
Notifications
You must be signed in to change notification settings - Fork 14
/
gcpcm.go
199 lines (190 loc) · 6.37 KB
/
gcpcm.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
package gcpcm
import (
"context"
"fmt"
"strings"
certificatemanager "cloud.google.com/go/certificatemanager/apiv1"
"cloud.google.com/go/certificatemanager/apiv1/certificatemanagerpb"
"github.com/robertlestak/cert-manager-sync/pkg/state"
"github.com/robertlestak/cert-manager-sync/pkg/tlssecret"
log "github.com/sirupsen/logrus"
"google.golang.org/api/option"
"google.golang.org/genproto/protobuf/field_mask"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type GCPStore struct {
CertificateName string
ProjectID string
Location string
SecretName string
SecretNamespace string
CredentialsJSON string
// unexported
client *certificatemanager.Client
}
func (s *GCPStore) GetApiKey(ctx context.Context) error {
gopt := metav1.GetOptions{}
sc, err := state.KubeClient.CoreV1().Secrets(s.SecretNamespace).Get(ctx, s.SecretName, gopt)
if err != nil {
return err
}
if sc.Data["GOOGLE_APPLICATION_CREDENTIALS"] == nil {
return fmt.Errorf("GOOGLE_APPLICATION_CREDENTIALS not found in secret %s/%s", s.SecretNamespace, s.SecretName)
}
s.CredentialsJSON = string(sc.Data["GOOGLE_APPLICATION_CREDENTIALS"])
return nil
}
// secretToGCPInput converts a k8s secret to a properly-formatted GCP Import object
func (s *GCPStore) secretToGCPCert(secret *corev1.Secret) *certificatemanagerpb.Certificate {
fullChain := tlssecret.ParseSecret(secret).FullChain()
sm_cert := &certificatemanagerpb.Certificate_SelfManagedCertificate{
PemCertificate: string(fullChain),
PemPrivateKey: string(secret.Data["tls.key"]),
}
if s.CertificateName == "" {
s.CertificateName = "projects/" + s.ProjectID + "/locations/" + s.Location + "/certificates/" + secret.ObjectMeta.Namespace + "-" + secret.ObjectMeta.Name
}
return &certificatemanagerpb.Certificate{
Name: s.CertificateName,
Type: &certificatemanagerpb.Certificate_SelfManaged{SelfManaged: sm_cert}}
}
func (s *GCPStore) ParseCertificate(c *tlssecret.Certificate) error {
l := log.WithFields(log.Fields{
"action": "ParseCertificate",
})
l.Debugf("ParseCertificate")
if c.Annotations[state.OperatorName+"/gcp-project"] != "" {
s.ProjectID = c.Annotations[state.OperatorName+"/gcp-project"]
}
if c.Annotations[state.OperatorName+"/gcp-location"] != "" {
s.Location = c.Annotations[state.OperatorName+"/gcp-location"]
}
if c.Annotations[state.OperatorName+"/gcp-certificate-name"] != "" {
s.CertificateName = c.Annotations[state.OperatorName+"/gcp-certificate-name"]
}
if c.Annotations[state.OperatorName+"/gcp-secret-name"] != "" {
s.SecretName = c.Annotations[state.OperatorName+"/gcp-secret-name"]
}
// if secret name is in the format of "namespace/secretname" then parse it
if strings.Contains(s.SecretName, "/") {
s.SecretNamespace = strings.Split(s.SecretName, "/")[0]
s.SecretName = strings.Split(s.SecretName, "/")[1]
}
return nil
}
func (s *GCPStore) CreateCert(ctx context.Context, gcert *certificatemanagerpb.Certificate) error {
l := log.WithFields(log.Fields{
"action": "CreateCert",
})
l.Debugf("CreateCert")
req := &certificatemanagerpb.CreateCertificateRequest{
// TODO: Fill request struct fields.
// See https://pkg.go.dev/google.golang.org/genproto/googleapis/cloud/certificatemanager/v1#CreateCertificateRequest.
Parent: "projects/" + s.ProjectID + "/locations/" + s.Location,
CertificateId: strings.Split(s.CertificateName, "/")[5],
Certificate: gcert,
}
op, err := s.client.CreateCertificate(ctx, req)
if err != nil {
// TODO: Handle error.
l.Errorf("cannot create cert because of %s", err)
return err
}
resp, err := op.Wait(ctx)
if err != nil {
// TODO: Handle error.
l.Errorf("cannot complete creating cert because of %s", err)
return err
}
l.WithField("name", resp.Name).Debugf("Cert created in GCP as %s", resp.Name)
s.CertificateName = resp.Name
return nil
}
func (s *GCPStore) UpdateCert(ctx context.Context, gcert *certificatemanagerpb.Certificate) error {
l := log.WithFields(log.Fields{
"action": "UpdateCert",
})
l.Debugf("UpdateCert")
req := &certificatemanagerpb.UpdateCertificateRequest{
Certificate: gcert,
UpdateMask: &field_mask.FieldMask{
Paths: []string{"self_managed"},
},
}
op, err := s.client.UpdateCertificate(ctx, req)
if err != nil {
l.Errorf("cannot update cert because of %s", err)
return err
}
resp, err := op.Wait(ctx)
if err != nil {
l.Errorf("cannot complete updating cert because of %s", err)
return err
}
l.WithField("name", resp.Name).Debugf("Cert updated in GCP as %s", resp.Name)
return nil
}
func (s *GCPStore) Update(secret *corev1.Secret) error {
l := log.WithFields(log.Fields{
"action": "Update",
"store": "gcp",
"secretName": secret.ObjectMeta.Name,
"secretNamespace": secret.ObjectMeta.Namespace,
})
l.Debugf("Update")
c := tlssecret.ParseSecret(secret)
if err := s.ParseCertificate(c); err != nil {
l.WithError(err).Errorf("vault.ParseCertificate error")
return err
}
gcert := s.secretToGCPCert(secret)
ctx := context.Background()
var clientOpts []option.ClientOption
if s.SecretName != "" {
if err := s.GetApiKey(ctx); err != nil {
l.WithError(err).Errorf("gcp.GetApiKey error")
return err
}
opt := option.WithCredentialsJSON([]byte(s.CredentialsJSON))
clientOpts = append(clientOpts, opt)
}
client, err := certificatemanager.NewClient(ctx, clientOpts...)
if err != nil {
l.WithError(err).Errorf("certificatemanager.NewClient error")
return err
}
s.client = client
// if there is no secret name, this is the first time we are sending to GCP, create
if secret.ObjectMeta.Annotations[state.OperatorName+"/gcp-certificate-name"] == "" {
err = s.CreateCert(ctx, gcert)
if err != nil {
l.WithError(err).Errorf("vault.WriteSecret error")
return err
}
// update secret with new cert name
secret.ObjectMeta.Annotations[state.OperatorName+"/gcp-certificate-name"] = s.CertificateName
sc := state.KubeClient.CoreV1().Secrets(secret.ObjectMeta.Namespace)
uo := metav1.UpdateOptions{}
_, uerr := sc.Update(
context.Background(),
secret,
uo,
)
if uerr != nil {
l.WithError(uerr).Errorf("secret.Update error")
return uerr
}
} else {
// secret already has an GCP cert attached, update
err = s.UpdateCert(ctx, gcert)
if err != nil {
l.WithError(err).Errorf("vault.WriteSecret error")
return err
}
}
l.WithFields(log.Fields{
"certificateName": s.CertificateName,
}).Info("certificate synced")
return nil
}