-
Notifications
You must be signed in to change notification settings - Fork 1.2k
/
resolve.go
76 lines (64 loc) · 2.05 KB
/
resolve.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
/*
Copyright 2018 The Knative Authors
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 revision
import (
"fmt"
"net/http"
"github.com/google/go-containerregistry/pkg/authn/k8schain"
"github.com/google/go-containerregistry/pkg/name"
"github.com/google/go-containerregistry/pkg/v1/remote"
appsv1 "k8s.io/api/apps/v1"
"k8s.io/client-go/kubernetes"
)
type digestResolver struct {
client kubernetes.Interface
transport http.RoundTripper
registriesToSkip map[string]struct{}
}
// Resolve resolves the image references that use tags to digests.
func (r *digestResolver) Resolve(deploy *appsv1.Deployment) error {
pod := deploy.Spec.Template.Spec
opt := k8schain.Options{
Namespace: deploy.Namespace,
ServiceAccountName: pod.ServiceAccountName,
// ImagePullSecrets: Not possible via RevisionSpec, since we
// don't expose such a field.
}
kc, err := k8schain.New(r.client, opt)
if err != nil {
return err
}
for i := range pod.Containers {
if _, err := name.NewDigest(pod.Containers[i].Image, name.WeakValidation); err == nil {
// Already a digest
continue
}
tag, err := name.NewTag(pod.Containers[i].Image, name.WeakValidation)
if err != nil {
return err
}
if _, ok := r.registriesToSkip[tag.Registry.RegistryStr()]; ok {
continue
}
img, err := remote.Image(tag, remote.WithTransport(r.transport), remote.WithAuthFromKeychain(kc))
if err != nil {
return err
}
digest, err := img.Digest()
if err != nil {
return err
}
pod.Containers[i].Image = fmt.Sprintf("%s@%s", tag.Repository.String(), digest)
}
return nil
}