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
|
// Copyright 2018 Google LLC All Rights Reserved.
//
// 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 crane
import (
"fmt"
"github.com/google/go-containerregistry/pkg/name"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/go-containerregistry/pkg/v1/remote"
)
func getImage(r string, opt ...Option) (v1.Image, name.Reference, error) {
o := makeOptions(opt...)
ref, err := name.ParseReference(r, o.Name...)
if err != nil {
return nil, nil, fmt.Errorf("parsing reference %q: %w", r, err)
}
img, err := remote.Image(ref, o.Remote...)
if err != nil {
return nil, nil, fmt.Errorf("reading image %q: %w", ref, err)
}
return img, ref, nil
}
func getManifest(r string, opt ...Option) (*remote.Descriptor, error) {
o := makeOptions(opt...)
ref, err := name.ParseReference(r, o.Name...)
if err != nil {
return nil, fmt.Errorf("parsing reference %q: %w", r, err)
}
return remote.Get(ref, o.Remote...)
}
// Head performs a HEAD request for a manifest and returns a content descriptor
// based on the registry's response.
func Head(r string, opt ...Option) (*v1.Descriptor, error) {
o := makeOptions(opt...)
ref, err := name.ParseReference(r, o.Name...)
if err != nil {
return nil, err
}
return remote.Head(ref, o.Remote...)
}
|
