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
|
// 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 cmd
import (
"fmt"
"os"
"github.com/google/go-containerregistry/pkg/crane"
"github.com/google/go-containerregistry/pkg/name"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/go-containerregistry/pkg/v1/layout"
"github.com/google/go-containerregistry/pkg/v1/partial"
"github.com/google/go-containerregistry/pkg/v1/remote"
"github.com/spf13/cobra"
)
// NewCmdPush creates a new cobra.Command for the push subcommand.
func NewCmdPush(options *[]crane.Option) *cobra.Command {
index := false
imageRefs := ""
cmd := &cobra.Command{
Use: "push PATH IMAGE",
Short: "Push local image contents to a remote registry",
Long: `If the PATH is a directory, it will be read as an OCI image layout. Otherwise, PATH is assumed to be a docker-style tarball.`,
Args: cobra.ExactArgs(2),
RunE: func(_ *cobra.Command, args []string) error {
path, tag := args[0], args[1]
img, err := loadImage(path, index)
if err != nil {
return err
}
o := crane.GetOptions(*options...)
ref, err := name.ParseReference(tag, o.Name...)
if err != nil {
return err
}
var h v1.Hash
switch t := img.(type) {
case v1.Image:
if err := remote.Write(ref, t, o.Remote...); err != nil {
return err
}
if h, err = t.Digest(); err != nil {
return err
}
case v1.ImageIndex:
if err := remote.WriteIndex(ref, t, o.Remote...); err != nil {
return err
}
if h, err = t.Digest(); err != nil {
return err
}
default:
return fmt.Errorf("cannot push type (%T) to registry", img)
}
digest := ref.Context().Digest(h.String())
if imageRefs != "" {
return os.WriteFile(imageRefs, []byte(digest.String()), 0600)
}
// TODO(mattmoor): think about printing the digest to standard out
// to facilitate command composition similar to ko build.
return nil
},
}
cmd.Flags().BoolVar(&index, "index", false, "push a collection of images as a single index, currently required if PATH contains multiple images")
cmd.Flags().StringVar(&imageRefs, "image-refs", "", "path to file where a list of the published image references will be written")
return cmd
}
func loadImage(path string, index bool) (partial.WithRawManifest, error) {
stat, err := os.Stat(path)
if err != nil {
return nil, err
}
if !stat.IsDir() {
img, err := crane.Load(path)
if err != nil {
return nil, fmt.Errorf("loading %s as tarball: %w", path, err)
}
return img, nil
}
l, err := layout.ImageIndexFromPath(path)
if err != nil {
return nil, fmt.Errorf("loading %s as OCI layout: %w", path, err)
}
if index {
return l, nil
}
m, err := l.IndexManifest()
if err != nil {
return nil, err
}
if len(m.Manifests) != 1 {
return nil, fmt.Errorf("layout contains %d entries, consider --index", len(m.Manifests))
}
desc := m.Manifests[0]
if desc.MediaType.IsImage() {
return l.Image(desc.Digest)
} else if desc.MediaType.IsIndex() {
return l.ImageIndex(desc.Digest)
}
return nil, fmt.Errorf("layout contains non-image (mediaType: %q), consider --index", desc.MediaType)
}
|
