-
Notifications
You must be signed in to change notification settings - Fork 2k
/
runtime.go
150 lines (139 loc) · 3.68 KB
/
runtime.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
// Copyright © 2023 sealos.
//
// 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 buildah
import (
"context"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/containers/buildah/pkg/parse"
"github.com/containers/common/libimage"
"github.com/containers/common/pkg/config"
imagestorage "github.com/containers/image/v5/storage"
"github.com/containers/image/v5/types"
"github.com/containers/storage"
"github.com/spf13/cobra"
)
type Runtime struct {
storage.Store
*libimage.Runtime
}
func getRuntimeWithStoreAndSystemContext(store storage.Store, sc *types.SystemContext) (*Runtime, error) {
libimageRuntime, err := libimage.RuntimeFromStore(store, &libimage.RuntimeOptions{SystemContext: sc})
if err != nil {
return nil, err
}
return &Runtime{
Store: store,
Runtime: libimageRuntime,
}, nil
}
func getRuntime(c *cobra.Command) (*Runtime, error) {
if c == nil {
c = rootCmd
}
store, err := getStore(c)
if err != nil {
return nil, err
}
sc, err := parse.SystemContextFromOptions(c)
if err != nil {
return nil, fmt.Errorf("building system context: %w", err)
}
return getRuntimeWithStoreAndSystemContext(store, sc)
}
func (r *Runtime) getLayerID(id string, diffType DiffType) (string, error) {
var lastErr error
if diffType&DiffImage == DiffImage {
toImage, _, err := r.Runtime.LookupImage(id, nil)
if err == nil {
return toImage.TopLayer(), nil
}
lastErr = err
}
if diffType&DiffContainer == DiffContainer {
toCtr, err := r.Store.Container(id)
if err == nil {
return toCtr.LayerID, nil
}
lastErr = err
}
if diffType == DiffAll {
toLayer, err := r.Store.Layer(id)
if err == nil {
return toLayer.ID, nil
}
lastErr = err
}
return "", fmt.Errorf("%s not found: %w", id, lastErr)
}
func (r *Runtime) PullOrLoadImages(ctx context.Context, args []string, options libimage.CopyOptions) ([]string, error) {
copyOpts := options
if copyOpts.Writer == nil {
copyOpts.Writer = os.Stderr
}
var result []string
for i := range args {
name := args[i]
tr, ref, err := parseTransportAndReference(imagestorage.Transport, name)
if err != nil {
return nil, err
}
switch tr.Name() {
case TransportDocker, TransportContainersStorage:
if tr.Name() == TransportDocker {
ref = strings.TrimPrefix(ref, "//")
}
pullImages, err := r.Runtime.Pull(ctx, ref, config.PullPolicyMissing, &libimage.PullOptions{
CopyOptions: copyOpts,
})
if err != nil {
return nil, err
}
name = pullImages[0].ID()
if names := pullImages[0].Names(); len(names) > 0 {
name = names[0]
}
default:
if !filepath.IsAbs(ref) {
cwd, err := os.Getwd()
if err != nil {
return nil, err
}
ref = filepath.Join(cwd, ref)
}
images, err := r.Runtime.Load(ctx, ref, &libimage.LoadOptions{
CopyOptions: copyOpts,
})
if err != nil {
return nil, err
}
name = images[0]
}
result = append(result, name)
}
return result, nil
}
func (r *Runtime) getLayerIDs(from, to string, diffType DiffType) (string, string, error) {
fromLayer, err := r.getLayerID(from, diffType)
if err != nil {
return "", "", err
}
toLayer, err := r.getLayerID(to, diffType)
if err != nil {
return "", "", err
}
return fromLayer, toLayer, nil
}