/
images.go
348 lines (306 loc) · 8.6 KB
/
images.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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
package main
import (
"context"
"encoding/json"
"fmt"
"sort"
"strings"
"time"
buildahcli "github.com/containers/buildah/pkg/cli"
"github.com/containers/buildah/pkg/formats"
"github.com/containers/buildah/pkg/parse"
"github.com/containers/common/libimage"
"github.com/docker/go-units"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
const none = "<none>"
type jsonImage struct {
ID string `json:"id"`
Names []string `json:"names"`
Digest string `json:"digest"`
CreatedAt string `json:"createdat"`
Size string `json:"size"`
Created int64 `json:"created"`
CreatedAtRaw time.Time `json:"createdatraw"`
ReadOnly bool `json:"readonly"`
History []string `json:"history"`
}
type imageOutputParams struct {
Tag string
ID string
Name string
Digest string
Created int64
CreatedAt string
Size string
CreatedAtRaw time.Time
ReadOnly bool
History string
}
type imageOptions struct {
all bool
digests bool
format string
json bool
noHeading bool
truncate bool
quiet bool
readOnly bool
history bool
}
type imageResults struct {
imageOptions
filter string
}
var imagesHeader = map[string]string{
"Name": "REPOSITORY",
"Tag": "TAG",
"ID": "IMAGE ID",
"CreatedAt": "CREATED",
"Size": "SIZE",
"ReadOnly": "R/O",
"History": "HISTORY",
}
func init() {
var (
opts imageResults
imagesDescription = "\n Lists locally stored images."
)
imagesCommand := &cobra.Command{
Use: "images",
Short: "List images in local storage",
Long: imagesDescription,
RunE: func(cmd *cobra.Command, args []string) error {
return imagesCmd(cmd, args, &opts)
},
Example: `buildah images --all
buildah images [imageName]
buildah images --format '{{.ID}} {{.Name}} {{.Size}} {{.CreatedAtRaw}}'`,
}
imagesCommand.SetUsageTemplate(UsageTemplate())
flags := imagesCommand.Flags()
flags.SetInterspersed(false)
flags.BoolVarP(&opts.all, "all", "a", false, "show all images, including intermediate images from a build")
flags.BoolVar(&opts.digests, "digests", false, "show digests")
flags.StringVarP(&opts.filter, "filter", "f", "", "filter output based on conditions provided")
flags.StringVar(&opts.format, "format", "", "pretty-print images using a Go template")
flags.BoolVar(&opts.json, "json", false, "output in JSON format")
flags.BoolVarP(&opts.noHeading, "noheading", "n", false, "do not print column headings")
// TODO needs alias here -- to `notruncate`
flags.BoolVar(&opts.truncate, "no-trunc", false, "do not truncate output")
flags.BoolVarP(&opts.quiet, "quiet", "q", false, "display only image IDs")
flags.BoolVarP(&opts.history, "history", "", false, "display the image name history")
rootCmd.AddCommand(imagesCommand)
}
func imagesCmd(c *cobra.Command, args []string, iopts *imageResults) error {
if len(args) > 0 {
if iopts.all {
return errors.Errorf("when using the --all switch, you may not pass any images names or IDs")
}
if err := buildahcli.VerifyFlagsArgsOrder(args); err != nil {
return err
}
if len(args) > 1 {
return errors.New("'buildah images' requires at most 1 argument")
}
}
store, err := getStore(c)
if err != nil {
return err
}
systemContext, err := parse.SystemContextFromOptions(c)
if err != nil {
return errors.Wrapf(err, "error building system context")
}
runtime, err := libimage.RuntimeFromStore(store, &libimage.RuntimeOptions{SystemContext: systemContext})
if err != nil {
return err
}
ctx := context.Background()
options := &libimage.ListImagesOptions{}
if iopts.filter != "" {
options.Filters = []string{iopts.filter}
}
if !iopts.all {
options.Filters = append(options.Filters, "intermediate=false")
}
images, err := runtime.ListImages(ctx, args, options)
if err != nil {
return err
}
if iopts.quiet && iopts.format != "" {
return errors.Errorf("quiet and format are mutually exclusive")
}
opts := imageOptions{
all: iopts.all,
digests: iopts.digests,
format: iopts.format,
json: iopts.json,
noHeading: iopts.noHeading,
truncate: !iopts.truncate,
quiet: iopts.quiet,
history: iopts.history,
}
if opts.json {
return formatImagesJSON(images, opts)
}
return formatImages(images, opts)
}
func outputHeader(opts imageOptions) string {
if opts.format != "" {
return strings.Replace(opts.format, `\t`, "\t", -1)
}
if opts.quiet {
return formats.IDString
}
format := "table {{.Name}}\t{{.Tag}}\t"
if opts.noHeading {
format = "{{.Name}}\t{{.Tag}}\t"
}
if opts.digests {
format += "{{.Digest}}\t"
}
format += "{{.ID}}\t{{.CreatedAt}}\t{{.Size}}"
if opts.readOnly {
format += "\t{{.ReadOnly}}"
}
if opts.history {
format += "\t{{.History}}"
}
return format
}
func formatImagesJSON(images []*libimage.Image, opts imageOptions) error {
jsonImages := []jsonImage{}
for _, image := range images {
// Copy the base data over to the output param.
size, err := image.Size()
if err != nil {
return err
}
created := image.Created()
jsonImages = append(jsonImages,
jsonImage{
CreatedAtRaw: created,
Created: created.Unix(),
CreatedAt: units.HumanDuration(time.Since(created)) + " ago",
Digest: image.Digest().String(),
ID: truncateID(image.ID(), opts.truncate),
Names: image.Names(),
ReadOnly: image.IsReadOnly(),
Size: formattedSize(size),
})
}
data, err := json.MarshalIndent(jsonImages, "", " ")
if err != nil {
return err
}
fmt.Printf("%s\n", data)
return nil
}
type imagesSorted []imageOutputParams
func (a imagesSorted) Less(i, j int) bool {
return a[i].CreatedAtRaw.After(a[j].CreatedAtRaw)
}
func (a imagesSorted) Len() int {
return len(a)
}
func (a imagesSorted) Swap(i, j int) {
a[i], a[j] = a[j], a[i]
}
func formatImages(images []*libimage.Image, opts imageOptions) error {
var outputData imagesSorted
for _, image := range images {
var outputParam imageOutputParams
size, err := image.Size()
if err != nil {
return err
}
created := image.Created()
outputParam.CreatedAtRaw = created
outputParam.Created = created.Unix()
outputParam.CreatedAt = units.HumanDuration(time.Since(created)) + " ago"
outputParam.Digest = image.Digest().String()
outputParam.ID = truncateID(image.ID(), opts.truncate)
outputParam.Size = formattedSize(size)
outputParam.ReadOnly = image.IsReadOnly()
repoTags, err := image.NamedRepoTags()
if err != nil {
return err
}
nameTagPairs, err := libimage.ToNameTagPairs(repoTags)
if err != nil {
return err
}
for _, pair := range nameTagPairs {
newParam := outputParam
newParam.Name = pair.Name
newParam.Tag = pair.Tag
newParam.History = formatHistory(image.NamesHistory(), pair.Name, pair.Tag)
outputData = append(outputData, newParam)
// `images -q` should a given ID only once.
if opts.quiet {
break
}
}
}
sort.Sort(outputData)
out := formats.StdoutTemplateArray{Output: imagesToGeneric(outputData), Template: outputHeader(opts), Fields: imagesHeader}
return formats.Writer(out).Out()
}
func formatHistory(history []string, name, tag string) string {
if len(history) == 0 {
return none
}
// Skip the first history entry if already existing as name
if fmt.Sprintf("%s:%s", name, tag) == history[0] {
if len(history) == 1 {
return none
}
return strings.Join(history[1:], ", ")
}
return strings.Join(history, ", ")
}
func truncateID(id string, truncate bool) string {
if !truncate {
return "sha256:" + id
}
idTruncLength := 12
if len(id) > idTruncLength {
return id[:idTruncLength]
}
return id
}
func imagesToGeneric(templParams []imageOutputParams) (genericParams []interface{}) {
if len(templParams) > 0 {
for _, v := range templParams {
genericParams = append(genericParams, interface{}(v))
}
}
return genericParams
}
func formattedSize(size int64) string {
suffixes := [5]string{"B", "KB", "MB", "GB", "TB"}
count := 0
formattedSize := float64(size)
for formattedSize >= 1000 && count < 4 {
formattedSize /= 1000
count++
}
return fmt.Sprintf("%.3g %s", formattedSize, suffixes[count])
}
func matchesID(imageID, argID string) bool {
return strings.HasPrefix(imageID, argID)
}
func matchesReference(name, argName string) bool {
if argName == "" {
return true
}
splitName := strings.Split(name, ":")
// If the arg contains a tag, we handle it differently than if it does not
if strings.Contains(argName, ":") {
splitArg := strings.Split(argName, ":")
return strings.HasSuffix(splitName[0], splitArg[0]) && (splitName[1] == splitArg[1])
}
return strings.HasSuffix(splitName[0], argName)
}