-
Notifications
You must be signed in to change notification settings - Fork 0
/
client.go
2493 lines (2219 loc) · 67.4 KB
/
client.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
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
package api
import (
"bufio"
"bytes"
"crypto/tls"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"github.com/dotcloud/docker/archive"
"github.com/dotcloud/docker/dockerversion"
"github.com/dotcloud/docker/engine"
"github.com/dotcloud/docker/nat"
flag "github.com/dotcloud/docker/pkg/mflag"
"github.com/dotcloud/docker/pkg/signal"
"github.com/dotcloud/docker/pkg/term"
"github.com/dotcloud/docker/registry"
"github.com/dotcloud/docker/runconfig"
"github.com/dotcloud/docker/utils"
"io"
"io/ioutil"
"net"
"net/http"
"net/http/httputil"
"net/url"
"os"
"os/exec"
gosignal "os/signal"
"path"
"reflect"
"regexp"
goruntime "runtime"
"strconv"
"strings"
"syscall"
"text/tabwriter"
"text/template"
"time"
)
var funcMap = template.FuncMap{
"json": func(v interface{}) string {
a, _ := json.Marshal(v)
return string(a)
},
}
var (
ErrConnectionRefused = errors.New("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
)
func (cli *DockerCli) getMethod(name string) (func(...string) error, bool) {
methodName := "Cmd" + strings.ToUpper(name[:1]) + strings.ToLower(name[1:])
method := reflect.ValueOf(cli).MethodByName(methodName)
if !method.IsValid() {
return nil, false
}
return method.Interface().(func(...string) error), true
}
func (cli *DockerCli) ParseCommands(args ...string) error {
if len(args) > 0 {
method, exists := cli.getMethod(args[0])
if !exists {
fmt.Println("Error: Command not found:", args[0])
return cli.CmdHelp(args[1:]...)
}
return method(args[1:]...)
}
return cli.CmdHelp(args...)
}
func (cli *DockerCli) CmdHelp(args ...string) error {
if len(args) > 0 {
method, exists := cli.getMethod(args[0])
if !exists {
fmt.Fprintf(cli.err, "Error: Command not found: %s\n", args[0])
} else {
method("--help")
return nil
}
}
help := fmt.Sprintf("Usage: docker [OPTIONS] COMMAND [arg...]\n -H=[unix://%s]: tcp://host:port to bind/connect to or unix://path/to/socket to use\n\nA self-sufficient runtime for linux containers.\n\nCommands:\n", DEFAULTUNIXSOCKET)
for _, command := range [][]string{
{"attach", "Attach to a running container"},
{"build", "Build a container from a Dockerfile"},
{"commit", "Create a new image from a container's changes"},
{"cp", "Copy files/folders from the containers filesystem to the host path"},
{"diff", "Inspect changes on a container's filesystem"},
{"events", "Get real time events from the server"},
{"export", "Stream the contents of a container as a tar archive"},
{"history", "Show the history of an image"},
{"images", "List images"},
{"import", "Create a new filesystem image from the contents of a tarball"},
{"info", "Display system-wide information"},
{"insert", "Insert a file in an image"},
{"inspect", "Return low-level information on a container"},
{"kill", "Kill a running container"},
{"load", "Load an image from a tar archive"},
{"login", "Register or Login to the docker registry server"},
{"logs", "Fetch the logs of a container"},
{"port", "Lookup the public-facing port which is NAT-ed to PRIVATE_PORT"},
{"ps", "List containers"},
{"pull", "Pull an image or a repository from the docker registry server"},
{"push", "Push an image or a repository to the docker registry server"},
{"restart", "Restart a running container"},
{"rm", "Remove one or more containers"},
{"rmi", "Remove one or more images"},
{"run", "Run a command in a new container"},
{"save", "Save an image to a tar archive"},
{"search", "Search for an image in the docker index"},
{"start", "Start a stopped container"},
{"stop", "Stop a running container"},
{"tag", "Tag an image into a repository"},
{"top", "Lookup the running processes of a container"},
{"version", "Show the docker version information"},
{"wait", "Block until a container stops, then print its exit code"},
} {
help += fmt.Sprintf(" %-10.10s%s\n", command[0], command[1])
}
fmt.Fprintf(cli.err, "%s\n", help)
return nil
}
func (cli *DockerCli) CmdInsert(args ...string) error {
cmd := cli.Subcmd("insert", "IMAGE URL PATH", "Insert a file from URL in the IMAGE at PATH")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() != 3 {
cmd.Usage()
return nil
}
v := url.Values{}
v.Set("url", cmd.Arg(1))
v.Set("path", cmd.Arg(2))
return cli.stream("POST", "/images/"+cmd.Arg(0)+"/insert?"+v.Encode(), nil, cli.out, nil)
}
func (cli *DockerCli) CmdBuild(args ...string) error {
cmd := cli.Subcmd("build", "[OPTIONS] PATH | URL | -", "Build a new container image from the source code at PATH")
tag := cmd.String([]string{"t", "-tag"}, "", "Repository name (and optionally a tag) to be applied to the resulting image in case of success")
suppressOutput := cmd.Bool([]string{"q", "-quiet"}, false, "Suppress the verbose output generated by the containers")
noCache := cmd.Bool([]string{"#no-cache", "-no-cache"}, false, "Do not use cache when building the image")
rm := cmd.Bool([]string{"#rm", "-rm"}, true, "Remove intermediate containers after a successful build")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() != 1 {
cmd.Usage()
return nil
}
var (
context archive.Archive
isRemote bool
err error
)
_, err = exec.LookPath("git")
hasGit := err == nil
if cmd.Arg(0) == "-" {
// As a special case, 'docker build -' will build from an empty context with the
// contents of stdin as a Dockerfile
dockerfile, err := ioutil.ReadAll(cli.in)
if err != nil {
return err
}
context, err = archive.Generate("Dockerfile", string(dockerfile))
} else if utils.IsURL(cmd.Arg(0)) && (!utils.IsGIT(cmd.Arg(0)) || !hasGit) {
isRemote = true
} else {
root := cmd.Arg(0)
if utils.IsGIT(root) {
remoteURL := cmd.Arg(0)
if !strings.HasPrefix(remoteURL, "git://") && !strings.HasPrefix(remoteURL, "git@") && !utils.IsURL(remoteURL) {
remoteURL = "https://" + remoteURL
}
root, err = ioutil.TempDir("", "docker-build-git")
if err != nil {
return err
}
defer os.RemoveAll(root)
if output, err := exec.Command("git", "clone", "--recursive", remoteURL, root).CombinedOutput(); err != nil {
return fmt.Errorf("Error trying to use git: %s (%s)", err, output)
}
}
if _, err := os.Stat(root); err != nil {
return err
}
filename := path.Join(root, "Dockerfile")
if _, err = os.Stat(filename); os.IsNotExist(err) {
return fmt.Errorf("no Dockerfile found in %s", cmd.Arg(0))
}
context, err = archive.Tar(root, archive.Uncompressed)
}
var body io.Reader
// Setup an upload progress bar
// FIXME: ProgressReader shouldn't be this annoying to use
if context != nil {
sf := utils.NewStreamFormatter(false)
body = utils.ProgressReader(context, 0, cli.err, sf, true, "", "Uploading context")
}
// Upload the build context
v := &url.Values{}
v.Set("t", *tag)
if *suppressOutput {
v.Set("q", "1")
}
if isRemote {
v.Set("remote", cmd.Arg(0))
}
if *noCache {
v.Set("nocache", "1")
}
if *rm {
v.Set("rm", "1")
}
cli.LoadConfigFile()
headers := http.Header(make(map[string][]string))
buf, err := json.Marshal(cli.configFile)
if err != nil {
return err
}
headers.Add("X-Registry-Config", base64.URLEncoding.EncodeToString(buf))
if context != nil {
headers.Set("Content-Type", "application/tar")
}
err = cli.stream("POST", fmt.Sprintf("/build?%s", v.Encode()), body, cli.out, headers)
if jerr, ok := err.(*utils.JSONError); ok {
// If no error code is set, default to 1
if jerr.Code == 0 {
jerr.Code = 1
}
return &utils.StatusError{Status: jerr.Message, StatusCode: jerr.Code}
}
return err
}
// 'docker login': login / register a user to registry service.
func (cli *DockerCli) CmdLogin(args ...string) error {
cmd := cli.Subcmd("login", "[OPTIONS] [SERVER]", "Register or Login to a docker registry server, if no server is specified \""+registry.IndexServerAddress()+"\" is the default.")
var username, password, email string
cmd.StringVar(&username, []string{"u", "-username"}, "", "Username")
cmd.StringVar(&password, []string{"p", "-password"}, "", "Password")
cmd.StringVar(&email, []string{"e", "-email"}, "", "Email")
err := cmd.Parse(args)
if err != nil {
return nil
}
serverAddress := registry.IndexServerAddress()
if len(cmd.Args()) > 0 {
serverAddress = cmd.Arg(0)
}
promptDefault := func(prompt string, configDefault string) {
if configDefault == "" {
fmt.Fprintf(cli.out, "%s: ", prompt)
} else {
fmt.Fprintf(cli.out, "%s (%s): ", prompt, configDefault)
}
}
readInput := func(in io.Reader, out io.Writer) string {
reader := bufio.NewReader(in)
line, _, err := reader.ReadLine()
if err != nil {
fmt.Fprintln(out, err.Error())
os.Exit(1)
}
return string(line)
}
cli.LoadConfigFile()
authconfig, ok := cli.configFile.Configs[serverAddress]
if !ok {
authconfig = registry.AuthConfig{}
}
if username == "" {
promptDefault("Username", authconfig.Username)
username = readInput(cli.in, cli.out)
if username == "" {
username = authconfig.Username
}
}
if username != authconfig.Username {
if password == "" {
oldState, _ := term.SaveState(cli.terminalFd)
fmt.Fprintf(cli.out, "Password: ")
term.DisableEcho(cli.terminalFd, oldState)
password = readInput(cli.in, cli.out)
fmt.Fprint(cli.out, "\n")
term.RestoreTerminal(cli.terminalFd, oldState)
if password == "" {
return fmt.Errorf("Error : Password Required")
}
}
if email == "" {
promptDefault("Email", authconfig.Email)
email = readInput(cli.in, cli.out)
if email == "" {
email = authconfig.Email
}
}
} else {
password = authconfig.Password
email = authconfig.Email
}
authconfig.Username = username
authconfig.Password = password
authconfig.Email = email
authconfig.ServerAddress = serverAddress
cli.configFile.Configs[serverAddress] = authconfig
stream, statusCode, err := cli.call("POST", "/auth", cli.configFile.Configs[serverAddress], false)
if statusCode == 401 {
delete(cli.configFile.Configs, serverAddress)
registry.SaveConfig(cli.configFile)
return err
}
if err != nil {
return err
}
var out2 engine.Env
err = out2.Decode(stream)
if err != nil {
cli.configFile, _ = registry.LoadConfig(os.Getenv("HOME"))
return err
}
registry.SaveConfig(cli.configFile)
if out2.Get("Status") != "" {
fmt.Fprintf(cli.out, "%s\n", out2.Get("Status"))
}
return nil
}
// 'docker wait': block until a container stops
func (cli *DockerCli) CmdWait(args ...string) error {
cmd := cli.Subcmd("wait", "CONTAINER [CONTAINER...]", "Block until a container stops, then print its exit code.")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
var encounteredError error
for _, name := range cmd.Args() {
status, err := waitForExit(cli, name)
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to wait one or more containers")
} else {
fmt.Fprintf(cli.out, "%d\n", status)
}
}
return encounteredError
}
// 'docker version': show version information
func (cli *DockerCli) CmdVersion(args ...string) error {
cmd := cli.Subcmd("version", "", "Show the docker version information.")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() > 0 {
cmd.Usage()
return nil
}
if dockerversion.VERSION != "" {
fmt.Fprintf(cli.out, "Client version: %s\n", dockerversion.VERSION)
}
fmt.Fprintf(cli.out, "Go version (client): %s\n", goruntime.Version())
if dockerversion.GITCOMMIT != "" {
fmt.Fprintf(cli.out, "Git commit (client): %s\n", dockerversion.GITCOMMIT)
}
body, _, err := readBody(cli.call("GET", "/version", nil, false))
if err != nil {
return err
}
out := engine.NewOutput()
remoteVersion, err := out.AddEnv()
if err != nil {
utils.Errorf("Error reading remote version: %s\n", err)
return err
}
if _, err := out.Write(body); err != nil {
utils.Errorf("Error reading remote version: %s\n", err)
return err
}
out.Close()
fmt.Fprintf(cli.out, "Server version: %s\n", remoteVersion.Get("Version"))
fmt.Fprintf(cli.out, "Git commit (server): %s\n", remoteVersion.Get("GitCommit"))
fmt.Fprintf(cli.out, "Go version (server): %s\n", remoteVersion.Get("GoVersion"))
release := utils.GetReleaseVersion()
if release != "" {
fmt.Fprintf(cli.out, "Last stable version: %s", release)
if (dockerversion.VERSION != "" || remoteVersion.Exists("Version")) && (strings.Trim(dockerversion.VERSION, "-dev") != release || strings.Trim(remoteVersion.Get("Version"), "-dev") != release) {
fmt.Fprintf(cli.out, ", please update docker")
}
fmt.Fprintf(cli.out, "\n")
}
return nil
}
// 'docker info': display system-wide information.
func (cli *DockerCli) CmdInfo(args ...string) error {
cmd := cli.Subcmd("info", "", "Display system-wide information")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() > 0 {
cmd.Usage()
return nil
}
body, _, err := readBody(cli.call("GET", "/info", nil, false))
if err != nil {
return err
}
out := engine.NewOutput()
remoteInfo, err := out.AddEnv()
if err != nil {
return err
}
if _, err := out.Write(body); err != nil {
utils.Errorf("Error reading remote info: %s\n", err)
return err
}
out.Close()
fmt.Fprintf(cli.out, "Containers: %d\n", remoteInfo.GetInt("Containers"))
fmt.Fprintf(cli.out, "Images: %d\n", remoteInfo.GetInt("Images"))
fmt.Fprintf(cli.out, "Storage Driver: %s\n", remoteInfo.Get("Driver"))
var driverStatus [][2]string
if err := remoteInfo.GetJson("DriverStatus", &driverStatus); err != nil {
return err
}
for _, pair := range driverStatus {
fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1])
}
fmt.Fprintf(cli.out, "Execution Driver: %s\n", remoteInfo.Get("ExecutionDriver"))
fmt.Fprintf(cli.out, "Kernel Version: %s\n", remoteInfo.Get("KernelVersion"))
if remoteInfo.GetBool("Debug") || os.Getenv("DEBUG") != "" {
fmt.Fprintf(cli.out, "Debug mode (server): %v\n", remoteInfo.GetBool("Debug"))
fmt.Fprintf(cli.out, "Debug mode (client): %v\n", os.Getenv("DEBUG") != "")
fmt.Fprintf(cli.out, "Fds: %d\n", remoteInfo.GetInt("NFd"))
fmt.Fprintf(cli.out, "Goroutines: %d\n", remoteInfo.GetInt("NGoroutines"))
fmt.Fprintf(cli.out, "EventsListeners: %d\n", remoteInfo.GetInt("NEventsListener"))
if initSha1 := remoteInfo.Get("InitSha1"); initSha1 != "" {
fmt.Fprintf(cli.out, "Init SHA1: %s\n", initSha1)
}
if initPath := remoteInfo.Get("InitPath"); initPath != "" {
fmt.Fprintf(cli.out, "Init Path: %s\n", initPath)
}
}
if len(remoteInfo.GetList("IndexServerAddress")) != 0 {
cli.LoadConfigFile()
u := cli.configFile.Configs[remoteInfo.Get("IndexServerAddress")].Username
if len(u) > 0 {
fmt.Fprintf(cli.out, "Username: %v\n", u)
fmt.Fprintf(cli.out, "Registry: %v\n", remoteInfo.GetList("IndexServerAddress"))
}
}
if !remoteInfo.GetBool("MemoryLimit") {
fmt.Fprintf(cli.err, "WARNING: No memory limit support\n")
}
if !remoteInfo.GetBool("SwapLimit") {
fmt.Fprintf(cli.err, "WARNING: No swap limit support\n")
}
if !remoteInfo.GetBool("IPv4Forwarding") {
fmt.Fprintf(cli.err, "WARNING: IPv4 forwarding is disabled.\n")
}
return nil
}
func (cli *DockerCli) CmdStop(args ...string) error {
cmd := cli.Subcmd("stop", "[OPTIONS] CONTAINER [CONTAINER...]", "Stop a running container (Send SIGTERM)")
nSeconds := cmd.Int([]string{"t", "-time"}, 10, "Number of seconds to wait for the container to stop.")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
v := url.Values{}
v.Set("t", strconv.Itoa(*nSeconds))
var encounteredError error
for _, name := range cmd.Args() {
_, _, err := readBody(cli.call("POST", "/containers/"+name+"/stop?"+v.Encode(), nil, false))
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to stop one or more containers")
} else {
fmt.Fprintf(cli.out, "%s\n", name)
}
}
return encounteredError
}
func (cli *DockerCli) CmdRestart(args ...string) error {
cmd := cli.Subcmd("restart", "[OPTIONS] CONTAINER [CONTAINER...]", "Restart a running container")
nSeconds := cmd.Int([]string{"t", "-time"}, 10, "Number of seconds to wait for the container to stop. Default=10")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
v := url.Values{}
v.Set("t", strconv.Itoa(*nSeconds))
var encounteredError error
for _, name := range cmd.Args() {
_, _, err := readBody(cli.call("POST", "/containers/"+name+"/restart?"+v.Encode(), nil, false))
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to restart one or more containers")
} else {
fmt.Fprintf(cli.out, "%s\n", name)
}
}
return encounteredError
}
func (cli *DockerCli) forwardAllSignals(cid string) chan os.Signal {
sigc := make(chan os.Signal, 1)
signal.CatchAll(sigc)
go func() {
for s := range sigc {
if s == syscall.SIGCHLD {
continue
}
var sig string
for sigStr, sigN := range signal.SignalMap {
if sigN == s {
sig = sigStr
break
}
}
if sig == "" {
utils.Errorf("Unsupported signal: %d. Discarding.", s)
}
if _, _, err := readBody(cli.call("POST", fmt.Sprintf("/containers/%s/kill?signal=%s", cid, sig), nil, false)); err != nil {
utils.Debugf("Error sending signal: %s", err)
}
}
}()
return sigc
}
func (cli *DockerCli) CmdStart(args ...string) error {
cmd := cli.Subcmd("start", "CONTAINER [CONTAINER...]", "Restart a stopped container")
attach := cmd.Bool([]string{"a", "-attach"}, false, "Attach container's stdout/stderr and forward all signals to the process")
openStdin := cmd.Bool([]string{"i", "-interactive"}, false, "Attach container's stdin")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
var cErr chan error
var tty bool
if *attach || *openStdin {
if cmd.NArg() > 1 {
return fmt.Errorf("You cannot start and attach multiple containers at once.")
}
body, _, err := readBody(cli.call("GET", "/containers/"+cmd.Arg(0)+"/json", nil, false))
if err != nil {
return err
}
container := &Container{}
err = json.Unmarshal(body, container)
if err != nil {
return err
}
tty = container.Config.Tty
if !container.Config.Tty {
sigc := cli.forwardAllSignals(cmd.Arg(0))
defer signal.StopCatch(sigc)
}
var in io.ReadCloser
v := url.Values{}
v.Set("stream", "1")
if *openStdin && container.Config.OpenStdin {
v.Set("stdin", "1")
in = cli.in
}
v.Set("stdout", "1")
v.Set("stderr", "1")
cErr = utils.Go(func() error {
return cli.hijack("POST", "/containers/"+cmd.Arg(0)+"/attach?"+v.Encode(), container.Config.Tty, in, cli.out, cli.err, nil)
})
}
var encounteredError error
for _, name := range cmd.Args() {
_, _, err := readBody(cli.call("POST", "/containers/"+name+"/start", nil, false))
if err != nil {
if !*attach || !*openStdin {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to start one or more containers")
}
} else {
if !*attach || !*openStdin {
fmt.Fprintf(cli.out, "%s\n", name)
}
}
}
if encounteredError != nil {
if *openStdin || *attach {
cli.in.Close()
<-cErr
}
return encounteredError
}
if *openStdin || *attach {
if tty && cli.isTerminal {
if err := cli.monitorTtySize(cmd.Arg(0)); err != nil {
utils.Errorf("Error monitoring TTY size: %s\n", err)
}
}
return <-cErr
}
return nil
}
func (cli *DockerCli) CmdInspect(args ...string) error {
cmd := cli.Subcmd("inspect", "CONTAINER|IMAGE [CONTAINER|IMAGE...]", "Return low-level information on a container/image")
tmplStr := cmd.String([]string{"f", "#format", "-format"}, "", "Format the output using the given go template.")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
var tmpl *template.Template
if *tmplStr != "" {
var err error
if tmpl, err = template.New("").Funcs(funcMap).Parse(*tmplStr); err != nil {
fmt.Fprintf(cli.err, "Template parsing error: %v\n", err)
return &utils.StatusError{StatusCode: 64,
Status: "Template parsing error: " + err.Error()}
}
}
indented := new(bytes.Buffer)
indented.WriteByte('[')
status := 0
for _, name := range cmd.Args() {
obj, _, err := readBody(cli.call("GET", "/containers/"+name+"/json", nil, false))
if err != nil {
obj, _, err = readBody(cli.call("GET", "/images/"+name+"/json", nil, false))
if err != nil {
if strings.Contains(err.Error(), "No such") {
fmt.Fprintf(cli.err, "Error: No such image or container: %s\n", name)
} else {
fmt.Fprintf(cli.err, "%s", err)
}
status = 1
continue
}
}
if tmpl == nil {
if err = json.Indent(indented, obj, "", " "); err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
status = 1
continue
}
} else {
// Has template, will render
var value interface{}
if err := json.Unmarshal(obj, &value); err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
status = 1
continue
}
if err := tmpl.Execute(cli.out, value); err != nil {
return err
}
cli.out.Write([]byte{'\n'})
}
indented.WriteString(",")
}
if indented.Len() > 1 {
// Remove trailing ','
indented.Truncate(indented.Len() - 1)
}
indented.WriteByte(']')
if tmpl == nil {
if _, err := io.Copy(cli.out, indented); err != nil {
return err
}
}
if status != 0 {
return &utils.StatusError{StatusCode: status}
}
return nil
}
func (cli *DockerCli) CmdTop(args ...string) error {
cmd := cli.Subcmd("top", "CONTAINER [ps OPTIONS]", "Lookup the running processes of a container")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() == 0 {
cmd.Usage()
return nil
}
val := url.Values{}
if cmd.NArg() > 1 {
val.Set("ps_args", strings.Join(cmd.Args()[1:], " "))
}
stream, _, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/top?"+val.Encode(), nil, false)
if err != nil {
return err
}
var procs engine.Env
if err := procs.Decode(stream); err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
fmt.Fprintln(w, strings.Join(procs.GetList("Titles"), "\t"))
processes := [][]string{}
if err := procs.GetJson("Processes", &processes); err != nil {
return err
}
for _, proc := range processes {
fmt.Fprintln(w, strings.Join(proc, "\t"))
}
w.Flush()
return nil
}
func (cli *DockerCli) CmdPort(args ...string) error {
cmd := cli.Subcmd("port", "CONTAINER PRIVATE_PORT", "Lookup the public-facing port which is NAT-ed to PRIVATE_PORT")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() != 2 {
cmd.Usage()
return nil
}
port := cmd.Arg(1)
proto := "tcp"
parts := strings.SplitN(port, "/", 2)
if len(parts) == 2 && len(parts[1]) != 0 {
port = parts[0]
proto = parts[1]
}
body, _, err := readBody(cli.call("GET", "/containers/"+cmd.Arg(0)+"/json", nil, false))
if err != nil {
return err
}
var out Container
err = json.Unmarshal(body, &out)
if err != nil {
return err
}
if frontends, exists := out.NetworkSettings.Ports[nat.Port(port+"/"+proto)]; exists && frontends != nil {
for _, frontend := range frontends {
fmt.Fprintf(cli.out, "%s:%s\n", frontend.HostIp, frontend.HostPort)
}
} else {
return fmt.Errorf("Error: No public port '%s' published for %s", cmd.Arg(1), cmd.Arg(0))
}
return nil
}
// 'docker rmi IMAGE' removes all images with the name IMAGE
func (cli *DockerCli) CmdRmi(args ...string) error {
var (
cmd = cli.Subcmd("rmi", "IMAGE [IMAGE...]", "Remove one or more images")
force = cmd.Bool([]string{"f", "-force"}, false, "Force")
noprune = cmd.Bool([]string{"-no-prune"}, false, "Do not delete untagged parents")
)
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
v := url.Values{}
if *force {
v.Set("force", "1")
}
if *noprune {
v.Set("noprune", "1")
}
var encounteredError error
for _, name := range cmd.Args() {
body, _, err := readBody(cli.call("DELETE", "/images/"+name+"?"+v.Encode(), nil, false))
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to remove one or more images")
} else {
outs := engine.NewTable("Created", 0)
if _, err := outs.ReadListFrom(body); err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to remove one or more images")
continue
}
for _, out := range outs.Data {
if out.Get("Deleted") != "" {
fmt.Fprintf(cli.out, "Deleted: %s\n", out.Get("Deleted"))
} else {
fmt.Fprintf(cli.out, "Untagged: %s\n", out.Get("Untagged"))
}
}
}
}
return encounteredError
}
func (cli *DockerCli) CmdHistory(args ...string) error {
cmd := cli.Subcmd("history", "[OPTIONS] IMAGE", "Show the history of an image")
quiet := cmd.Bool([]string{"q", "-quiet"}, false, "Only show numeric IDs")
noTrunc := cmd.Bool([]string{"#notrunc", "-no-trunc"}, false, "Don't truncate output")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() != 1 {
cmd.Usage()
return nil
}
body, _, err := readBody(cli.call("GET", "/images/"+cmd.Arg(0)+"/history", nil, false))
if err != nil {
return err
}
outs := engine.NewTable("Created", 0)
if _, err := outs.ReadListFrom(body); err != nil {
return err
}
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
if !*quiet {
fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE")
}
for _, out := range outs.Data {
outID := out.Get("Id")
if !*quiet {
if *noTrunc {
fmt.Fprintf(w, "%s\t", outID)
} else {
fmt.Fprintf(w, "%s\t", utils.TruncateID(outID))
}
fmt.Fprintf(w, "%s ago\t", utils.HumanDuration(time.Now().UTC().Sub(time.Unix(out.GetInt64("Created"), 0))))
if *noTrunc {
fmt.Fprintf(w, "%s\t", out.Get("CreatedBy"))
} else {
fmt.Fprintf(w, "%s\t", utils.Trunc(out.Get("CreatedBy"), 45))
}
fmt.Fprintf(w, "%s\n", utils.HumanSize(out.GetInt64("Size")))
} else {
if *noTrunc {
fmt.Fprintln(w, outID)
} else {
fmt.Fprintln(w, utils.TruncateID(outID))
}
}
}
w.Flush()
return nil
}
func (cli *DockerCli) CmdRm(args ...string) error {
cmd := cli.Subcmd("rm", "[OPTIONS] CONTAINER [CONTAINER...]", "Remove one or more containers")
v := cmd.Bool([]string{"v", "-volumes"}, false, "Remove the volumes associated to the container")
link := cmd.Bool([]string{"l", "#link", "-link"}, false, "Remove the specified link and not the underlying container")
force := cmd.Bool([]string{"f", "-force"}, false, "Force removal of running container")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
val := url.Values{}
if *v {
val.Set("v", "1")
}
if *link {
val.Set("link", "1")
}
if *force {
val.Set("force", "1")
}
var encounteredError error
for _, name := range cmd.Args() {
_, _, err := readBody(cli.call("DELETE", "/containers/"+name+"?"+val.Encode(), nil, false))
if err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to remove one or more containers")
} else {
fmt.Fprintf(cli.out, "%s\n", name)
}
}
return encounteredError
}
// 'docker kill NAME' kills a running container
func (cli *DockerCli) CmdKill(args ...string) error {
cmd := cli.Subcmd("kill", "[OPTIONS] CONTAINER [CONTAINER...]", "Kill a running container (send SIGKILL, or specified signal)")
signal := cmd.String([]string{"s", "-signal"}, "KILL", "Signal to send to the container")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
var encounteredError error
for _, name := range cmd.Args() {
if _, _, err := readBody(cli.call("POST", fmt.Sprintf("/containers/%s/kill?signal=%s", name, *signal), nil, false)); err != nil {
fmt.Fprintf(cli.err, "%s\n", err)
encounteredError = fmt.Errorf("Error: failed to kill one or more containers")
} else {
fmt.Fprintf(cli.out, "%s\n", name)
}
}
return encounteredError
}
func (cli *DockerCli) CmdImport(args ...string) error {
cmd := cli.Subcmd("import", "URL|- [REPOSITORY[:TAG]]", "Create an empty filesystem image and import the contents of the tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) into it, then optionally tag it.")
if err := cmd.Parse(args); err != nil {
return nil
}
if cmd.NArg() < 1 {
cmd.Usage()
return nil
}
var src, repository, tag string
if cmd.NArg() == 3 {
fmt.Fprintf(cli.err, "[DEPRECATED] The format 'URL|- [REPOSITORY [TAG]]' as been deprecated. Please use URL|- [REPOSITORY[:TAG]]\n")
src, repository, tag = cmd.Arg(0), cmd.Arg(1), cmd.Arg(2)