/usr/share/gocode/src/github.com/fsouza/go-dockerclient/testing/server.go is in golang-github-fsouza-go-dockerclient-dev 0.0+git20150905-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 | // Copyright 2015 go-dockerclient authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package testing provides a fake implementation of the Docker API, useful for
// testing purpose.
package testing
import (
"archive/tar"
"crypto/rand"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
mathrand "math/rand"
"net"
"net/http"
"regexp"
"strconv"
"strings"
"sync"
"time"
"github.com/fsouza/go-dockerclient"
"github.com/fsouza/go-dockerclient/external/github.com/docker/docker/pkg/stdcopy"
"github.com/gorilla/mux"
)
var nameRegexp = regexp.MustCompile(`^[a-zA-Z0-9][a-zA-Z0-9_.-]+$`)
// DockerServer represents a programmable, concurrent (not much), HTTP server
// implementing a fake version of the Docker remote API.
//
// It can used in standalone mode, listening for connections or as an arbitrary
// HTTP handler.
//
// For more details on the remote API, check http://goo.gl/G3plxW.
type DockerServer struct {
containers []*docker.Container
execs []*docker.ExecInspect
execMut sync.RWMutex
cMut sync.RWMutex
images []docker.Image
iMut sync.RWMutex
imgIDs map[string]string
networks []*docker.Network
netMut sync.RWMutex
listener net.Listener
mux *mux.Router
hook func(*http.Request)
failures map[string]string
multiFailures []map[string]string
execCallbacks map[string]func()
statsCallbacks map[string]func(string) docker.Stats
customHandlers map[string]http.Handler
handlerMutex sync.RWMutex
cChan chan<- *docker.Container
}
// NewServer returns a new instance of the fake server, in standalone mode. Use
// the method URL to get the URL of the server.
//
// It receives the bind address (use 127.0.0.1:0 for getting an available port
// on the host), a channel of containers and a hook function, that will be
// called on every request.
//
// The fake server will send containers in the channel whenever the container
// changes its state, via the HTTP API (i.e.: create, start and stop). This
// channel may be nil, which means that the server won't notify on state
// changes.
func NewServer(bind string, containerChan chan<- *docker.Container, hook func(*http.Request)) (*DockerServer, error) {
listener, err := net.Listen("tcp", bind)
if err != nil {
return nil, err
}
server := DockerServer{
listener: listener,
imgIDs: make(map[string]string),
hook: hook,
failures: make(map[string]string),
execCallbacks: make(map[string]func()),
statsCallbacks: make(map[string]func(string) docker.Stats),
customHandlers: make(map[string]http.Handler),
cChan: containerChan,
}
server.buildMuxer()
go http.Serve(listener, &server)
return &server, nil
}
func (s *DockerServer) notify(container *docker.Container) {
if s.cChan != nil {
s.cChan <- container
}
}
func (s *DockerServer) buildMuxer() {
s.mux = mux.NewRouter()
s.mux.Path("/commit").Methods("POST").HandlerFunc(s.handlerWrapper(s.commitContainer))
s.mux.Path("/containers/json").Methods("GET").HandlerFunc(s.handlerWrapper(s.listContainers))
s.mux.Path("/containers/create").Methods("POST").HandlerFunc(s.handlerWrapper(s.createContainer))
s.mux.Path("/containers/{id:.*}/json").Methods("GET").HandlerFunc(s.handlerWrapper(s.inspectContainer))
s.mux.Path("/containers/{id:.*}/rename").Methods("POST").HandlerFunc(s.handlerWrapper(s.renameContainer))
s.mux.Path("/containers/{id:.*}/top").Methods("GET").HandlerFunc(s.handlerWrapper(s.topContainer))
s.mux.Path("/containers/{id:.*}/start").Methods("POST").HandlerFunc(s.handlerWrapper(s.startContainer))
s.mux.Path("/containers/{id:.*}/kill").Methods("POST").HandlerFunc(s.handlerWrapper(s.stopContainer))
s.mux.Path("/containers/{id:.*}/stop").Methods("POST").HandlerFunc(s.handlerWrapper(s.stopContainer))
s.mux.Path("/containers/{id:.*}/pause").Methods("POST").HandlerFunc(s.handlerWrapper(s.pauseContainer))
s.mux.Path("/containers/{id:.*}/unpause").Methods("POST").HandlerFunc(s.handlerWrapper(s.unpauseContainer))
s.mux.Path("/containers/{id:.*}/wait").Methods("POST").HandlerFunc(s.handlerWrapper(s.waitContainer))
s.mux.Path("/containers/{id:.*}/attach").Methods("POST").HandlerFunc(s.handlerWrapper(s.attachContainer))
s.mux.Path("/containers/{id:.*}").Methods("DELETE").HandlerFunc(s.handlerWrapper(s.removeContainer))
s.mux.Path("/containers/{id:.*}/exec").Methods("POST").HandlerFunc(s.handlerWrapper(s.createExecContainer))
s.mux.Path("/containers/{id:.*}/stats").Methods("GET").HandlerFunc(s.handlerWrapper(s.statsContainer))
s.mux.Path("/exec/{id:.*}/resize").Methods("POST").HandlerFunc(s.handlerWrapper(s.resizeExecContainer))
s.mux.Path("/exec/{id:.*}/start").Methods("POST").HandlerFunc(s.handlerWrapper(s.startExecContainer))
s.mux.Path("/exec/{id:.*}/json").Methods("GET").HandlerFunc(s.handlerWrapper(s.inspectExecContainer))
s.mux.Path("/images/create").Methods("POST").HandlerFunc(s.handlerWrapper(s.pullImage))
s.mux.Path("/build").Methods("POST").HandlerFunc(s.handlerWrapper(s.buildImage))
s.mux.Path("/images/json").Methods("GET").HandlerFunc(s.handlerWrapper(s.listImages))
s.mux.Path("/images/{id:.*}").Methods("DELETE").HandlerFunc(s.handlerWrapper(s.removeImage))
s.mux.Path("/images/{name:.*}/json").Methods("GET").HandlerFunc(s.handlerWrapper(s.inspectImage))
s.mux.Path("/images/{name:.*}/push").Methods("POST").HandlerFunc(s.handlerWrapper(s.pushImage))
s.mux.Path("/images/{name:.*}/tag").Methods("POST").HandlerFunc(s.handlerWrapper(s.tagImage))
s.mux.Path("/events").Methods("GET").HandlerFunc(s.listEvents)
s.mux.Path("/_ping").Methods("GET").HandlerFunc(s.handlerWrapper(s.pingDocker))
s.mux.Path("/images/load").Methods("POST").HandlerFunc(s.handlerWrapper(s.loadImage))
s.mux.Path("/images/{id:.*}/get").Methods("GET").HandlerFunc(s.handlerWrapper(s.getImage))
s.mux.Path("/networks").Methods("GET").HandlerFunc(s.handlerWrapper(s.listNetworks))
s.mux.Path("/networks/{id:.*}").Methods("GET").HandlerFunc(s.handlerWrapper(s.networkInfo))
s.mux.Path("/networks").Methods("POST").HandlerFunc(s.handlerWrapper(s.createNetwork))
}
// SetHook changes the hook function used by the server.
//
// The hook function is a function called on every request.
func (s *DockerServer) SetHook(hook func(*http.Request)) {
s.hook = hook
}
// PrepareExec adds a callback to a container exec in the fake server.
//
// This function will be called whenever the given exec id is started, and the
// given exec id will remain in the "Running" start while the function is
// running, so it's useful for emulating an exec that runs for two seconds, for
// example:
//
// opts := docker.CreateExecOptions{
// AttachStdin: true,
// AttachStdout: true,
// AttachStderr: true,
// Tty: true,
// Cmd: []string{"/bin/bash", "-l"},
// }
// // Client points to a fake server.
// exec, err := client.CreateExec(opts)
// // handle error
// server.PrepareExec(exec.ID, func() {time.Sleep(2 * time.Second)})
// err = client.StartExec(exec.ID, docker.StartExecOptions{Tty: true}) // will block for 2 seconds
// // handle error
func (s *DockerServer) PrepareExec(id string, callback func()) {
s.execCallbacks[id] = callback
}
// PrepareStats adds a callback that will be called for each container stats
// call.
//
// This callback function will be called multiple times if stream is set to
// true when stats is called.
func (s *DockerServer) PrepareStats(id string, callback func(string) docker.Stats) {
s.statsCallbacks[id] = callback
}
// PrepareFailure adds a new expected failure based on a URL regexp it receives
// an id for the failure.
func (s *DockerServer) PrepareFailure(id string, urlRegexp string) {
s.failures[id] = urlRegexp
}
// PrepareMultiFailures enqueues a new expected failure based on a URL regexp
// it receives an id for the failure.
func (s *DockerServer) PrepareMultiFailures(id string, urlRegexp string) {
s.multiFailures = append(s.multiFailures, map[string]string{"error": id, "url": urlRegexp})
}
// ResetFailure removes an expected failure identified by the given id.
func (s *DockerServer) ResetFailure(id string) {
delete(s.failures, id)
}
// ResetMultiFailures removes all enqueued failures.
func (s *DockerServer) ResetMultiFailures() {
s.multiFailures = []map[string]string{}
}
// CustomHandler registers a custom handler for a specific path.
//
// For example:
//
// server.CustomHandler("/containers/json", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// http.Error(w, "Something wrong is not right", http.StatusInternalServerError)
// }))
func (s *DockerServer) CustomHandler(path string, handler http.Handler) {
s.handlerMutex.Lock()
s.customHandlers[path] = handler
s.handlerMutex.Unlock()
}
// MutateContainer changes the state of a container, returning an error if the
// given id does not match to any container "running" in the server.
func (s *DockerServer) MutateContainer(id string, state docker.State) error {
for _, container := range s.containers {
if container.ID == id {
container.State = state
return nil
}
}
return errors.New("container not found")
}
// Stop stops the server.
func (s *DockerServer) Stop() {
if s.listener != nil {
s.listener.Close()
}
}
// URL returns the HTTP URL of the server.
func (s *DockerServer) URL() string {
if s.listener == nil {
return ""
}
return "http://" + s.listener.Addr().String() + "/"
}
// ServeHTTP handles HTTP requests sent to the server.
func (s *DockerServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
s.handlerMutex.RLock()
defer s.handlerMutex.RUnlock()
for re, handler := range s.customHandlers {
if m, _ := regexp.MatchString(re, r.URL.Path); m {
handler.ServeHTTP(w, r)
return
}
}
s.mux.ServeHTTP(w, r)
if s.hook != nil {
s.hook(r)
}
}
// DefaultHandler returns default http.Handler mux, it allows customHandlers to
// call the default behavior if wanted.
func (s *DockerServer) DefaultHandler() http.Handler {
return s.mux
}
func (s *DockerServer) handlerWrapper(f func(http.ResponseWriter, *http.Request)) func(http.ResponseWriter, *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
for errorID, urlRegexp := range s.failures {
matched, err := regexp.MatchString(urlRegexp, r.URL.Path)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if !matched {
continue
}
http.Error(w, errorID, http.StatusBadRequest)
return
}
for i, failure := range s.multiFailures {
matched, err := regexp.MatchString(failure["url"], r.URL.Path)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if !matched {
continue
}
http.Error(w, failure["error"], http.StatusBadRequest)
s.multiFailures = append(s.multiFailures[:i], s.multiFailures[i+1:]...)
return
}
f(w, r)
}
}
func (s *DockerServer) listContainers(w http.ResponseWriter, r *http.Request) {
all := r.URL.Query().Get("all")
s.cMut.RLock()
result := make([]docker.APIContainers, 0, len(s.containers))
for _, container := range s.containers {
if all == "1" || container.State.Running {
result = append(result, docker.APIContainers{
ID: container.ID,
Image: container.Image,
Command: fmt.Sprintf("%s %s", container.Path, strings.Join(container.Args, " ")),
Created: container.Created.Unix(),
Status: container.State.String(),
Ports: container.NetworkSettings.PortMappingAPI(),
Names: []string{fmt.Sprintf("/%s", container.Name)},
})
}
}
s.cMut.RUnlock()
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) listImages(w http.ResponseWriter, r *http.Request) {
s.cMut.RLock()
result := make([]docker.APIImages, len(s.images))
for i, image := range s.images {
result[i] = docker.APIImages{
ID: image.ID,
Created: image.Created.Unix(),
}
for tag, id := range s.imgIDs {
if id == image.ID {
result[i].RepoTags = append(result[i].RepoTags, tag)
}
}
}
s.cMut.RUnlock()
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) findImage(id string) (string, error) {
s.iMut.RLock()
defer s.iMut.RUnlock()
image, ok := s.imgIDs[id]
if ok {
return image, nil
}
image, _, err := s.findImageByID(id)
return image, err
}
func (s *DockerServer) findImageByID(id string) (string, int, error) {
s.iMut.RLock()
defer s.iMut.RUnlock()
for i, image := range s.images {
if image.ID == id {
return image.ID, i, nil
}
}
return "", -1, errors.New("No such image")
}
func (s *DockerServer) createContainer(w http.ResponseWriter, r *http.Request) {
var config struct {
*docker.Config
HostConfig *docker.HostConfig
}
defer r.Body.Close()
err := json.NewDecoder(r.Body).Decode(&config)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
name := r.URL.Query().Get("name")
if name != "" && !nameRegexp.MatchString(name) {
http.Error(w, "Invalid container name", http.StatusInternalServerError)
return
}
if _, err := s.findImage(config.Image); err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
ports := map[docker.Port][]docker.PortBinding{}
for port := range config.ExposedPorts {
ports[port] = []docker.PortBinding{{
HostIP: "0.0.0.0",
HostPort: strconv.Itoa(mathrand.Int() % 65536),
}}
}
//the container may not have cmd when using a Dockerfile
var path string
var args []string
if len(config.Cmd) == 1 {
path = config.Cmd[0]
} else if len(config.Cmd) > 1 {
path = config.Cmd[0]
args = config.Cmd[1:]
}
generatedID := s.generateID()
config.Config.Hostname = generatedID[:12]
container := docker.Container{
Name: name,
ID: generatedID,
Created: time.Now(),
Path: path,
Args: args,
Config: config.Config,
HostConfig: config.HostConfig,
State: docker.State{
Running: false,
Pid: mathrand.Int() % 50000,
ExitCode: 0,
StartedAt: time.Now(),
},
Image: config.Image,
NetworkSettings: &docker.NetworkSettings{
IPAddress: fmt.Sprintf("172.16.42.%d", mathrand.Int()%250+2),
IPPrefixLen: 24,
Gateway: "172.16.42.1",
Bridge: "docker0",
Ports: ports,
},
}
s.cMut.Lock()
if container.Name != "" {
for _, c := range s.containers {
if c.Name == container.Name {
defer s.cMut.Unlock()
http.Error(w, "there's already a container with this name", http.StatusConflict)
return
}
}
}
s.containers = append(s.containers, &container)
s.cMut.Unlock()
w.WriteHeader(http.StatusCreated)
s.notify(&container)
var c = struct{ ID string }{ID: container.ID}
json.NewEncoder(w).Encode(c)
}
func (s *DockerServer) generateID() string {
var buf [16]byte
rand.Read(buf[:])
return fmt.Sprintf("%x", buf)
}
func (s *DockerServer) renameContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, index, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
copy := *container
copy.Name = r.URL.Query().Get("name")
s.cMut.Lock()
defer s.cMut.Unlock()
if s.containers[index].ID == copy.ID {
s.containers[index] = ©
}
w.WriteHeader(http.StatusNoContent)
}
func (s *DockerServer) inspectContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(container)
}
func (s *DockerServer) statsContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
_, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
stream, _ := strconv.ParseBool(r.URL.Query().Get("stream"))
callback := s.statsCallbacks[id]
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
encoder := json.NewEncoder(w)
for {
var stats docker.Stats
if callback != nil {
stats = callback(id)
}
encoder.Encode(stats)
if !stream {
break
}
}
}
func (s *DockerServer) topContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if !container.State.Running {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Container %s is not running", id)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
result := docker.TopResult{
Titles: []string{"UID", "PID", "PPID", "C", "STIME", "TTY", "TIME", "CMD"},
Processes: [][]string{
{"root", "7535", "7516", "0", "03:20", "?", "00:00:00", container.Path + " " + strings.Join(container.Args, " ")},
},
}
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) startContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
defer r.Body.Close()
var hostConfig docker.HostConfig
err = json.NewDecoder(r.Body).Decode(&hostConfig)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
container.HostConfig = &hostConfig
if container.State.Running {
http.Error(w, "", http.StatusNotModified)
return
}
container.State.Running = true
s.notify(container)
}
func (s *DockerServer) stopContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
if !container.State.Running {
http.Error(w, "Container not running", http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusNoContent)
container.State.Running = false
s.notify(container)
}
func (s *DockerServer) pauseContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
if container.State.Paused {
http.Error(w, "Container already paused", http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusNoContent)
container.State.Paused = true
}
func (s *DockerServer) unpauseContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
s.cMut.Lock()
defer s.cMut.Unlock()
if !container.State.Paused {
http.Error(w, "Container not paused", http.StatusBadRequest)
return
}
w.WriteHeader(http.StatusNoContent)
container.State.Paused = false
}
func (s *DockerServer) attachContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
hijacker, ok := w.(http.Hijacker)
if !ok {
http.Error(w, "cannot hijack connection", http.StatusInternalServerError)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.raw-stream")
w.WriteHeader(http.StatusOK)
conn, _, err := hijacker.Hijack()
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
wg := sync.WaitGroup{}
if r.URL.Query().Get("stdin") == "1" {
wg.Add(1)
go func() {
ioutil.ReadAll(conn)
wg.Done()
}()
}
outStream := stdcopy.NewStdWriter(conn, stdcopy.Stdout)
if container.State.Running {
fmt.Fprintf(outStream, "Container is running\n")
} else {
fmt.Fprintf(outStream, "Container is not running\n")
}
fmt.Fprintln(outStream, "What happened?")
fmt.Fprintln(outStream, "Something happened")
wg.Wait()
if r.URL.Query().Get("stream") == "1" {
for {
time.Sleep(1e6)
s.cMut.RLock()
if !container.State.Running {
s.cMut.RUnlock()
break
}
s.cMut.RUnlock()
}
}
conn.Close()
}
func (s *DockerServer) waitContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
for {
time.Sleep(1e6)
s.cMut.RLock()
if !container.State.Running {
s.cMut.RUnlock()
break
}
s.cMut.RUnlock()
}
result := map[string]int{"StatusCode": container.State.ExitCode}
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) removeContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
force := r.URL.Query().Get("force")
_, index, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
if s.containers[index].State.Running && force != "1" {
msg := "Error: API error (406): Impossible to remove a running container, please stop it first"
http.Error(w, msg, http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusNoContent)
s.cMut.Lock()
defer s.cMut.Unlock()
s.containers[index] = s.containers[len(s.containers)-1]
s.containers = s.containers[:len(s.containers)-1]
}
func (s *DockerServer) commitContainer(w http.ResponseWriter, r *http.Request) {
id := r.URL.Query().Get("container")
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
var config *docker.Config
runConfig := r.URL.Query().Get("run")
if runConfig != "" {
config = new(docker.Config)
err = json.Unmarshal([]byte(runConfig), config)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
w.WriteHeader(http.StatusOK)
image := docker.Image{
ID: "img-" + container.ID,
Parent: container.Image,
Container: container.ID,
Comment: r.URL.Query().Get("m"),
Author: r.URL.Query().Get("author"),
Config: config,
}
repository := r.URL.Query().Get("repo")
tag := r.URL.Query().Get("tag")
s.iMut.Lock()
s.images = append(s.images, image)
if repository != "" {
if tag != "" {
repository += ":" + tag
}
s.imgIDs[repository] = image.ID
}
s.iMut.Unlock()
fmt.Fprintf(w, `{"ID":%q}`, image.ID)
}
func (s *DockerServer) findContainer(idOrName string) (*docker.Container, int, error) {
s.cMut.RLock()
defer s.cMut.RUnlock()
for i, container := range s.containers {
if container.ID == idOrName || container.Name == idOrName {
return container, i, nil
}
}
return nil, -1, errors.New("No such container")
}
func (s *DockerServer) buildImage(w http.ResponseWriter, r *http.Request) {
if ct := r.Header.Get("Content-Type"); ct == "application/tar" {
gotDockerFile := false
tr := tar.NewReader(r.Body)
for {
header, err := tr.Next()
if err != nil {
break
}
if header.Name == "Dockerfile" {
gotDockerFile = true
}
}
if !gotDockerFile {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte("miss Dockerfile"))
return
}
}
//we did not use that Dockerfile to build image cause we are a fake Docker daemon
image := docker.Image{
ID: s.generateID(),
Created: time.Now(),
}
query := r.URL.Query()
repository := image.ID
if t := query.Get("t"); t != "" {
repository = t
}
s.iMut.Lock()
s.images = append(s.images, image)
s.imgIDs[repository] = image.ID
s.iMut.Unlock()
w.Write([]byte(fmt.Sprintf("Successfully built %s", image.ID)))
}
func (s *DockerServer) pullImage(w http.ResponseWriter, r *http.Request) {
fromImageName := r.URL.Query().Get("fromImage")
tag := r.URL.Query().Get("tag")
image := docker.Image{
ID: s.generateID(),
}
s.iMut.Lock()
s.images = append(s.images, image)
if fromImageName != "" {
if tag != "" {
fromImageName = fmt.Sprintf("%s:%s", fromImageName, tag)
}
s.imgIDs[fromImageName] = image.ID
}
s.iMut.Unlock()
}
func (s *DockerServer) pushImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
tag := r.URL.Query().Get("tag")
if tag != "" {
name += ":" + tag
}
s.iMut.RLock()
if _, ok := s.imgIDs[name]; !ok {
s.iMut.RUnlock()
http.Error(w, "No such image", http.StatusNotFound)
return
}
s.iMut.RUnlock()
fmt.Fprintln(w, "Pushing...")
fmt.Fprintln(w, "Pushed")
}
func (s *DockerServer) tagImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
s.iMut.RLock()
if _, ok := s.imgIDs[name]; !ok {
s.iMut.RUnlock()
http.Error(w, "No such image", http.StatusNotFound)
return
}
s.iMut.RUnlock()
s.iMut.Lock()
defer s.iMut.Unlock()
newRepo := r.URL.Query().Get("repo")
newTag := r.URL.Query().Get("tag")
if newTag != "" {
newRepo += ":" + newTag
}
s.imgIDs[newRepo] = s.imgIDs[name]
w.WriteHeader(http.StatusCreated)
}
func (s *DockerServer) removeImage(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
s.iMut.RLock()
var tag string
if img, ok := s.imgIDs[id]; ok {
id, tag = img, id
}
var tags []string
for tag, taggedID := range s.imgIDs {
if taggedID == id {
tags = append(tags, tag)
}
}
s.iMut.RUnlock()
_, index, err := s.findImageByID(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.WriteHeader(http.StatusNoContent)
s.iMut.Lock()
defer s.iMut.Unlock()
if len(tags) < 2 {
s.images[index] = s.images[len(s.images)-1]
s.images = s.images[:len(s.images)-1]
}
if tag != "" {
delete(s.imgIDs, tag)
}
}
func (s *DockerServer) inspectImage(w http.ResponseWriter, r *http.Request) {
name := mux.Vars(r)["name"]
s.iMut.RLock()
defer s.iMut.RUnlock()
if id, ok := s.imgIDs[name]; ok {
for _, img := range s.images {
if img.ID == id {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(img)
return
}
}
}
http.Error(w, "not found", http.StatusNotFound)
}
func (s *DockerServer) listEvents(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
var events [][]byte
count := mathrand.Intn(20)
for i := 0; i < count; i++ {
data, err := json.Marshal(s.generateEvent())
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
events = append(events, data)
}
w.WriteHeader(http.StatusOK)
for _, d := range events {
fmt.Fprintln(w, d)
time.Sleep(time.Duration(mathrand.Intn(200)) * time.Millisecond)
}
}
func (s *DockerServer) pingDocker(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
}
func (s *DockerServer) generateEvent() *docker.APIEvents {
var eventType string
switch mathrand.Intn(4) {
case 0:
eventType = "create"
case 1:
eventType = "start"
case 2:
eventType = "stop"
case 3:
eventType = "destroy"
}
return &docker.APIEvents{
ID: s.generateID(),
Status: eventType,
From: "mybase:latest",
Time: time.Now().Unix(),
}
}
func (s *DockerServer) loadImage(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
}
func (s *DockerServer) getImage(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/tar")
}
func (s *DockerServer) createExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
container, _, err := s.findContainer(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
exec := docker.ExecInspect{
ID: s.generateID(),
Container: *container,
}
var params docker.CreateExecOptions
err = json.NewDecoder(r.Body).Decode(¶ms)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
if len(params.Cmd) > 0 {
exec.ProcessConfig.EntryPoint = params.Cmd[0]
if len(params.Cmd) > 1 {
exec.ProcessConfig.Arguments = params.Cmd[1:]
}
}
s.execMut.Lock()
s.execs = append(s.execs, &exec)
s.execMut.Unlock()
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(map[string]string{"Id": exec.ID})
}
func (s *DockerServer) startExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if exec, err := s.getExec(id); err == nil {
s.execMut.Lock()
exec.Running = true
s.execMut.Unlock()
if callback, ok := s.execCallbacks[id]; ok {
callback()
delete(s.execCallbacks, id)
} else if callback, ok := s.execCallbacks["*"]; ok {
callback()
delete(s.execCallbacks, "*")
}
s.execMut.Lock()
exec.Running = false
s.execMut.Unlock()
w.WriteHeader(http.StatusOK)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) resizeExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if _, err := s.getExec(id); err == nil {
w.WriteHeader(http.StatusOK)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) inspectExecContainer(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
if exec, err := s.getExec(id); err == nil {
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(exec)
return
}
w.WriteHeader(http.StatusNotFound)
}
func (s *DockerServer) getExec(id string) (*docker.ExecInspect, error) {
s.execMut.RLock()
defer s.execMut.RUnlock()
for _, exec := range s.execs {
if exec.ID == id {
return exec, nil
}
}
return nil, errors.New("exec not found")
}
func (s *DockerServer) findNetwork(idOrName string) (*docker.Network, int, error) {
s.netMut.RLock()
defer s.netMut.RUnlock()
for i, network := range s.networks {
if network.ID == idOrName || network.Name == idOrName {
return network, i, nil
}
}
return nil, -1, errors.New("No such network")
}
func (s *DockerServer) listNetworks(w http.ResponseWriter, r *http.Request) {
s.netMut.RLock()
result := make([]docker.Network, 0, len(s.networks))
for _, network := range s.networks {
result = append(result, *network)
}
s.netMut.RUnlock()
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(result)
}
func (s *DockerServer) networkInfo(w http.ResponseWriter, r *http.Request) {
id := mux.Vars(r)["id"]
network, _, err := s.findNetwork(id)
if err != nil {
http.Error(w, err.Error(), http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(network)
}
// isValidName validates configuration objects supported by libnetwork
func isValidName(name string) bool {
if name == "" || strings.Contains(name, ".") {
return false
}
return true
}
func (s *DockerServer) createNetwork(w http.ResponseWriter, r *http.Request) {
var config *docker.CreateNetworkOptions
defer r.Body.Close()
err := json.NewDecoder(r.Body).Decode(&config)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if !isValidName(config.Name) {
http.Error(w, "Invalid network name", http.StatusBadRequest)
return
}
if n, _, _ := s.findNetwork(config.Name); n != nil {
http.Error(w, "network already exists", http.StatusForbidden)
return
}
generatedID := s.generateID()
network := docker.Network{
Name: config.Name,
ID: generatedID,
Type: config.NetworkType,
}
s.netMut.Lock()
s.networks = append(s.networks, &network)
s.netMut.Unlock()
w.WriteHeader(http.StatusCreated)
var c = struct{ ID string }{ID: network.ID}
json.NewEncoder(w).Encode(c)
}
|