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package docker
import (
"archive/tar"
"bufio"
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"github.com/dotcloud/docker/api"
"github.com/dotcloud/docker/archive"
"github.com/dotcloud/docker/auth"
"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/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/signal"
"path"
"reflect"
"regexp"
"runtime"
"sort"
"strconv"
"strings"
"syscall"
"text/tabwriter"
"text/template"
"time"
)
var (
ErrConnectionRefused = errors.New("Can't connect to 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 ParseCommands(proto, addr string, args ...string) error {
cli := NewDockerCli(os.Stdin, os.Stdout, os.Stderr, proto, addr)
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", api.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)
}
// mkBuildContext returns an archive of an empty context with the contents
// of `dockerfile` at the path ./Dockerfile
func MkBuildContext(dockerfile string, files [][2]string) (archive.Archive, error) {
buf := new(bytes.Buffer)
tw := tar.NewWriter(buf)
files = append(files, [2]string{"Dockerfile", dockerfile})
for _, file := range files {
name, content := file[0], file[1]
hdr := &tar.Header{
Name: name,
Size: int64(len(content)),
}
if err := tw.WriteHeader(hdr); err != nil {
return nil, err
}
if _, err := tw.Write([]byte(content)); err != nil {
return nil, err
}
}
if err := tw.Close(); err != nil {
return nil, err
}
return ioutil.NopCloser(buf), 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 verbose build output")
noCache := cmd.Bool([]string{"#no-cache", "-no-cache"}, false, "Do not use cache when building the image")
rm := cmd.Bool([]string{"#rm", "-rm"}, false, "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
)
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 = MkBuildContext(string(dockerfile), nil)
} else if utils.IsURL(cmd.Arg(0)) || utils.IsGIT(cmd.Arg(0)) {
isRemote = true
} else {
if _, err := os.Stat(cmd.Arg(0)); err != nil {
return err
}
filename := path.Join(cmd.Arg(0), "Dockerfile")
if _, err = os.Stat(filename); os.IsNotExist(err) {
return fmt.Errorf("no Dockerfile found in %s", cmd.Arg(0))
}
context, err = archive.Tar(cmd.Arg(0), 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 \""+auth.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 := auth.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 = auth.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)
auth.SaveConfig(cli.configFile)
return err
}
if err != nil {
return err
}
var out2 engine.Env
err = out2.Decode(stream)
if err != nil {
cli.configFile, _ = auth.LoadConfig(os.Getenv("HOME"))
return err
}
auth.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", runtime.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, "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])
}
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, "Execution Driver: %s\n", remoteInfo.Get("ExecutionDriver"))
fmt.Fprintf(cli.out, "EventsListeners: %d\n", remoteInfo.GetInt("NEventsListener"))
fmt.Fprintf(cli.out, "Kernel Version: %s\n", remoteInfo.Get("KernelVersion"))
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, and then SIGKILL after grace period)")
nSeconds := cmd.Int([]string{"t", "-time"}, 10, "Number of seconds to wait for the container to stop before killing it.")
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 try to stop for before killing the container. Once killed it will then be restarted. 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)
utils.CatchAll(sigc)
go func() {
for s := range sigc {
if s == syscall.SIGCHLD {
continue
}
if _, _, err := readBody(cli.call("POST", fmt.Sprintf("/containers/%s/kill?signal=%d", cid, s), 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("Impossible to 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 utils.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("").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 {
cmd := cli.Subcmd("rmi", "IMAGE [IMAGE...]", "Remove one or more images")
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() {
body, _, err := readBody(cli.call("DELETE", "/images/"+name, 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")
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")
}
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)
} else {
src = cmd.Arg(0)
repository, tag = utils.ParseRepositoryTag(cmd.Arg(1))
}
v := url.Values{}
v.Set("repo", repository)
v.Set("tag", tag)
v.Set("fromSrc", src)
var in io.Reader
if src == "-" {
in = cli.in
}
return cli.stream("POST", "/images/create?"+v.Encode(), in, cli.out, nil)
}
func (cli *DockerCli) CmdPush(args ...string) error {
cmd := cli.Subcmd("push", "NAME", "Push an image or a repository to the registry")
if err := cmd.Parse(args); err != nil {
return nil
}
name := cmd.Arg(0)