| package docker |
| |
| import ( |
| "bytes" |
| "encoding/json" |
| "errors" |
| "fmt" |
| "github.com/dotcloud/docker/auth" |
| "github.com/dotcloud/docker/rcli" |
| "io" |
| "log" |
| "math/rand" |
| "net/http" |
| "net/url" |
| "runtime" |
| "strconv" |
| "strings" |
| "sync" |
| "text/tabwriter" |
| "time" |
| ) |
| |
| const VERSION = "0.1.0" |
| |
| func (srv *Server) Name() string { |
| return "docker" |
| } |
| |
| // FIXME: Stop violating DRY by repeating usage here and in Subcmd declarations |
| func (srv *Server) Help() string { |
| help := "Usage: docker COMMAND [arg...]\n\nA self-sufficient runtime for linux containers.\n\nCommands:\n" |
| for _, cmd := range [][]interface{}{ |
| {"attach", "Attach to a running container"}, |
| {"commit", "Create a new image from a container's changes"}, |
| {"diff", "Inspect changes on a container's filesystem"}, |
| {"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"}, |
| {"inspect", "Return low-level information on a container"}, |
| {"kill", "Kill a running container"}, |
| {"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 to the docker registry server"}, |
| {"push", "Push an image or a repository to the docker registry server"}, |
| {"restart", "Restart a running container"}, |
| {"rm", "Remove a container"}, |
| {"rmi", "Remove an image"}, |
| {"run", "Run a command in a new container"}, |
| {"start", "Start a stopped container"}, |
| {"stop", "Stop a running container"}, |
| {"tag", "Tag an image into a repository"}, |
| {"version", "Show the docker version information"}, |
| {"wait", "Block until a container stops, then print its exit code"}, |
| } { |
| help += fmt.Sprintf(" %-10.10s%s\n", cmd[0], cmd[1]) |
| } |
| return help |
| } |
| |
| // 'docker login': login / register a user to registry service. |
| func (srv *Server) CmdLogin(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "login", "", "Register or Login to the docker registry server") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| var username string |
| var password string |
| var email string |
| |
| fmt.Fprint(stdout, "Username (", srv.runtime.authConfig.Username, "): ") |
| fmt.Fscanf(stdin, "%s", &username) |
| if username == "" { |
| username = srv.runtime.authConfig.Username |
| } |
| if username != srv.runtime.authConfig.Username { |
| fmt.Fprint(stdout, "Password: ") |
| fmt.Fscanf(stdin, "%s", &password) |
| |
| if password == "" { |
| return errors.New("Error : Password Required\n") |
| } |
| |
| fmt.Fprint(stdout, "Email (", srv.runtime.authConfig.Email, "): ") |
| fmt.Fscanf(stdin, "%s", &email) |
| if email == "" { |
| email = srv.runtime.authConfig.Email |
| } |
| } else { |
| password = srv.runtime.authConfig.Password |
| email = srv.runtime.authConfig.Email |
| } |
| newAuthConfig := auth.NewAuthConfig(username, password, email, srv.runtime.root) |
| status, err := auth.Login(newAuthConfig) |
| if err != nil { |
| fmt.Fprintf(stdout, "Error : %s\n", err) |
| } else { |
| srv.runtime.authConfig = newAuthConfig |
| } |
| if status != "" { |
| fmt.Fprintf(stdout, status) |
| } |
| return nil |
| } |
| |
| // 'docker wait': block until a container stops |
| func (srv *Server) CmdWait(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "wait", "[OPTIONS] NAME", "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 |
| } |
| for _, name := range cmd.Args() { |
| if container := srv.runtime.Get(name); container != nil { |
| fmt.Fprintln(stdout, container.Wait()) |
| } else { |
| return errors.New("No such container: " + name) |
| } |
| } |
| return nil |
| } |
| |
| // 'docker version': show version information |
| func (srv *Server) CmdVersion(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| fmt.Fprintf(stdout, "Version:%s\n", VERSION) |
| return nil |
| } |
| |
| // 'docker info': display system-wide information. |
| func (srv *Server) CmdInfo(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| images, _ := srv.runtime.graph.All() |
| var imgcount int |
| if images == nil { |
| imgcount = 0 |
| } else { |
| imgcount = len(images) |
| } |
| cmd := rcli.Subcmd(stdout, "info", "", "Display system-wide information.") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() > 0 { |
| cmd.Usage() |
| return nil |
| } |
| fmt.Fprintf(stdout, "containers: %d\nversion: %s\nimages: %d\n", |
| len(srv.runtime.List()), |
| VERSION, |
| imgcount) |
| return nil |
| } |
| |
| func (srv *Server) CmdStop(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "stop", "[OPTIONS] NAME", "Stop a running container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 1 { |
| cmd.Usage() |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| if container := srv.runtime.Get(name); container != nil { |
| if err := container.Stop(); err != nil { |
| return err |
| } |
| fmt.Fprintln(stdout, container.Id) |
| } else { |
| return errors.New("No such container: " + name) |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdRestart(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "restart", "[OPTIONS] NAME", "Restart a running container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 1 { |
| cmd.Usage() |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| if container := srv.runtime.Get(name); container != nil { |
| if err := container.Restart(); err != nil { |
| return err |
| } |
| fmt.Fprintln(stdout, container.Id) |
| } else { |
| return errors.New("No such container: " + name) |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdStart(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "start", "[OPTIONS] NAME", "Start a stopped container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 1 { |
| cmd.Usage() |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| if container := srv.runtime.Get(name); container != nil { |
| if err := container.Start(); err != nil { |
| return err |
| } |
| fmt.Fprintln(stdout, container.Id) |
| } else { |
| return errors.New("No such container: " + name) |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdInspect(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "inspect", "[OPTIONS] CONTAINER", "Return low-level information on a container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 1 { |
| cmd.Usage() |
| return nil |
| } |
| name := cmd.Arg(0) |
| var obj interface{} |
| if container := srv.runtime.Get(name); container != nil { |
| obj = container |
| } else if image, err := srv.runtime.repositories.LookupImage(name); err == nil && image != nil { |
| obj = image |
| } else { |
| // No output means the object does not exist |
| // (easier to script since stdout and stderr are not differentiated atm) |
| return nil |
| } |
| data, err := json.Marshal(obj) |
| if err != nil { |
| return err |
| } |
| indented := new(bytes.Buffer) |
| if err = json.Indent(indented, data, "", " "); err != nil { |
| return err |
| } |
| if _, err := io.Copy(stdout, indented); err != nil { |
| return err |
| } |
| stdout.Write([]byte{'\n'}) |
| return nil |
| } |
| |
| func (srv *Server) CmdPort(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "port", "[OPTIONS] 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 |
| } |
| name := cmd.Arg(0) |
| privatePort := cmd.Arg(1) |
| if container := srv.runtime.Get(name); container == nil { |
| return errors.New("No such container: " + name) |
| } else { |
| if frontend, exists := container.NetworkSettings.PortMapping[privatePort]; !exists { |
| return fmt.Errorf("No private port '%s' allocated on %s", privatePort, name) |
| } else { |
| fmt.Fprintln(stdout, frontend) |
| } |
| } |
| return nil |
| } |
| |
| // 'docker rmi NAME' removes all images with the name NAME |
| func (srv *Server) CmdRmi(stdin io.ReadCloser, stdout io.Writer, args ...string) (err error) { |
| cmd := rcli.Subcmd(stdout, "rmimage", "[OPTIONS] IMAGE", "Remove an image") |
| if cmd.Parse(args) != nil || cmd.NArg() < 1 { |
| cmd.Usage() |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| if err := srv.runtime.graph.Delete(name); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdHistory(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "history", "[OPTIONS] IMAGE", "Show the history of an image") |
| if cmd.Parse(args) != nil || cmd.NArg() != 1 { |
| cmd.Usage() |
| return nil |
| } |
| image, err := srv.runtime.repositories.LookupImage(cmd.Arg(0)) |
| if err != nil { |
| return err |
| } |
| w := tabwriter.NewWriter(stdout, 20, 1, 3, ' ', 0) |
| defer w.Flush() |
| fmt.Fprintf(w, "ID\tCREATED\tCREATED BY\n") |
| return image.WalkHistory(func(img *Image) error { |
| fmt.Fprintf(w, "%s\t%s\t%s\n", |
| srv.runtime.repositories.ImageName(img.Id), |
| HumanDuration(time.Now().Sub(img.Created))+" ago", |
| strings.Join(img.ContainerConfig.Cmd, " "), |
| ) |
| return nil |
| }) |
| } |
| |
| func (srv *Server) CmdRm(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "rm", "[OPTIONS] CONTAINER", "Remove a container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| container := srv.runtime.Get(name) |
| if container == nil { |
| return errors.New("No such container: " + name) |
| } |
| if err := srv.runtime.Destroy(container); err != nil { |
| fmt.Fprintln(stdout, "Error destroying container "+name+": "+err.Error()) |
| } |
| } |
| return nil |
| } |
| |
| // 'docker kill NAME' kills a running container |
| func (srv *Server) CmdKill(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "kill", "[OPTIONS] CONTAINER [CONTAINER...]", "Kill a running container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| for _, name := range cmd.Args() { |
| container := srv.runtime.Get(name) |
| if container == nil { |
| return errors.New("No such container: " + name) |
| } |
| if err := container.Kill(); err != nil { |
| fmt.Fprintln(stdout, "Error killing container "+name+": "+err.Error()) |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdImport(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "import", "[OPTIONS] URL|- [REPOSITORY [TAG]]", "Create a new filesystem image from the contents of a tarball") |
| var archive io.Reader |
| var resp *http.Response |
| |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| src := cmd.Arg(0) |
| if src == "" { |
| return errors.New("Not enough arguments") |
| } else if src == "-" { |
| archive = stdin |
| } else { |
| u, err := url.Parse(src) |
| if err != nil { |
| return err |
| } |
| if u.Scheme == "" { |
| u.Scheme = "http" |
| u.Host = src |
| u.Path = "" |
| } |
| fmt.Fprintf(stdout, "Downloading from %s\n", u.String()) |
| // Download with curl (pretty progress bar) |
| // If curl is not available, fallback to http.Get() |
| resp, err = Download(u.String(), stdout) |
| if err != nil { |
| return err |
| } |
| archive = ProgressReader(resp.Body, int(resp.ContentLength), stdout) |
| } |
| img, err := srv.runtime.graph.Create(archive, nil, "Imported from "+src) |
| if err != nil { |
| return err |
| } |
| // Optionally register the image at REPO/TAG |
| if repository := cmd.Arg(1); repository != "" { |
| tag := cmd.Arg(2) // Repository will handle an empty tag properly |
| if err := srv.runtime.repositories.Set(repository, tag, img.Id, true); err != nil { |
| return err |
| } |
| } |
| fmt.Fprintln(stdout, img.Id) |
| return nil |
| } |
| |
| func (srv *Server) CmdPush(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "push", "NAME", "Push an image or a repository to the registry") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| local := cmd.Arg(0) |
| |
| if local == "" { |
| cmd.Usage() |
| return nil |
| } |
| |
| // If the login failed, abort |
| if srv.runtime.authConfig == nil || srv.runtime.authConfig.Username == "" { |
| if err := srv.CmdLogin(stdin, stdout, args...); err != nil { |
| return err |
| } |
| if srv.runtime.authConfig == nil || srv.runtime.authConfig.Username == "" { |
| return fmt.Errorf("Please login prior to push. ('docker login')") |
| } |
| } |
| |
| var remote string |
| |
| tmp := strings.SplitN(local, "/", 2) |
| if len(tmp) == 1 { |
| return fmt.Errorf( |
| "Impossible to push a \"root\" repository. Please rename your repository in <user>/<repo> (ex: %s/%s)", |
| srv.runtime.authConfig.Username, local) |
| } else { |
| remote = local |
| } |
| |
| Debugf("Pushing [%s] to [%s]\n", local, remote) |
| |
| // Try to get the image |
| // FIXME: Handle lookup |
| // FIXME: Also push the tags in case of ./docker push myrepo:mytag |
| // img, err := srv.runtime.LookupImage(cmd.Arg(0)) |
| img, err := srv.runtime.graph.Get(local) |
| if err != nil { |
| Debugf("The push refers to a repository [%s] (len: %d)\n", local, len(srv.runtime.repositories.Repositories[local])) |
| |
| // If it fails, try to get the repository |
| if localRepo, exists := srv.runtime.repositories.Repositories[local]; exists { |
| fmt.Fprintf(stdout, "Pushing %s (%d tags) on %s...\n", local, len(localRepo), remote) |
| if err := srv.runtime.graph.PushRepository(stdout, remote, localRepo, srv.runtime.authConfig); err != nil { |
| return err |
| } |
| fmt.Fprintf(stdout, "Push completed\n") |
| return nil |
| } else { |
| return err |
| } |
| return nil |
| } |
| fmt.Fprintf(stdout, "Pushing image %s..\n", img.Id) |
| err = srv.runtime.graph.PushImage(stdout, img, srv.runtime.authConfig) |
| if err != nil { |
| return err |
| } |
| fmt.Fprintf(stdout, "Push completed\n") |
| return nil |
| } |
| |
| func (srv *Server) CmdPull(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "pull", "NAME", "Pull an image or a repository from the registry") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| remote := cmd.Arg(0) |
| if remote == "" { |
| cmd.Usage() |
| return nil |
| } |
| |
| if srv.runtime.graph.LookupRemoteImage(remote, srv.runtime.authConfig) { |
| fmt.Fprintf(stdout, "Pulling %s...\n", remote) |
| if err := srv.runtime.graph.PullImage(remote, srv.runtime.authConfig); err != nil { |
| return err |
| } |
| fmt.Fprintf(stdout, "Pulled\n") |
| return nil |
| } |
| // FIXME: Allow pull repo:tag |
| fmt.Fprintf(stdout, "Pulling %s...\n", remote) |
| if err := srv.runtime.graph.PullRepository(stdout, remote, "", srv.runtime.repositories, srv.runtime.authConfig); err != nil { |
| return err |
| } |
| fmt.Fprintf(stdout, "Pull completed\n") |
| return nil |
| } |
| |
| func (srv *Server) CmdImages(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "images", "[OPTIONS] [NAME]", "List images") |
| //limit := cmd.Int("l", 0, "Only show the N most recent versions of each image") |
| quiet := cmd.Bool("q", false, "only show numeric IDs") |
| fl_a := cmd.Bool("a", false, "show all images") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() > 1 { |
| cmd.Usage() |
| return nil |
| } |
| var nameFilter string |
| if cmd.NArg() == 1 { |
| nameFilter = cmd.Arg(0) |
| } |
| w := tabwriter.NewWriter(stdout, 20, 1, 3, ' ', 0) |
| if !*quiet { |
| fmt.Fprintf(w, "REPOSITORY\tTAG\tID\tCREATED\tPARENT\n") |
| } |
| var allImages map[string]*Image |
| var err error |
| if *fl_a { |
| allImages, err = srv.runtime.graph.Map() |
| } else { |
| allImages, err = srv.runtime.graph.Heads() |
| } |
| if err != nil { |
| return err |
| } |
| for name, repository := range srv.runtime.repositories.Repositories { |
| if nameFilter != "" && name != nameFilter { |
| continue |
| } |
| for tag, id := range repository { |
| image, err := srv.runtime.graph.Get(id) |
| if err != nil { |
| log.Printf("Warning: couldn't load %s from %s/%s: %s", id, name, tag, err) |
| continue |
| } |
| delete(allImages, id) |
| if !*quiet { |
| for idx, field := range []string{ |
| /* REPOSITORY */ name, |
| /* TAG */ tag, |
| /* ID */ id, |
| /* CREATED */ HumanDuration(time.Now().Sub(image.Created)) + " ago", |
| /* PARENT */ srv.runtime.repositories.ImageName(image.Parent), |
| } { |
| if idx == 0 { |
| w.Write([]byte(field)) |
| } else { |
| w.Write([]byte("\t" + field)) |
| } |
| } |
| w.Write([]byte{'\n'}) |
| } else { |
| stdout.Write([]byte(image.Id + "\n")) |
| } |
| } |
| } |
| // Display images which aren't part of a |
| if nameFilter == "" { |
| for id, image := range allImages { |
| if !*quiet { |
| for idx, field := range []string{ |
| /* REPOSITORY */ "<none>", |
| /* TAG */ "<none>", |
| /* ID */ id, |
| /* CREATED */ HumanDuration(time.Now().Sub(image.Created)) + " ago", |
| /* PARENT */ srv.runtime.repositories.ImageName(image.Parent), |
| } { |
| if idx == 0 { |
| w.Write([]byte(field)) |
| } else { |
| w.Write([]byte("\t" + field)) |
| } |
| } |
| w.Write([]byte{'\n'}) |
| } else { |
| stdout.Write([]byte(image.Id + "\n")) |
| } |
| } |
| } |
| if !*quiet { |
| w.Flush() |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdPs(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, |
| "ps", "[OPTIONS]", "List containers") |
| quiet := cmd.Bool("q", false, "Only display numeric IDs") |
| fl_all := cmd.Bool("a", false, "Show all containers. Only running containers are shown by default.") |
| fl_full := cmd.Bool("notrunc", false, "Don't truncate output") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| w := tabwriter.NewWriter(stdout, 12, 1, 3, ' ', 0) |
| if !*quiet { |
| fmt.Fprintf(w, "ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tCOMMENT\n") |
| } |
| for _, container := range srv.runtime.List() { |
| if !container.State.Running && !*fl_all { |
| continue |
| } |
| if !*quiet { |
| command := fmt.Sprintf("%s %s", container.Path, strings.Join(container.Args, " ")) |
| if !*fl_full { |
| command = Trunc(command, 20) |
| } |
| for idx, field := range []string{ |
| /* ID */ container.Id, |
| /* IMAGE */ srv.runtime.repositories.ImageName(container.Image), |
| /* COMMAND */ command, |
| /* CREATED */ HumanDuration(time.Now().Sub(container.Created)) + " ago", |
| /* STATUS */ container.State.String(), |
| /* COMMENT */ "", |
| } { |
| if idx == 0 { |
| w.Write([]byte(field)) |
| } else { |
| w.Write([]byte("\t" + field)) |
| } |
| } |
| w.Write([]byte{'\n'}) |
| } else { |
| stdout.Write([]byte(container.Id + "\n")) |
| } |
| } |
| if !*quiet { |
| w.Flush() |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdCommit(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, |
| "commit", "[OPTIONS] CONTAINER [REPOSITORY [TAG]]", |
| "Create a new image from a container's changes") |
| fl_comment := cmd.String("m", "", "Commit message") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| containerName, repository, tag := cmd.Arg(0), cmd.Arg(1), cmd.Arg(2) |
| if containerName == "" { |
| cmd.Usage() |
| return nil |
| } |
| img, err := srv.runtime.Commit(containerName, repository, tag, *fl_comment) |
| if err != nil { |
| return err |
| } |
| fmt.Fprintln(stdout, img.Id) |
| return nil |
| } |
| |
| func (srv *Server) CmdExport(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, |
| "export", "CONTAINER", |
| "Export the contents of a filesystem as a tar archive") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| name := cmd.Arg(0) |
| if container := srv.runtime.Get(name); container != nil { |
| data, err := container.Export() |
| if err != nil { |
| return err |
| } |
| // Stream the entire contents of the container (basically a volatile snapshot) |
| if _, err := io.Copy(stdout, data); err != nil { |
| return err |
| } |
| return nil |
| } |
| return errors.New("No such container: " + name) |
| } |
| |
| func (srv *Server) CmdDiff(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, |
| "diff", "CONTAINER [OPTIONS]", |
| "Inspect changes on a container's filesystem") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 1 { |
| return errors.New("Not enough arguments") |
| } |
| if container := srv.runtime.Get(cmd.Arg(0)); container == nil { |
| return errors.New("No such container") |
| } else { |
| changes, err := container.Changes() |
| if err != nil { |
| return err |
| } |
| for _, change := range changes { |
| fmt.Fprintln(stdout, change.String()) |
| } |
| } |
| return nil |
| } |
| |
| func (srv *Server) CmdLogs(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "logs", "[OPTIONS] CONTAINER", "Fetch the logs of a container") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() != 1 { |
| cmd.Usage() |
| return nil |
| } |
| name := cmd.Arg(0) |
| if container := srv.runtime.Get(name); container != nil { |
| log_stdout, err := container.ReadLog("stdout") |
| if err != nil { |
| return err |
| } |
| log_stderr, err := container.ReadLog("stderr") |
| if err != nil { |
| return err |
| } |
| // FIXME: Interpolate stdout and stderr instead of concatenating them |
| // FIXME: Differentiate stdout and stderr in the remote protocol |
| if _, err := io.Copy(stdout, log_stdout); err != nil { |
| return err |
| } |
| if _, err := io.Copy(stdout, log_stderr); err != nil { |
| return err |
| } |
| return nil |
| } |
| return errors.New("No such container: " + cmd.Arg(0)) |
| } |
| |
| func (srv *Server) CmdAttach(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "attach", "[OPTIONS]", "Attach to a running container") |
| fl_i := cmd.Bool("i", false, "Attach to stdin") |
| fl_o := cmd.Bool("o", true, "Attach to stdout") |
| fl_e := cmd.Bool("e", true, "Attach to stderr") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() != 1 { |
| cmd.Usage() |
| return nil |
| } |
| name := cmd.Arg(0) |
| container := srv.runtime.Get(name) |
| if container == nil { |
| return errors.New("No such container: " + name) |
| } |
| var wg sync.WaitGroup |
| if *fl_i { |
| c_stdin, err := container.StdinPipe() |
| if err != nil { |
| return err |
| } |
| wg.Add(1) |
| go func() { io.Copy(c_stdin, stdin); wg.Add(-1) }() |
| } |
| if *fl_o { |
| c_stdout, err := container.StdoutPipe() |
| if err != nil { |
| return err |
| } |
| wg.Add(1) |
| go func() { io.Copy(stdout, c_stdout); wg.Add(-1) }() |
| } |
| if *fl_e { |
| c_stderr, err := container.StderrPipe() |
| if err != nil { |
| return err |
| } |
| wg.Add(1) |
| go func() { io.Copy(stdout, c_stderr); wg.Add(-1) }() |
| } |
| wg.Wait() |
| return nil |
| } |
| |
| // Ports type - Used to parse multiple -p flags |
| type ports []int |
| |
| func (p *ports) String() string { |
| return fmt.Sprint(*p) |
| } |
| |
| func (p *ports) Set(value string) error { |
| port, err := strconv.Atoi(value) |
| if err != nil { |
| return fmt.Errorf("Invalid port: %v", value) |
| } |
| *p = append(*p, port) |
| return nil |
| } |
| |
| // ListOpts type |
| type ListOpts []string |
| |
| func (opts *ListOpts) String() string { |
| return fmt.Sprint(*opts) |
| } |
| |
| func (opts *ListOpts) Set(value string) error { |
| *opts = append(*opts, value) |
| return nil |
| } |
| |
| func (srv *Server) CmdTag(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| cmd := rcli.Subcmd(stdout, "tag", "[OPTIONS] IMAGE REPOSITORY [TAG]", "Tag an image into a repository") |
| force := cmd.Bool("f", false, "Force") |
| if err := cmd.Parse(args); err != nil { |
| return nil |
| } |
| if cmd.NArg() < 2 { |
| cmd.Usage() |
| return nil |
| } |
| return srv.runtime.repositories.Set(cmd.Arg(1), cmd.Arg(2), cmd.Arg(0), *force) |
| } |
| |
| func (srv *Server) CmdRun(stdin io.ReadCloser, stdout io.Writer, args ...string) error { |
| config, err := ParseRun(args) |
| if err != nil { |
| return err |
| } |
| if config.Image == "" { |
| return fmt.Errorf("Image not specified") |
| } |
| if len(config.Cmd) == 0 { |
| return fmt.Errorf("Command not specified") |
| } |
| // Create new container |
| container, err := srv.runtime.Create(config) |
| if err != nil { |
| return errors.New("Error creating container: " + err.Error()) |
| } |
| if config.OpenStdin { |
| cmd_stdin, err := container.StdinPipe() |
| if err != nil { |
| return err |
| } |
| if !config.Detach { |
| Go(func() error { |
| _, err := io.Copy(cmd_stdin, stdin) |
| cmd_stdin.Close() |
| return err |
| }) |
| } |
| } |
| // Run the container |
| if !config.Detach { |
| cmd_stderr, err := container.StderrPipe() |
| if err != nil { |
| return err |
| } |
| cmd_stdout, err := container.StdoutPipe() |
| if err != nil { |
| return err |
| } |
| if err := container.Start(); err != nil { |
| return err |
| } |
| sending_stdout := Go(func() error { |
| _, err := io.Copy(stdout, cmd_stdout) |
| return err |
| }) |
| sending_stderr := Go(func() error { |
| _, err := io.Copy(stdout, cmd_stderr) |
| return err |
| }) |
| err_sending_stdout := <-sending_stdout |
| err_sending_stderr := <-sending_stderr |
| if err_sending_stdout != nil { |
| return err_sending_stdout |
| } |
| if err_sending_stderr != nil { |
| return err_sending_stderr |
| } |
| container.Wait() |
| } else { |
| if err := container.Start(); err != nil { |
| return err |
| } |
| fmt.Fprintln(stdout, container.Id) |
| } |
| return nil |
| } |
| |
| func NewServer() (*Server, error) { |
| rand.Seed(time.Now().UTC().UnixNano()) |
| if runtime.GOARCH != "amd64" { |
| log.Fatalf("The docker runtime currently only supports amd64 (not %s). This will change in the future. Aborting.", runtime.GOARCH) |
| } |
| runtime, err := NewRuntime() |
| if err != nil { |
| return nil, err |
| } |
| srv := &Server{ |
| runtime: runtime, |
| } |
| return srv, nil |
| } |
| |
| type Server struct { |
| runtime *Runtime |
| } |