ctr: move containers command
Signed-off-by: Jess Valarezo <valarezo.jessica@gmail.com>
This commit is contained in:
Jess Valarezo
parent
8c77d9ac72
commit
47fae4dd17
210
cmd/ctr/commands/containers/containers.go
Normal file
210
cmd/ctr/commands/containers/containers.go
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@ -0,0 +1,210 @@
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package containers
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import (
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"context"
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"errors"
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"fmt"
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"os"
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"strings"
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"text/tabwriter"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/log"
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"github.com/urfave/cli"
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)
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// Command is the cli command for managing containers
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var Command = cli.Command{
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Name: "containers",
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Usage: "manage containers",
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Aliases: []string{"c"},
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Subcommands: []cli.Command{
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listCommand,
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deleteCommand,
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setLabelsCommand,
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infoCommand,
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},
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}
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var listCommand = cli.Command{
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Name: "list",
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Aliases: []string{"ls"},
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Usage: "list containers",
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ArgsUsage: "[flags] [<filter>, ...]",
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "quiet, q",
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Usage: "print only the container id",
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},
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},
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Action: func(context *cli.Context) error {
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var (
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filters = context.Args()
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quiet = context.Bool("quiet")
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)
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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containers, err := client.Containers(ctx, filters...)
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if err != nil {
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return err
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}
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if quiet {
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for _, c := range containers {
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fmt.Printf("%s\n", c.ID())
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}
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return nil
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}
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w := tabwriter.NewWriter(os.Stdout, 4, 8, 4, ' ', 0)
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fmt.Fprintln(w, "CONTAINER\tIMAGE\tRUNTIME\t")
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for _, c := range containers {
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info, err := c.Info(ctx)
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if err != nil {
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return err
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}
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imageName := info.Image
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if imageName == "" {
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imageName = "-"
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}
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if _, err := fmt.Fprintf(w, "%s\t%s\t%s\t\n",
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c.ID(),
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imageName,
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info.Runtime.Name,
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); err != nil {
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return err
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}
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}
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return w.Flush()
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},
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}
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var deleteCommand = cli.Command{
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Name: "delete",
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Usage: "delete one or more existing containers",
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ArgsUsage: "[flags] CONTAINER [CONTAINER, ...]",
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Aliases: []string{"del", "rm"},
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "keep-snapshot",
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Usage: "do not clean up snapshot with container",
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},
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},
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Action: func(context *cli.Context) error {
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var exitErr error
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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deleteOpts := []containerd.DeleteOpts{}
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if !context.Bool("keep-snapshot") {
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deleteOpts = append(deleteOpts, containerd.WithSnapshotCleanup)
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}
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if context.NArg() == 0 {
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return errors.New("must specify at least one container to delete")
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}
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for _, arg := range context.Args() {
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if err := deleteContainer(ctx, client, arg, deleteOpts...); err != nil {
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if exitErr == nil {
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exitErr = err
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}
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log.G(ctx).WithError(err).Errorf("failed to delete container %q", arg)
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}
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}
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return exitErr
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},
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}
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func deleteContainer(ctx context.Context, client *containerd.Client, id string, opts ...containerd.DeleteOpts) error {
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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task, err := container.Task(ctx, nil)
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if err != nil {
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return container.Delete(ctx, opts...)
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}
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status, err := task.Status(ctx)
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if err != nil {
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return err
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}
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if status.Status == containerd.Stopped || status.Status == containerd.Created {
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if _, err := task.Delete(ctx); err != nil {
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return err
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}
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return container.Delete(ctx, opts...)
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}
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return fmt.Errorf("cannot delete a non stopped container: %v", status)
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}
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var setLabelsCommand = cli.Command{
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Name: "label",
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Usage: "set and clear labels for a container",
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ArgsUsage: "[flags] <name> [<key>=<value>, ...]",
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Description: "set and clear labels for a container",
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Flags: []cli.Flag{},
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Action: func(context *cli.Context) error {
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containerID, labels := commands.ObjectWithLabelArgs(context)
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if containerID == "" {
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return errors.New("please specify a container")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, containerID)
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if err != nil {
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return err
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}
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setlabels, err := container.SetLabels(ctx, labels)
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if err != nil {
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return err
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}
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var labelStrings []string
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for k, v := range setlabels {
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labelStrings = append(labelStrings, fmt.Sprintf("%s=%s", k, v))
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}
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fmt.Println(strings.Join(labelStrings, ","))
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return nil
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},
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}
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var infoCommand = cli.Command{
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Name: "info",
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Usage: "get info about a container",
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ArgsUsage: "CONTAINER",
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Action: func(context *cli.Context) error {
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id := context.Args().First()
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if id == "" {
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return errors.New("container id must be provided")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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info, err := container.Info(ctx)
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if err != nil {
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return err
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}
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commands.PrintAsJSON(info)
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return nil
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},
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}
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@ -1,74 +0,0 @@
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package main
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import (
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"context"
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"errors"
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"fmt"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/log"
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"github.com/urfave/cli"
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)
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var containersDeleteCommand = cli.Command{
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Name: "delete",
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Usage: "delete one or more existing containers",
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ArgsUsage: "CONTAINER [CONTAINER, ...]",
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Aliases: []string{"del", "rm"},
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "keep-snapshot",
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Usage: "do not clean up snapshot with container",
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},
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},
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Action: func(context *cli.Context) error {
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var exitErr error
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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deleteOpts := []containerd.DeleteOpts{}
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if !context.Bool("keep-snapshot") {
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deleteOpts = append(deleteOpts, containerd.WithSnapshotCleanup)
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}
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if context.NArg() == 0 {
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return errors.New("must specify at least one container to delete")
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}
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for _, arg := range context.Args() {
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if err := deleteContainer(ctx, client, arg, deleteOpts...); err != nil {
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if exitErr == nil {
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exitErr = err
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}
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log.G(ctx).WithError(err).Errorf("failed to delete container %q", arg)
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}
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}
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return exitErr
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},
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}
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func deleteContainer(ctx context.Context, client *containerd.Client, id string, opts ...containerd.DeleteOpts) error {
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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task, err := container.Task(ctx, nil)
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if err != nil {
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return container.Delete(ctx, opts...)
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}
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status, err := task.Status(ctx)
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if err != nil {
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return err
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}
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if status.Status == containerd.Stopped || status.Status == containerd.Created {
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if _, err := task.Delete(ctx); err != nil {
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return err
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}
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return container.Delete(ctx, opts...)
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}
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return fmt.Errorf("cannot delete a non stopped container: %v", status)
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}
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@ -1,69 +0,0 @@
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package main
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import (
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"fmt"
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"os"
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"text/tabwriter"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/urfave/cli"
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)
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var containersCommand = cli.Command{
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Name: "containers",
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Usage: "manage containers (metadata)",
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Aliases: []string{"c"},
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "quiet, q",
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Usage: "print only the container id",
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},
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},
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Subcommands: []cli.Command{
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containersDeleteCommand,
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containersSetLabelsCommand,
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containerInfoCommand,
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},
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ArgsUsage: "[filter, ...]",
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Action: func(context *cli.Context) error {
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var (
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filters = context.Args()
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quiet = context.Bool("quiet")
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)
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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containers, err := client.Containers(ctx, filters...)
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if err != nil {
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return err
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}
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if quiet {
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for _, c := range containers {
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fmt.Printf("%s\n", c.ID())
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}
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return nil
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}
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w := tabwriter.NewWriter(os.Stdout, 4, 8, 4, ' ', 0)
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fmt.Fprintln(w, "CONTAINER\tIMAGE\tRUNTIME\t")
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for _, c := range containers {
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info, err := c.Info(ctx)
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if err != nil {
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return err
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}
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imageName := info.Image
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if imageName == "" {
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imageName = "-"
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}
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if _, err := fmt.Fprintf(w, "%s\t%s\t%s\t\n",
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c.ID(),
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imageName,
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info.Runtime.Name,
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); err != nil {
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return err
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}
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}
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return w.Flush()
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},
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}
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@ -1,35 +0,0 @@
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package main
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import (
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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)
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var containerInfoCommand = cli.Command{
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Name: "info",
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Usage: "get info about a container",
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ArgsUsage: "CONTAINER",
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Action: func(context *cli.Context) error {
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id := context.Args().First()
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if id == "" {
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return errors.New("container id must be provided")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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info, err := container.Info(ctx)
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if err != nil {
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return err
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}
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commands.PrintAsJSON(info)
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return nil
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},
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}
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@ -1,48 +0,0 @@
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package main
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/urfave/cli"
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)
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var containersSetLabelsCommand = cli.Command{
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Name: "label",
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Usage: "set and clear labels for a container.",
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ArgsUsage: "[flags] <name> [<key>=<value>, ...]",
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Description: "Set and clear labels for a container.",
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Flags: []cli.Flag{},
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Action: func(context *cli.Context) error {
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containerID, labels := commands.ObjectWithLabelArgs(context)
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if containerID == "" {
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return errors.New("please specify a container")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, containerID)
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if err != nil {
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return err
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}
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setlabels, err := container.SetLabels(ctx, labels)
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if err != nil {
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return err
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}
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var labelStrings []string
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for k, v := range setlabels {
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labelStrings = append(labelStrings, fmt.Sprintf("%s=%s", k, v))
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}
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fmt.Println(strings.Join(labelStrings, ","))
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return nil
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},
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}
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@ -8,6 +8,7 @@ import (
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"github.com/containerd/containerd/cmd/ctr/commands/plugins"
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versionCmd "github.com/containerd/containerd/cmd/ctr/commands/version"
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"github.com/containerd/containerd/cmd/ctr/commands/containers"
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"github.com/containerd/containerd/namespaces"
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"github.com/containerd/containerd/server"
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"github.com/containerd/containerd/version"
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@ -69,7 +70,7 @@ containerd CLI
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plugins.Command,
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versionCmd.Command,
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applyCommand,
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containersCommand,
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containers.Command,
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contentCommand,
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eventsCommand,
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fetchCommand,
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