mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
package system
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import (
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"fmt"
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"strings"
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"golang.org/x/net/context"
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/api/client/inspect"
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"github.com/docker/docker/cli"
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apiclient "github.com/docker/engine-api/client"
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"github.com/spf13/cobra"
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)
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type inspectOptions struct {
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format string
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inspectType string
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size bool
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ids []string
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}
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// NewInspectCommand creates a new cobra.Command for `docker inspect`
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func NewInspectCommand(dockerCli *client.DockerCli) *cobra.Command {
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var opts inspectOptions
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cmd := &cobra.Command{
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Use: "inspect [OPTIONS] CONTAINER|IMAGE|TASK [CONTAINER|IMAGE|TASK...]",
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Short: "Return low-level information on a container, image or task",
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Args: cli.RequiresMinArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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opts.ids = args
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return runInspect(dockerCli, opts)
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},
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}
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flags := cmd.Flags()
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flags.StringVarP(&opts.format, "format", "f", "", "Format the output using the given go template")
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flags.StringVar(&opts.inspectType, "type", "", "Return JSON for specified type, (e.g image, container or task)")
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flags.BoolVarP(&opts.size, "size", "s", false, "Display total file sizes if the type is container")
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return cmd
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}
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func runInspect(dockerCli *client.DockerCli, opts inspectOptions) error {
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ctx := context.Background()
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client := dockerCli.Client()
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var getRefFunc inspect.GetRefFunc
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switch opts.inspectType {
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case "container":
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getRefFunc = func(ref string) (interface{}, []byte, error) {
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return client.ContainerInspectWithRaw(ctx, ref, opts.size)
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}
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case "image":
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getRefFunc = func(ref string) (interface{}, []byte, error) {
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return client.ImageInspectWithRaw(ctx, ref, opts.size)
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}
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case "task":
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if opts.size {
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fmt.Fprintln(dockerCli.Err(), "WARNING: --size ignored for tasks")
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}
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getRefFunc = func(ref string) (interface{}, []byte, error) {
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return client.TaskInspectWithRaw(ctx, ref)
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}
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case "":
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getRefFunc = inspectAll(ctx, dockerCli, opts.size)
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default:
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return fmt.Errorf("%q is not a valid value for --type", opts.inspectType)
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}
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return inspect.Inspect(dockerCli.Out(), opts.ids, opts.format, getRefFunc)
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}
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func inspectAll(ctx context.Context, dockerCli *client.DockerCli, getSize bool) inspect.GetRefFunc {
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client := dockerCli.Client()
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return func(ref string) (interface{}, []byte, error) {
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c, rawContainer, err := client.ContainerInspectWithRaw(ctx, ref, getSize)
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if err == nil || !apiclient.IsErrNotFound(err) {
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return c, rawContainer, err
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}
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// Search for image with that id if a container doesn't exist.
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i, rawImage, err := client.ImageInspectWithRaw(ctx, ref, getSize)
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if err == nil || !apiclient.IsErrNotFound(err) {
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return i, rawImage, err
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}
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// Search for task with that id if an image doesn't exist.
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t, rawTask, err := client.TaskInspectWithRaw(ctx, ref)
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if err == nil || !(apiclient.IsErrNotFound(err) || isErrorNoSwarmMode(err)) {
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if getSize {
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fmt.Fprintln(dockerCli.Err(), "WARNING: --size ignored for tasks")
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}
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return t, rawTask, err
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}
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return nil, nil, fmt.Errorf("Error: No such container, image or task: %s", ref)
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}
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}
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func isErrorNoSwarmMode(err error) bool {
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return strings.Contains(err.Error(), "This node is not a swarm manager")
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}
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