Golang utils.TruncateId函數代碼示例

// Test that an image can be deleted by its shorthand prefix
func TestDeletePrefix(t *testing.T) {
	graph := tempGraph(t)
	defer os.RemoveAll(graph.Root)
	img := createTestImage(graph, t)
	if err := graph.Delete(utils.TruncateId(img.Id)); err != nil {
		t.Fatal(err)
	}
	assertNImages(graph, t, 0)
}

func (srv *Server) ImagesViz(out io.Writer) error {
	images, _ := srv.runtime.graph.All()
	if images == nil {
		return nil
	}
	out.Write([]byte("digraph docker {\n"))

	var (
		parentImage *Image
		err         error
	)
	for _, image := range images {
		parentImage, err = image.GetParent()
		if err != nil {
			return fmt.Errorf("Error while getting parent image: %v", err)
		}
		if parentImage != nil {
			out.Write([]byte(" \"" + parentImage.ShortId() + "\" -> \"" + image.ShortId() + "\"\n"))
		} else {
			out.Write([]byte(" base -> \"" + image.ShortId() + "\" [style=invis]\n"))
		}
	}

	reporefs := make(map[string][]string)

	for name, repository := range srv.runtime.repositories.Repositories {
		for tag, id := range repository {
			reporefs[utils.TruncateId(id)] = append(reporefs[utils.TruncateId(id)], fmt.Sprintf("%s:%s", name, tag))
		}
	}

	for id, repos := range reporefs {
		out.Write([]byte(" \"" + id + "\" [label=\"" + id + "\\n" + strings.Join(repos, "\\n") + "\",shape=box,fillcolor=\"paleturquoise\",style=\"filled,rounded\"];\n"))
	}
	out.Write([]byte(" base [style=invisible]\n}\n"))
	return nil
}

func (cli *DockerCli) CmdPs(args ...string) error {
	cmd := Subcmd("ps", "[OPTIONS]", "List containers")
	quiet := cmd.Bool("q", false, "Only display numeric IDs")
	all := cmd.Bool("a", false, "Show all containers. Only running containers are shown by default.")
	noTrunc := cmd.Bool("notrunc", false, "Don't truncate output")
	nLatest := cmd.Bool("l", false, "Show only the latest created container, include non-running ones.")
	since := cmd.String("sinceId", "", "Show only containers created since Id, include non-running ones.")
	before := cmd.String("beforeId", "", "Show only container created before Id, include non-running ones.")
	last := cmd.Int("n", -1, "Show n last created containers, include non-running ones.")

	if err := cmd.Parse(args); err != nil {
		return nil
	}
	v := url.Values{}
	if *last == -1 && *nLatest {
		*last = 1
	}
	if *all {
		v.Set("all", "1")
	}
	if *last != -1 {
		v.Set("limit", strconv.Itoa(*last))
	}
	if *since != "" {
		v.Set("since", *since)
	}
	if *before != "" {
		v.Set("before", *before)
	}

	body, _, err := cli.call("GET", "/containers/json?"+v.Encode(), nil)
	if err != nil {
		return err
	}

	var outs []ApiContainers
	err = json.Unmarshal(body, &outs)
	if err != nil {
		return err
	}
	w := tabwriter.NewWriter(os.Stdout, 20, 1, 3, ' ', 0)
	if !*quiet {
		fmt.Fprintln(w, "ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tPORTS")
	}

	for _, out := range outs {
		if !*quiet {
			if *noTrunc {
				fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\n", out.Id, out.Image, out.Command, utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))), out.Status, out.Ports)
			} else {
				fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\n", utils.TruncateId(out.Id), out.Image, utils.Trunc(out.Command, 20), utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))), out.Status, out.Ports)
			}
		} else {
			if *noTrunc {
				fmt.Fprintln(w, out.Id)
			} else {
				fmt.Fprintln(w, utils.TruncateId(out.Id))
			}
		}
	}

	if !*quiet {
		w.Flush()
	}
	return nil
}

func (cli *DockerCli) CmdImages(args ...string) error {
	cmd := Subcmd("images", "[OPTIONS] [NAME]", "List images")
	quiet := cmd.Bool("q", false, "only show numeric IDs")
	all := cmd.Bool("a", false, "show all images")
	noTrunc := cmd.Bool("notrunc", false, "Don't truncate output")
	flViz := cmd.Bool("viz", false, "output graph in graphviz format")

	if err := cmd.Parse(args); err != nil {
		return nil
	}
	if cmd.NArg() > 1 {
		cmd.Usage()
		return nil
	}

	if *flViz {
		body, _, err := cli.call("GET", "/images/viz", false)
		if err != nil {
			return err
		}
		fmt.Printf("%s", body)
	} else {
		v := url.Values{}
		if cmd.NArg() == 1 {
			v.Set("filter", cmd.Arg(0))
		}
		if *all {
			v.Set("all", "1")
		}

		body, _, err := cli.call("GET", "/images/json?"+v.Encode(), nil)
		if err != nil {
			return err
		}

		var outs []ApiImages
		err = json.Unmarshal(body, &outs)
		if err != nil {
			return err
		}

		w := tabwriter.NewWriter(os.Stdout, 20, 1, 3, ' ', 0)
		if !*quiet {
			fmt.Fprintln(w, "REPOSITORY\tTAG\tID\tCREATED")
		}

		for _, out := range outs {
			if out.Repository == "" {
				out.Repository = "<none>"
			}
			if out.Tag == "" {
				out.Tag = "<none>"
			}

			if !*quiet {
				fmt.Fprintf(w, "%s\t%s\t", out.Repository, out.Tag)
				if *noTrunc {
					fmt.Fprintf(w, "%s\t", out.Id)
				} else {
					fmt.Fprintf(w, "%s\t", utils.TruncateId(out.Id))
				}
				fmt.Fprintf(w, "%s ago\n", utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))))
			} else {
				if *noTrunc {
					fmt.Fprintln(w, out.Id)
				} else {
					fmt.Fprintln(w, utils.TruncateId(out.Id))
				}
			}
		}

		if !*quiet {
			w.Flush()
		}
	}
	return nil
}

// ShortId returns a shorthand version of the container's id for convenience.
// A collision with other container shorthands is very unlikely, but possible.
// In case of a collision a lookup with Runtime.Get() will fail, and the caller
// will need to use a langer prefix, or the full-length container Id.
func (container *Container) ShortId() string {
	return utils.TruncateId(container.Id)
}

func (image *Image) ShortId() string {
	return utils.TruncateId(image.Id)
}

func (store *TagStore) ImageName(id string) string {
	if names, exists := store.ById()[id]; exists && len(names) > 0 {
		return names[0]
	}
	return utils.TruncateId(id)
}