|
| 1 | +package image |
| 2 | + |
| 3 | +import ( |
| 4 | + "fmt" |
| 5 | + "strconv" |
| 6 | + "strings" |
| 7 | + "text/tabwriter" |
| 8 | + "time" |
| 9 | + |
| 10 | + "golang.org/x/net/context" |
| 11 | + |
| 12 | + "github.com/docker/docker/api/client" |
| 13 | + "github.com/docker/docker/cli" |
| 14 | + "github.com/docker/docker/pkg/stringid" |
| 15 | + "github.com/docker/docker/pkg/stringutils" |
| 16 | + "github.com/docker/go-units" |
| 17 | + "github.com/spf13/cobra" |
| 18 | +) |
| 19 | + |
| 20 | +type historyOptions struct { |
| 21 | + image string |
| 22 | + |
| 23 | + human bool |
| 24 | + quiet bool |
| 25 | + noTrunc bool |
| 26 | +} |
| 27 | + |
| 28 | +// NewHistoryCommand create a new `docker history` command |
| 29 | +func NewHistoryCommand(dockerCli *client.DockerCli) *cobra.Command { |
| 30 | + var opts historyOptions |
| 31 | + |
| 32 | + cmd := &cobra.Command{ |
| 33 | + Use: "history [OPTIONS] IMAGE", |
| 34 | + Short: "Show the history of an image", |
| 35 | + Args: cli.ExactArgs(1), |
| 36 | + RunE: func(cmd *cobra.Command, args []string) error { |
| 37 | + opts.image = args[0] |
| 38 | + return runHistory(dockerCli, opts) |
| 39 | + }, |
| 40 | + } |
| 41 | + |
| 42 | + flags := cmd.Flags() |
| 43 | + |
| 44 | + flags.BoolVarP(&opts.human, "human", "H", true, "Print sizes and dates in human readable format") |
| 45 | + flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only show numeric IDs") |
| 46 | + flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Don't truncate output") |
| 47 | + |
| 48 | + return cmd |
| 49 | +} |
| 50 | + |
| 51 | +func runHistory(dockerCli *client.DockerCli, opts historyOptions) error { |
| 52 | + ctx := context.Background() |
| 53 | + |
| 54 | + history, err := dockerCli.Client().ImageHistory(ctx, opts.image) |
| 55 | + if err != nil { |
| 56 | + return err |
| 57 | + } |
| 58 | + |
| 59 | + w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0) |
| 60 | + |
| 61 | + if opts.quiet { |
| 62 | + for _, entry := range history { |
| 63 | + if opts.noTrunc { |
| 64 | + fmt.Fprintf(w, "%s\n", entry.ID) |
| 65 | + } else { |
| 66 | + fmt.Fprintf(w, "%s\n", stringid.TruncateID(entry.ID)) |
| 67 | + } |
| 68 | + } |
| 69 | + w.Flush() |
| 70 | + return nil |
| 71 | + } |
| 72 | + |
| 73 | + var imageID string |
| 74 | + var createdBy string |
| 75 | + var created string |
| 76 | + var size string |
| 77 | + |
| 78 | + fmt.Fprintln(w, "IMAGE\tCREATED\tCREATED BY\tSIZE\tCOMMENT") |
| 79 | + for _, entry := range history { |
| 80 | + imageID = entry.ID |
| 81 | + createdBy = strings.Replace(entry.CreatedBy, "\t", " ", -1) |
| 82 | + if opts.noTrunc == false { |
| 83 | + createdBy = stringutils.Truncate(createdBy, 45) |
| 84 | + imageID = stringid.TruncateID(entry.ID) |
| 85 | + } |
| 86 | + |
| 87 | + if opts.human { |
| 88 | + created = units.HumanDuration(time.Now().UTC().Sub(time.Unix(entry.Created, 0))) + " ago" |
| 89 | + size = units.HumanSize(float64(entry.Size)) |
| 90 | + } else { |
| 91 | + created = time.Unix(entry.Created, 0).Format(time.RFC3339) |
| 92 | + size = strconv.FormatInt(entry.Size, 10) |
| 93 | + } |
| 94 | + |
| 95 | + fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n", imageID, created, createdBy, size, entry.Comment) |
| 96 | + } |
| 97 | + w.Flush() |
| 98 | + return nil |
| 99 | +} |
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