mirror of https://github.com/containers/podman.git
124 lines
3.5 KiB
Go
124 lines
3.5 KiB
Go
package images
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import (
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"context"
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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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"text/template"
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"time"
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"github.com/containers/libpod/cmd/podmanV2/registry"
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"github.com/containers/libpod/cmd/podmanV2/report"
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"github.com/containers/libpod/pkg/domain/entities"
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jsoniter "github.com/json-iterator/go"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var (
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long = `Displays the history of an image.
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The information can be printed out in an easy to read, or user specified format, and can be truncated.`
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// podman _history_
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historyCmd = &cobra.Command{
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Use: "history [flags] IMAGE",
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Short: "Show history of a specified image",
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Long: long,
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Example: "podman history quay.io/fedora/fedora",
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Args: cobra.ExactArgs(1),
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PersistentPreRunE: preRunE,
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RunE: history,
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}
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opts = struct {
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human bool
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noTrunc bool
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quiet bool
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format string
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}{}
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
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Command: historyCmd,
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})
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historyCmd.SetHelpTemplate(registry.HelpTemplate())
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historyCmd.SetUsageTemplate(registry.UsageTemplate())
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flags := historyCmd.Flags()
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flags.StringVar(&opts.format, "format", "", "Change the output to JSON or a Go template")
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flags.BoolVarP(&opts.human, "human", "H", false, "Display sizes and dates in human readable format")
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flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate the output")
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flags.BoolVar(&opts.noTrunc, "notruncate", false, "Do not truncate the output")
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flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Display the numeric IDs only")
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}
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func history(cmd *cobra.Command, args []string) error {
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results, err := registry.ImageEngine().History(context.Background(), args[0], entities.ImageHistoryOptions{})
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if err != nil {
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return err
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}
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if opts.format == "json" {
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var err error
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if len(results.Layers) == 0 {
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_, err = fmt.Fprintf(os.Stdout, "[]\n")
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} else {
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// ah-hoc change to "Created": type and format
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type layer struct {
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entities.ImageHistoryLayer
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Created string `json:"Created"`
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}
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layers := make([]layer, len(results.Layers))
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for i, l := range results.Layers {
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layers[i].ImageHistoryLayer = l
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layers[i].Created = time.Unix(l.Created, 0).Format(time.RFC3339)
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}
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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enc := json.NewEncoder(os.Stdout)
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err = enc.Encode(layers)
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}
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return err
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}
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// Defaults
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hdr := "ID\tCREATED\tCREATED BY\tSIZE\tCOMMENT\n"
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row := "{{slice .ID 0 12}}\t{{humanDuration .Created}}\t{{ellipsis .CreatedBy 45}}\t{{.Size}}\t{{.Comment}}\n"
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if len(opts.format) > 0 {
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hdr = ""
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row = opts.format
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if !strings.HasSuffix(opts.format, "\n") {
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row += "\n"
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}
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} else {
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switch {
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case opts.human:
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row = "{{slice .ID 0 12}}\t{{humanDuration .Created}}\t{{ellipsis .CreatedBy 45}}\t{{humanSize .Size}}\t{{.Comment}}\n"
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case opts.noTrunc:
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row = "{{.ID}}\t{{humanDuration .Created}}\t{{.CreatedBy}}\t{{humanSize .Size}}\t{{.Comment}}\n"
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case opts.quiet:
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hdr = ""
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row = "{{.ID}}\n"
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}
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}
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format := hdr + "{{range . }}" + row + "{{end}}"
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tmpl := template.Must(template.New("report").Funcs(report.PodmanTemplateFuncs()).Parse(format))
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w := tabwriter.NewWriter(os.Stdout, 8, 2, 2, ' ', 0)
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_, _ = w.Write(report.ReportHeader("id", "created", "created by", "size", "comment"))
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err = tmpl.Execute(w, results.Layers)
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if err != nil {
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fmt.Fprintln(os.Stderr, errors.Wrapf(err, "Failed to print report"))
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}
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w.Flush()
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return nil
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}
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