package main import ( "encoding/json" "fmt" "os" "strings" "github.com/containers/common/pkg/auth" "github.com/containers/common/pkg/completion" "github.com/containers/common/pkg/report" "github.com/containers/podman/v3/cmd/podman/common" "github.com/containers/podman/v3/cmd/podman/registry" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/podman/v3/pkg/errorhandling" "github.com/pkg/errors" "github.com/spf13/cobra" ) type cliAutoUpdateOptions struct { entities.AutoUpdateOptions format string } var ( autoUpdateOptions = cliAutoUpdateOptions{} autoUpdateDescription = `Auto update containers according to their auto-update policy. Auto-update policies are specified with the "io.containers.autoupdate" label. Containers are expected to run in systemd units created with "podman-generate-systemd --new", or similar units that create new containers in order to run the updated images. Please refer to the podman-auto-update(1) man page for details.` autoUpdateCommand = &cobra.Command{ Annotations: map[string]string{registry.EngineMode: registry.ABIMode}, Use: "auto-update [options]", Short: "Auto update containers according to their auto-update policy", Long: autoUpdateDescription, RunE: autoUpdate, ValidArgsFunction: completion.AutocompleteNone, Example: `podman auto-update podman auto-update --authfile ~/authfile.json`, } ) func init() { registry.Commands = append(registry.Commands, registry.CliCommand{ Command: autoUpdateCommand, }) flags := autoUpdateCommand.Flags() authfileFlagName := "authfile" flags.StringVar(&autoUpdateOptions.Authfile, authfileFlagName, auth.GetDefaultAuthFile(), "Path to the authentication file. Use REGISTRY_AUTH_FILE environment variable to override") _ = autoUpdateCommand.RegisterFlagCompletionFunc(authfileFlagName, completion.AutocompleteDefault) flags.StringVar(&autoUpdateOptions.format, "format", "", "Change the output format to JSON or a Go template") _ = autoUpdateCommand.RegisterFlagCompletionFunc("format", common.AutocompleteFormat(autoUpdateOutput{})) } func autoUpdate(cmd *cobra.Command, args []string) error { if len(args) > 0 { // Backwards compat. System tests expect this error string. return errors.Errorf("`%s` takes no arguments", cmd.CommandPath()) } allReports, failures := registry.ContainerEngine().AutoUpdate(registry.GetContext(), autoUpdateOptions.AutoUpdateOptions) if allReports == nil { return errorhandling.JoinErrors(failures) } if err := writeTemplate(allReports, autoUpdateOptions.format); err != nil { failures = append(failures, err) } return errorhandling.JoinErrors(failures) } type autoUpdateOutput struct { Unit string Container string ContainerName string ContainerID string Image string Policy string Updated string } func reportsToOutput(allReports []*entities.AutoUpdateReport) []autoUpdateOutput { output := make([]autoUpdateOutput, len(allReports)) for i, r := range allReports { output[i] = autoUpdateOutput{ Unit: r.SystemdUnit, Container: fmt.Sprintf("%s (%s)", r.ContainerID[:12], r.ContainerName), ContainerName: r.ContainerName, ContainerID: r.ContainerID, Image: r.ImageName, Policy: r.Policy, Updated: r.Updated, } } return output } func writeTemplate(allReports []*entities.AutoUpdateReport, inputFormat string) error { var format string var printHeader bool output := reportsToOutput(allReports) switch inputFormat { case "": rows := []string{"{{.Unit}}", "{{.Container}}", "{{.Image}}", "{{.Policy}}", "{{.Updated}}"} format = "{{range . }}" + strings.Join(rows, "\t") + "\n{{end -}}" printHeader = true case "json": prettyJSON, err := json.MarshalIndent(output, "", " ") if err != nil { return err } fmt.Println(string(prettyJSON)) return nil default: format = "{{range . }}" + inputFormat + "\n{{end -}}" } tmpl, err := report.NewTemplate("auto-update").Parse(format) if err != nil { return err } w, err := report.NewWriterDefault(os.Stdout) if err != nil { return err } defer w.Flush() if printHeader { headers := report.Headers(autoUpdateOutput{}, nil) if err := tmpl.Execute(w, headers); err != nil { return err } } return tmpl.Execute(w, output) }