github.com/containers/libpod@v1.9.4-0.20220419124438-4284fd425507/cmd/podman/generate_systemd.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/containers/libpod/cmd/podman/cliconfig"
     7  	"github.com/containers/libpod/pkg/adapter"
     8  	"github.com/pkg/errors"
     9  	"github.com/spf13/cobra"
    10  )
    11  
    12  var (
    13  	containerSystemdCommand     cliconfig.GenerateSystemdValues
    14  	containerSystemdDescription = `Command generates a systemd unit file for a Podman container
    15    `
    16  	_containerSystemdCommand = &cobra.Command{
    17  		Use:   "systemd [flags] CONTAINER | POD",
    18  		Short: "Generate a systemd unit file for a Podman container",
    19  		Long:  containerSystemdDescription,
    20  		RunE: func(cmd *cobra.Command, args []string) error {
    21  			containerSystemdCommand.InputArgs = args
    22  			containerSystemdCommand.GlobalFlags = MainGlobalOpts
    23  			containerSystemdCommand.Remote = remoteclient
    24  			return generateSystemdCmd(&containerSystemdCommand)
    25  		},
    26  		Args: func(cmd *cobra.Command, args []string) error {
    27  			if len(args) > 1 || len(args) < 1 {
    28  				return errors.New("provide only one container name or ID")
    29  			}
    30  			return nil
    31  		},
    32  		Example: `podman generate systemd ctrID
    33  `,
    34  	}
    35  )
    36  
    37  func init() {
    38  	containerSystemdCommand.Command = _containerSystemdCommand
    39  	containerSystemdCommand.SetHelpTemplate(HelpTemplate())
    40  	containerSystemdCommand.SetUsageTemplate(UsageTemplate())
    41  	flags := containerSystemdCommand.Flags()
    42  	flags.BoolVarP(&containerSystemdCommand.Name, "name", "n", false, "use the container/pod name instead of ID")
    43  	if !remoteclient {
    44  		flags.BoolVarP(&containerSystemdCommand.Files, "files", "f", false, "generate files instead of printing to stdout")
    45  	}
    46  	flags.UintVarP(&containerSystemdCommand.StopTimeout, "time", "t", defaultContainerConfig.Engine.StopTimeout, "stop timeout override")
    47  	flags.StringVar(&containerSystemdCommand.RestartPolicy, "restart-policy", "on-failure", "applicable systemd restart-policy")
    48  	flags.BoolVarP(&containerSystemdCommand.New, "new", "", false, "create a new container instead of starting an existing one")
    49  	flags.SetNormalizeFunc(aliasFlags)
    50  }
    51  
    52  func generateSystemdCmd(c *cliconfig.GenerateSystemdValues) error {
    53  	runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
    54  	if err != nil {
    55  		return errors.Wrapf(err, "could not get runtime")
    56  	}
    57  	defer runtime.DeferredShutdown(false)
    58  
    59  	unit, err := runtime.GenerateSystemd(c)
    60  	if err != nil {
    61  		return err
    62  	}
    63  	fmt.Println(unit)
    64  	return nil
    65  }