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package pods
import (
"context"
"fmt"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v4/cmd/podman/common"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/spf13/cobra"
)
var (
podCloneDescription = `Create an exact copy of a pod and the containers within it`
podCloneCommand = &cobra.Command{
Use: "clone [options] POD NAME",
Short: "Clone an existing pod",
Long: podCloneDescription,
RunE: clone,
Args: cobra.RangeArgs(1, 2),
ValidArgsFunction: common.AutocompleteClone,
Example: `podman pod clone pod_name new_name`,
}
)
var (
podClone entities.PodCloneOptions
)
func cloneFlags(cmd *cobra.Command) {
flags := cmd.Flags()
destroyFlagName := "destroy"
flags.BoolVar(&podClone.Destroy, destroyFlagName, false, "destroy the original pod")
startFlagName := "start"
flags.BoolVar(&podClone.Start, startFlagName, false, "start the new pod")
nameFlagName := "name"
flags.StringVarP(&podClone.CreateOpts.Name, nameFlagName, "n", "", "name the new pod")
_ = podCloneCommand.RegisterFlagCompletionFunc(nameFlagName, completion.AutocompleteNone)
common.DefineCreateDefaults(&podClone.InfraOptions)
common.DefineCreateFlags(cmd, &podClone.InfraOptions, true, false)
podClone.InfraOptions.MemorySwappiness = -1 // this is not implemented for pods yet, need to set -1 default manually
// need to fill an empty ctr create option for each container for sane defaults
// for now, these cannot be used. The flag names conflict too much
// this makes sense since this is a pod command not a container command
// TODO: add support for container specific arguments/flags
common.DefineCreateDefaults(&podClone.PerContainerOptions)
}
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: podCloneCommand,
Parent: podCmd,
})
cloneFlags(podCloneCommand)
}
func clone(cmd *cobra.Command, args []string) error {
switch len(args) {
case 0:
return fmt.Errorf("must specify at least 1 argument: %w", define.ErrInvalidArg)
case 2:
podClone.CreateOpts.Name = args[1]
}
podClone.ID = args[0]
if cmd.Flag("shm-size").Changed {
podClone.InfraOptions.ShmSize = cmd.Flag("shm-size").Value.String()
}
podClone.PerContainerOptions.IsClone = true
rep, err := registry.ContainerEngine().PodClone(context.Background(), podClone)
if err != nil {
if rep != nil {
fmt.Printf("pod %s created but error after creation\n", rep.Id)
}
return err
}
fmt.Println(rep.Id)
return nil
}
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