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https://github.com/containers/podman.git
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8a16674722
add the ability to checkpoint and restore containers on v2podman Signed-off-by: Brent Baude <bbaude@redhat.com>
105 lines
3.8 KiB
Go
105 lines
3.8 KiB
Go
package containers
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import (
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"context"
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"fmt"
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"github.com/containers/libpod/cmd/podmanV2/parse"
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"github.com/containers/libpod/cmd/podmanV2/registry"
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"github.com/containers/libpod/cmd/podmanV2/utils"
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"github.com/containers/libpod/pkg/domain/entities"
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"github.com/containers/libpod/pkg/rootless"
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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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restoreDescription = `
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podman container restore
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Restores a container from a checkpoint. The container name or ID can be used.
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`
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restoreCommand = &cobra.Command{
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Use: "restore [flags] CONTAINER [CONTAINER...]",
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Short: "Restores one or more containers from a checkpoint",
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Long: restoreDescription,
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RunE: restore,
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Args: func(cmd *cobra.Command, args []string) error {
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return parse.CheckAllLatestAndCIDFile(cmd, args, true, false)
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},
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Example: `podman container restore ctrID
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podman container restore --latest
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podman container restore --all`,
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}
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)
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var (
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restoreOptions entities.RestoreOptions
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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: restoreCommand,
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Parent: containerCmd,
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})
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flags := restoreCommand.Flags()
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flags.BoolVarP(&restoreOptions.All, "all", "a", false, "Restore all checkpointed containers")
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flags.BoolVarP(&restoreOptions.Keep, "keep", "k", false, "Keep all temporary checkpoint files")
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flags.BoolVarP(&restoreOptions.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
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flags.BoolVar(&restoreOptions.TCPEstablished, "tcp-established", false, "Restore a container with established TCP connections")
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flags.StringVarP(&restoreOptions.Import, "import", "i", "", "Restore from exported checkpoint archive (tar.gz)")
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flags.StringVarP(&restoreOptions.Name, "name", "n", "", "Specify new name for container restored from exported checkpoint (only works with --import)")
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flags.BoolVar(&restoreOptions.IgnoreRootFS, "ignore-rootfs", false, "Do not apply root file-system changes when importing from exported checkpoint")
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flags.BoolVar(&restoreOptions.IgnoreStaticIP, "ignore-static-ip", false, "Ignore IP address set via --static-ip")
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flags.BoolVar(&restoreOptions.IgnoreStaticMAC, "ignore-static-mac", false, "Ignore MAC address set via --mac-address")
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if registry.IsRemote() {
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_ = flags.MarkHidden("latest")
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}
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}
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func restore(cmd *cobra.Command, args []string) error {
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var errs utils.OutputErrors
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if rootless.IsRootless() {
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return errors.New("restoring a container requires root")
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}
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if restoreOptions.Import == "" && restoreOptions.IgnoreRootFS {
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return errors.Errorf("--ignore-rootfs can only be used with --import")
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}
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if restoreOptions.Import == "" && restoreOptions.Name != "" {
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return errors.Errorf("--name can only be used with --import")
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}
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if restoreOptions.Name != "" && restoreOptions.TCPEstablished {
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return errors.Errorf("--tcp-established cannot be used with --name")
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}
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argLen := len(args)
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if restoreOptions.Import != "" {
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if restoreOptions.All || restoreOptions.Latest {
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return errors.Errorf("Cannot use --import with --all or --latest")
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}
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if argLen > 0 {
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return errors.Errorf("Cannot use --import with positional arguments")
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}
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}
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if (restoreOptions.All || restoreOptions.Latest) && argLen > 0 {
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return errors.Errorf("no arguments are needed with --all or --latest")
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}
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if argLen < 1 && !restoreOptions.All && !restoreOptions.Latest && restoreOptions.Import == "" {
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return errors.Errorf("you must provide at least one name or id")
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}
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responses, err := registry.ContainerEngine().ContainerRestore(context.Background(), args, restoreOptions)
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if err != nil {
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return err
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}
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for _, r := range responses {
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if r.Err == nil {
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fmt.Println(r.Id)
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} else {
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errs = append(errs, r.Err)
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}
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}
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return errs.PrintErrors()
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}
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