85 lines
2.8 KiB
Go
85 lines
2.8 KiB
Go
package main
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import (
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"context"
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"fmt"
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"os"
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"github.com/containers/libpod/cmd/podman/cliconfig"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/libpod"
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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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checkpointCommand cliconfig.CheckpointValues
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checkpointDescription = `
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podman container checkpoint
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Checkpoints one or more running containers. The container name or ID can be used.
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`
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_checkpointCommand = &cobra.Command{
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Use: "checkpoint [flags] CONTAINER [CONTAINER...]",
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Short: "Checkpoints one or more containers",
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Long: checkpointDescription,
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RunE: func(cmd *cobra.Command, args []string) error {
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checkpointCommand.InputArgs = args
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checkpointCommand.GlobalFlags = MainGlobalOpts
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return checkpointCmd(&checkpointCommand)
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},
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Args: func(cmd *cobra.Command, args []string) error {
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return checkAllAndLatest(cmd, args, false)
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},
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Example: `podman container checkpoint --keep ctrID
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podman container checkpoint --all
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podman container checkpoint --leave-running --latest`,
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}
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)
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func init() {
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checkpointCommand.Command = _checkpointCommand
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checkpointCommand.SetHelpTemplate(HelpTemplate())
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checkpointCommand.SetUsageTemplate(UsageTemplate())
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flags := checkpointCommand.Flags()
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flags.BoolVarP(&checkpointCommand.Keep, "keep", "k", false, "Keep all temporary checkpoint files")
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flags.BoolVarP(&checkpointCommand.LeaveRunning, "leave-running", "R", false, "Leave the container running after writing checkpoint to disk")
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flags.BoolVar(&checkpointCommand.TcpEstablished, "tcp-established", false, "Checkpoint a container with established TCP connections")
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flags.BoolVarP(&checkpointCommand.All, "all", "a", false, "Checkpoint all running containers")
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flags.BoolVarP(&checkpointCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
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markFlagHiddenForRemoteClient("latest", flags)
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}
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func checkpointCmd(c *cliconfig.CheckpointValues) error {
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if rootless.IsRootless() {
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return errors.New("checkpointing a container requires root")
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}
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runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
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if err != nil {
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return errors.Wrapf(err, "could not get runtime")
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}
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defer runtime.Shutdown(false)
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options := libpod.ContainerCheckpointOptions{
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Keep: c.Keep,
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KeepRunning: c.LeaveRunning,
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TCPEstablished: c.TcpEstablished,
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}
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containers, lastError := getAllOrLatestContainers(&c.PodmanCommand, runtime, libpod.ContainerStateRunning, "running")
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for _, ctr := range containers {
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if err = ctr.Checkpoint(context.TODO(), options); err != nil {
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if lastError != nil {
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fmt.Fprintln(os.Stderr, lastError)
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}
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lastError = errors.Wrapf(err, "failed to checkpoint container %v", ctr.ID())
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} else {
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fmt.Println(ctr.ID())
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}
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}
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return lastError
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}
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