mirror of
https://github.com/podman-container-tools/podman.git
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93 lines
3.6 KiB
Go
93 lines
3.6 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/common/pkg/completion"
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"github.com/containers/podman/v2/cmd/podman/common"
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"github.com/containers/podman/v2/cmd/podman/registry"
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"github.com/containers/podman/v2/cmd/podman/utils"
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"github.com/containers/podman/v2/cmd/podman/validate"
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"github.com/containers/podman/v2/pkg/domain/entities"
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"github.com/containers/podman/v2/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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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 [options] CONTAINER [CONTAINER...]",
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Short: "Checkpoints one or more containers",
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Long: checkpointDescription,
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RunE: checkpoint,
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Args: func(cmd *cobra.Command, args []string) error {
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return validate.CheckAllLatestAndCIDFile(cmd, args, false, false)
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},
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ValidArgsFunction: common.AutocompleteContainersRunning,
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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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var (
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checkpointOptions entities.CheckpointOptions
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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: checkpointCommand,
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Parent: containerCmd,
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})
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flags := checkpointCommand.Flags()
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flags.BoolVarP(&checkpointOptions.Keep, "keep", "k", false, "Keep all temporary checkpoint files")
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flags.BoolVarP(&checkpointOptions.LeaveRunning, "leave-running", "R", false, "Leave the container running after writing checkpoint to disk")
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flags.BoolVar(&checkpointOptions.TCPEstablished, "tcp-established", false, "Checkpoint a container with established TCP connections")
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flags.BoolVarP(&checkpointOptions.All, "all", "a", false, "Checkpoint all running containers")
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exportFlagName := "export"
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flags.StringVarP(&checkpointOptions.Export, exportFlagName, "e", "", "Export the checkpoint image to a tar.gz")
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_ = checkpointCommand.RegisterFlagCompletionFunc(exportFlagName, completion.AutocompleteDefault)
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flags.BoolVar(&checkpointOptions.IgnoreRootFS, "ignore-rootfs", false, "Do not include root file-system changes when exporting")
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flags.BoolVar(&checkpointOptions.IgnoreVolumes, "ignore-volumes", false, "Do not export volumes associated with container")
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flags.BoolVarP(&checkpointOptions.PreCheckPoint, "pre-checkpoint", "P", false, "Dump container's memory information only, leave the container running")
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flags.BoolVar(&checkpointOptions.WithPrevious, "with-previous", false, "Checkpoint container with pre-checkpoint images")
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validate.AddLatestFlag(checkpointCommand, &checkpointOptions.Latest)
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}
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func checkpoint(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("checkpointing a container requires root")
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}
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if checkpointOptions.Export == "" && checkpointOptions.IgnoreRootFS {
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return errors.Errorf("--ignore-rootfs can only be used with --export")
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}
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if checkpointOptions.Export == "" && checkpointOptions.IgnoreVolumes {
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return errors.Errorf("--ignore-volumes can only be used with --export")
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}
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if checkpointOptions.WithPrevious && checkpointOptions.PreCheckPoint {
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return errors.Errorf("--with-previous can not be used with --pre-checkpoint")
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}
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responses, err := registry.ContainerEngine().ContainerCheckpoint(context.Background(), args, checkpointOptions)
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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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