podmanv2 checkpoint and restore

add the ability to checkpoint and restore containers on v2podman

Signed-off-by: Brent Baude <bbaude@redhat.com>

1 files changed, 0 insertions, 153 deletions

diff --git a/pkg/adapter/checkpoint_restore.go b/pkg/adapter/checkpoint_restore.go
deleted file mode 100644
index a5b74013b..000000000
--- a/pkg/adapter/checkpoint_restore.go
+++ /dev/null
@@ -1,153 +0,0 @@
-// +build !remoteclient
-
-package adapter
-
-import (
-	"context"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-
-	"github.com/containers/libpod/libpod"
-	"github.com/containers/libpod/libpod/image"
-	"github.com/containers/libpod/pkg/errorhandling"
-	"github.com/containers/libpod/pkg/util"
-	"github.com/containers/storage/pkg/archive"
-	jsoniter "github.com/json-iterator/go"
-	spec "github.com/opencontainers/runtime-spec/specs-go"
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-)
-
-// Prefixing the checkpoint/restore related functions with 'cr'
-
-// crImportFromJSON imports the JSON files stored in the exported
-// checkpoint tarball
-func crImportFromJSON(filePath string, v interface{}) error {
-	jsonFile, err := os.Open(filePath)
-	if err != nil {
-		return errors.Wrapf(err, "Failed to open container definition %s for restore", filePath)
-	}
-	defer errorhandling.CloseQuiet(jsonFile)
-
-	content, err := ioutil.ReadAll(jsonFile)
-	if err != nil {
-		return errors.Wrapf(err, "Failed to read container definition %s for restore", filePath)
-	}
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	if err = json.Unmarshal(content, v); err != nil {
-		return errors.Wrapf(err, "Failed to unmarshal container definition %s for restore", filePath)
-	}
-
-	return nil
-}
-
-// crImportCheckpoint it the function which imports the information
-// from checkpoint tarball and re-creates the container from that information
-func crImportCheckpoint(ctx context.Context, runtime *libpod.Runtime, input string, name string) ([]*libpod.Container, error) {
-	// First get the container definition from the
-	// tarball to a temporary directory
-	archiveFile, err := os.Open(input)
-	if err != nil {
-		return nil, errors.Wrapf(err, "Failed to open checkpoint archive %s for import", input)
-	}
-	defer errorhandling.CloseQuiet(archiveFile)
-	options := &archive.TarOptions{
-		// Here we only need the files config.dump and spec.dump
-		ExcludePatterns: []string{
-			"checkpoint",
-			"artifacts",
-			"ctr.log",
-			"rootfs-diff.tar",
-			"network.status",
-			"deleted.files",
-		},
-	}
-	dir, err := ioutil.TempDir("", "checkpoint")
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if err := os.RemoveAll(dir); err != nil {
-			logrus.Errorf("could not recursively remove %s: %q", dir, err)
-		}
-	}()
-	err = archive.Untar(archiveFile, dir, options)
-	if err != nil {
-		return nil, errors.Wrapf(err, "Unpacking of checkpoint archive %s failed", input)
-	}
-
-	// Load spec.dump from temporary directory
-	dumpSpec := new(spec.Spec)
-	if err := crImportFromJSON(filepath.Join(dir, "spec.dump"), dumpSpec); err != nil {
-		return nil, err
-	}
-
-	// Load config.dump from temporary directory
-	config := new(libpod.ContainerConfig)
-	if err = crImportFromJSON(filepath.Join(dir, "config.dump"), config); err != nil {
-		return nil, err
-	}
-
-	// This should not happen as checkpoints with these options are not exported.
-	if (len(config.Dependencies) > 0) || (len(config.NamedVolumes) > 0) {
-		return nil, errors.Errorf("Cannot import checkpoints of containers with named volumes or dependencies")
-	}
-
-	ctrID := config.ID
-	newName := false
-
-	// Check if the restored container gets a new name
-	if name != "" {
-		config.ID = ""
-		config.Name = name
-		newName = true
-	}
-
-	ctrName := config.Name
-
-	// The code to load the images is copied from create.go
-	// In create.go this only set if '--quiet' does not exist.
-	writer := os.Stderr
-	rtc, err := runtime.GetConfig()
-	if err != nil {
-		return nil, err
-	}
-
-	_, err = runtime.ImageRuntime().New(ctx, config.RootfsImageName, rtc.Engine.SignaturePolicyPath, "", writer, nil, image.SigningOptions{}, nil, util.PullImageMissing)
-	if err != nil {
-		return nil, err
-	}
-
-	// Now create a new container from the just loaded information
-	container, err := runtime.RestoreContainer(ctx, dumpSpec, config)
-	if err != nil {
-		return nil, err
-	}
-
-	var containers []*libpod.Container
-	if container == nil {
-		return nil, nil
-	}
-
-	containerConfig := container.Config()
-	if containerConfig.Name != ctrName {
-		return nil, errors.Errorf("Name of restored container (%s) does not match requested name (%s)", containerConfig.Name, ctrName)
-	}
-
-	if !newName {
-		// Only check ID for a restore with the same name.
-		// Using -n to request a new name for the restored container, will also create a new ID
-		if containerConfig.ID != ctrID {
-			return nil, errors.Errorf("ID of restored container (%s) does not match requested ID (%s)", containerConfig.ID, ctrID)
-		}
-	}
-
-	// Check if the ExitCommand points to the correct container ID
-	if containerConfig.ExitCommand[len(containerConfig.ExitCommand)-1] != containerConfig.ID {
-		return nil, errors.Errorf("'ExitCommandID' uses ID %s instead of container ID %s", containerConfig.ExitCommand[len(containerConfig.ExitCommand)-1], containerConfig.ID)
-	}
-
-	containers = append(containers, container)
-	return containers, nil
-}