Vendor in checkpointctl

checkpointctl contains common code to work with checkpoint images in
Podman, CRI-O and Kubernetes.

Use functions and definitions from checkpointctl where possible.

Signed-off-by: Adrian Reber <areber@redhat.com>

5 files changed, 435 insertions, 0 deletions

diff --git a/go.mod b/go.mod
index bec99270f..1972eb2d2 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,7 @@ require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/buger/goterm v0.0.0-20181115115552-c206103e1f37
+	github.com/checkpoint-restore/checkpointctl v0.0.0-20210301084134-a2024f5584e7
 	github.com/checkpoint-restore/go-criu v0.0.0-20190109184317-bdb7599cd87b
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/containernetworking/cni v0.8.1
diff --git a/go.sum b/go.sum
index f19b76d47..5dc568719 100644
--- a/go.sum
+++ b/go.sum
@@ -57,6 +57,8 @@ github.com/buger/goterm v0.0.0-20181115115552-c206103e1f37/go.mod h1:u9UyCz2eTrS
 github.com/buger/jsonparser v0.0.0-20180808090653-f4dd9f5a6b44/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/checkpoint-restore/checkpointctl v0.0.0-20210301084134-a2024f5584e7 h1:ZmSAEFFtv3mepC4/Ze6E/hi6vGZlhRvywqp1l+w+qqw=
+github.com/checkpoint-restore/checkpointctl v0.0.0-20210301084134-a2024f5584e7/go.mod h1:Kp3ezoDVdhfYxZUtgs4OL8sVvgOLz3txk0sbQD0opvw=
 github.com/checkpoint-restore/go-criu v0.0.0-20190109184317-bdb7599cd87b h1:T4nWG1TXIxeor8mAu5bFguPJgSIGhZqv/f0z55KCrJM=
 github.com/checkpoint-restore/go-criu v0.0.0-20190109184317-bdb7599cd87b/go.mod h1:TrMrLQfeENAPYPRsJuq3jsqdlRh3lvi6trTZJG8+tho=
 github.com/checkpoint-restore/go-criu/v4 v4.0.2/go.mod h1:xUQBLp4RLc5zJtWY++yjOoMoB5lihDt7fai+75m+rGw=
@@ -112,6 +114,8 @@ github.com/containers/ocicrypt v1.1.0 h1:A6UzSUFMla92uxO43O6lm86i7evMGjTY7wTKB2D
 github.com/containers/ocicrypt v1.1.0/go.mod h1:b8AOe0YR67uU8OqfVNcznfFpAzu3rdgUV4GP9qXPfu4=
 github.com/containers/psgo v1.5.2 h1:3aoozst/GIwsrr/5jnFy3FrJay98uujPCu9lTuSZ/Cw=
 github.com/containers/psgo v1.5.2/go.mod h1:2ubh0SsreMZjSXW1Hif58JrEcFudQyIy9EzPUWfawVU=
+github.com/containers/storage v1.23.5/go.mod h1:ha26Q6ngehFNhf3AWoXldvAvwI4jFe3ETQAf/CeZPyM=
+github.com/containers/storage v1.24.5 h1:BusfdU0rCS2/Daa/DPw+0iLfGRlYA7UVF7D0el3N7Vk=
 github.com/containers/storage v1.24.5/go.mod h1:YC+2pY8SkfEAcZkwycxYbpK8EiRbx5soPPwz9dxe4IQ=
 github.com/containers/storage v1.24.6/go.mod h1:YC+2pY8SkfEAcZkwycxYbpK8EiRbx5soPPwz9dxe4IQ=
 github.com/containers/storage v1.25.0 h1:p0PLlQcWmtE+7XLfOCR0WuYyMTby1yozpI4DaKOtWTA=
@@ -333,6 +337,8 @@ github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7V
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/klauspost/compress v1.11.0/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
+github.com/klauspost/compress v1.11.5 h1:xNCE0uE6yvTPRS+0wGNMHPo3NIpwnk6aluQZ6R6kRcc=
 github.com/klauspost/compress v1.11.5/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/klauspost/compress v1.11.7 h1:0hzRabrMN4tSTvMfnL3SCv1ZGeAP23ynzodBgaHeMeg=
 github.com/klauspost/compress v1.11.7/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
@@ -363,6 +369,7 @@ github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaO
 github.com/mattn/go-isatty v0.0.3/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
 github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-shellwords v1.0.3/go.mod h1:3xCvwCdWdlDJUrvuMn7Wuy9eWs4pE8vqg+NOMyg4B2o=
@@ -423,6 +430,7 @@ github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLA
 github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
+github.com/olekukonko/tablewriter v0.0.4/go.mod h1:zq6QwlOf5SlnkVbMSr5EoBv3636FWnp+qbPhuoO21uA=
 github.com/onsi/ginkgo v0.0.0-20151202141238-7f8ab55aaf3b/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -466,6 +474,7 @@ github.com/opencontainers/runtime-spec v1.0.3-0.20200817204227-f9c09b4ea1df/go.m
 github.com/opencontainers/runtime-tools v0.9.0 h1:FYgwVsKRI/H9hU32MJ/4MLOzXWodKK5zsQavY8NPMkU=
 github.com/opencontainers/runtime-tools v0.9.0/go.mod h1:r3f7wjNzSs2extwzU3Y+6pKfobzPh+kKFJ3ofN+3nfs=
 github.com/opencontainers/selinux v1.5.1/go.mod h1:yTcKuYAh6R95iDpefGLQaPaRwJFwyzAJufJyiTt7s0g=
+github.com/opencontainers/selinux v1.6.0/go.mod h1:VVGKuOLlE7v4PJyT6h7mNWvq1rzqiriPsEqVhc+svHE=
 github.com/opencontainers/selinux v1.8.0 h1:+77ba4ar4jsCbL1GLbFL8fFM57w6suPfSS9PDLDY7KM=
 github.com/opencontainers/selinux v1.8.0/go.mod h1:RScLhm78qiWa2gbVCcGkC7tCGdgk3ogry1nUQF8Evvo=
 github.com/openshift/imagebuilder v1.1.8 h1:gjiIl8pbNj0eC4XWvFJHATdDvYm64p9/pLDLQWoLZPA=
@@ -594,6 +603,7 @@ github.com/vishvananda/netns v0.0.0-20180720170159-13995c7128cc/go.mod h1:ZjcWmF
 github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae h1:4hwBBUfQCFe3Cym0ZtKyq7L16eZUtYKs+BaHDN6mAns=
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
+github.com/willf/bitset v1.1.11-0.20200630133818-d5bec3311243/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPySAYV4=
 github.com/willf/bitset v1.1.11 h1:N7Z7E9UvjW+sGsEl7k/SJrvY2reP1A07MrGuCjIOjRE=
 github.com/willf/bitset v1.1.11/go.mod h1:83CECat5yLh5zVOf4P1ErAgKA5UDvKtgyUABdr3+MjI=
 github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
diff --git a/vendor/github.com/checkpoint-restore/checkpointctl/LICENSE b/vendor/github.com/checkpoint-restore/checkpointctl/LICENSE
new file mode 100644
index 000000000..8dada3eda
--- /dev/null
+++ b/vendor/github.com/checkpoint-restore/checkpointctl/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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diff --git a/vendor/github.com/checkpoint-restore/checkpointctl/lib/metadata.go b/vendor/github.com/checkpoint-restore/checkpointctl/lib/metadata.go
new file mode 100644
index 000000000..1c74903ad
--- /dev/null
+++ b/vendor/github.com/checkpoint-restore/checkpointctl/lib/metadata.go
@@ -0,0 +1,221 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package metadata
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"os"
+	"path/filepath"
+	"time"
+
+	cnitypes "github.com/containernetworking/cni/pkg/types/current"
+	spec "github.com/opencontainers/runtime-spec/specs-go"
+	"github.com/pkg/errors"
+)
+
+type CheckpointedPod struct {
+	PodUID                 string                  `json:"io.kubernetes.pod.uid,omitempty"`
+	ID                     string                  `json:"SandboxID,omitempty"`
+	Name                   string                  `json:"io.kubernetes.pod.name,omitempty"`
+	TerminationGracePeriod int64                   `json:"io.kubernetes.pod.terminationGracePeriod,omitempty"`
+	Namespace              string                  `json:"io.kubernetes.pod.namespace,omitempty"`
+	ConfigSource           string                  `json:"kubernetes.io/config.source,omitempty"`
+	ConfigSeen             string                  `json:"kubernetes.io/config.seen,omitempty"`
+	Manager                string                  `json:"io.container.manager,omitempty"`
+	Containers             []CheckpointedContainer `json:"Containers"`
+	HostIP                 string                  `json:"hostIP,omitempty"`
+	PodIP                  string                  `json:"podIP,omitempty"`
+	PodIPs                 []string                `json:"podIPs,omitempty"`
+}
+
+type CheckpointedContainer struct {
+	Name                      string `json:"io.kubernetes.container.name,omitempty"`
+	ID                        string `json:"id,omitempty"`
+	TerminationMessagePath    string `json:"io.kubernetes.container.terminationMessagePath,omitempty"`
+	TerminationMessagePolicy  string `json:"io.kubernetes.container.terminationMessagePolicy,omitempty"`
+	RestartCounter            int32  `json:"io.kubernetes.container.restartCount,omitempty"`
+	TerminationMessagePathUID string `json:"terminationMessagePathUID,omitempty"`
+	Image                     string `json:"Image"`
+}
+
+type CheckpointMetadata struct {
+	Version          int `json:"version"`
+	CheckpointedPods []CheckpointedPod
+}
+
+const (
+	// kubelet archive
+	CheckpointedPodsFile = "checkpointed.pods"
+	// container archive
+	ConfigDumpFile      = "config.dump"
+	SpecDumpFile        = "spec.dump"
+	NetworkStatusFile   = "network.status"
+	CheckpointDirectory = "checkpoint"
+	RootFsDiffTar       = "rootfs-diff.tar"
+	DeletedFilesFile    = "deleted.files"
+	// pod archive
+	PodOptionsFile = "pod.options"
+	PodDumpFile    = "pod.dump"
+)
+
+type CheckpointType int
+
+const (
+	// The checkpoint archive contains a kubelet checkpoint
+	// One or multiple pods and kubelet metadata (checkpointed.pods)
+	Kubelet CheckpointType = iota
+	// The checkpoint archive contains one pod including one or multiple containers
+	Pod
+	// The checkpoint archive contains a single container
+	Container
+	Unknown
+)
+
+// This is a reduced copy of what Podman uses to store checkpoint metadata
+type ContainerConfig struct {
+	ID              string    `json:"id"`
+	Name            string    `json:"name"`
+	RootfsImageName string    `json:"rootfsImageName,omitempty"`
+	OCIRuntime      string    `json:"runtime,omitempty"`
+	CreatedTime     time.Time `json:"createdTime"`
+}
+
+// This is metadata stored inside of a Pod checkpoint archive
+type CheckpointedPodOptions struct {
+	Version      int      `json:"version"`
+	Containers   []string `json:"containers,omitempty"`
+	MountLabel   string   `json:"mountLabel"`
+	ProcessLabel string   `json:"processLabel"`
+}
+
+func DetectCheckpointArchiveType(checkpointDirectory string) (CheckpointType, error) {
+	_, err := os.Stat(filepath.Join(checkpointDirectory, CheckpointedPodsFile))
+	if err != nil && !os.IsNotExist(err) {
+		return Unknown, errors.Wrapf(err, "Failed to access %q\n", CheckpointedPodsFile)
+	}
+	if os.IsNotExist(err) {
+		return Container, nil
+	}
+
+	return Kubelet, nil
+}
+
+func ReadContainerCheckpointSpecDump(checkpointDirectory string) (*spec.Spec, string, error) {
+	var specDump spec.Spec
+	specDumpFile, err := ReadJSONFile(&specDump, checkpointDirectory, SpecDumpFile)
+
+	return &specDump, specDumpFile, err
+}
+
+func ReadContainerCheckpointConfigDump(checkpointDirectory string) (*ContainerConfig, string, error) {
+	var containerConfig ContainerConfig
+	configDumpFile, err := ReadJSONFile(&containerConfig, checkpointDirectory, ConfigDumpFile)
+
+	return &containerConfig, configDumpFile, err
+}
+
+func ReadContainerCheckpointDeletedFiles(checkpointDirectory string) ([]string, string, error) {
+	var deletedFiles []string
+	deletedFilesFile, err := ReadJSONFile(&deletedFiles, checkpointDirectory, DeletedFilesFile)
+
+	return deletedFiles, deletedFilesFile, err
+}
+
+func ReadContainerCheckpointNetworkStatus(checkpointDirectory string) ([]*cnitypes.Result, string, error) {
+	var networkStatus []*cnitypes.Result
+	networkStatusFile, err := ReadJSONFile(&networkStatus, checkpointDirectory, NetworkStatusFile)
+
+	return networkStatus, networkStatusFile, err
+}
+
+func ReadKubeletCheckpoints(checkpointsDirectory string) (*CheckpointMetadata, string, error) {
+	var checkpointMetadata CheckpointMetadata
+	checkpointMetadataPath, err := ReadJSONFile(&checkpointMetadata, checkpointsDirectory, CheckpointedPodsFile)
+
+	return &checkpointMetadata, checkpointMetadataPath, err
+}
+
+func GetIPFromNetworkStatus(networkStatus []*cnitypes.Result) net.IP {
+	if len(networkStatus) == 0 {
+		return nil
+	}
+	// Take the first IP address
+	if len(networkStatus[0].IPs) == 0 {
+		return nil
+	}
+	IP := networkStatus[0].IPs[0].Address.IP
+
+	return IP
+}
+
+func GetMACFromNetworkStatus(networkStatus []*cnitypes.Result) net.HardwareAddr {
+	if len(networkStatus) == 0 {
+		return nil
+	}
+	// Take the first device with a defined sandbox
+	if len(networkStatus[0].Interfaces) == 0 {
+		return nil
+	}
+	var MAC net.HardwareAddr
+	MAC = nil
+	for _, n := range networkStatus[0].Interfaces {
+		if n.Sandbox != "" {
+			MAC, _ = net.ParseMAC(n.Mac)
+
+			break
+		}
+	}
+
+	return MAC
+}
+
+// WriteJSONFile marshalls and writes the given data to a JSON file
+func WriteJSONFile(v interface{}, dir, file string) (string, error) {
+	fileJSON, err := json.MarshalIndent(v, "", "  ")
+	if err != nil {
+		return "", errors.Wrapf(err, "Error marshalling JSON")
+	}
+	file = filepath.Join(dir, file)
+	if err := ioutil.WriteFile(file, fileJSON, 0o600); err != nil {
+		return "", errors.Wrapf(err, "Error writing to %q", file)
+	}
+
+	return file, nil
+}
+
+func ReadJSONFile(v interface{}, dir, file string) (string, error) {
+	file = filepath.Join(dir, file)
+	content, err := ioutil.ReadFile(file)
+	if err != nil {
+		return "", errors.Wrapf(err, "failed to read %s", file)
+	}
+	if err = json.Unmarshal(content, v); err != nil {
+		return "", errors.Wrapf(err, "failed to unmarshal %s", file)
+	}
+
+	return file, nil
+}
+
+func WriteKubeletCheckpointsMetadata(checkpointMetadata *CheckpointMetadata, dir string) error {
+	_, err := WriteJSONFile(checkpointMetadata, dir, CheckpointedPodsFile)
+
+	return err
+}
+
+func ByteToString(b int64) string {
+	const unit = 1024
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+
+	return fmt.Sprintf("%.1f %ciB",
+		float64(b)/float64(div), "KMGTPE"[exp])
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 5e2139c9f..1d192693d 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -40,6 +40,8 @@ github.com/beorn7/perks/quantile
 github.com/blang/semver
 # github.com/buger/goterm v0.0.0-20181115115552-c206103e1f37
 github.com/buger/goterm
+# github.com/checkpoint-restore/checkpointctl v0.0.0-20210301084134-a2024f5584e7
+github.com/checkpoint-restore/checkpointctl/lib
 # github.com/checkpoint-restore/go-criu v0.0.0-20190109184317-bdb7599cd87b
 github.com/checkpoint-restore/go-criu
 github.com/checkpoint-restore/go-criu/rpc