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info.go
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info.go
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package release
import (
"archive/tar"
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"os"
"path"
"sort"
"strconv"
"strings"
"sync"
"text/tabwriter"
"time"
"github.com/MakeNowJust/heredoc"
"github.com/blang/semver"
"github.com/docker/distribution"
units "github.com/docker/go-units"
digest "github.com/opencontainers/go-digest"
"github.com/spf13/cobra"
"k8s.io/klog"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/duration"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/cli-runtime/pkg/genericclioptions"
kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/pkg/kubectl/util/templates"
imageapi "github.com/openshift/api/image/v1"
configv1client "github.com/openshift/client-go/config/clientset/versioned"
"github.com/openshift/origin/pkg/image/apis/image/docker10"
imagereference "github.com/openshift/origin/pkg/image/apis/image/reference"
"github.com/openshift/origin/pkg/oc/cli/image/extract"
imageinfo "github.com/openshift/origin/pkg/oc/cli/image/info"
imagemanifest "github.com/openshift/origin/pkg/oc/cli/image/manifest"
)
func NewInfoOptions(streams genericclioptions.IOStreams) *InfoOptions {
return &InfoOptions{
IOStreams: streams,
ParallelOptions: imagemanifest.ParallelOptions{MaxPerRegistry: 4},
}
}
func NewInfo(f kcmdutil.Factory, parentName string, streams genericclioptions.IOStreams) *cobra.Command {
o := NewInfoOptions(streams)
cmd := &cobra.Command{
Use: "info IMAGE [--changes-from=IMAGE] [--verify|--commits|--pullspecs]",
Short: "Display information about a release",
Long: templates.LongDesc(`
Show information about an OpenShift release
This command retrieves, verifies, and formats the information describing an OpenShift update.
Updates are delivered as container images with metadata describing the component images and
the configuration necessary to install the system operators. A release image is usually
referenced via its content digest, which allows this command and the update infrastructure to
validate that updates have not been tampered with.
If no arguments are specified the release of the currently connected cluster is displayed.
Specify one or more images via pull spec to see details of each release image. The --commits
flag will display the Git commit IDs and repository URLs for the source of each component
image. The --pullspecs flag will display the full component image pull spec. --size will show
a breakdown of each image, their layers, and the total size of the payload. --contents shows
the configuration that will be applied to the cluster when the update is run. If you have
specified two images the difference between the first and second image will be shown.
The --verify flag will display one summary line per input release image and verify the
integrity of each. The command will return an error if the release has been tampered with.
Passing a pull spec with a digest (e.g. quay.io/openshift/release@sha256:a9bc...) instead of
a tag when verifying an image is recommended since it ensures an attacker cannot trick you
into installing an older, potentially vulnerable version.
The --bugs and --changelog flags will use git to clone the source of the release and display
the code changes that occurred between the two release arguments. This operation is slow
and requires sufficient disk space on the selected drive to clone all repositories.
`),
Run: func(cmd *cobra.Command, args []string) {
kcmdutil.CheckErr(o.Complete(f, cmd, args))
kcmdutil.CheckErr(o.Validate())
kcmdutil.CheckErr(o.Run())
},
}
flags := cmd.Flags()
o.SecurityOptions.Bind(flags)
o.ParallelOptions.Bind(flags)
flags.StringVar(&o.From, "changes-from", o.From, "Show changes from this image to the requested image.")
flags.BoolVar(&o.Verify, "verify", o.Verify, "Generate bug listings from the changelogs in the git repositories extracted to this path.")
flags.BoolVar(&o.ShowContents, "contents", o.ShowContents, "Display the contents of a release.")
flags.BoolVar(&o.ShowCommit, "commits", o.ShowCommit, "Display information about the source an image was created with.")
flags.BoolVar(&o.ShowPullSpec, "pullspecs", o.ShowPullSpec, "Display the pull spec of each image instead of the digest.")
flags.BoolVar(&o.ShowSize, "size", o.ShowSize, "Display the size of each image including overlap.")
flags.StringVar(&o.ImageFor, "image-for", o.ImageFor, "Print the pull spec of the specified image or an error if it does not exist.")
flags.StringVarP(&o.Output, "output", "o", o.Output, "Display the release info in an alternative format: json")
flags.StringVar(&o.ChangelogDir, "changelog", o.ChangelogDir, "Generate changelog output from the git directories extracted to this path.")
flags.StringVar(&o.BugsDir, "bugs", o.BugsDir, "Generate bug listings from the changelogs in the git repositories extracted to this path.")
flags.BoolVar(&o.IncludeImages, "include-images", o.IncludeImages, "When displaying JSON output of a release output the images the release references.")
return cmd
}
type InfoOptions struct {
genericclioptions.IOStreams
Images []string
From string
Output string
ImageFor string
IncludeImages bool
ShowContents bool
ShowCommit bool
ShowPullSpec bool
ShowSize bool
Verify bool
ChangelogDir string
BugsDir string
ParallelOptions imagemanifest.ParallelOptions
SecurityOptions imagemanifest.SecurityOptions
}
func (o *InfoOptions) Complete(f kcmdutil.Factory, cmd *cobra.Command, args []string) error {
if len(args) == 0 {
cfg, err := f.ToRESTConfig()
if err != nil {
return fmt.Errorf("info expects one argument, or a connection to an OpenShift 4.x server: %v", err)
}
client, err := configv1client.NewForConfig(cfg)
if err != nil {
return fmt.Errorf("info expects one argument, or a connection to an OpenShift 4.x server: %v", err)
}
cv, err := client.ConfigV1().ClusterVersions().Get("version", metav1.GetOptions{})
if err != nil {
if errors.IsNotFound(err) {
return fmt.Errorf("you must be connected to an OpenShift 4.x server to fetch the current version")
}
return fmt.Errorf("info expects one argument, or a connection to an OpenShift 4.x server: %v", err)
}
image := cv.Status.Desired.Image
if len(image) == 0 && cv.Spec.DesiredUpdate != nil {
image = cv.Spec.DesiredUpdate.Image
}
if len(image) == 0 {
return fmt.Errorf("the server is not reporting a release image at this time, please specify an image to view")
}
args = []string{image}
}
if len(args) < 1 {
return fmt.Errorf("info expects at least one argument, a release image pull spec")
}
o.Images = args
if len(o.From) == 0 && len(o.Images) == 2 && !o.Verify {
o.From = o.Images[0]
o.Images = o.Images[1:]
}
return nil
}
func (o *InfoOptions) Validate() error {
count := 0
if len(o.ImageFor) > 0 {
count++
}
if o.ShowCommit {
count++
}
if o.ShowPullSpec {
count++
}
if o.ShowContents {
count++
}
if o.ShowSize {
count++
}
if o.Verify {
count++
}
if count > 1 {
return fmt.Errorf("only one of --commits, --pullspecs, --contents, --size, --verify may be specified")
}
if len(o.ImageFor) > 0 && len(o.Output) > 0 {
return fmt.Errorf("--output and --image-for may not both be specified")
}
if len(o.ChangelogDir) > 0 || len(o.BugsDir) > 0 {
if len(o.From) == 0 {
return fmt.Errorf("--changelog/--bugs require --from")
}
}
if len(o.ChangelogDir) > 0 && len(o.BugsDir) > 0 {
return fmt.Errorf("--changelog and --bugs may not both be specified")
}
switch {
case len(o.BugsDir) > 0:
switch o.Output {
case "", "name":
default:
return fmt.Errorf("--output only supports 'name' for --bugs")
}
case len(o.ChangelogDir) > 0:
if len(o.Output) > 0 {
return fmt.Errorf("--output is not supported for this mode")
}
default:
switch o.Output {
case "", "json":
default:
return fmt.Errorf("--output only supports 'json'")
}
}
if len(o.Images) == 0 {
return fmt.Errorf("must specify a release image as an argument")
}
if len(o.From) > 0 && len(o.Images) != 1 {
return fmt.Errorf("must specify a single release image as argument when comparing to another release image")
}
return nil
}
func (o *InfoOptions) Run() error {
fetchImages := o.ShowSize || o.Verify || o.IncludeImages
if len(o.From) > 0 && !o.Verify {
if o.ShowContents {
return diffContents(o.From, o.Images[0], o.Out)
}
var baseRelease *ReleaseInfo
var baseErr error
done := make(chan struct{})
go func() {
defer close(done)
baseRelease, baseErr = o.LoadReleaseInfo(o.From, fetchImages)
}()
release, err := o.LoadReleaseInfo(o.Images[0], fetchImages)
if err != nil {
return err
}
<-done
if baseErr != nil {
return baseErr
}
diff, err := calculateDiff(baseRelease, release)
if err != nil {
return err
}
if len(o.BugsDir) > 0 {
return describeBugs(o.Out, o.ErrOut, diff, o.BugsDir, o.Output)
}
if len(o.ChangelogDir) > 0 {
return describeChangelog(o.Out, o.ErrOut, diff, o.ChangelogDir)
}
return describeReleaseDiff(o.Out, diff, o.ShowCommit, o.Output)
}
var exitErr error
for _, image := range o.Images {
release, err := o.LoadReleaseInfo(image, fetchImages)
if err != nil {
exitErr = kcmdutil.ErrExit
fmt.Fprintf(o.ErrOut, "error: %v\n", err)
continue
}
if o.Verify {
fmt.Fprintf(o.Out, "%s %s %s\n", release.Digest, release.References.CreationTimestamp.UTC().Format(time.RFC3339), release.PreferredName())
continue
}
if err := o.describeImage(release); err != nil {
exitErr = kcmdutil.ErrExit
fmt.Fprintf(o.ErrOut, "error: %v\n", err)
continue
}
}
return exitErr
}
func diffContents(a, b string, out io.Writer) error {
fmt.Fprintf(out, `To see the differences between these releases, run:
%[1]s adm release extract %[2]s --to=/tmp/old
%[1]s adm release extract %[3]s --to=/tmp/new
diff /tmp/old /tmp/new
`, os.Args[0], a, b)
return nil
}
func (o *InfoOptions) describeImage(release *ReleaseInfo) error {
if o.ShowContents {
_, err := io.Copy(o.Out, newContentStreamForRelease(release))
return err
}
if len(o.Output) > 0 {
data, err := json.MarshalIndent(release, "", " ")
if err != nil {
return err
}
fmt.Fprintln(o.Out, string(data))
return nil
}
if len(o.ImageFor) > 0 {
spec, err := findImageSpec(release.References, o.ImageFor, release.Image)
if err != nil {
return err
}
fmt.Fprintln(o.Out, spec)
return nil
}
return describeReleaseInfo(o.Out, release, o.ShowCommit, o.ShowPullSpec, o.ShowSize)
}
func findImageSpec(image *imageapi.ImageStream, tagName, imageName string) (string, error) {
for _, tag := range image.Spec.Tags {
if tag.Name == tagName {
if tag.From != nil && tag.From.Kind == "DockerImage" && len(tag.From.Name) > 0 {
return tag.From.Name, nil
}
}
}
return "", fmt.Errorf("no image tag %q exists in the release image %s", tagName, imageName)
}
func calculateDiff(from, to *ReleaseInfo) (*ReleaseDiff, error) {
diff := &ReleaseDiff{
From: from,
To: to,
ChangedImages: make(map[string]*ImageReferenceDiff),
ChangedManifests: make(map[string]*ReleaseManifestDiff),
}
for i := range from.References.Spec.Tags {
tag := &from.References.Spec.Tags[i]
if tag.From == nil || tag.From.Kind != "DockerImage" {
continue
}
diff.ChangedImages[tag.Name] = &ImageReferenceDiff{
Name: tag.Name,
From: tag,
}
}
for i := range to.References.Spec.Tags {
tag := &to.References.Spec.Tags[i]
if tag.From == nil || tag.From.Kind != "DockerImage" {
continue
}
if exists, ok := diff.ChangedImages[tag.Name]; ok {
exists.To = tag
continue
}
diff.ChangedImages[tag.Name] = &ImageReferenceDiff{
Name: tag.Name,
To: tag,
}
}
for k, v := range diff.ChangedImages {
if v.From != nil && v.To != nil && v.From.From.Name == v.To.From.Name {
delete(diff.ChangedImages, k)
}
}
for name, manifest := range from.ManifestFiles {
diff.ChangedManifests[name] = &ReleaseManifestDiff{
Filename: name,
From: manifest,
}
}
for name, manifest := range to.ManifestFiles {
if exists, ok := diff.ChangedManifests[name]; ok {
exists.To = manifest
continue
}
diff.ChangedManifests[name] = &ReleaseManifestDiff{
Filename: name,
From: manifest,
}
}
for k, v := range diff.ChangedManifests {
if bytes.Equal(v.From, v.To) {
delete(diff.ChangedManifests, k)
}
}
return diff, nil
}
type ReleaseDiff struct {
From *ReleaseInfo `json:"from"`
To *ReleaseInfo `json:"to"`
ChangedImages map[string]*ImageReferenceDiff `json:"changedImages"`
ChangedManifests map[string]*ReleaseManifestDiff `json:"changedManifests"`
}
type ImageReferenceDiff struct {
Name string `json:"name"`
From *imageapi.TagReference `json:"from"`
To *imageapi.TagReference `json:"to"`
}
type ReleaseManifestDiff struct {
Filename string `json:"filename"`
From []byte `json:"from"`
To []byte `json:"to"`
}
type ReleaseInfo struct {
Image string `json:"image"`
ImageRef imagereference.DockerImageReference `json:"-"`
Digest digest.Digest `json:"digest"`
ContentDigest digest.Digest `json:"contentDigest"`
// TODO: return the list digest in the future
// ListDigest digest.Digest `json:"listDigest"`
Config *docker10.DockerImageConfig `json:"config"`
Metadata *CincinnatiMetadata `json:"metadata"`
References *imageapi.ImageStream `json:"references"`
ComponentVersions map[string]string `json:"versions"`
Images map[string]*Image `json:"images"`
RawMetadata map[string][]byte `json:"-"`
ManifestFiles map[string][]byte `json:"-"`
UnknownFiles []string `json:"-"`
Warnings []string `json:"warnings"`
}
type Image struct {
Name string `json:"name"`
Ref imagereference.DockerImageReference `json:"-"`
Digest digest.Digest `json:"digest"`
ContentDigest digest.Digest `json:"contentDigest"`
ListDigest digest.Digest `json:"listDigest"`
MediaType string `json:"mediaType"`
Layers []distribution.Descriptor `json:"layers"`
Config *docker10.DockerImageConfig `json:"config"`
Manifest distribution.Manifest `json:"-"`
}
func (i *ReleaseInfo) PreferredName() string {
if i.Metadata != nil {
return i.Metadata.Version
}
return i.References.Name
}
func (i *ReleaseInfo) Platform() string {
os := i.Config.OS
if len(os) > 0 {
os = "unknown"
}
arch := i.Config.Architecture
if len(arch) == 0 {
arch = "unknown"
}
return fmt.Sprintf("%s/%s", os, arch)
}
func (o *InfoOptions) LoadReleaseInfo(image string, retrieveImages bool) (*ReleaseInfo, error) {
ref, err := imagereference.Parse(image)
if err != nil {
return nil, err
}
verifier := imagemanifest.NewVerifier()
opts := extract.NewOptions(genericclioptions.IOStreams{Out: o.Out, ErrOut: o.ErrOut})
opts.SecurityOptions = o.SecurityOptions
release := &ReleaseInfo{
Image: image,
ImageRef: ref,
RawMetadata: make(map[string][]byte),
}
opts.ImageMetadataCallback = func(m *extract.Mapping, dgst, contentDigest digest.Digest, config *docker10.DockerImageConfig) {
verifier.Verify(dgst, contentDigest)
release.Digest = dgst
release.ContentDigest = contentDigest
release.Config = config
}
opts.OnlyFiles = true
opts.Mappings = []extract.Mapping{
{
ImageRef: ref,
From: "release-manifests/",
To: ".",
LayerFilter: extract.NewPositionLayerFilter(-1),
},
}
var errs []error
opts.TarEntryCallback = func(hdr *tar.Header, _ extract.LayerInfo, r io.Reader) (bool, error) {
switch hdr.Name {
case "image-references":
data, err := ioutil.ReadAll(r)
if err != nil {
errs = append(errs, fmt.Errorf("unable to read release image-references: %v", err))
return true, nil
}
release.RawMetadata[hdr.Name] = data
is, err := readReleaseImageReferences(data)
if err != nil {
errs = append(errs, err)
return true, nil
}
release.References = is
case "release-metadata":
data, err := ioutil.ReadAll(r)
if err != nil {
errs = append(errs, fmt.Errorf("unable to read release metadata: %v", err))
return true, nil
}
release.RawMetadata[hdr.Name] = data
m := &CincinnatiMetadata{}
if err := json.Unmarshal(data, m); err != nil {
errs = append(errs, fmt.Errorf("invalid release metadata: %v", err))
return true, nil
}
release.Metadata = m
default:
if ext := path.Ext(hdr.Name); len(ext) > 0 && (ext == ".yaml" || ext == ".yml" || ext == ".json") {
klog.V(4).Infof("Found manifest %s", hdr.Name)
data, err := ioutil.ReadAll(r)
if err != nil {
errs = append(errs, fmt.Errorf("unable to read release manifest %q: %v", hdr.Name, err))
return true, nil
}
if release.ManifestFiles == nil {
release.ManifestFiles = make(map[string][]byte)
}
release.ManifestFiles[hdr.Name] = data
} else {
release.UnknownFiles = append(release.UnknownFiles, hdr.Name)
}
}
return true, nil
}
if err := opts.Run(); err != nil {
return nil, err
}
if len(errs) > 0 {
return nil, fmt.Errorf("release image could not be read: %s", errorList(errs))
}
if release.References == nil {
return nil, fmt.Errorf("release image did not contain an image-references file")
}
release.ComponentVersions, errs = readComponentVersions(release.References)
for _, err := range errs {
release.Warnings = append(release.Warnings, err.Error())
}
if retrieveImages {
var lock sync.Mutex
release.Images = make(map[string]*Image)
r := &imageinfo.ImageRetriever{
Image: make(map[string]imagereference.DockerImageReference),
SecurityOptions: o.SecurityOptions,
ParallelOptions: o.ParallelOptions,
ImageMetadataCallback: func(name string, image *imageinfo.Image, err error) error {
if image != nil {
verifier.Verify(image.Digest, image.ContentDigest)
}
lock.Lock()
defer lock.Unlock()
if err != nil {
release.Warnings = append(release.Warnings, fmt.Sprintf("tag %q: %v", name, err))
return nil
}
copied := Image(*image)
release.Images[name] = &copied
return nil
},
}
for _, tag := range release.References.Spec.Tags {
if tag.From == nil || tag.From.Kind != "DockerImage" {
continue
}
ref, err := imagereference.Parse(tag.From.Name)
if err != nil {
release.Warnings = append(release.Warnings, fmt.Sprintf("tag %q has an invalid reference: %v", tag.Name, err))
continue
}
r.Image[tag.Name] = ref
}
if err := r.Run(); err != nil {
return nil, err
}
}
if !verifier.Verified() {
err := fmt.Errorf("the release image failed content verification and may have been tampered with")
if !o.SecurityOptions.SkipVerification {
return nil, err
}
fmt.Fprintf(o.ErrOut, "warning: %v\n", err)
}
sort.Strings(release.Warnings)
return release, nil
}
func readComponentVersions(is *imageapi.ImageStream) (map[string]string, []error) {
var errs []error
combined := make(map[string]sets.String)
for _, tag := range is.Spec.Tags {
versions, ok := tag.Annotations[annotationBuildVersions]
if !ok {
continue
}
all, err := parseComponentVersionsLabel(versions)
if err != nil {
errs = append(errs, fmt.Errorf("the referenced image %s had an invalid version annotation: %v", tag.Name, err))
}
for k, v := range all {
existing, ok := combined[k]
if !ok {
existing = sets.NewString()
combined[k] = existing
}
existing.Insert(v)
}
}
out := make(map[string]string)
var multiples []string
for k, v := range combined {
if v.Len() > 1 {
multiples = append(multiples, k)
}
out[k], _ = v.PopAny()
}
if len(multiples) > 0 {
sort.Strings(multiples)
errs = append(errs, fmt.Errorf("multiple versions reported for the following component(s): %v", strings.Join(multiples, ", ")))
}
return out, errs
}
func errorList(errs []error) string {
if len(errs) == 1 {
return errs[0].Error()
}
buf := &bytes.Buffer{}
fmt.Fprintf(buf, "\n\n")
for _, err := range errs {
fmt.Fprintf(buf, "* %v\n", err)
}
return buf.String()
}
func stringArrContains(arr []string, s string) bool {
for _, item := range arr {
if item == s {
return true
}
}
return false
}
func describeReleaseDiff(out io.Writer, diff *ReleaseDiff, showCommit bool, outputMode string) error {
switch outputMode {
case "json":
data, err := json.MarshalIndent(diff, "", " ")
if err != nil {
return err
}
fmt.Fprintln(out, string(data))
return nil
case "":
// print human readable output
default:
return fmt.Errorf("unrecognized output mode: %s", outputMode)
}
if diff.To.Digest == diff.From.Digest {
fmt.Fprintf(out, "Releases are identical\n")
return nil
}
w := tabwriter.NewWriter(out, 0, 4, 2, ' ', 0)
defer w.Flush()
now := time.Now()
fmt.Fprintf(w, "\tFROM\tTO\n")
fmt.Fprintf(w, "Name:\t%s\t%s\n", diff.From.PreferredName(), diff.To.PreferredName())
fmt.Fprintf(w, "Created:\t%s\t%s\n", duration.ShortHumanDuration(now.Sub(diff.From.Config.Created)), duration.ShortHumanDuration(now.Sub(diff.To.Config.Created)))
if from, to := diff.From.Platform(), diff.To.Platform(); from != to {
fmt.Fprintf(w, "OS/Arch:\t%s\t%s\n", from, to)
}
switch {
case diff.From.Metadata != nil && diff.To.Metadata != nil:
fmt.Fprintln(w)
fmt.Fprintf(w, "Version:\t%s\t%s\n", diff.From.Metadata.Version, diff.To.Metadata.Version)
canUpgrade := "No"
if stringArrContains(diff.To.Metadata.Previous, diff.From.Metadata.Version) {
canUpgrade = "Yes"
}
fmt.Fprintf(w, "Upgrade From:\t\t%s\n", canUpgrade)
case diff.From.Metadata != nil && diff.To.Metadata == nil:
fmt.Fprintf(w, "Has Release Metadata:\tYes\t\n")
case diff.From.Metadata == nil && diff.To.Metadata != nil:
fmt.Fprintf(w, "Has Release Metadata:\t\tYes\n")
}
if len(diff.ChangedImages) > 0 {
var keys []string
maxLen := 0
for k := range diff.ChangedImages {
if len(k) > maxLen {
maxLen = len(k)
}
keys = append(keys, k)
}
justify := func(s string) string {
return s + strings.Repeat(" ", maxLen-len(s))
}
sort.Strings(keys)
var rebuilt []string
writeTabSection(w, func(w io.Writer) {
count := 0
for _, k := range keys {
if image := diff.ChangedImages[k]; image.To != nil && image.From != nil {
if !codeChanged(image.From, image.To) {
rebuilt = append(rebuilt, k)
continue
}
if count == 0 {
fmt.Fprintln(w)
fmt.Fprintf(w, "Images Changed:\n")
}
count++
old, new := digestOrRef(image.From.From.Name), digestOrRef(image.To.From.Name)
if old != new {
if showCommit {
fmt.Fprintf(w, " %s\t%s\n", justify(image.Name), gitDiffOrCommit(image.From, image.To))
} else {
fmt.Fprintf(w, " %s\t%s\t%s\n", justify(image.Name), old, new)
}
}
}
}
})
if len(rebuilt) > 0 {
writeTabSection(w, func(w io.Writer) {
count := 0
for _, k := range rebuilt {
if image := diff.ChangedImages[k]; image.To != nil && image.From != nil {
if count == 0 {
fmt.Fprintln(w)
fmt.Fprintf(w, "Images Rebuilt:\n")
}
count++
old, new := digestOrRef(image.From.From.Name), digestOrRef(image.To.From.Name)
if old != new {
if showCommit {
fmt.Fprintf(w, " %s\t%s\n", justify(image.Name), gitDiffOrCommit(image.From, image.To))
} else {
fmt.Fprintf(w, " %s\t%s\t%s\n", justify(image.Name), old, new)
}
}
}
}
})
}
writeTabSection(w, func(w io.Writer) {
count := 0
for _, k := range keys {
if image := diff.ChangedImages[k]; image.From == nil {
if count == 0 {
fmt.Fprintln(w)
fmt.Fprintf(w, "Images Added:\n")
}
count++
if showCommit {
fmt.Fprintf(w, " %s\t%s\n", justify(image.Name), repoAndCommit(image.To))
} else {
fmt.Fprintf(w, " %s\t%s\n", justify(image.Name), digestOrRef(image.To.From.Name))
}
}
}
})
writeTabSection(w, func(w io.Writer) {
count := 0
for _, k := range keys {
if image := diff.ChangedImages[k]; image.To == nil {
if count == 0 {
fmt.Fprintln(w)
fmt.Fprintf(w, "Images Removed:\n")
}
count++
fmt.Fprintf(w, " %s\n", justify(image.Name))
}
}
})
}
fmt.Fprintln(w)
return nil
}
func repoAndCommit(ref *imageapi.TagReference) string {
repo := ref.Annotations[annotationBuildSourceLocation]
commit := ref.Annotations[annotationBuildSourceCommit]
if len(repo) == 0 || len(commit) == 0 {
return "<unknown>"
}
return urlForRepoAndCommit(repo, commit)
}
func gitDiffOrCommit(from, to *imageapi.TagReference) string {
oldRepo, newRepo := from.Annotations[annotationBuildSourceLocation], to.Annotations[annotationBuildSourceLocation]
oldCommit, newCommit := from.Annotations[annotationBuildSourceCommit], to.Annotations[annotationBuildSourceCommit]
if len(newRepo) == 0 || len(newCommit) == 0 {
return "<unknown>"
}
if oldRepo == newRepo {
if oldCommit == newCommit {
return urlForRepoAndCommit(newRepo, newCommit)
}
return urlForRepoAndCommitRange(newRepo, oldCommit, newCommit)
}
if len(oldCommit) == 0 {
return fmt.Sprintf("%s <unknown> -> %s", oldRepo, urlForRepoAndCommit(newRepo, newCommit))
}
if oldCommit == newCommit {
return fmt.Sprintf("%s -> %s", oldRepo, urlForRepoAndCommit(newRepo, newCommit))
}
return fmt.Sprintf("%s -> %s", urlForRepoAndCommit(oldRepo, oldCommit), urlForRepoAndCommit(newRepo, newCommit))
}
func urlForRepoAndCommit(repo, commit string) string {
if strings.HasPrefix(repo, urlGithubPrefix) {
if u, err := url.Parse(repo); err == nil {
u.Path = path.Join(u.Path, "commit", fmt.Sprintf("%s", commit))
return u.String()
}
}
return fmt.Sprintf("%s %s", repo, commit)
}
func urlForRepoAndCommitRange(repo, from, to string) string {
if strings.HasPrefix(repo, urlGithubPrefix) {
if u, err := url.Parse(repo); err == nil {
u.Path = path.Join(u.Path, "compare", fmt.Sprintf("%s...%s", from, to))
return u.String()
}
}
return fmt.Sprintf("%s %s %s", repo, from, to)
}
func codeChanged(from, to *imageapi.TagReference) bool {
oldCommit, newCommit := from.Annotations[annotationBuildSourceCommit], to.Annotations[annotationBuildSourceCommit]
return len(oldCommit) > 0 && len(newCommit) > 0 && oldCommit != newCommit
}
func describeReleaseInfo(out io.Writer, release *ReleaseInfo, showCommit, pullSpec, showSize bool) error {
w := tabwriter.NewWriter(out, 0, 4, 1, ' ', 0)
defer w.Flush()
now := time.Now()
fmt.Fprintf(w, "Name:\t%s\n", release.PreferredName())
fmt.Fprintf(w, "Digest:\t%s\n", release.Digest)
fmt.Fprintf(w, "Created:\t%s\n", release.Config.Created.UTC().Truncate(time.Second).Format(time.RFC3339))
fmt.Fprintf(w, "OS/Arch:\t%s/%s\n", release.Config.OS, release.Config.Architecture)
fmt.Fprintf(w, "Manifests:\t%d\n", len(release.ManifestFiles))
if len(release.UnknownFiles) > 0 {
fmt.Fprintf(w, "Unknown files:\t%d\n", len(release.UnknownFiles))
}
fmt.Fprintln(w)
refExact := release.ImageRef
refExact.Tag = ""
refExact.ID = release.Digest.String()
fmt.Fprintf(w, "Pull From:\t%s\n", refExact.String())
if m := release.Metadata; m != nil {
fmt.Fprintln(w)
fmt.Fprintf(w, "Release Metadata:\n")
fmt.Fprintf(w, " Version:\t%s\n", m.Version)
if len(m.Previous) > 0 {
fmt.Fprintf(w, " Upgrades:\t%s\n", strings.Join(sortSemanticVersions(m.Previous), ", "))
} else {
fmt.Fprintf(w, " Upgrades:\t<none>\n")
}
var keys []string
for k := range m.Metadata {
keys = append(keys, k)
}
sort.Strings(keys)
writeTabSection(w, func(w io.Writer) {
for _, k := range keys {
fmt.Fprintf(w, " Metadata:\n")
fmt.Fprintf(w, " %s:\t%s\n", k, m.Metadata[k])
}
})
}
if len(release.ComponentVersions) > 0 {
fmt.Fprintln(w)
fmt.Fprintf(w, "Component Versions:\n")
keys := orderedKeys(release.ComponentVersions)
for _, key := range keys {
fmt.Fprintf(w, " %s\t%s\n", componentName(key), release.ComponentVersions[key])
}
}
writeTabSection(w, func(w io.Writer) {
fmt.Fprintln(w)
fmt.Fprintf(w, "Images:\n")
switch {
case showSize:
layerCount := make(map[string]int)
baseLayer := make(map[string]int)
totalSize := int64(0)
for _, image := range release.Images {
for i, layer := range image.Layers {
digest := layer.Digest.String()
if i == 0 {
baseLayer[digest] = 0
}
count := layerCount[digest]
if count == 0 {
totalSize += layer.Size
}
layerCount[digest] = count + 1
}
}
var baseHeader string
if len(baseLayer) > 1 {
baseHeader = "BASE"
}
fmt.Fprintf(w, " NAME\t AGE\t LAYERS\t SIZE MB\t UNIQUE MB\t %s\n", baseHeader)
coveredLayer := make(map[string]struct{})
currentBase := 1
for _, tag := range release.References.Spec.Tags {
if tag.From == nil || tag.From.Kind != "DockerImage" {
continue
}
image, ok := release.Images[tag.Name]
if !ok {
fmt.Fprintf(w, " %s\t\t\t\t\t\n", tag.Name)
continue
}
// create a column for a small number of unique base layers that visually indicates
// which base layer belongs to which image
var base string
if len(baseLayer) > 1 {
if baseIndex, ok := baseLayer[image.Layers[0].Digest.String()]; ok {
if baseIndex == 0 {
baseLayer[image.Layers[0].Digest.String()] = currentBase
baseIndex = currentBase
currentBase++
}
if len(baseLayer) <= 5 {
base = strings.Repeat(" ", baseIndex-1) + string(rune('A'+baseIndex-1))
} else {
base = strconv.Itoa(baseIndex)
}
}
}
// count the size of the image and the unique size of the image, to give a better
// idea of which images impact the payload the most
unshared := int64(0)
size := int64(0)
for _, layer := range image.Layers {
size += layer.Size
if layerCount[layer.Digest.String()] > 1 {
continue
}
unshared += layer.Size
}
// if this image has no unique layers, find the top-most layer and if this is the
// first time it has been shown print the top layer size (as a reasonable proxy
// for how much this image in particular contributes)
if unshared == 0 {
top := image.Layers[len(image.Layers)-1]
if _, ok := coveredLayer[top.Digest.String()]; !ok {
unshared = top.Size
coveredLayer[top.Digest.String()] = struct{}{}