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importer.go
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importer.go
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package importer
import (
"fmt"
"net/url"
"runtime"
"strings"
"github.com/golang/glog"
gocontext "golang.org/x/net/context"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest/manifestlist"
"github.com/docker/distribution/manifest/schema1"
"github.com/docker/distribution/manifest/schema2"
"github.com/docker/distribution/reference"
"github.com/docker/distribution/registry/api/errcode"
"github.com/docker/distribution/registry/api/v2"
godigest "github.com/opencontainers/go-digest"
kapierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/client-go/util/flowcontrol"
"github.com/openshift/api/image"
"github.com/openshift/origin/pkg/api/legacy"
imageapi "github.com/openshift/origin/pkg/image/apis/image"
"github.com/openshift/origin/pkg/image/importer/dockerv1client"
"github.com/openshift/origin/pkg/image/util"
)
// Add a dockerregistry.Client to the passed context with this key to support v1 Docker registry importing
const ContextKeyV1RegistryClient = "v1-registry-client"
// Interface loads images into an image stream import request.
type Interface interface {
Import(ctx gocontext.Context, isi *imageapi.ImageStreamImport, stream *imageapi.ImageStream) error
}
// RepositoryRetriever fetches a Docker distribution.Repository.
type RepositoryRetriever interface {
// Repository returns a properly authenticated distribution.Repository for the given registry, repository
// name, and insecure toleration behavior.
Repository(ctx gocontext.Context, registry *url.URL, repoName string, insecure bool) (distribution.Repository, error)
}
// ImageStreamImport implements an import strategy for Docker images. It keeps a cache of images
// per distinct auth context to reduce duplicate loads. This type is not thread safe.
type ImageStreamImporter struct {
maximumTagsPerRepo int
retriever RepositoryRetriever
limiter flowcontrol.RateLimiter
digestToRepositoryCache map[gocontext.Context]map[manifestKey]*imageapi.Image
// digestToLayerSizeCache maps layer digests to size.
digestToLayerSizeCache *ImageStreamLayerCache
}
// NewImageStreamImport creates an importer that will load images from a remote Docker registry into an
// ImageStreamImport object. Limiter may be nil.
func NewImageStreamImporter(retriever RepositoryRetriever, maximumTagsPerRepo int, limiter flowcontrol.RateLimiter, cache *ImageStreamLayerCache) *ImageStreamImporter {
if limiter == nil {
limiter = flowcontrol.NewFakeAlwaysRateLimiter()
}
if cache == nil {
glog.V(5).Infof("the global layer cache is disabled")
}
return &ImageStreamImporter{
maximumTagsPerRepo: maximumTagsPerRepo,
retriever: retriever,
limiter: limiter,
digestToRepositoryCache: make(map[gocontext.Context]map[manifestKey]*imageapi.Image),
digestToLayerSizeCache: cache,
}
}
// Import tries to complete the provided isi object with images loaded from remote registries.
func (i *ImageStreamImporter) Import(ctx gocontext.Context, isi *imageapi.ImageStreamImport, stream *imageapi.ImageStream) error {
// Initialize layer size cache if not given.
if i.digestToLayerSizeCache == nil {
cache, err := NewImageStreamLayerCache(DefaultImageStreamLayerCacheSize)
if err != nil {
return err
}
i.digestToLayerSizeCache = &cache
}
// Initialize the image cache entry for a context.
if _, ok := i.digestToRepositoryCache[ctx]; !ok {
i.digestToRepositoryCache[ctx] = make(map[manifestKey]*imageapi.Image)
}
i.importImages(ctx, i.retriever, isi, stream, i.limiter)
i.importFromRepository(ctx, i.retriever, isi, i.maximumTagsPerRepo, i.limiter)
return nil
}
// importImages updates the passed ImageStreamImport object and sets Status for each image based on whether the import
// succeeded or failed. Cache is updated with any loaded images. Limiter is optional and controls how fast images are updated.
func (i *ImageStreamImporter) importImages(ctx gocontext.Context, retriever RepositoryRetriever, isi *imageapi.ImageStreamImport, stream *imageapi.ImageStream, limiter flowcontrol.RateLimiter) {
tags := make(map[manifestKey][]int)
ids := make(map[manifestKey][]int)
repositories := make(map[repositoryKey]*importRepository)
cache := i.digestToRepositoryCache[ctx]
isi.Status.Images = make([]imageapi.ImageImportStatus, len(isi.Spec.Images))
for i := range isi.Spec.Images {
spec := &isi.Spec.Images[i]
from := spec.From
if from.Kind != "DockerImage" {
continue
}
// TODO: This should be removed in 1.6
// See for more info: https://github.com/openshift/origin/pull/11774#issuecomment-258905994
var (
err error
ref imageapi.DockerImageReference
)
if from.Name != "*" {
ref, err = imageapi.ParseDockerImageReference(from.Name)
if err != nil {
isi.Status.Images[i].Status = invalidStatus("", field.Invalid(field.NewPath("from", "name"), from.Name, fmt.Sprintf("invalid name: %v", err)))
continue
}
} else {
ref = imageapi.DockerImageReference{Name: from.Name}
}
defaultRef := ref.DockerClientDefaults()
repoName := defaultRef.RepositoryName()
registryURL := defaultRef.RegistryURL()
key := repositoryKey{url: *registryURL, name: repoName}
repo, ok := repositories[key]
if !ok {
repo = &importRepository{
Ref: ref,
Registry: &key.url,
Name: key.name,
Insecure: spec.ImportPolicy.Insecure,
}
repositories[key] = repo
}
if len(defaultRef.ID) > 0 {
id := manifestKey{repositoryKey: key}
id.value = defaultRef.ID
ids[id] = append(ids[id], i)
if len(ids[id]) == 1 {
repo.Digests = append(repo.Digests, importDigest{
Name: defaultRef.ID,
Image: cache[id],
})
}
} else {
var toName string
if spec.To != nil {
toName = spec.To.Name
} else {
toName = defaultRef.Tag
}
tagReference := stream.Spec.Tags[toName]
preferArch := tagReference.Annotations[imageapi.ImporterPreferArchAnnotation]
preferOS := tagReference.Annotations[imageapi.ImporterPreferOSAnnotation]
tag := manifestKey{repositoryKey: key, preferArch: preferArch, preferOS: preferOS}
tag.value = defaultRef.Tag
tags[tag] = append(tags[tag], i)
if len(tags[tag]) == 1 {
repo.Tags = append(repo.Tags, importTag{
Name: defaultRef.Tag,
PreferArch: preferArch,
PreferOS: preferOS,
Image: cache[tag],
})
}
}
}
// for each repository we found, import all tags and digests
for key, repo := range repositories {
i.importRepositoryFromDocker(ctx, retriever, repo, limiter)
for _, tag := range repo.Tags {
j := manifestKey{repositoryKey: key, preferArch: tag.PreferArch, preferOS: tag.PreferOS}
j.value = tag.Name
if tag.Image != nil {
cache[j] = tag.Image
}
for _, index := range tags[j] {
if tag.Err != nil {
setImageImportStatus(isi, index, tag.Name, tag.Err)
continue
}
copied := *tag.Image
image := &isi.Status.Images[index]
ref := repo.Ref
ref.Tag, ref.ID = tag.Name, copied.Name
copied.DockerImageReference = ref.MostSpecific().Exact()
image.Tag = tag.Name
image.Image = &copied
image.Status.Status = metav1.StatusSuccess
}
}
for _, digest := range repo.Digests {
j := manifestKey{repositoryKey: key}
j.value = digest.Name
if digest.Image != nil {
cache[j] = digest.Image
}
for _, index := range ids[j] {
if digest.Err != nil {
setImageImportStatus(isi, index, "", digest.Err)
continue
}
image := &isi.Status.Images[index]
copied := *digest.Image
ref := repo.Ref
ref.Tag, ref.ID = "", copied.Name
copied.DockerImageReference = ref.MostSpecific().Exact()
image.Image = &copied
image.Status.Status = metav1.StatusSuccess
}
}
}
}
// importFromRepository imports the repository named on the ImageStreamImport, if any, importing up to maximumTags, and reporting
// status on each image that is attempted to be imported. If the repository cannot be found or tags cannot be retrieved, the repository
// status field is set.
func (i *ImageStreamImporter) importFromRepository(ctx gocontext.Context, retriever RepositoryRetriever, isi *imageapi.ImageStreamImport, maximumTags int, limiter flowcontrol.RateLimiter) {
if isi.Spec.Repository == nil {
return
}
cache := i.digestToRepositoryCache[ctx]
isi.Status.Repository = &imageapi.RepositoryImportStatus{}
status := isi.Status.Repository
spec := isi.Spec.Repository
from := spec.From
if from.Kind != "DockerImage" {
return
}
// TODO: This should be removed in 1.6
// See for more info: https://github.com/openshift/origin/pull/11774#issuecomment-258905994
var (
err error
ref imageapi.DockerImageReference
)
if from.Name != "*" {
ref, err = imageapi.ParseDockerImageReference(from.Name)
if err != nil {
status.Status = invalidStatus("", field.Invalid(field.NewPath("from", "name"), from.Name, fmt.Sprintf("invalid name: %v", err)))
return
}
} else {
ref = imageapi.DockerImageReference{Name: from.Name}
}
defaultRef := ref.DockerClientDefaults()
repoName := defaultRef.RepositoryName()
registryURL := defaultRef.RegistryURL()
key := repositoryKey{url: *registryURL, name: repoName}
repo := &importRepository{
Ref: ref,
Registry: &key.url,
Name: key.name,
Insecure: spec.ImportPolicy.Insecure,
MaximumTags: maximumTags,
}
i.importRepositoryFromDocker(ctx, retriever, repo, limiter)
if repo.Err != nil {
status.Status = imageImportStatus(repo.Err, "", "repository")
return
}
additional := []string{}
tagKey := manifestKey{repositoryKey: key}
for _, s := range repo.AdditionalTags {
tagKey.value = s
if image, ok := cache[tagKey]; ok {
repo.Tags = append(repo.Tags, importTag{
Name: s,
Image: image,
})
} else {
additional = append(additional, s)
}
}
status.AdditionalTags = additional
failures := 0
status.Status.Status = metav1.StatusSuccess
status.Images = make([]imageapi.ImageImportStatus, len(repo.Tags))
for i, tag := range repo.Tags {
status.Images[i].Tag = tag.Name
if tag.Err != nil {
failures++
status.Images[i].Status = imageImportStatus(tag.Err, "", "repository")
continue
}
status.Images[i].Status.Status = metav1.StatusSuccess
copied := *tag.Image
ref.Tag, ref.ID = tag.Name, copied.Name
copied.DockerImageReference = ref.MostSpecific().Exact()
status.Images[i].Image = &copied
}
if failures > 0 {
status.Status.Status = metav1.StatusFailure
status.Status.Reason = metav1.StatusReason("ImportFailed")
switch failures {
case 1:
status.Status.Message = "one of the images from this repository failed to import"
default:
status.Status.Message = fmt.Sprintf("%d of the images from this repository failed to import", failures)
}
}
}
func applyErrorToRepository(repository *importRepository, err error) {
repository.Err = err
for i := range repository.Tags {
repository.Tags[i].Err = err
}
for i := range repository.Digests {
repository.Digests[i].Err = err
}
}
func formatRepositoryError(ref imageapi.DockerImageReference, err error) error {
switch {
case isDockerError(err, v2.ErrorCodeManifestUnknown):
err = kapierrors.NewNotFound(image.Resource("dockerimage"), ref.Exact())
case isDockerError(err, errcode.ErrorCodeUnauthorized):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q", ref.Exact()))
case strings.HasSuffix(err.Error(), "no basic auth credentials"):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q", ref.Exact()))
case strings.HasSuffix(err.Error(), "incorrect username or password"):
err = kapierrors.NewUnauthorized(fmt.Sprintf("incorrect username or password for image %q", ref.Exact()))
}
return err
}
// calculateImageSize gets and updates size of each image layer. If manifest v2 is converted to v1,
// then it loses information about layers size. We have to get this information from server again.
func (isi *ImageStreamImporter) calculateImageSize(ctx gocontext.Context, bs distribution.BlobStore, image *imageapi.Image) error {
blobSet := sets.NewString()
size := int64(0)
for i := range image.DockerImageLayers {
layer := &image.DockerImageLayers[i]
if blobSet.Has(layer.Name) {
continue
}
blobSet.Insert(layer.Name)
if layerSize, ok := isi.digestToLayerSizeCache.Get(layer.Name); ok {
layerSize := layerSize.(int64)
layer.LayerSize = layerSize
size += layerSize
continue
}
desc, err := bs.Stat(ctx, godigest.Digest(layer.Name))
if err != nil {
return err
}
isi.digestToLayerSizeCache.Add(layer.Name, desc.Size)
layer.LayerSize = desc.Size
size += desc.Size
}
if len(image.DockerImageConfig) > 0 && !blobSet.Has(image.DockerImageMetadata.ID) {
blobSet.Insert(image.DockerImageMetadata.ID)
size += int64(len(image.DockerImageConfig))
}
image.DockerImageMetadata.Size = size
return nil
}
func manifestFromManifestList(ctx gocontext.Context, manifestList *manifestlist.DeserializedManifestList, ref imageapi.DockerImageReference, s distribution.ManifestService, preferArch, preferOS string) (distribution.Manifest, error) {
if len(manifestList.Manifests) == 0 {
return nil, fmt.Errorf("no manifests in manifest list %s", ref.Exact())
}
if preferArch == "" {
preferArch = runtime.GOARCH
}
if preferOS == "" {
preferOS = runtime.GOOS
}
var manifestDigest godigest.Digest
for _, manifestDescriptor := range manifestList.Manifests {
if manifestDescriptor.Platform.Architecture == preferArch && manifestDescriptor.Platform.OS == preferOS {
manifestDigest = manifestDescriptor.Digest
break
}
}
if manifestDigest == "" {
glog.V(5).Infof("unable to find %s/%s manifest in manifest list %s, doing conservative fail by switching to the first one: %#+v", preferOS, preferArch, ref.Exact(), manifestList.Manifests[0])
manifestDigest = manifestList.Manifests[0].Digest
}
manifest, err := s.Get(ctx, manifestDigest)
if err != nil {
glog.V(5).Infof("unable to get %s/%s manifest by digest %q for image %s: %#v", preferOS, preferArch, manifestDigest, ref.Exact(), err)
return nil, formatRepositoryError(ref, err)
}
return manifest, err
}
func (isi *ImageStreamImporter) importManifest(ctx gocontext.Context, manifest distribution.Manifest, ref imageapi.DockerImageReference, d godigest.Digest, s distribution.ManifestService, b distribution.BlobStore, preferArch, preferOS string) (image *imageapi.Image, err error) {
if manifestList, ok := manifest.(*manifestlist.DeserializedManifestList); ok {
manifest, err = manifestFromManifestList(ctx, manifestList, ref, s, preferArch, preferOS)
if err != nil {
return nil, err
}
}
if signedManifest, isSchema1 := manifest.(*schema1.SignedManifest); isSchema1 {
image, err = schema1ToImage(signedManifest, d)
} else if deserializedManifest, isSchema2 := manifest.(*schema2.DeserializedManifest); isSchema2 {
imageConfig, getImportConfigErr := b.Get(ctx, deserializedManifest.Config.Digest)
if getImportConfigErr != nil {
glog.V(5).Infof("unable to get image config by digest %q for image %s: %#v", d, ref.Exact(), getImportConfigErr)
return image, formatRepositoryError(ref, getImportConfigErr)
}
image, err = schema2ToImage(deserializedManifest, imageConfig, d)
} else {
err = fmt.Errorf("unsupported image manifest type: %T", manifest)
glog.V(5).Info(err)
}
if err != nil {
return
}
if err := util.ImageWithMetadata(image); err != nil {
return image, err
}
if image.DockerImageMetadata.Size == 0 {
if err := isi.calculateImageSize(ctx, b, image); err != nil {
return image, err
}
}
return
}
// importRepositoryFromDocker loads the tags and images requested in the passed importRepository, obeying the
// optional rate limiter. Errors are set onto the individual tags and digest objects.
func (isi *ImageStreamImporter) importRepositoryFromDocker(ctx gocontext.Context, retriever RepositoryRetriever, repository *importRepository, limiter flowcontrol.RateLimiter) {
glog.V(5).Infof("importing remote Docker repository registry=%s repository=%s insecure=%t", repository.Registry, repository.Name, repository.Insecure)
// retrieve the repository
repo, err := retriever.Repository(ctx, repository.Registry, repository.Name, repository.Insecure)
if err != nil {
glog.V(5).Infof("unable to access repository %#v: %#v", repository, err)
switch {
case err == reference.ErrReferenceInvalidFormat:
err = field.Invalid(field.NewPath("from", "name"), repository.Name, "the provided repository name is not valid")
case isDockerError(err, v2.ErrorCodeNameUnknown):
err = kapierrors.NewNotFound(image.Resource("dockerimage"), repository.Ref.Exact())
case isDockerError(err, errcode.ErrorCodeUnauthorized):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q", repository.Ref.Exact()))
case strings.Contains(err.Error(), "tls: oversized record received with length") && !repository.Insecure:
err = kapierrors.NewBadRequest("this repository is HTTP only and requires the insecure flag to import")
case strings.HasSuffix(err.Error(), "no basic auth credentials"):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q and did not have credentials to the repository", repository.Ref.Exact()))
case strings.HasSuffix(err.Error(), "does not support v2 API"):
importRepositoryFromDockerV1(ctx, repository, limiter)
return
}
applyErrorToRepository(repository, err)
return
}
// get a manifest context
s, err := repo.Manifests(ctx)
if err != nil {
glog.V(5).Infof("unable to access manifests for repository %#v: %#v", repository, err)
switch {
case isDockerError(err, v2.ErrorCodeNameUnknown):
err = kapierrors.NewNotFound(image.Resource("dockerimage"), repository.Ref.Exact())
case isDockerError(err, errcode.ErrorCodeUnauthorized):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q", repository.Ref.Exact()))
case strings.HasSuffix(err.Error(), "no basic auth credentials"):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q and did not have credentials to the repository", repository.Ref.Exact()))
}
applyErrorToRepository(repository, err)
return
}
// get a blob context
b := repo.Blobs(ctx)
// if repository import is requested (MaximumTags), attempt to load the tags, sort them, and request the first N
if count := repository.MaximumTags; count > 0 || count == -1 {
tags, err := repo.Tags(ctx).All(ctx)
if err != nil {
glog.V(5).Infof("unable to access tags for repository %#v: %#v", repository, err)
switch {
case isDockerError(err, v2.ErrorCodeNameUnknown):
err = kapierrors.NewNotFound(image.Resource("dockerimage"), repository.Ref.Exact())
case isDockerError(err, errcode.ErrorCodeUnauthorized):
err = kapierrors.NewUnauthorized(fmt.Sprintf("you may not have access to the Docker image %q", repository.Ref.Exact()))
}
repository.Err = err
return
}
// some images on the Hub have empty tags - treat those as "latest"
set := sets.NewString(tags...)
if set.Has("") {
set.Delete("")
set.Insert(imageapi.DefaultImageTag)
}
tags = set.List()
// include only the top N tags in the result, put the rest in AdditionalTags
imageapi.PrioritizeTags(tags)
for _, s := range tags {
if count <= 0 && repository.MaximumTags != -1 {
repository.AdditionalTags = append(repository.AdditionalTags, s)
continue
}
count--
repository.Tags = append(repository.Tags, importTag{
Name: s,
})
}
}
// load digests
for i := range repository.Digests {
importDigest := &repository.Digests[i]
if importDigest.Err != nil || importDigest.Image != nil {
continue
}
d, err := godigest.Parse(importDigest.Name)
if err != nil {
importDigest.Err = err
continue
}
ref := repository.Ref
ref.Tag = ""
ref.ID = string(d)
limiter.Accept()
manifest, err := s.Get(ctx, d)
if err != nil {
glog.V(5).Infof("unable to get manifest by digest %q for image %s: %#v", d, ref.Exact(), err)
importDigest.Err = formatRepositoryError(ref, err)
continue
}
importDigest.Image, importDigest.Err = isi.importManifest(ctx, manifest, ref, d, s, b, "", "")
}
for i := range repository.Tags {
importTag := &repository.Tags[i]
if importTag.Err != nil || importTag.Image != nil {
continue
}
ref := repository.Ref
ref.Tag = importTag.Name
ref.ID = ""
limiter.Accept()
manifest, err := s.Get(ctx, "", distribution.WithTag(importTag.Name))
if err != nil {
glog.V(5).Infof("unable to get manifest by tag %q for image %s: %#v", importTag.Name, ref.Exact(), err)
importTag.Err = formatRepositoryError(ref, err)
continue
}
importTag.Image, importTag.Err = isi.importManifest(ctx, manifest, ref, "", s, b, importTag.PreferArch, importTag.PreferOS)
}
}
func importRepositoryFromDockerV1(ctx gocontext.Context, repository *importRepository, limiter flowcontrol.RateLimiter) {
value := ctx.Value(ContextKeyV1RegistryClient)
if value == nil {
err := kapierrors.NewForbidden(image.Resource(""), "", fmt.Errorf("registry %q does not support the v2 Registry API", repository.Registry.Host))
err.ErrStatus.Reason = "NotV2Registry"
applyErrorToRepository(repository, err)
return
}
client, ok := value.(dockerv1client.Client)
if !ok {
err := kapierrors.NewForbidden(image.Resource(""), "", fmt.Errorf("registry %q does not support the v2 Registry API", repository.Registry.Host))
err.ErrStatus.Reason = "NotV2Registry"
return
}
conn, err := client.Connect(repository.Registry.Host, repository.Insecure)
if err != nil {
applyErrorToRepository(repository, err)
return
}
// if repository import is requested (MaximumTags), attempt to load the tags, sort them, and request the first N
if count := repository.MaximumTags; count > 0 || count == -1 {
tagMap, err := conn.ImageTags(repository.Ref.Namespace, repository.Ref.Name)
if err != nil {
repository.Err = err
return
}
tags := make([]string, 0, len(tagMap))
for tag := range tagMap {
tags = append(tags, tag)
}
// some images on the Hub have empty tags - treat those as "latest"
set := sets.NewString(tags...)
if set.Has("") {
set.Delete("")
set.Insert(imageapi.DefaultImageTag)
}
tags = set.List()
// include only the top N tags in the result, put the rest in AdditionalTags
imageapi.PrioritizeTags(tags)
for _, s := range tags {
if count <= 0 && repository.MaximumTags != -1 {
repository.AdditionalTags = append(repository.AdditionalTags, s)
continue
}
count--
repository.Tags = append(repository.Tags, importTag{
Name: s,
})
}
}
// load digests
for i := range repository.Digests {
importDigest := &repository.Digests[i]
if importDigest.Err != nil || importDigest.Image != nil {
continue
}
limiter.Accept()
image, err := conn.ImageByID(repository.Ref.Namespace, repository.Ref.Name, importDigest.Name)
if err != nil {
importDigest.Err = err
continue
}
// we do not preserve manifests of legacy images
importDigest.Image, err = schema0ToImage(image)
if err != nil {
importDigest.Err = err
continue
}
}
for i := range repository.Tags {
importTag := &repository.Tags[i]
if importTag.Err != nil || importTag.Image != nil {
continue
}
limiter.Accept()
image, err := conn.ImageByTag(repository.Ref.Namespace, repository.Ref.Name, importTag.Name)
if err != nil {
importTag.Err = err
continue
}
// we do not preserve manifests of legacy images
importTag.Image, err = schema0ToImage(image)
if err != nil {
importTag.Err = err
continue
}
}
}
type importTag struct {
Name string
PreferArch string
PreferOS string
Image *imageapi.Image
Err error
}
type importDigest struct {
Name string
Image *imageapi.Image
Err error
}
type importRepository struct {
Ref imageapi.DockerImageReference
Registry *url.URL
Name string
Insecure bool
Tags []importTag
Digests []importDigest
MaximumTags int
AdditionalTags []string
Err error
}
// repositoryKey is the key used to cache information loaded from a remote Docker repository.
type repositoryKey struct {
// The URL of the server
url url.URL
// The name of the image repository (contains both namespace and path)
name string
}
// manifestKey is a key for a map between a Docker image tag or image ID and a retrieved imageapi.Image, used
// to ensure we don't fetch the same image multiple times.
type manifestKey struct {
repositoryKey
// The tag or ID of the image, not used within the same map
value string
// An architecture of the image which should be selected from a manifest list.
preferArch string
// An operation system of the image which should be selected from a manifest list.
preferOS string
}
func imageImportStatus(err error, kind, position string) metav1.Status {
switch t := err.(type) {
case kapierrors.APIStatus:
return t.Status()
case *field.Error:
return kapierrors.NewInvalid(image.Kind(kind), position, field.ErrorList{t}).ErrStatus
default:
return kapierrors.NewInternalError(err).ErrStatus
}
}
func setImageImportStatus(images *imageapi.ImageStreamImport, i int, tag string, err error) {
images.Status.Images[i].Tag = tag
images.Status.Images[i].Status = imageImportStatus(err, "", "")
}
func invalidStatus(position string, errs ...*field.Error) metav1.Status {
return kapierrors.NewInvalid(legacy.Kind(""), position, errs).ErrStatus
}