func (p *v2Pusher) pushV2Tag(ctx context.Context, ref reference.NamedTagged, imageID image.ID) error {
logrus.Debugf("Pushing repository: %s", ref.String())
img, err := p.config.ImageStore.Get(imageID)
if err != nil {
return fmt.Errorf("could not find image from tag %s: %v", ref.String(), err)
}
var l layer.Layer
topLayerID := img.RootFS.ChainID()
if topLayerID == "" {
l = layer.EmptyLayer
} else {
l, err = p.config.LayerStore.Get(topLayerID)
if err != nil {
return fmt.Errorf("failed to get top layer from image: %v", err)
}
defer layer.ReleaseAndLog(p.config.LayerStore, l)
}
var descriptors []xfer.UploadDescriptor
descriptorTemplate := v2PushDescriptor{
v2MetadataService: p.v2MetadataService,
repoInfo: p.repoInfo,
repo: p.repo,
pushState: &p.pushState,
}
// Loop bounds condition is to avoid pushing the base layer on Windows.
for i := 0; i < len(img.RootFS.DiffIDs); i++ {
descriptor := descriptorTemplate
descriptor.layer = l
descriptors = append(descriptors, &descriptor)
l = l.Parent()
}
if err := p.config.UploadManager.Upload(ctx, descriptors, p.config.ProgressOutput); err != nil {
return err
}
// Try schema2 first
builder := schema2.NewManifestBuilder(p.repo.Blobs(ctx), img.RawJSON())
manifest, err := manifestFromBuilder(ctx, builder, descriptors)
if err != nil {
return err
}
manSvc, err := p.repo.Manifests(ctx)
if err != nil {
return err
}
putOptions := []distribution.ManifestServiceOption{client.WithTag(ref.Tag())}
if _, err = manSvc.Put(ctx, manifest, putOptions...); err != nil {
logrus.Warnf("failed to upload schema2 manifest: %v - falling back to schema1", err)
manifestRef, err := distreference.WithTag(p.repo.Named(), ref.Tag())
if err != nil {
return err
}
builder = schema1.NewConfigManifestBuilder(p.repo.Blobs(ctx), p.config.TrustKey, manifestRef, img.RawJSON())
manifest, err = manifestFromBuilder(ctx, builder, descriptors)
if err != nil {
return err
}
if _, err = manSvc.Put(ctx, manifest, putOptions...); err != nil {
return err
}
}
var canonicalManifest []byte
switch v := manifest.(type) {
case *schema1.SignedManifest:
canonicalManifest = v.Canonical
case *schema2.DeserializedManifest:
_, canonicalManifest, err = v.Payload()
if err != nil {
return err
}
}
manifestDigest := digest.FromBytes(canonicalManifest)
progress.Messagef(p.config.ProgressOutput, "", "%s: digest: %s size: %d", ref.Tag(), manifestDigest, len(canonicalManifest))
// Signal digest to the trust client so it can sign the
// push, if appropriate.
progress.Aux(p.config.ProgressOutput, PushResult{Tag: ref.Tag(), Digest: manifestDigest, Size: len(canonicalManifest)})
return nil
}
func (p *v2Puller) pullV2Tag(ctx context.Context, ref reference.Named) (tagUpdated bool, err error) {
manSvc, err := p.repo.Manifests(ctx)
if err != nil {
return false, err
}
var (
manifest distribution.Manifest
tagOrDigest string // Used for logging/progress only
)
if tagged, isTagged := ref.(reference.NamedTagged); isTagged {
// NOTE: not using TagService.Get, since it uses HEAD requests
// against the manifests endpoint, which are not supported by
// all registry versions.
manifest, err = manSvc.Get(ctx, "", client.WithTag(tagged.Tag()))
if err != nil {
return false, allowV1Fallback(err)
}
tagOrDigest = tagged.Tag()
} else if digested, isDigested := ref.(reference.Canonical); isDigested {
manifest, err = manSvc.Get(ctx, digested.Digest())
if err != nil {
return false, err
}
tagOrDigest = digested.Digest().String()
} else {
return false, fmt.Errorf("internal error: reference has neither a tag nor a digest: %s", ref.String())
}
if manifest == nil {
return false, fmt.Errorf("image manifest does not exist for tag or digest %q", tagOrDigest)
}
// If manSvc.Get succeeded, we can be confident that the registry on
// the other side speaks the v2 protocol.
p.confirmedV2 = true
logrus.Debugf("Pulling ref from V2 registry: %s", ref.String())
progress.Message(p.config.ProgressOutput, tagOrDigest, "Pulling from "+p.repo.Name())
var (
imageID image.ID
manifestDigest digest.Digest
)
switch v := manifest.(type) {
case *schema1.SignedManifest:
imageID, manifestDigest, err = p.pullSchema1(ctx, ref, v)
if err != nil {
return false, err
}
case *schema2.DeserializedManifest:
imageID, manifestDigest, err = p.pullSchema2(ctx, ref, v)
if err != nil {
return false, err
}
case *manifestlist.DeserializedManifestList:
imageID, manifestDigest, err = p.pullManifestList(ctx, ref, v)
if err != nil {
return false, err
}
default:
return false, errors.New("unsupported manifest format")
}
progress.Message(p.config.ProgressOutput, "", "Digest: "+manifestDigest.String())
oldTagImageID, err := p.config.ReferenceStore.Get(ref)
if err == nil {
if oldTagImageID == imageID {
return false, nil
}
} else if err != reference.ErrDoesNotExist {
return false, err
}
if canonical, ok := ref.(reference.Canonical); ok {
if err = p.config.ReferenceStore.AddDigest(canonical, imageID, true); err != nil {
return false, err
}
} else if err = p.config.ReferenceStore.AddTag(ref, imageID, true); err != nil {
return false, err
}
return true, nil
}
func (mf *v2ManifestFetcher) fetchWithRepository(ctx context.Context, ref reference.Named) (*imageInspect, error) {
var (
manifest distribution.Manifest
tagOrDigest string // Used for logging/progress only
tagList = []string{}
)
manSvc, err := mf.repo.Manifests(ctx)
if err != nil {
return nil, err
}
if _, isTagged := ref.(reference.NamedTagged); !isTagged {
ref, err = reference.WithTag(ref, reference.DefaultTag)
if err != nil {
return nil, err
}
}
if tagged, isTagged := ref.(reference.NamedTagged); isTagged {
// NOTE: not using TagService.Get, since it uses HEAD requests
// against the manifests endpoint, which are not supported by
// all registry versions.
manifest, err = manSvc.Get(ctx, "", client.WithTag(tagged.Tag()))
if err != nil {
return nil, allowV1Fallback(err)
}
tagOrDigest = tagged.Tag()
} else if digested, isDigested := ref.(reference.Canonical); isDigested {
manifest, err = manSvc.Get(ctx, digested.Digest())
if err != nil {
return nil, err
}
tagOrDigest = digested.Digest().String()
} else {
return nil, fmt.Errorf("internal error: reference has neither a tag nor a digest: %s", ref.String())
}
if manifest == nil {
return nil, fmt.Errorf("image manifest does not exist for tag or digest %q", tagOrDigest)
}
// If manSvc.Get succeeded, we can be confident that the registry on
// the other side speaks the v2 protocol.
mf.confirmedV2 = true
tagList, err = mf.repo.Tags(ctx).All(ctx)
if err != nil {
// If this repository doesn't exist on V2, we should
// permit a fallback to V1.
return nil, allowV1Fallback(err)
}
var (
image *image.Image
manifestDigest digest.Digest
)
switch v := manifest.(type) {
case *schema1.SignedManifest:
image, manifestDigest, err = mf.pullSchema1(ctx, ref, v)
if err != nil {
return nil, err
}
case *schema2.DeserializedManifest:
image, manifestDigest, err = mf.pullSchema2(ctx, ref, v)
if err != nil {
return nil, err
}
case *manifestlist.DeserializedManifestList:
image, manifestDigest, err = mf.pullManifestList(ctx, ref, v)
if err != nil {
return nil, err
}
default:
return nil, errors.New("unsupported manifest format")
}
// TODO(runcom)
//var showTags bool
//if reference.IsNameOnly(ref) {
//showTags = true
//logrus.Debug("Using default tag: latest")
//ref = reference.WithDefaultTag(ref)
//}
//_ = showTags
return makeImageInspect(image, tagOrDigest, manifestDigest, tagList), nil
}