Drop support for image manifest schema 1

Author: tchap

pkg/image/apis/image/docker10/types.go

@@ -28,13 +28,6 @@ type DockerImageManifest struct {
 	SchemaVersion int    `json:"schemaVersion"`
 	MediaType     string `json:"mediaType,omitempty"`
 
-	// schema1
-	Name         string          `json:"name"`
-	Tag          string          `json:"tag"`
-	Architecture string          `json:"architecture"`
-	FSLayers     []DockerFSLayer `json:"fsLayers"`
-	History      []DockerHistory `json:"history"`
-
 	// schema2
 	Layers []Descriptor `json:"layers"`
 	Config Descriptor   `json:"config"`

pkg/image/apiserver/importer/image.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/distribution/distribution/v3"
 	"github.com/distribution/distribution/v3/manifest/manifestlist"
-	"github.com/distribution/distribution/v3/manifest/schema1"
 	"github.com/distribution/distribution/v3/registry/api/errcode"
 	godigest "github.com/opencontainers/go-digest"
 
@@ -18,41 +17,6 @@ import (
 	imagedockerpre012 "github.com/openshift/openshift-apiserver/pkg/image/apis/image/dockerpre012"
 )
 
-func schema1ToImage(manifest *schema1.SignedManifest, d godigest.Digest) (*imageapi.Image, error) {
-	if len(manifest.History) == 0 {
-		return nil, fmt.Errorf("image has no v1Compatibility history and cannot be used")
-	}
-	dockerImage, err := unmarshalDockerImage([]byte(manifest.History[0].V1Compatibility))
-	if err != nil {
-		return nil, err
-	}
-	mediatype, payload, err := manifest.Payload()
-	if err != nil {
-		return nil, err
-	}
-
-	if len(manifest.Canonical) == 0 {
-		return nil, fmt.Errorf("unable to load canonical representation from schema1 manifest")
-	}
-	payloadDigest := godigest.FromBytes(manifest.Canonical)
-	if len(d) > 0 && payloadDigest != d {
-		return nil, fmt.Errorf("content integrity error: the schema 1 manifest retrieved with digest %s does not match the digest calculated from the content %s", d, payloadDigest)
-	}
-	dockerImage.ID = payloadDigest.String()
-
-	image := &imageapi.Image{
-		ObjectMeta: metav1.ObjectMeta{
-			Name: dockerImage.ID,
-		},
-		DockerImageMetadata:          *dockerImage,
-		DockerImageManifest:          string(payload),
-		DockerImageManifestMediaType: mediatype,
-		DockerImageMetadataVersion:   "1.0",
-	}
-
-	return image, nil
-}
-
 // schema2OrOCIToImage converts a docker schema 2 or an oci schema manifest into an Image.
 func schema2OrOCIToImage(manifest distribution.Manifest, imageConfig []byte, d godigest.Digest) (*imageapi.Image, error) {
 	mediatype, payload, err := manifest.Payload()

pkg/image/apiserver/importer/importer.go

@@ -12,7 +12,6 @@ import (
 	"github.com/distribution/distribution/v3"
 	"github.com/distribution/distribution/v3/manifest/manifestlist"
 	"github.com/distribution/distribution/v3/manifest/ocischema"
-	"github.com/distribution/distribution/v3/manifest/schema1"
 	"github.com/distribution/distribution/v3/manifest/schema2"
 	"github.com/distribution/distribution/v3/reference"
 	"github.com/distribution/distribution/v3/registry/api/errcode"
@@ -743,8 +742,6 @@ func (imp *ImageStreamImporter) importManifest(
 	if isManifestList && !legacyManifestListImport {
 		image, err = manifestListToImage(manifestList, d)
 		return
-	} else 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 {

pkg/image/apiserver/importer/importer_test.go

@@ -2,7 +2,6 @@ package importer
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -11,7 +10,6 @@ import (
 
 	"github.com/containers/image/v5/pkg/sysregistriesv2"
 	"github.com/distribution/distribution/v3"
-	"github.com/distribution/distribution/v3/manifest/schema1"
 	"github.com/distribution/distribution/v3/manifest/schema2"
 	"github.com/distribution/distribution/v3/reference"
 	godigest "github.com/opencontainers/go-digest"
@@ -169,20 +167,6 @@ func (r *mockTagService) Lookup(ctx context.Context, digest distribution.Descrip
 	return nil, fmt.Errorf("not implemented")
 }
 
-func TestSchema1ToImage(t *testing.T) {
-	m := &schema1.SignedManifest{}
-	if err := json.Unmarshal([]byte(etcdManifest), m); err != nil {
-		t.Fatal(err)
-	}
-	image, err := schema1ToImage(m, godigest.Digest("sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238"))
-	if err != nil {
-		t.Fatal(err)
-	}
-	if image.DockerImageMetadata.ID != "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238" {
-		t.Errorf("unexpected image: %#v", image.DockerImageMetadata.ID)
-	}
-}
-
 func TestImportNothing(t *testing.T) {
 	ctx := NewStaticCredentialsContext(
 		http.DefaultTransport, http.DefaultTransport, nil,
@@ -202,11 +186,6 @@ func expectStatusError(status metav1.Status, message string) bool {
 }
 
 func TestImport(t *testing.T) {
-	etcdManifestSchema1 := &schema1.SignedManifest{}
-	if err := json.Unmarshal([]byte(etcdManifest), etcdManifestSchema1); err != nil {
-		t.Fatal(err)
-	}
-	t.Logf("etcd manifest schema 1 digest: %q", godigest.FromBytes([]byte(etcdManifest)))
 	busyboxManifestSchema2 := &schema2.DeserializedManifest{}
 	if err := busyboxManifestSchema2.UnmarshalJSON([]byte(busyboxManifest)); err != nil {
 		t.Fatal(err)
@@ -312,12 +291,21 @@ func TestImport(t *testing.T) {
 			},
 		},
 		{
-			name:      "successfull import by tag and digest",
-			retriever: &mockRetriever{repo: &mockRepository{manifest: etcdManifestSchema1}},
+			name: "successful import by tag and digest",
+			retriever: &mockRetriever{
+				repo: &mockRepository{
+					blobs: &mockBlobStore{
+						blobs: map[godigest.Digest][]byte{
+							busyboxConfigDigest: []byte(busyboxManifestConfig),
+						},
+					},
+					manifest: busyboxManifestSchema2,
+				},
+			},
 			isi: imageapi.ImageStreamImport{
 				Spec: imageapi.ImageStreamImportSpec{
 					Images: []imageapi.ImageImportSpec{
-						{From: kapi.ObjectReference{Kind: "DockerImage", Name: "test@sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238"}},
+						{From: kapi.ObjectReference{Kind: "DockerImage", Name: "test@" + busyboxDigest}},
 						{From: kapi.ObjectReference{Kind: "DockerImage", Name: "test:tag"}},
 					},
 				},
@@ -331,13 +319,17 @@ func TestImport(t *testing.T) {
 					if image.Status.Status != metav1.StatusSuccess {
 						t.Errorf("unexpected status %d: %#v", i, image.Status)
 					}
-					// the image name is always the sha256, and size is calculated
-					if image.Image == nil || image.Image.Name != "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238" || image.Image.DockerImageMetadata.Size != 28643712 {
-						t.Errorf("unexpected image %d: %#v", i, image.Image.Name)
-					}
-					// the most specific reference is returned
-					if image.Image.DockerImageReference != "test@sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238" {
-						t.Errorf("unexpected ref %d: %#v", i, image.Image.DockerImageReference)
+					if image.Image == nil {
+						t.Errorf("unexpected nil image: %#v", image)
+					} else {
+						// the image name is always the sha256, and size is calculated
+						if image.Image.Name != busyboxDigest || image.Image.DockerImageMetadata.Size != 669049 {
+							t.Errorf("unexpected image %d: %#v (size %d)", i, image.Image.Name, image.Image.DockerImageMetadata.Size)
+						}
+						// the most specific reference is returned
+						if image.Image.DockerImageReference != "test@"+busyboxDigest {
+							t.Errorf("unexpected ref %d: %#v", i, image.Image.DockerImageReference)
+						}
 					}
 					if image.Tag != expectedTags[i] {
 						t.Errorf("unexpected tag of status %d (%s != %s)", i, image.Tag, expectedTags[i])
@@ -392,14 +384,14 @@ func TestImport(t *testing.T) {
 			name: "import repository with additional tags",
 			retriever: &mockRetriever{
 				repo: &mockRepository{
-					manifest: etcdManifestSchema1,
+					manifest: busyboxManifestSchema2,
 					tags: map[string]string{
-						"v1":    "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
-						"other": "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
-						"v2":    "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
-						"3":     "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
-						"3.1":   "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
-						"abc":   "sha256:958608f8ecc1dc62c93b6c610f3a834dae4220c9642e6e8b4e0f2b3ad7cbd238",
+						"v1":    busyboxDigest,
+						"other": busyboxDigest,
+						"v2":    busyboxDigest,
+						"3":     busyboxDigest,
+						"3.1":   busyboxDigest,
+						"abc":   busyboxDigest,
 					},
 					getTagErr:   fmt.Errorf("no such tag"),
 					getByTagErr: fmt.Errorf("no such manifest tag"),
@@ -640,56 +632,6 @@ func TestImportFromMirror(t *testing.T) {
 	})
 }
 
-const etcdManifest = `
-{
-   "schemaVersion": 1, 
-   "tag": "latest", 
-   "name": "coreos/etcd", 
-   "architecture": "amd64", 
-   "fsLayers": [
-      {
-         "blobSum": "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4"
-      }, 
-      {
-         "blobSum": "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4"
-      }, 
-      {
-         "blobSum": "sha256:2560187847cadddef806eaf244b7755af247a9dbabb90ca953dd2703cf423766"
-      }, 
-      {
-         "blobSum": "sha256:744b46d0ac8636c45870a03830d8d82c20b75fbfb9bc937d5e61005d23ad4cfe"
-      }
-   ], 
-   "history": [
-      {
-         "v1Compatibility": "{\"id\":\"fe50ac14986497fa6b5d2cc24feb4a561d01767bc64413752c0988cb70b0b8b9\",\"parent\":\"a5a18474fa96a3c6e240bc88e41de2afd236520caf904356ad9d5f8d875c3481\",\"created\":\"2015-12-30T22:29:13.967754365Z\",\"container\":\"c8d0f1a274b5f52fa5beb280775ef07cf18ec0f95e5ae42fbad01157e2614d42\",\"container_config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"ExposedPorts\":{\"2379/tcp\":{},\"2380/tcp\":{},\"4001/tcp\":{},\"7001/tcp\":{}},\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":[\"/bin/sh\",\"-c\",\"#(nop) ENTRYPOINT \\u0026{[\\\"/etcd\\\"]}\"],\"Image\":\"a5a18474fa96a3c6e240bc88e41de2afd236520caf904356ad9d5f8d875c3481\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":[\"/etcd\"],\"OnBuild\":null,\"Labels\":{}},\"docker_version\":\"1.9.1\",\"config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"ExposedPorts\":{\"2379/tcp\":{},\"2380/tcp\":{},\"4001/tcp\":{},\"7001/tcp\":{}},\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":null,\"Image\":\"a5a18474fa96a3c6e240bc88e41de2afd236520caf904356ad9d5f8d875c3481\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":[\"/etcd\"],\"OnBuild\":null,\"Labels\":{}},\"architecture\":\"amd64\",\"os\":\"linux\"}"
-      }, 
-      {
-         "v1Compatibility": "{\"id\":\"a5a18474fa96a3c6e240bc88e41de2afd236520caf904356ad9d5f8d875c3481\",\"parent\":\"796d581500e960cc02095dcdeccf55db215b8e54c57e3a0b11392145ffe60cf6\",\"created\":\"2015-12-30T22:29:13.504159783Z\",\"container\":\"080708d544f85052a46fab72e701b4358c1b96cb4b805a5b2d66276fc2aaf85d\",\"container_config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"ExposedPorts\":{\"2379/tcp\":{},\"2380/tcp\":{},\"4001/tcp\":{},\"7001/tcp\":{}},\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":[\"/bin/sh\",\"-c\",\"#(nop) EXPOSE 2379/tcp 2380/tcp 4001/tcp 7001/tcp\"],\"Image\":\"796d581500e960cc02095dcdeccf55db215b8e54c57e3a0b11392145ffe60cf6\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":{}},\"docker_version\":\"1.9.1\",\"config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"ExposedPorts\":{\"2379/tcp\":{},\"2380/tcp\":{},\"4001/tcp\":{},\"7001/tcp\":{}},\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":null,\"Image\":\"796d581500e960cc02095dcdeccf55db215b8e54c57e3a0b11392145ffe60cf6\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":{}},\"architecture\":\"amd64\",\"os\":\"linux\"}"
-      }, 
-      {
-         "v1Compatibility": "{\"id\":\"796d581500e960cc02095dcdeccf55db215b8e54c57e3a0b11392145ffe60cf6\",\"parent\":\"309c960c7f875411ae2ee2bfb97b86eee5058f3dad77206dd0df4f97df8a77fa\",\"created\":\"2015-12-30T22:29:12.912813629Z\",\"container\":\"f28be899c9b8680d4cf8585e663ad20b35019db062526844e7cfef117ce9037f\",\"container_config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":[\"/bin/sh\",\"-c\",\"#(nop) ADD file:e330b1da49d993059975e46560b3bd360691498b0f2f6e00f39fc160cf8d4ec3 in /\"],\"Image\":\"309c960c7f875411ae2ee2bfb97b86eee5058f3dad77206dd0df4f97df8a77fa\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":{}},\"docker_version\":\"1.9.1\",\"config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":null,\"Image\":\"309c960c7f875411ae2ee2bfb97b86eee5058f3dad77206dd0df4f97df8a77fa\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":{}},\"architecture\":\"amd64\",\"os\":\"linux\",\"Size\":13502144}"
-      }, 
-      {
-         "v1Compatibility": "{\"id\":\"309c960c7f875411ae2ee2bfb97b86eee5058f3dad77206dd0df4f97df8a77fa\",\"created\":\"2015-12-30T22:29:12.346834862Z\",\"container\":\"1b97abade59e4b5b935aede236980a54fb500cd9ee5bd4323c832c6d7b3ffc6e\",\"container_config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":[\"/bin/sh\",\"-c\",\"#(nop) ADD file:74912593c6783292c4520514f5cc9313acbd1da0f46edee0fdbed2a24a264d6f in /\"],\"Image\":\"\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":null},\"docker_version\":\"1.9.1\",\"config\":{\"Hostname\":\"1b97abade59e\",\"Domainname\":\"\",\"User\":\"\",\"AttachStdin\":false,\"AttachStdout\":false,\"AttachStderr\":false,\"Tty\":false,\"OpenStdin\":false,\"StdinOnce\":false,\"Env\":null,\"Cmd\":null,\"Image\":\"\",\"Volumes\":null,\"WorkingDir\":\"\",\"Entrypoint\":null,\"OnBuild\":null,\"Labels\":null},\"architecture\":\"amd64\",\"os\":\"linux\",\"Size\":15141568}"
-      }
-   ], 
-   "signatures": [
-      {
-         "header": {
-            "alg": "RS256", 
-            "jwk": {
-               "e": "AQAB", 
-               "kty": "RSA", 
-               "n": "yB40ou1GMvIxYs1jhxWaeoDiw3oa0_Q2UJThUPtArvO0tRzaun9FnSphhOEHIGcezfq95jy-3MN-FIjmsWgbPHY8lVDS38fF75aCw6qkholwqjmMtUIgPNYoMrg0rLUE5RRyJ84-hKf9Fk7V3fItp1mvCTGKaS3ze-y5dTTrfbNGE7qG638Dla2Fuz-9CNgRQj0JH54o547WkKJC-pG-j0jTDr8lzsXhrZC7lJas4yc-vpt3D60iG4cW_mkdtIj52ZFEgHZ56sUj7AhnNVly0ZP9W1hmw4xEHDn9WLjlt7ivwARVeb2qzsNdguUitcI5hUQNwpOVZ_O3f1rUIL_kRw"
-            }
-         }, 
-         "protected": "eyJmb3JtYXRUYWlsIjogIkNuMCIsICJmb3JtYXRMZW5ndGgiOiA1OTI2LCAidGltZSI6ICIyMDE2LTAxLTAyVDAyOjAxOjMzWiJ9", 
-         "signature": "DrQ43UWeit-thDoRGTCP0Gd2wL5K2ecyPhHo_au0FoXwuKODja0tfwHexB9ypvFWngk-ijXuwO02x3aRIZqkWpvKLxxzxwkrZnPSje4o_VrFU4z5zwmN8sJw52ODkQlW38PURIVksOxCrb0zRl87yTAAsUAJ_4UUPNltZSLnhwy-qPb2NQ8ghgsONcBxRQrhPFiWNkxDKZ3kjvzYyrXDxTcvwK3Kk_YagZ4rCOhH1B7mAdVSiSHIvvNV5grPshw_ipAoqL2iNMsxWxLjYZl9xSJQI2asaq3fvh8G8cZ7T-OahDUos_GyhnIj39C-9ouqdJqMUYFETqbzRCR6d36CpQ"
-      }
-   ]
-}`
-
 const busyboxDigest = "sha256:a59906e33509d14c036c8678d687bd4eec81ed7c4b8ce907b888c607f6a1e0e6"
 
 const busyboxManifest = `{

pkg/image/apiserver/internal/imageutil/helpers.go

@@ -7,7 +7,6 @@ import (
 
 	"github.com/distribution/distribution/v3/manifest/manifestlist"
 	"github.com/distribution/distribution/v3/manifest/ocischema"
-	"github.com/distribution/distribution/v3/manifest/schema1"
 	"github.com/distribution/distribution/v3/manifest/schema2"
 	godigest "github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
@@ -58,22 +57,6 @@ func InternalImageWithMetadata(image *imageapi.Image) error {
 	}
 
 	switch manifest.SchemaVersion {
-	case 1:
-		image.DockerImageManifestMediaType = schema1.MediaTypeManifest
-
-		if len(manifest.History) == 0 {
-			// It should never have an empty history, but just in case.
-			return fmt.Errorf("the image %s (%s) has a schema 1 manifest, but it doesn't have history", image.Name, image.DockerImageReference)
-		}
-
-		v1Metadata := dockerapi10.DockerV1CompatibilityImage{}
-		if err := json.Unmarshal([]byte(manifest.History[0].DockerV1Compatibility), &v1Metadata); err != nil {
-			return err
-		}
-
-		if err := dockerapi10.Convert_DockerV1CompatibilityImage_to_image_DockerImage(&v1Metadata, &image.DockerImageMetadata); err != nil {
-			return err
-		}
 	case 2:
 		if manifest.MediaType != "" {
 			image.DockerImageManifestMediaType = manifest.MediaType
@@ -127,30 +110,6 @@ func fillImageLayers(image *imageapi.Image, manifest dockerapi10.DockerImageMani
 	}
 
 	switch manifest.SchemaVersion {
-	case 1:
-		if len(manifest.History) != len(manifest.FSLayers) {
-			return fmt.Errorf("the image %s (%s) has mismatched history and fslayer cardinality (%d != %d)", image.Name, image.DockerImageReference, len(manifest.History), len(manifest.FSLayers))
-		}
-
-		image.DockerImageLayers = make([]imageapi.ImageLayer, len(manifest.FSLayers))
-		for i, obj := range manifest.History {
-			layer := manifest.FSLayers[i]
-
-			var size dockerapi10.DockerV1CompatibilityImageSize
-			if err := json.Unmarshal([]byte(obj.DockerV1Compatibility), &size); err != nil {
-				size.Size = 0
-			}
-
-			// reverse order of the layers: in schema1 manifests the
-			// first layer is the youngest (base layers are at the
-			// end), but we want to store layers in the Image resource
-			// in order from the oldest to the youngest.
-			revidx := (len(manifest.History) - 1) - i // n-1, n-2, ..., 1, 0
-
-			image.DockerImageLayers[revidx].Name = layer.DockerBlobSum
-			image.DockerImageLayers[revidx].LayerSize = size.Size
-			image.DockerImageLayers[revidx].MediaType = schema1.MediaTypeManifestLayer
-		}
 	case 2:
 		// The layer list is ordered starting from the base image (opposite order of schema1).
 		// So, we do not need to change the order of layers.
@@ -182,8 +141,6 @@ func reorderImageLayers(image *imageapi.Image) {
 	layersOrder, ok := image.Annotations[imagev1.DockerImageLayersOrderAnnotation]
 	if !ok {
 		switch image.DockerImageManifestMediaType {
-		case schema1.MediaTypeManifest, schema1.MediaTypeSignedManifest:
-			layersOrder = imagev1.DockerImageLayersOrderAscending
 		case schema2.MediaTypeManifest, imgspecv1.MediaTypeImageManifest:
 			layersOrder = imagev1.DockerImageLayersOrderDescending
 		default:
@@ -232,12 +189,6 @@ func ManifestMatchesImage(image *imageapi.Image, newManifest []byte) (bool, erro
 		if err != nil {
 			return false, err
 		}
-	case schema1.MediaTypeManifest, "":
-		var m schema1.SignedManifest
-		if err := json.Unmarshal(newManifest, &m); err != nil {
-			return false, err
-		}
-		canonical = m.Canonical
 	default:
 		return false, fmt.Errorf("unsupported manifest mediatype: %s", image.DockerImageManifestMediaType)
 	}