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copy_test.go
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copy_test.go
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/*
Copyright The ORAS Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package oras_test
import (
"bytes"
"context"
_ "crypto/sha256"
"encoding/json"
"errors"
"fmt"
"io"
"reflect"
"sync/atomic"
"testing"
"github.com/opencontainers/go-digest"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"oras.land/oras-go/v2"
"oras.land/oras-go/v2/content"
"oras.land/oras-go/v2/content/file"
"oras.land/oras-go/v2/content/memory"
"oras.land/oras-go/v2/errdef"
"oras.land/oras-go/v2/internal/cas"
"oras.land/oras-go/v2/internal/docker"
"oras.land/oras-go/v2/internal/spec"
)
// storageTracker tracks storage API counts.
type storageTracker struct {
content.Storage
fetch int64
push int64
exists int64
}
func (t *storageTracker) Fetch(ctx context.Context, target ocispec.Descriptor) (io.ReadCloser, error) {
atomic.AddInt64(&t.fetch, 1)
return t.Storage.Fetch(ctx, target)
}
func (t *storageTracker) Push(ctx context.Context, expected ocispec.Descriptor, content io.Reader) error {
atomic.AddInt64(&t.push, 1)
return t.Storage.Push(ctx, expected, content)
}
func (t *storageTracker) Exists(ctx context.Context, target ocispec.Descriptor) (bool, error) {
atomic.AddInt64(&t.exists, 1)
return t.Storage.Exists(ctx, target)
}
func TestCopy_FullCopy(t *testing.T) {
src := memory.New()
dst := memory.New()
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
generateManifest := func(config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageManifest, manifestJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte("config")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
generateManifest(descs[0], descs[1:3]...) // Blob 3
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
root := descs[3]
ref := "foobar"
err := src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
// test copy
gotDesc, err := oras.Copy(ctx, src, ref, dst, "", oras.CopyOptions{})
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("Copy() = %v, want %v", gotDesc, root)
}
// verify contents
for i, desc := range descs {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, root)
}
}
func TestCopy_ExistedRoot(t *testing.T) {
src := memory.New()
dst := memory.New()
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
generateManifest := func(config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageManifest, manifestJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte("config")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
generateManifest(descs[0], descs[1:3]...) // Blob 3
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
root := descs[3]
ref := "foobar"
newTag := "newtag"
err := src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
var skippedCount int64
copyOpts := oras.CopyOptions{
CopyGraphOptions: oras.CopyGraphOptions{
OnCopySkipped: func(ctx context.Context, desc ocispec.Descriptor) error {
atomic.AddInt64(&skippedCount, 1)
return nil
},
},
}
// copy with src tag
gotDesc, err := oras.Copy(ctx, src, ref, dst, "", copyOpts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("Copy() = %v, want %v", gotDesc, root)
}
// copy with new tag
gotDesc, err = oras.Copy(ctx, src, ref, dst, newTag, copyOpts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("Copy() = %v, want %v", gotDesc, root)
}
// verify contents
for i, desc := range descs {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify src tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, root)
}
// verify new tag
gotDesc, err = dst.Resolve(ctx, newTag)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, root)
}
// verify invocation of onCopySkipped()
if got, want := skippedCount, int64(1); got != want {
t.Errorf("count(OnCopySkipped()) = %v, want %v", got, want)
}
}
func TestCopyGraph_FullCopy(t *testing.T) {
src := cas.NewMemory()
dst := cas.NewMemory()
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
generateManifest := func(config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageManifest, manifestJSON)
}
generateIndex := func(manifests ...ocispec.Descriptor) {
index := ocispec.Index{
Manifests: manifests,
}
indexJSON, err := json.Marshal(index)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageIndex, indexJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte("config")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
appendBlob(ocispec.MediaTypeImageLayer, []byte("hello")) // Blob 3
generateManifest(descs[0], descs[1:3]...) // Blob 4
generateManifest(descs[0], descs[3]) // Blob 5
generateManifest(descs[0], descs[1:4]...) // Blob 6
generateIndex(descs[4:6]...) // Blob 7
generateIndex(descs[6]) // Blob 8
generateIndex() // Blob 9
generateIndex(descs[7:10]...) // Blob 10
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
// test copy graph
srcTracker := &storageTracker{Storage: src}
dstTracker := &storageTracker{Storage: dst}
root := descs[len(descs)-1]
if err := oras.CopyGraph(ctx, srcTracker, dstTracker, root, oras.CopyGraphOptions{}); err != nil {
t.Fatalf("CopyGraph() error = %v, wantErr %v", err, false)
}
// verify contents
contents := dst.Map()
if got, want := len(contents), len(blobs); got != want {
t.Errorf("len(dst) = %v, wantErr %v", got, want)
}
for i := range blobs {
got, err := content.FetchAll(ctx, dst, descs[i])
if err != nil {
t.Errorf("content[%d] error = %v, wantErr %v", i, err, false)
continue
}
if want := blobs[i]; !bytes.Equal(got, want) {
t.Errorf("content[%d] = %v, want %v", i, got, want)
}
}
// verify API counts
if got, want := srcTracker.fetch, int64(len(blobs)); got != want {
t.Errorf("count(src.Fetch()) = %v, want %v", got, want)
}
if got, want := srcTracker.push, int64(0); got != want {
t.Errorf("count(src.Push()) = %v, want %v", got, want)
}
if got, want := srcTracker.exists, int64(0); got != want {
t.Errorf("count(src.Exists()) = %v, want %v", got, want)
}
if got, want := dstTracker.fetch, int64(0); got != want {
t.Errorf("count(dst.Fetch()) = %v, want %v", got, want)
}
if got, want := dstTracker.push, int64(len(blobs)); got != want {
t.Errorf("count(dst.Push()) = %v, want %v", got, want)
}
if got, want := dstTracker.exists, int64(len(blobs)); got != want {
t.Errorf("count(dst.Exists()) = %v, want %v", got, want)
}
}
func TestCopyGraph_PartialCopy(t *testing.T) {
src := cas.NewMemory()
dst := cas.NewMemory()
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
generateManifest := func(config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageManifest, manifestJSON)
}
generateIndex := func(manifests ...ocispec.Descriptor) {
index := ocispec.Index{
Manifests: manifests,
}
indexJSON, err := json.Marshal(index)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageIndex, indexJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte("config")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
generateManifest(descs[0], descs[1:3]...) // Blob 3
appendBlob(ocispec.MediaTypeImageLayer, []byte("hello")) // Blob 4
generateManifest(descs[0], descs[4]) // Blob 5
generateIndex(descs[3], descs[5]) // Blob 6
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
// initial copy
root := descs[3]
if err := oras.CopyGraph(ctx, src, dst, root, oras.CopyGraphOptions{}); err != nil {
t.Fatalf("CopyGraph() error = %v, wantErr %v", err, false)
}
// verify contents
contents := dst.Map()
if got, want := len(contents), len(blobs[:4]); got != want {
t.Fatalf("len(dst) = %v, wantErr %v", got, want)
}
for i := range blobs[:4] {
got, err := content.FetchAll(ctx, dst, descs[i])
if err != nil {
t.Fatalf("content[%d] error = %v, wantErr %v", i, err, false)
}
if want := blobs[i]; !bytes.Equal(got, want) {
t.Fatalf("content[%d] = %v, want %v", i, got, want)
}
}
// test copy
srcTracker := &storageTracker{Storage: src}
dstTracker := &storageTracker{Storage: dst}
root = descs[len(descs)-1]
if err := oras.CopyGraph(ctx, srcTracker, dstTracker, root, oras.CopyGraphOptions{}); err != nil {
t.Fatalf("CopyGraph() error = %v, wantErr %v", err, false)
}
// verify contents
contents = dst.Map()
if got, want := len(contents), len(blobs); got != want {
t.Errorf("len(dst) = %v, wantErr %v", got, want)
}
for i := range blobs {
got, err := content.FetchAll(ctx, dst, descs[i])
if err != nil {
t.Errorf("content[%d] error = %v, wantErr %v", i, err, false)
continue
}
if want := blobs[i]; !bytes.Equal(got, want) {
t.Errorf("content[%d] = %v, want %v", i, got, want)
}
}
// verify API counts
if got, want := srcTracker.fetch, int64(3); got != want {
t.Errorf("count(src.Fetch()) = %v, want %v", got, want)
}
if got, want := srcTracker.push, int64(0); got != want {
t.Errorf("count(src.Push()) = %v, want %v", got, want)
}
if got, want := srcTracker.exists, int64(0); got != want {
t.Errorf("count(src.Exists()) = %v, want %v", got, want)
}
if got, want := dstTracker.fetch, int64(0); got != want {
t.Errorf("count(dst.Fetch()) = %v, want %v", got, want)
}
if got, want := dstTracker.push, int64(3); got != want {
t.Errorf("count(dst.Push()) = %v, want %v", got, want)
}
if got, want := dstTracker.exists, int64(5); got != want {
t.Errorf("count(dst.Exists()) = %v, want %v", got, want)
}
}
func TestCopy_WithOptions(t *testing.T) {
src := memory.New()
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
appendManifest := func(arc, os string, mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
Platform: &ocispec.Platform{
Architecture: arc,
OS: os,
},
})
}
generateManifest := func(arc, os string, config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendManifest(arc, os, ocispec.MediaTypeImageManifest, manifestJSON)
}
generateIndex := func(manifests ...ocispec.Descriptor) {
index := ocispec.Index{
Manifests: manifests,
}
indexJSON, err := json.Marshal(index)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageIndex, indexJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte("config")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
generateManifest("test-arc-1", "test-os-1", descs[0], descs[1:3]...) // Blob 3
appendBlob(ocispec.MediaTypeImageLayer, []byte("hello")) // Blob 4
generateManifest("test-arc-2", "test-os-2", descs[0], descs[4]) // Blob 5
generateIndex(descs[3], descs[5]) // Blob 6
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
root := descs[6]
ref := "foobar"
err := src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
// test copy with media type filter
dst := memory.New()
opts := oras.DefaultCopyOptions
opts.MapRoot = func(ctx context.Context, src content.ReadOnlyStorage, root ocispec.Descriptor) (ocispec.Descriptor, error) {
if root.MediaType == ocispec.MediaTypeImageIndex {
return root, nil
} else {
return ocispec.Descriptor{}, errdef.ErrNotFound
}
}
gotDesc, err := oras.Copy(ctx, src, ref, dst, "", opts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("Copy() = %v, want %v", gotDesc, root)
}
// verify contents
for i, desc := range descs {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, root) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, root)
}
// test copy with platform filter and hooks
dst = memory.New()
preCopyCount := int64(0)
postCopyCount := int64(0)
opts = oras.CopyOptions{
MapRoot: func(ctx context.Context, src content.ReadOnlyStorage, root ocispec.Descriptor) (ocispec.Descriptor, error) {
manifests, err := content.Successors(ctx, src, root)
if err != nil {
return ocispec.Descriptor{}, errdef.ErrNotFound
}
// platform filter
for _, m := range manifests {
if m.Platform.Architecture == "test-arc-2" && m.Platform.OS == "test-os-2" {
return m, nil
}
}
return ocispec.Descriptor{}, errdef.ErrNotFound
},
CopyGraphOptions: oras.CopyGraphOptions{
PreCopy: func(ctx context.Context, desc ocispec.Descriptor) error {
atomic.AddInt64(&preCopyCount, 1)
return nil
},
PostCopy: func(ctx context.Context, desc ocispec.Descriptor) error {
atomic.AddInt64(&postCopyCount, 1)
return nil
},
},
}
wantDesc := descs[5]
gotDesc, err = oras.Copy(ctx, src, ref, dst, "", opts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("Copy() = %v, want %v", gotDesc, wantDesc)
}
// verify contents
for i, desc := range append([]ocispec.Descriptor{descs[0]}, descs[4:6]...) {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, wantDesc)
}
// verify API counts
if got, want := preCopyCount, int64(3); got != want {
t.Errorf("count(PreCopy()) = %v, want %v", got, want)
}
if got, want := postCopyCount, int64(3); got != want {
t.Errorf("count(PostCopy()) = %v, want %v", got, want)
}
// test copy with root filter, but no matching node can be found
dst = memory.New()
opts = oras.CopyOptions{
MapRoot: func(ctx context.Context, src content.ReadOnlyStorage, root ocispec.Descriptor) (ocispec.Descriptor, error) {
if root.MediaType == "test" {
return root, nil
} else {
return ocispec.Descriptor{}, errdef.ErrNotFound
}
},
CopyGraphOptions: oras.DefaultCopyGraphOptions,
}
_, err = oras.Copy(ctx, src, ref, dst, "", opts)
if !errors.Is(err, errdef.ErrNotFound) {
t.Fatalf("Copy() error = %v, wantErr %v", err, errdef.ErrNotFound)
}
// test copy with MaxMetadataBytes = 1
dst = memory.New()
opts = oras.CopyOptions{
CopyGraphOptions: oras.CopyGraphOptions{
MaxMetadataBytes: 1,
},
}
if _, err := oras.Copy(ctx, src, ref, dst, "", opts); !errors.Is(err, errdef.ErrSizeExceedsLimit) {
t.Fatalf("CopyGraph() error = %v, wantErr %v", err, errdef.ErrSizeExceedsLimit)
}
}
func TestCopy_WithTargetPlatformOptions(t *testing.T) {
src := memory.New()
arc_1 := "test-arc-1"
os_1 := "test-os-1"
variant_1 := "v1"
arc_2 := "test-arc-2"
os_2 := "test-os-2"
variant_2 := "v2"
// generate test content
var blobs [][]byte
var descs []ocispec.Descriptor
appendBlob := func(mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
})
}
appendManifest := func(arc, os, variant string, mediaType string, blob []byte) {
blobs = append(blobs, blob)
descs = append(descs, ocispec.Descriptor{
MediaType: mediaType,
Digest: digest.FromBytes(blob),
Size: int64(len(blob)),
Platform: &ocispec.Platform{
Architecture: arc,
OS: os,
Variant: variant,
},
})
}
generateManifest := func(arc, os, variant string, config ocispec.Descriptor, layers ...ocispec.Descriptor) {
manifest := ocispec.Manifest{
Config: config,
Layers: layers,
}
manifestJSON, err := json.Marshal(manifest)
if err != nil {
t.Fatal(err)
}
appendManifest(arc, os, variant, ocispec.MediaTypeImageManifest, manifestJSON)
}
generateIndex := func(manifests ...ocispec.Descriptor) {
index := ocispec.Index{
Manifests: manifests,
}
indexJSON, err := json.Marshal(index)
if err != nil {
t.Fatal(err)
}
appendBlob(ocispec.MediaTypeImageIndex, indexJSON)
}
appendBlob(ocispec.MediaTypeImageConfig, []byte(`{"mediaType":"application/vnd.oci.image.config.v1+json",
"created":"2022-07-29T08:13:55Z",
"author":"test author",
"architecture":"test-arc-1",
"os":"test-os-1",
"variant":"v1"}`)) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo")) // Blob 1
appendBlob(ocispec.MediaTypeImageLayer, []byte("bar")) // Blob 2
generateManifest(arc_1, os_1, variant_1, descs[0], descs[1:3]...) // Blob 3
appendBlob(ocispec.MediaTypeImageLayer, []byte("hello1")) // Blob 4
generateManifest(arc_2, os_2, variant_1, descs[0], descs[4]) // Blob 5
appendBlob(ocispec.MediaTypeImageLayer, []byte("hello2")) // Blob 6
generateManifest(arc_1, os_1, variant_2, descs[0], descs[6]) // Blob 7
generateIndex(descs[3], descs[5], descs[7]) // Blob 8
ctx := context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
root := descs[8]
ref := "foobar"
err := src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
// test copy with platform filter for the image index
dst := memory.New()
opts := oras.CopyOptions{}
targetPlatform := ocispec.Platform{
Architecture: arc_2,
OS: os_2,
}
opts.WithTargetPlatform(&targetPlatform)
wantDesc := descs[5]
gotDesc, err := oras.Copy(ctx, src, ref, dst, "", opts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("Copy() = %v, want %v", gotDesc, wantDesc)
}
// verify contents
for i, desc := range append([]ocispec.Descriptor{descs[0]}, descs[4:6]...) {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, wantDesc)
}
// test copy with platform filter for the image index, and multiple
// manifests match the required platform. Should return the first matching
// entry.
dst = memory.New()
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_1,
}
opts = oras.CopyOptions{}
opts.WithTargetPlatform(&targetPlatform)
wantDesc = descs[3]
gotDesc, err = oras.Copy(ctx, src, ref, dst, "", opts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("Copy() = %v, want %v", gotDesc, wantDesc)
}
// verify contents
for i, desc := range append([]ocispec.Descriptor{descs[0]}, descs[1:3]...) {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, wantDesc)
}
// test copy with platform filter and existing MapRoot func for the image
// index, but there is no matching node. Should return not found error.
dst = memory.New()
opts = oras.CopyOptions{
MapRoot: func(ctx context.Context, src content.ReadOnlyStorage, root ocispec.Descriptor) (ocispec.Descriptor, error) {
if root.MediaType == ocispec.MediaTypeImageIndex {
return root, nil
} else {
return ocispec.Descriptor{}, errdef.ErrNotFound
}
},
}
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_2,
}
opts.WithTargetPlatform(&targetPlatform)
_, err = oras.Copy(ctx, src, ref, dst, "", opts)
expected := fmt.Sprintf("%s: %v: no matching manifest was found in the manifest list", root.Digest, errdef.ErrNotFound)
if err.Error() != expected {
t.Fatalf("Copy() error = %v, wantErr %v", err, expected)
}
// test copy with platform filter for the manifest
dst = memory.New()
opts = oras.CopyOptions{}
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_1,
}
opts.WithTargetPlatform(&targetPlatform)
root = descs[7]
err = src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
wantDesc = descs[7]
gotDesc, err = oras.Copy(ctx, src, ref, dst, "", opts)
if err != nil {
t.Fatalf("Copy() error = %v, wantErr %v", err, false)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("Copy() = %v, want %v", gotDesc, wantDesc)
}
// verify contents
for i, desc := range append([]ocispec.Descriptor{descs[0]}, descs[6]) {
exists, err := dst.Exists(ctx, desc)
if err != nil {
t.Fatalf("dst.Exists(%d) error = %v", i, err)
}
if !exists {
t.Errorf("dst.Exists(%d) = %v, want %v", i, exists, true)
}
}
// verify tag
gotDesc, err = dst.Resolve(ctx, ref)
if err != nil {
t.Fatal("dst.Resolve() error =", err)
}
if !reflect.DeepEqual(gotDesc, wantDesc) {
t.Errorf("dst.Resolve() = %v, want %v", gotDesc, wantDesc)
}
// test copy with platform filter for the manifest, but there is no matching
// node. Should return not found error.
dst = memory.New()
opts = oras.CopyOptions{}
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_1,
Variant: variant_2,
}
opts.WithTargetPlatform(&targetPlatform)
_, err = oras.Copy(ctx, src, ref, dst, "", opts)
expected = fmt.Sprintf("%s: %v: platform in manifest does not match target platform", root.Digest, errdef.ErrNotFound)
if err.Error() != expected {
t.Fatalf("Copy() error = %v, wantErr %v", err, expected)
}
// test copy with platform filter, but the node's media type is not
// supported. Should return unsupported error
dst = memory.New()
opts = oras.CopyOptions{}
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_1,
}
opts.WithTargetPlatform(&targetPlatform)
root = descs[1]
err = src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
_, err = oras.Copy(ctx, src, ref, dst, "", opts)
if !errors.Is(err, errdef.ErrUnsupported) {
t.Fatalf("Copy() error = %v, wantErr %v", err, errdef.ErrUnsupported)
}
// generate incorrect test content
blobs = nil
descs = nil
appendBlob(docker.MediaTypeConfig, []byte(`{"mediaType":"application/vnd.oci.image.config.v1+json",
"created":"2022-07-29T08:13:55Z",
"author":"test author 1",
"architecture":"test-arc-1",
"os":"test-os-1",
"variant":"v1"}`)) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo1")) // Blob 1
generateManifest(arc_1, os_1, variant_1, descs[0], descs[1]) // Blob 2
generateIndex(descs[2]) // Blob 3
ctx = context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}
}
dst = memory.New()
opts = oras.CopyOptions{}
targetPlatform = ocispec.Platform{
Architecture: arc_1,
OS: os_1,
}
opts.WithTargetPlatform(&targetPlatform)
// test copy with platform filter for the manifest, but the manifest is
// invalid by having docker mediaType config in the manifest and oci
// mediaType in the image config. Should return error.
root = descs[2]
err = src.Tag(ctx, root, ref)
if err != nil {
t.Fatal("fail to tag root node", err)
}
_, err = oras.Copy(ctx, src, ref, dst, "", opts)
expected = fmt.Sprintf("fail to recognize platform from unknown config %s: expect %s", docker.MediaTypeConfig, ocispec.MediaTypeImageConfig)
if err.Error() != expected {
t.Fatalf("Copy() error = %v, wantErr %v", err, expected)
}
// generate test content with null config blob
blobs = nil
descs = nil
appendBlob(ocispec.MediaTypeImageConfig, []byte("null")) // Blob 0
appendBlob(ocispec.MediaTypeImageLayer, []byte("foo2")) // Blob 1
generateManifest(arc_1, os_1, variant_1, descs[0], descs[1]) // Blob 2
generateIndex(descs[2]) // Blob 3
ctx = context.Background()
for i := range blobs {
err := src.Push(ctx, descs[i], bytes.NewReader(blobs[i]))
if err != nil {
t.Fatalf("failed to push test content to src: %d: %v", i, err)
}