Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
integration/save: Add tests checking OCI archive output
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com> (cherry picked from commit 364316c) Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
- Loading branch information
Showing
4 changed files
with
321 additions
and
26 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package testutils | ||
|
|
||
| import ( | ||
| "io" | ||
|
|
||
| "github.com/docker/docker/pkg/archive" | ||
| "github.com/opencontainers/go-digest" | ||
| ) | ||
|
|
||
| // UncompressedTarDigest returns the canonical digest of the uncompressed tar stream. | ||
| func UncompressedTarDigest(compressedTar io.Reader) (digest.Digest, error) { | ||
| rd, err := archive.DecompressStream(compressedTar) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| defer rd.Close() | ||
|
|
||
| digester := digest.Canonical.Digester() | ||
| if _, err := io.Copy(digester.Hash(), rd); err != nil { | ||
| return "", err | ||
| } | ||
| return digester.Digest(), nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,184 @@ | ||
| package specialimage | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "io" | ||
| "os" | ||
| "path/filepath" | ||
|
|
||
| "github.com/containerd/containerd/platforms" | ||
| "github.com/docker/docker/pkg/archive" | ||
| "github.com/google/uuid" | ||
| "github.com/opencontainers/go-digest" | ||
| "github.com/opencontainers/image-spec/specs-go" | ||
| ocispec "github.com/opencontainers/image-spec/specs-go/v1" | ||
| ) | ||
|
|
||
| func fileArchive(dir string, name string, content []byte) (io.ReadCloser, error) { | ||
| tmp, err := os.MkdirTemp("", "") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if err := os.WriteFile(filepath.Join(tmp, name), content, 0o644); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return archive.Tar(tmp, archive.Uncompressed) | ||
| } | ||
|
|
||
| func writeBlob(dir string, mt string, rd io.Reader) (_ ocispec.Descriptor, outErr error) { | ||
| digester := digest.Canonical.Digester() | ||
| hashTee := io.TeeReader(rd, digester.Hash()) | ||
|
|
||
| blobsPath := filepath.Join(dir, "blobs", "sha256") | ||
| if err := os.MkdirAll(blobsPath, 0o755); err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| tmpPath := filepath.Join(blobsPath, uuid.New().String()) | ||
| file, err := os.Create(tmpPath) | ||
| if err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| defer func() { | ||
| if outErr != nil { | ||
| file.Close() | ||
| os.Remove(tmpPath) | ||
| } | ||
| }() | ||
|
|
||
| if _, err := io.Copy(file, hashTee); err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| digest := digester.Digest() | ||
|
|
||
| stat, err := os.Stat(tmpPath) | ||
| if err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| file.Close() | ||
| if err := os.Rename(tmpPath, filepath.Join(blobsPath, digest.Encoded())); err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| return ocispec.Descriptor{ | ||
| MediaType: mt, | ||
| Digest: digest, | ||
| Size: stat.Size(), | ||
| }, nil | ||
| } | ||
|
|
||
| func writeLayerWithOneFile(dir string, filename string, content []byte) (ocispec.Descriptor, error) { | ||
| rd, err := fileArchive(dir, filename, content) | ||
| if err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| return writeBlob(dir, ocispec.MediaTypeImageLayer, rd) | ||
| } | ||
|
|
||
| func writeJsonBlob(dir string, mt string, obj any) (ocispec.Descriptor, error) { | ||
| b, err := json.Marshal(obj) | ||
| if err != nil { | ||
| return ocispec.Descriptor{}, err | ||
| } | ||
|
|
||
| return writeBlob(dir, mt, bytes.NewReader(b)) | ||
| } | ||
|
|
||
| func writeJson(obj any, path string) error { | ||
| b, err := json.Marshal(obj) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return os.WriteFile(path, b, 0o644) | ||
| } | ||
|
|
||
| type manifestItem struct { | ||
| Config string | ||
| RepoTags []string | ||
| Layers []string | ||
| } | ||
|
|
||
| func MultiLayer(dir string) error { | ||
| layer1Desc, err := writeLayerWithOneFile(dir, "foo", []byte("1")) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| layer2Desc, err := writeLayerWithOneFile(dir, "bar", []byte("2")) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| layer3Desc, err := writeLayerWithOneFile(dir, "hello", []byte("world")) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| configDesc, err := writeJsonBlob(dir, ocispec.MediaTypeImageConfig, ocispec.Image{ | ||
| Platform: platforms.DefaultSpec(), | ||
| Config: ocispec.ImageConfig{ | ||
| Env: []string{"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"}, | ||
| }, | ||
| RootFS: ocispec.RootFS{ | ||
| Type: "layers", | ||
| DiffIDs: []digest.Digest{layer1Desc.Digest, layer2Desc.Digest, layer3Desc.Digest}, | ||
| }, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| manifestDesc, err := writeJsonBlob(dir, ocispec.MediaTypeImageManifest, ocispec.Manifest{ | ||
| MediaType: ocispec.MediaTypeImageManifest, | ||
| Config: configDesc, | ||
| Layers: []ocispec.Descriptor{layer1Desc, layer2Desc, layer3Desc}, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| manifestDesc.Annotations = map[string]string{ | ||
| "io.containerd.image.name": "docker.io/library/multilayer:latest", | ||
| ocispec.AnnotationRefName: "latest", | ||
| } | ||
|
|
||
| if err := writeJson(ocispec.Index{ | ||
| Versioned: specs.Versioned{SchemaVersion: 2}, | ||
| MediaType: ocispec.MediaTypeImageIndex, | ||
| Manifests: []ocispec.Descriptor{manifestDesc}, | ||
| }, filepath.Join(dir, "index.json")); err != nil { | ||
| return err | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| blob := func(desc ocispec.Descriptor) string { | ||
| return "blobs/sha256/" + desc.Digest.Encoded() | ||
| } | ||
|
|
||
| if err := writeJson([]manifestItem{ | ||
| manifestItem{ | ||
| Config: blob(configDesc), | ||
| RepoTags: []string{"multilayer:latest"}, | ||
| Layers: []string{blob(layer1Desc), blob(layer2Desc), blob(layer3Desc)}, | ||
| }, | ||
| }, filepath.Join(dir, "manifest.json")); err != nil { | ||
| return err | ||
| } | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := os.WriteFile(filepath.Join(dir, "oci-layout"), []byte(`{"imageLayoutVersion": "1.0.0"}`), 0o644); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } |