chore: vendor

vendor/github.com/docker/distribution/manifest/schema2/builder.go

@@ -0,0 +1,85 @@
+package schema2
+
+import (
+	"context"
+
+	"github.com/docker/distribution"
+	"github.com/opencontainers/go-digest"
+)
+
+// builder is a type for constructing manifests.
+type builder struct {
+	// bs is a BlobService used to publish the configuration blob.
+	bs distribution.BlobService
+
+	// configMediaType is media type used to describe configuration
+	configMediaType string
+
+	// configJSON references
+	configJSON []byte
+
+	// dependencies is a list of descriptors that gets built by successive
+	// calls to AppendReference. In case of image configuration these are layers.
+	dependencies []distribution.Descriptor
+}
+
+// NewManifestBuilder is used to build new manifests for the current schema
+// version. It takes a BlobService so it can publish the configuration blob
+// as part of the Build process.
+func NewManifestBuilder(bs distribution.BlobService, configMediaType string, configJSON []byte) distribution.ManifestBuilder {
+	mb := &builder{
+		bs:              bs,
+		configMediaType: configMediaType,
+		configJSON:      make([]byte, len(configJSON)),
+	}
+	copy(mb.configJSON, configJSON)
+
+	return mb
+}
+
+// Build produces a final manifest from the given references.
+func (mb *builder) Build(ctx context.Context) (distribution.Manifest, error) {
+	m := Manifest{
+		Versioned: SchemaVersion,
+		Layers:    make([]distribution.Descriptor, len(mb.dependencies)),
+	}
+	copy(m.Layers, mb.dependencies)
+
+	configDigest := digest.FromBytes(mb.configJSON)
+
+	var err error
+	m.Config, err = mb.bs.Stat(ctx, configDigest)
+	switch err {
+	case nil:
+		// Override MediaType, since Put always replaces the specified media
+		// type with application/octet-stream in the descriptor it returns.
+		m.Config.MediaType = mb.configMediaType
+		return FromStruct(m)
+	case distribution.ErrBlobUnknown:
+		// nop
+	default:
+		return nil, err
+	}
+
+	// Add config to the blob store
+	m.Config, err = mb.bs.Put(ctx, mb.configMediaType, mb.configJSON)
+	// Override MediaType, since Put always replaces the specified media
+	// type with application/octet-stream in the descriptor it returns.
+	m.Config.MediaType = mb.configMediaType
+	if err != nil {
+		return nil, err
+	}
+
+	return FromStruct(m)
+}
+
+// AppendReference adds a reference to the current ManifestBuilder.
+func (mb *builder) AppendReference(d distribution.Describable) error {
+	mb.dependencies = append(mb.dependencies, d.Descriptor())
+	return nil
+}
+
+// References returns the current references added to this builder.
+func (mb *builder) References() []distribution.Descriptor {
+	return mb.dependencies
+}

vendor/github.com/docker/distribution/manifest/schema2/manifest.go

@@ -0,0 +1,144 @@
+package schema2
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	"github.com/docker/distribution"
+	"github.com/docker/distribution/manifest"
+	"github.com/opencontainers/go-digest"
+)
+
+const (
+	// MediaTypeManifest specifies the mediaType for the current version.
+	MediaTypeManifest = "application/vnd.docker.distribution.manifest.v2+json"
+
+	// MediaTypeImageConfig specifies the mediaType for the image configuration.
+	MediaTypeImageConfig = "application/vnd.docker.container.image.v1+json"
+
+	// MediaTypePluginConfig specifies the mediaType for plugin configuration.
+	MediaTypePluginConfig = "application/vnd.docker.plugin.v1+json"
+
+	// MediaTypeLayer is the mediaType used for layers referenced by the
+	// manifest.
+	MediaTypeLayer = "application/vnd.docker.image.rootfs.diff.tar.gzip"
+
+	// MediaTypeForeignLayer is the mediaType used for layers that must be
+	// downloaded from foreign URLs.
+	MediaTypeForeignLayer = "application/vnd.docker.image.rootfs.foreign.diff.tar.gzip"
+
+	// MediaTypeUncompressedLayer is the mediaType used for layers which
+	// are not compressed.
+	MediaTypeUncompressedLayer = "application/vnd.docker.image.rootfs.diff.tar"
+)
+
+var (
+	// SchemaVersion provides a pre-initialized version structure for this
+	// packages version of the manifest.
+	SchemaVersion = manifest.Versioned{
+		SchemaVersion: 2,
+		MediaType:     MediaTypeManifest,
+	}
+)
+
+func init() {
+	schema2Func := func(b []byte) (distribution.Manifest, distribution.Descriptor, error) {
+		m := new(DeserializedManifest)
+		err := m.UnmarshalJSON(b)
+		if err != nil {
+			return nil, distribution.Descriptor{}, err
+		}
+
+		dgst := digest.FromBytes(b)
+		return m, distribution.Descriptor{Digest: dgst, Size: int64(len(b)), MediaType: MediaTypeManifest}, err
+	}
+	err := distribution.RegisterManifestSchema(MediaTypeManifest, schema2Func)
+	if err != nil {
+		panic(fmt.Sprintf("Unable to register manifest: %s", err))
+	}
+}
+
+// Manifest defines a schema2 manifest.
+type Manifest struct {
+	manifest.Versioned
+
+	// Config references the image configuration as a blob.
+	Config distribution.Descriptor `json:"config"`
+
+	// Layers lists descriptors for the layers referenced by the
+	// configuration.
+	Layers []distribution.Descriptor `json:"layers"`
+}
+
+// References returns the descriptors of this manifests references.
+func (m Manifest) References() []distribution.Descriptor {
+	references := make([]distribution.Descriptor, 0, 1+len(m.Layers))
+	references = append(references, m.Config)
+	references = append(references, m.Layers...)
+	return references
+}
+
+// Target returns the target of this manifest.
+func (m Manifest) Target() distribution.Descriptor {
+	return m.Config
+}
+
+// DeserializedManifest wraps Manifest with a copy of the original JSON.
+// It satisfies the distribution.Manifest interface.
+type DeserializedManifest struct {
+	Manifest
+
+	// canonical is the canonical byte representation of the Manifest.
+	canonical []byte
+}
+
+// FromStruct takes a Manifest structure, marshals it to JSON, and returns a
+// DeserializedManifest which contains the manifest and its JSON representation.
+func FromStruct(m Manifest) (*DeserializedManifest, error) {
+	var deserialized DeserializedManifest
+	deserialized.Manifest = m
+
+	var err error
+	deserialized.canonical, err = json.MarshalIndent(&m, "", "   ")
+	return &deserialized, err
+}
+
+// UnmarshalJSON populates a new Manifest struct from JSON data.
+func (m *DeserializedManifest) UnmarshalJSON(b []byte) error {
+	m.canonical = make([]byte, len(b))
+	// store manifest in canonical
+	copy(m.canonical, b)
+
+	// Unmarshal canonical JSON into Manifest object
+	var manifest Manifest
+	if err := json.Unmarshal(m.canonical, &manifest); err != nil {
+		return err
+	}
+
+	if manifest.MediaType != MediaTypeManifest {
+		return fmt.Errorf("mediaType in manifest should be '%s' not '%s'",
+			MediaTypeManifest, manifest.MediaType)
+
+	}
+
+	m.Manifest = manifest
+
+	return nil
+}
+
+// MarshalJSON returns the contents of canonical. If canonical is empty,
+// marshals the inner contents.
+func (m *DeserializedManifest) MarshalJSON() ([]byte, error) {
+	if len(m.canonical) > 0 {
+		return m.canonical, nil
+	}
+
+	return nil, errors.New("JSON representation not initialized in DeserializedManifest")
+}
+
+// Payload returns the raw content of the manifest. The contents can be used to
+// calculate the content identifier.
+func (m DeserializedManifest) Payload() (string, []byte, error) {
+	return m.MediaType, m.canonical, nil
+}