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Test storing OCI image manifests and indexes with/without a media type

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OCI Image manifests and indexes are supported both with and without
an embeded MediaType (the field is reserved according to the spec).
Test storing and retrieving both types from the manifest store.

Signed-off-by: Owen W. Taylor <otaylor@fishsoup.net>
This commit is contained in:
Owen W. Taylor 2018-03-15 16:04:58 -04:00
parent 60d9c5dfad
commit 132abc6de5
2 changed files with 176 additions and 7 deletions
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30
manifest/ocischema/builder.go
View file

@ -4,12 +4,13 @@ import (
"context"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest"
"github.com/opencontainers/go-digest"
"github.com/opencontainers/image-spec/specs-go/v1"
)
// builder is a type for constructing manifests.
type builder struct {
type Builder struct {
// bs is a BlobService used to publish the configuration blob.
bs distribution.BlobService
@ -22,26 +23,43 @@ type builder struct {
// Annotations contains arbitrary metadata relating to the targeted content.
annotations map[string]string
// For testing purposes
mediaType string
}
// 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, and annotations.
func NewManifestBuilder(bs distribution.BlobService, configJSON []byte, annotations map[string]string) distribution.ManifestBuilder {
mb := &builder{
mb := &Builder{
bs: bs,
configJSON: make([]byte, len(configJSON)),
annotations: annotations,
mediaType: v1.MediaTypeImageManifest,
}
copy(mb.configJSON, configJSON)
return mb
}
// For testing purposes, we want to be able to create an OCI image with
// either an MediaType either empty, or with the OCI image value
func (mb *Builder) SetMediaType(mediaType string) {
if mediaType != "" && mediaType != v1.MediaTypeImageManifest {
panic("Invalid media type for OCI image manifest")
}
mb.mediaType = mediaType
}
// Build produces a final manifest from the given references.
func (mb *builder) Build(ctx context.Context) (distribution.Manifest, error) {
func (mb *Builder) Build(ctx context.Context) (distribution.Manifest, error) {
m := Manifest{
Versioned: SchemaVersion,
Versioned: manifest.Versioned{
SchemaVersion: 2,
MediaType: mb.mediaType,
},
Layers: make([]distribution.Descriptor, len(mb.layers)),
Annotations: mb.annotations,
}
@ -76,12 +94,12 @@ func (mb *builder) Build(ctx context.Context) (distribution.Manifest, error) {
}
// AppendReference adds a reference to the current ManifestBuilder.
func (mb *builder) AppendReference(d distribution.Describable) error {
func (mb *Builder) AppendReference(d distribution.Describable) error {
mb.layers = append(mb.layers, d.Descriptor())
return nil
}
// References returns the current references added to this builder.
func (mb *builder) References() []distribution.Descriptor {
func (mb *Builder) References() []distribution.Descriptor {
return mb.layers
}