2ff77c00ba
Add schema2 manifest implementation. Add a schema2 builder that creates a schema2 manifest from descriptors and a configuration. It will add the configuration to the blob store if necessary. Rename the original schema1 manifest builder to ReferenceBuilder, and create a ConfigBuilder variant that can build a schema1 manifest from an image configuration and set of descriptors. This will be used to translate schema2 manifests to the schema1 format for backward compatibliity, by adding the descriptors from the existing schema2 manifest to the schema1 builder. It will also be used by engine-side push code to create schema1 manifests from the new-style image configration, when necessary to push a schema1 manifest. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
106 lines
3.2 KiB
Go
106 lines
3.2 KiB
Go
package schema2
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"reflect"
|
|
"testing"
|
|
|
|
"github.com/docker/distribution"
|
|
)
|
|
|
|
var expectedManifestSerialization = []byte(`{
|
|
"schemaVersion": 2,
|
|
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
|
|
"config": {
|
|
"mediaType": "application/vnd.docker.container.image.v1+json",
|
|
"size": 985,
|
|
"digest": "sha256:1a9ec845ee94c202b2d5da74a24f0ed2058318bfa9879fa541efaecba272e86b"
|
|
},
|
|
"layers": [
|
|
{
|
|
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
|
|
"size": 153263,
|
|
"digest": "sha256:62d8908bee94c202b2d35224a221aaa2058318bfa9879fa541efaecba272331b"
|
|
}
|
|
]
|
|
}`)
|
|
|
|
func TestManifest(t *testing.T) {
|
|
manifest := Manifest{
|
|
Versioned: SchemaVersion,
|
|
MediaType: MediaTypeManifest,
|
|
Config: distribution.Descriptor{
|
|
Digest: "sha256:1a9ec845ee94c202b2d5da74a24f0ed2058318bfa9879fa541efaecba272e86b",
|
|
Size: 985,
|
|
MediaType: MediaTypeConfig,
|
|
},
|
|
Layers: []distribution.Descriptor{
|
|
{
|
|
Digest: "sha256:62d8908bee94c202b2d35224a221aaa2058318bfa9879fa541efaecba272331b",
|
|
Size: 153263,
|
|
MediaType: MediaTypeLayer,
|
|
},
|
|
},
|
|
}
|
|
|
|
deserialized, err := FromStruct(manifest)
|
|
if err != nil {
|
|
t.Fatalf("error creating DeserializedManifest: %v", err)
|
|
}
|
|
|
|
mediaType, canonical, err := deserialized.Payload()
|
|
|
|
if mediaType != MediaTypeManifest {
|
|
t.Fatalf("unexpected media type: %s", mediaType)
|
|
}
|
|
|
|
// Check that the canonical field is the same as json.MarshalIndent
|
|
// with these parameters.
|
|
p, err := json.MarshalIndent(&manifest, "", " ")
|
|
if err != nil {
|
|
t.Fatalf("error marshaling manifest: %v", err)
|
|
}
|
|
if !bytes.Equal(p, canonical) {
|
|
t.Fatalf("manifest bytes not equal: %q != %q", string(canonical), string(p))
|
|
}
|
|
|
|
// Check that canonical field matches expected value.
|
|
if !bytes.Equal(expectedManifestSerialization, canonical) {
|
|
t.Fatalf("manifest bytes not equal: %q != %q", string(canonical), string(expectedManifestSerialization))
|
|
}
|
|
|
|
var unmarshalled DeserializedManifest
|
|
if err := json.Unmarshal(deserialized.canonical, &unmarshalled); err != nil {
|
|
t.Fatalf("error unmarshaling manifest: %v", err)
|
|
}
|
|
|
|
if !reflect.DeepEqual(&unmarshalled, deserialized) {
|
|
t.Fatalf("manifests are different after unmarshaling: %v != %v", unmarshalled, *deserialized)
|
|
}
|
|
|
|
target := deserialized.Target()
|
|
if target.Digest != "sha256:1a9ec845ee94c202b2d5da74a24f0ed2058318bfa9879fa541efaecba272e86b" {
|
|
t.Fatalf("unexpected digest in target: %s", target.Digest.String())
|
|
}
|
|
if target.MediaType != MediaTypeConfig {
|
|
t.Fatalf("unexpected media type in target: %s", target.MediaType)
|
|
}
|
|
if target.Size != 985 {
|
|
t.Fatalf("unexpected size in target: %d", target.Size)
|
|
}
|
|
|
|
references := deserialized.References()
|
|
if len(references) != 1 {
|
|
t.Fatalf("unexpected number of references: %d", len(references))
|
|
}
|
|
if references[0].Digest != "sha256:62d8908bee94c202b2d35224a221aaa2058318bfa9879fa541efaecba272331b" {
|
|
t.Fatalf("unexpected digest in reference: %s", references[0].Digest.String())
|
|
}
|
|
if references[0].MediaType != MediaTypeLayer {
|
|
t.Fatalf("unexpected media type in reference: %s", references[0].MediaType)
|
|
}
|
|
if references[0].Size != 153263 {
|
|
t.Fatalf("unexpected size in reference: %d", references[0].Size)
|
|
}
|
|
}
|