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// Copyright 2018 Google LLC All Rights Reserved.
//
// 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 v1
import (
"encoding/json"
"io"
"github.com/google/go-containerregistry/pkg/v1/types"
)
// Manifest represents the OCI image manifest in a structured way.
type Manifest struct {
SchemaVersion int64 `json:"schemaVersion"`
MediaType types.MediaType `json:"mediaType,omitempty"`
Config Descriptor `json:"config"`
Layers []Descriptor `json:"layers"`
Annotations map[string]string `json:"annotations,omitempty"`
Subject *Descriptor `json:"subject,omitempty"`
}
// IndexManifest represents an OCI image index in a structured way.
type IndexManifest struct {
SchemaVersion int64 `json:"schemaVersion"`
MediaType types.MediaType `json:"mediaType,omitempty"`
Manifests []Descriptor `json:"manifests"`
Annotations map[string]string `json:"annotations,omitempty"`
Subject *Descriptor `json:"subject,omitempty"`
}
// Descriptor holds a reference from the manifest to one of its constituent elements.
type Descriptor struct {
MediaType types.MediaType `json:"mediaType"`
Size int64 `json:"size"`
Digest Hash `json:"digest"`
Data []byte `json:"data,omitempty"`
URLs []string `json:"urls,omitempty"`
Annotations map[string]string `json:"annotations,omitempty"`
Platform *Platform `json:"platform,omitempty"`
ArtifactType string `json:"artifactType,omitempty"`
}
// ParseManifest parses the io.Reader's contents into a Manifest.
func ParseManifest(r io.Reader) (*Manifest, error) {
m := Manifest{}
if err := json.NewDecoder(r).Decode(&m); err != nil {
return nil, err
}
return &m, nil
}
// ParseIndexManifest parses the io.Reader's contents into an IndexManifest.
func ParseIndexManifest(r io.Reader) (*IndexManifest, error) {
im := IndexManifest{}
if err := json.NewDecoder(r).Decode(&im); err != nil {
return nil, err
}
return &im, nil
}
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