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// Copyright 2016 The Linux Foundation
//
// 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 schema
import (
"embed"
"net/http"
v1 "github.com/opencontainers/image-spec/specs-go/v1"
)
// Media types for the OCI image formats
const (
ValidatorMediaTypeDescriptor Validator = v1.MediaTypeDescriptor
ValidatorMediaTypeLayoutHeader Validator = v1.MediaTypeLayoutHeader
ValidatorMediaTypeManifest Validator = v1.MediaTypeImageManifest
ValidatorMediaTypeImageIndex Validator = v1.MediaTypeImageIndex
ValidatorMediaTypeImageConfig Validator = v1.MediaTypeImageConfig
ValidatorMediaTypeImageLayer Validator = v1.MediaTypeImageLayer
)
var (
// specFS stores the embedded http.FileSystem having the OCI JSON schema files in root "/".
//go:embed *.json
specFS embed.FS
// specsOrig maps OCI schema media types to schema files.
specs = map[Validator]string{
ValidatorMediaTypeDescriptor: "content-descriptor.json",
ValidatorMediaTypeLayoutHeader: "image-layout-schema.json",
ValidatorMediaTypeManifest: "image-manifest-schema.json",
ValidatorMediaTypeImageIndex: "image-index-schema.json",
ValidatorMediaTypeImageConfig: "config-schema.json",
}
// specURLs lists the various URLs a given spec may be known by.
// This is generated from the "id" value in each spec and relative ref values they contain.
specURLs = map[string][]string{
"config-schema.json": {
"https://opencontainers.org/schema/image/config",
},
"content-descriptor.json": {
"https://opencontainers.org/schema/descriptor",
"https://opencontainers.org/schema/image/content-descriptor.json",
},
"defs-descriptor.json": {
"https://opencontainers.org/schema/image/descriptor/mediaType",
"https://opencontainers.org/schema/defs-descriptor.json",
"https://opencontainers.org/schema/image/defs-descriptor.json",
},
"defs.json": {
"https://opencontainers.org/schema/defs.json",
"https://opencontainers.org/schema/image/defs.json",
"https://opencontainers.org/schema/image/descriptor/defs.json",
},
"image-index-schema.json": {
"https://opencontainers.org/schema/image/index",
},
"image-layout-schema.json": {
"https://opencontainers.org/schema/image/layout",
},
"image-manifest-schema.json": {
"https://opencontainers.org/schema/image/manifest",
},
}
)
// FileSystem returns an in-memory filesystem including the schema files.
// The schema files are located at the root directory.
func FileSystem() http.FileSystem {
return http.FS(specFS)
}
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