mirror of https://github.com/perkeep/perkeep.git
112 lines
2.5 KiB
Go
112 lines
2.5 KiB
Go
/*
|
|
Copyright 2013 Google Inc.
|
|
|
|
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 (
|
|
"encoding/json"
|
|
"strings"
|
|
|
|
"camlistore.org/pkg/blobref"
|
|
)
|
|
|
|
// AnyBlob represents any type of schema blob.
|
|
type AnyBlob interface {
|
|
Blob() *Blob
|
|
}
|
|
|
|
// Buildable returns a Builder from a base.
|
|
type Buildable interface {
|
|
Builder() *Builder
|
|
}
|
|
|
|
// A Blob represents a Camlistore schema blob.
|
|
// It is immutable.
|
|
type Blob struct {
|
|
br *blobref.BlobRef
|
|
str string
|
|
|
|
ss *Superset
|
|
}
|
|
|
|
// Type returns the blob's "camliType" field.
|
|
func (b *Blob) Type() string { return b.ss.Type }
|
|
|
|
// BlobRef returns the schema blob's blobref.
|
|
func (b *Blob) BlobRef() *blobref.BlobRef { return b.br }
|
|
|
|
// JSON returns the JSON bytes of the schema blob.
|
|
func (b *Blob) JSON() string { return b.str }
|
|
|
|
func (b *Blob) Blob() *Blob { return b }
|
|
|
|
func (b *Blob) Builder() *Builder {
|
|
return b.jsonMap().Builder()
|
|
}
|
|
|
|
func (b *Blob) jsonMap() Map {
|
|
var m map[string]interface{}
|
|
err := json.Unmarshal([]byte(b.str), &m)
|
|
if err != nil {
|
|
panic("failed to decode previously-thought-valid Blob's JSON: " + err.Error())
|
|
}
|
|
return m
|
|
}
|
|
|
|
// MapToBlob is a transitional function to ease the migration from schema.Map to *schema.Blob.
|
|
// TODO(bradfitz): delete.
|
|
func MapToBlob(m Map) *Blob {
|
|
json, err := m.JSON()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
ss, err := ParseSuperset(strings.NewReader(json))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
h := blobref.NewHash()
|
|
h.Write([]byte(json))
|
|
return &Blob{
|
|
str: json,
|
|
ss: ss,
|
|
br: blobref.FromHash(h),
|
|
}
|
|
}
|
|
|
|
// A Claim is a Blob that is signed.
|
|
type Claim struct {
|
|
b *Blob
|
|
}
|
|
|
|
// Blob returns the claim's Blob.
|
|
func (c Claim) Blob() *Blob { return c.b }
|
|
|
|
// A Builder builds a JSON blob.
|
|
// After mutating the Builder, call Blob to get the built blob.
|
|
type Builder struct {
|
|
m map[string]interface{}
|
|
}
|
|
|
|
// Blob builds the Blob. The builder continues to be usable after a call to Build.
|
|
func (b *Builder) Blob() *Blob {
|
|
return MapToBlob(b.m)
|
|
}
|
|
|
|
func (b *Builder) SetSigner(signer *blobref.BlobRef) *Builder {
|
|
b.m["camliSigner"] = signer.String()
|
|
return b
|
|
}
|