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// Copyright 2015 The appc Authors
//
// 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 acirenderer
import (
"bytes"
"fmt"
"hash"
"io"
"io/ioutil"
"os"
"github.com/appc/spec/aci"
"github.com/appc/spec/schema"
"github.com/appc/spec/schema/types"
)
const (
hashPrefix = "sha512-"
)
type TestStoreAci struct {
data []byte
key string
ImageManifest *schema.ImageManifest
}
type TestStore struct {
acis map[string]*TestStoreAci
}
func NewTestStore() *TestStore {
return &TestStore{acis: make(map[string]*TestStoreAci)}
}
func (ts *TestStore) WriteACI(path string) (string, error) {
data, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
imageID := types.NewHashSHA512(data)
rs, err := os.Open(path)
if err != nil {
return "", err
}
defer rs.Close()
im, err := aci.ManifestFromImage(rs)
if err != nil {
return "", fmt.Errorf("error retrieving ImageManifest: %v", err)
}
key := imageID.String()
ts.acis[key] = &TestStoreAci{data: data, key: key, ImageManifest: im}
return key, nil
}
func (ts *TestStore) GetImageManifest(key string) (*schema.ImageManifest, error) {
aci, ok := ts.acis[key]
if !ok {
return nil, fmt.Errorf("aci with key: %s not found", key)
}
return aci.ImageManifest, nil
}
func (ts *TestStore) GetACI(name types.ACIdentifier, labels types.Labels) (string, error) {
for _, aci := range ts.acis {
if aci.ImageManifest.Name.String() == name.String() {
return aci.key, nil
}
}
return "", fmt.Errorf("aci not found")
}
func (ts *TestStore) ReadStream(key string) (io.ReadCloser, error) {
aci, ok := ts.acis[key]
if !ok {
return nil, fmt.Errorf("stream for key: %s not found", key)
}
return ioutil.NopCloser(bytes.NewReader(aci.data)), nil
}
func (ts *TestStore) ResolveKey(key string) (string, error) {
return key, nil
}
// HashToKey takes a hash.Hash (which currently _MUST_ represent a full SHA512),
// calculates its sum, and returns a string which should be used as the key to
// store the data matching the hash.
func (ts *TestStore) HashToKey(h hash.Hash) string {
s := h.Sum(nil)
return fmt.Sprintf("%s%x", hashPrefix, s)
}
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