| // Copyright 2023 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package build |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| "os" |
| "path/filepath" |
| ) |
| |
| type Blob struct { |
| // Merkle is the merkle associated with a blob. |
| Merkle string `json:"merkle"` |
| } |
| |
| type DeliveryBlobConfig struct { |
| Type int `json:"type"` |
| } |
| |
| func GetDeliveryBlobType(configPath string) (*int, error) { |
| data, err := os.ReadFile(configPath) |
| if err != nil { |
| if os.IsNotExist(err) { |
| return nil, nil |
| } |
| return nil, fmt.Errorf("failed to read delivery blob config: %w", err) |
| } |
| |
| var config DeliveryBlobConfig |
| err = json.Unmarshal(data, &config) |
| if err != nil { |
| return nil, fmt.Errorf("unable to unmarshal delivery blob config: %w", err) |
| } |
| return &config.Type, nil |
| } |
| |
| // Get the dir relative to repo that store blobs, if delivery blobs are enabled, |
| // this will return the sub directory that contains delivery blobs with the |
| // correct type. |
| func GetBlobsDir(deliveryBlobConfigPath string) (string, error) { |
| blobType, err := GetDeliveryBlobType(deliveryBlobConfigPath) |
| if err != nil { |
| return "", fmt.Errorf("unable to get delivery blob type: %w", err) |
| } |
| blobsDir := "blobs" |
| if blobType == nil { |
| return blobsDir, nil |
| } |
| return filepath.Join(blobsDir, fmt.Sprint(*blobType)), nil |
| } |