1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "virtual_cloud_data_translate.h"
16
17 #include "parcel.h"
18
19 namespace DistributedDB {
CalculateLens(const Asset & asset)20 uint32_t CalculateLens(const Asset &asset)
21 {
22 uint32_t len = 0;
23 len += Parcel::GetUInt32Len();
24 len += Parcel::GetStringLen(asset.name);
25 len += Parcel::GetStringLen(asset.uri);
26 len += Parcel::GetStringLen(asset.modifyTime);
27 len += Parcel::GetStringLen(asset.createTime);
28 len += Parcel::GetStringLen(asset.size);
29 len += Parcel::GetStringLen(asset.hash);
30 len += Parcel::GetInt64Len();
31 len += Parcel::GetInt64Len();
32 return len;
33 }
34
CalculateLens(const Assets & assets)35 uint32_t CalculateLens(const Assets &assets)
36 {
37 uint32_t len = 0;
38 for (const auto &asset : assets) {
39 len += CalculateLens(asset);
40 }
41 return len;
42 }
43
WriteAsset(Parcel & parcel,const Asset & asset)44 void WriteAsset(Parcel &parcel, const Asset &asset)
45 {
46 parcel.WriteUInt32(asset.version);
47 parcel.WriteString(asset.name);
48 parcel.WriteString(asset.uri);
49 parcel.WriteString(asset.modifyTime);
50 parcel.WriteString(asset.createTime);
51 parcel.WriteString(asset.size);
52 parcel.WriteString(asset.hash);
53 parcel.WriteUInt32(asset.status);
54 parcel.WriteInt64(asset.timestamp);
55 }
56
ReadAsset(Parcel & parcel,Asset & asset)57 void ReadAsset(Parcel &parcel, Asset &asset)
58 {
59 parcel.ReadUInt32(asset.version);
60 parcel.ReadString(asset.name);
61 parcel.ReadString(asset.uri);
62 parcel.ReadString(asset.modifyTime);
63 parcel.ReadString(asset.createTime);
64 parcel.ReadString(asset.size);
65 parcel.ReadString(asset.hash);
66 parcel.ReadUInt32(asset.status);
67 parcel.ReadInt64(asset.timestamp);
68 }
69
AssetToBlob(const Asset & asset)70 std::vector<uint8_t> VirtualCloudDataTranslate::AssetToBlob(const Asset &asset)
71 {
72 uint32_t srcLen = CalculateLens(asset);
73 std::vector<uint8_t> result(srcLen, 0);
74 Parcel parcel(result.data(), result.size());
75 WriteAsset(parcel, asset);
76 return result;
77 }
78
AssetsToBlob(const Assets & assets)79 std::vector<uint8_t> VirtualCloudDataTranslate::AssetsToBlob(const Assets &assets)
80 {
81 // first is vector size
82 uint32_t srcLen = 0;
83 srcLen += Parcel::GetUInt32Len();
84 srcLen += CalculateLens(assets);
85 std::vector<uint8_t> result(srcLen, 0);
86 Parcel parcel(result.data(), result.size());
87 parcel.WriteUInt32(assets.size());
88 for (const auto &asset : assets) {
89 WriteAsset(parcel, asset);
90 }
91 return result;
92 }
BlobToAsset(const std::vector<uint8_t> & blob)93 Asset VirtualCloudDataTranslate::BlobToAsset(const std::vector<uint8_t> &blob)
94 {
95 Parcel parcel(const_cast<uint8_t *>(blob.data()), blob.size());
96 Asset asset;
97 ReadAsset(parcel, asset);
98 return asset;
99 }
BlobToAssets(const std::vector<uint8_t> & blob)100 Assets VirtualCloudDataTranslate::BlobToAssets(const std::vector<uint8_t> &blob)
101 {
102 std::vector<uint8_t> inputData = blob;
103 Parcel parcel(inputData.data(), inputData.size());
104 uint32_t count = 0;
105 parcel.ReadUInt32(count);
106 Assets assets;
107 assets.resize(count);
108 for (uint32_t i = 0; i < count; i++) {
109 ReadAsset(parcel, assets[i]);
110 }
111 return assets;
112 }
113 }