1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
//
// 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.
#include "src/buildtool/tree_structure/compute_tree_structure.hpp"
#include <algorithm>
#include <functional>
#include <optional>
#include <unordered_map>
#include <utility>
#include <vector>
#include "fmt/core.h"
#include "src/buildtool/common/artifact_digest_factory.hpp"
#include "src/buildtool/common/protocol_traits.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/file_system/file_system_manager.hpp"
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/utils/cpp/hex_string.hpp"
#include "src/utils/cpp/path.hpp"
auto ComputeTreeStructure(ArtifactDigest const& tree,
Storage const& storage,
TreeStructureCache const& cache) noexcept
-> expected<ArtifactDigest, std::string> {
if (not tree.IsTree() or not ProtocolTraits::IsNative(tree.GetHashType())) {
return unexpected{fmt::format("Not a git tree: {}", tree.hash())};
}
if (auto result = cache.Get(tree)) {
return *std::move(result);
}
auto const tree_path = storage.CAS().TreePath(tree);
if (not tree_path) {
return unexpected{
fmt::format("Failed to read from the storage: {}", tree.hash())};
}
auto const tree_content = FileSystemManager::ReadFile(*tree_path);
if (not tree_content) {
return unexpected{
fmt::format("Failed to read content of: {}", tree.hash())};
}
auto const check_symlinks =
[&storage](std::vector<ArtifactDigest> const& ids) {
return std::all_of(
ids.begin(), ids.end(), [&storage](auto const& id) -> bool {
auto path_to_symlink =
storage.CAS().BlobPath(id, /*is_executable=*/false);
if (not path_to_symlink) {
return false;
}
auto const content =
FileSystemManager::ReadFile(*path_to_symlink);
return content and PathIsNonUpwards(*content);
});
};
auto const entries = GitRepo::ReadTreeData(
*tree_content, tree.hash(), check_symlinks, /*is_hex_id=*/true);
if (not entries) {
return unexpected{
fmt::format("Failed to parse git tree: {}", tree.hash())};
}
GitRepo::tree_entries_t structure_entries{};
for (auto const& [raw_id, es] : *entries) {
for (auto const& entry : es) {
std::optional<ArtifactDigest> structure_digest;
if (IsTreeObject(entry.type)) {
auto const git_digest =
ArtifactDigestFactory::Create(HashFunction::Type::GitSHA1,
ToHexString(raw_id),
/*size is unknown*/ 0,
/*is_tree=*/true);
if (not git_digest) {
return unexpected{git_digest.error()};
}
auto sub_tree =
ComputeTreeStructure(*git_digest, storage, cache);
if (not sub_tree) {
return sub_tree;
}
structure_digest = *std::move(sub_tree);
}
else {
structure_digest = storage.CAS().StoreBlob(
std::string{}, IsExecutableObject(entry.type));
}
if (not structure_digest) {
return unexpected{fmt::format(
"Failed to get structure digest for: {}", raw_id)};
}
if (auto id = FromHexString(structure_digest->hash())) {
structure_entries[*std::move(id)].emplace_back(entry);
}
else {
return unexpected{
fmt::format("Failed to get raw id for {}", raw_id)};
}
}
}
auto const structure_tree = GitRepo::CreateShallowTree(structure_entries);
if (not structure_tree) {
return unexpected{fmt::format(
"Failed to create structured Git tree for {}", tree.hash())};
}
auto tree_structure = storage.CAS().StoreTree(structure_tree->second);
if (not tree_structure) {
return unexpected{fmt::format(
"Failed to add tree structure to the CAS for {}", tree.hash())};
}
if (not cache.Set(tree, *tree_structure)) {
return unexpected{fmt::format(
"Failed to create a tree structure cache entry for\n{} => {}",
tree.hash(),
tree_structure->hash())};
}
return *std::move(tree_structure);
}
|
