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
|
// Copyright 2022 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.
#ifndef INCLUDED_SRC_BUILDTOOL_COMPATIBILITY_COMPATIBILITY_HPP
#define INCLUDED_SRC_BUILDTOOL_COMPATIBILITY_COMPATIBILITY_HPP
#include <shared_mutex>
#include <unordered_map>
#include <utility>
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/logging/logger.hpp"
class Compatibility {
using git_hash = std::string;
using compat_hash = std::string;
using git_repo = std::string;
using GitToCompatibleMap = std::unordered_map<git_hash, compat_hash>;
using CompatibleToGitMap =
std::unordered_map<compat_hash, std::pair<git_hash, git_repo>>;
public:
[[nodiscard]] static auto Instance() noexcept -> Compatibility& {
static Compatibility instance{};
return instance;
}
[[nodiscard]] static auto IsCompatible() noexcept -> bool {
return Instance().compatible_;
}
static void SetCompatible(bool value = true) noexcept {
Instance().compatible_ = value;
auto const hasher_type = value ? HashFunction::JustHash::Compatible
: HashFunction::JustHash::Native;
HashFunction::SetHashType(hasher_type);
}
[[nodiscard]] static auto RegisterGitEntry(std::string const& git_hash,
std::string const& data,
std::string const& repo)
-> compat_hash {
{
auto& git_to_compatible = Instance().git_to_compatible_;
std::shared_lock lock_{Instance().mutex_};
auto it = git_to_compatible.find(git_hash);
if (it != git_to_compatible.end()) {
return it->second;
}
}
// This is only used in compatible mode. Therefore, the default hash
// function produces the compatible hash.
auto compatible_hash = HashFunction::ComputeHash(data).HexString();
std::unique_lock lock_{Instance().mutex_};
Instance().git_to_compatible_[git_hash] = compatible_hash;
Instance().compatible_to_git_[compatible_hash] = {git_hash, repo};
return compatible_hash;
}
[[nodiscard]] static auto GetGitEntry(std::string const& compatible_hash)
-> std::optional<std::pair<git_hash const&, git_repo const&>> {
auto const& compatible_to_git = Instance().compatible_to_git_;
std::shared_lock lock_{Instance().mutex_};
auto it = compatible_to_git.find(compatible_hash);
if (it != compatible_to_git.end()) {
return it->second;
}
Logger::Log(
LogLevel::Warning,
fmt::format("Unable to get the git-sha1 code associated to {}",
compatible_hash));
return std::nullopt;
}
private:
GitToCompatibleMap git_to_compatible_{};
CompatibleToGitMap compatible_to_git_{};
bool compatible_{false};
std::shared_mutex mutex_;
};
#endif // INCLUDED_SRC_BUILDTOOL_COMPATIBILITY_COMPATIBILITY_HPP
|
