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// 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_COMMON_REPOSITORY_CONFIG_HPP
#define INCLUDED_SRC_BUILDTOOL_COMMON_REPOSITORY_CONFIG_HPP
#include <filesystem>
#include <functional>
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <unordered_map>
#include <utility> // std::move
#include "gsl/gsl"
#include "nlohmann/json.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/file_system/file_root.hpp"
#include "src/buildtool/file_system/git_cas.hpp"
#include "src/buildtool/file_system/git_tree.hpp"
#include "src/buildtool/file_system/precomputed_root.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/multithreading/atomic_value.hpp"
#include "src/buildtool/storage/config.hpp"
#include "src/buildtool/storage/storage.hpp"
class RepositoryConfig {
public:
struct RepositoryInfo { // NOLINT(bugprone-exception-escape)
FileRoot workspace_root;
FileRoot target_root{workspace_root};
FileRoot rule_root{target_root};
FileRoot expression_root{rule_root};
std::map<std::string, std::string> name_mapping{};
std::string target_file_name{"TARGETS"};
std::string rule_file_name{"RULES"};
std::string expression_file_name{"EXPRESSIONS"};
// Return base content description without bindings if all roots are
// content fixed or return std::nullopt otherwise.
[[nodiscard]] auto BaseContentDescription() const
-> std::optional<nlohmann::json>;
};
void SetInfo(std::string const& repo, RepositoryInfo&& info) {
repos_[repo].base_desc = info.BaseContentDescription();
repos_[repo].info = std::move(info);
repos_[repo].key.Reset();
duplicates_.Reset();
}
[[nodiscard]] auto SetGitCAS(
std::filesystem::path const& repo_path,
gsl::not_null<StorageConfig const*> const& storage_config,
LogLevel log_level = LogLevel::Warning) noexcept -> bool {
storage_config_ = storage_config;
git_cas_ = GitCAS::Open(repo_path, log_level);
return static_cast<bool>(git_cas_);
}
/// \brief Replace all entries of the precomputed root with an exact root.
/// \param root Root to be replaced.
/// \param value Root to be used as a replacement.
void SetPrecomputedRoot(PrecomputedRoot const& root, FileRoot const& value);
[[nodiscard]] auto Info(std::string const& repo) const noexcept
-> RepositoryInfo const* {
if (auto const* data = Data(repo)) {
return &data->info;
}
return nullptr;
}
[[nodiscard]] auto ReadBlobFromGitCAS(
std::string const& hex_id,
bool is_symlink,
LogLevel log_failure = LogLevel::Warning) const noexcept
-> std::optional<std::string> {
return git_cas_ ? git_cas_->ReadObject(hex_id,
/*is_hex_id=*/true,
/*as_valid_symlink=*/is_symlink,
log_failure)
: std::nullopt;
}
[[nodiscard]] auto ReadTreeFromGitCAS(
std::string const& hex_id) const noexcept -> std::optional<GitTree>;
[[nodiscard]] auto WorkspaceRoot(std::string const& repo) const noexcept
-> FileRoot const* {
return Get<FileRoot>(
repo, [](auto const& info) { return &info.workspace_root; });
}
[[nodiscard]] auto TargetRoot(std::string const& repo) const noexcept
-> FileRoot const* {
return Get<FileRoot>(
repo, [](auto const& info) { return &info.target_root; });
}
[[nodiscard]] auto RuleRoot(std::string const& repo) const
-> FileRoot const* {
return Get<FileRoot>(repo,
[](auto const& info) { return &info.rule_root; });
}
[[nodiscard]] auto ExpressionRoot(std::string const& repo) const noexcept
-> FileRoot const* {
return Get<FileRoot>(
repo, [](auto const& info) { return &info.expression_root; });
}
[[nodiscard]] auto GlobalName(std::string const& repo,
std::string const& local_name) const noexcept
-> std::string const* {
return Get<std::string>(
repo, [&local_name](auto const& info) -> std::string const* {
auto it = info.name_mapping.find(local_name);
if (it != info.name_mapping.end()) {
return &it->second;
}
return nullptr;
});
}
[[nodiscard]] auto TargetFileName(std::string const& repo) const noexcept
-> std::string const* {
return Get<std::string>(
repo, [](auto const& info) { return &info.target_file_name; });
}
[[nodiscard]] auto RuleFileName(std::string const& repo) const noexcept
-> std::string const* {
return Get<std::string>(
repo, [](auto const& info) { return &info.rule_file_name; });
}
[[nodiscard]] auto ExpressionFileName(
std::string const& repo) const noexcept -> std::string const* {
return Get<std::string>(
repo, [](auto const& info) { return &info.expression_file_name; });
}
// Obtain repository's cache key if the repository is content fixed or
// std::nullopt otherwise.
[[nodiscard]] auto RepositoryKey(Storage const& storage,
std::string const& repo) const noexcept
-> std::optional<ArtifactDigest>;
// used for testing
void Reset() {
repos_.clear();
git_cas_.reset();
duplicates_.Reset();
}
private:
using duplicates_t = std::unordered_map<std::string, std::string>;
// All data we store per repository.
struct RepositoryData {
// Info structure (roots, file names, bindings)
RepositoryInfo info{};
// Base description if content-fixed
std::optional<nlohmann::json> base_desc;
// Cache key if content-fixed
AtomicValue<std::optional<ArtifactDigest>> key;
};
std::unordered_map<std::string, RepositoryData> repos_;
GitCASPtr git_cas_;
StorageConfig const* storage_config_ = nullptr;
AtomicValue<duplicates_t> duplicates_;
template <class T>
[[nodiscard]] auto Get(std::string const& repo,
std::function<T const*(RepositoryInfo const&)> const&
getter) const noexcept -> T const* {
try {
if (auto const* info = Info(repo)) {
return getter(*info);
}
} catch (...) {
return nullptr;
};
return nullptr;
}
[[nodiscard]] auto Data(std::string const& repo) const noexcept
-> RepositoryData const* {
auto it = repos_.find(repo);
if (it != repos_.end()) {
return &it->second;
}
return nullptr;
}
[[nodiscard]] auto DeduplicateRepo(std::string const& repo,
HashFunction hash_function) const
-> std::string;
[[nodiscard]] auto BuildGraphForRepository(std::string const& repo,
HashFunction hash_function) const
-> std::optional<nlohmann::json>;
[[nodiscard]] auto AddToGraphAndGetId(
gsl::not_null<nlohmann::json*> const& graph,
gsl::not_null<int*> const& id_counter,
gsl::not_null<std::unordered_map<std::string, std::string>*> const&
repo_ids,
std::string const& repo,
HashFunction hash_function) const -> std::optional<std::string>;
};
#endif // INCLUDED_SRC_BUILDTOOL_COMMON_REPOSITORY_CONFIG_HPP
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