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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_BUILD_ENGINE_TARGET_MAP_TARGET_CACHE_HPP
#define INCLUDED_SRC_BUILDTOOL_BUILD_ENGINE_TARGET_MAP_TARGET_CACHE_HPP
#include <filesystem>
#include <functional>
#include <optional>
#include <string>
#include <utility>
#include <gsl-lite/gsl-lite.hpp>
#include <nlohmann/json.hpp>
#include "src/buildtool/build_engine/target_map/target_cache_entry.hpp"
#include "src/buildtool/build_engine/target_map/target_cache_key.hpp"
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/execution_api/local/local_cas.hpp"
#include "src/buildtool/file_system/file_storage.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/buildtool/logging/logger.hpp"
#ifndef BOOTSTRAP_BUILD_TOOL
#include "src/buildtool/execution_api/common/execution_api.hpp"
#endif
class TargetCache {
public:
TargetCache() = default;
TargetCache(TargetCache const&) = delete;
TargetCache(TargetCache&&) = delete;
auto operator=(TargetCache const&) -> TargetCache& = delete;
auto operator=(TargetCache&&) -> TargetCache& = delete;
~TargetCache() noexcept = default;
[[nodiscard]] static auto Instance() -> TargetCache& {
static TargetCache instance;
return instance;
}
// Store new key entry pair in the target cache.
[[nodiscard]] auto Store(TargetCacheKey const& key,
TargetCacheEntry const& value) const noexcept
-> bool;
// Read existing entry and object info for given key from the target cache.
[[nodiscard]] auto Read(TargetCacheKey const& key) const noexcept
-> std::optional<std::pair<TargetCacheEntry, Artifact::ObjectInfo>>;
#ifndef BOOTSTRAP_BUILD_TOOL
auto SetLocalApi(gsl::not_null<IExecutionApi*> const& api) noexcept
-> void {
local_api_ = api;
};
auto SetRemoteApi(gsl::not_null<IExecutionApi*> const& api) noexcept
-> void {
remote_api_ = api;
};
#endif
private:
Logger logger_{"TargetCache"};
FileStorage<ObjectType::File,
StoreMode::LastWins,
/*kSetEpochTime=*/false>
file_store_{ComputeCacheDir()};
#ifndef BOOTSTRAP_BUILD_TOOL
IExecutionApi* local_api_{};
IExecutionApi* remote_api_{};
#endif
[[nodiscard]] auto DownloadKnownArtifacts(
TargetCacheEntry const& value) const noexcept -> bool;
[[nodiscard]] static auto CAS() noexcept -> LocalCAS<ObjectType::File>& {
return LocalCAS<ObjectType::File>::Instance();
}
[[nodiscard]] static auto ComputeCacheDir() -> std::filesystem::path;
[[nodiscard]] static auto ExecutionBackendId() -> std::string;
};
namespace std {
template <>
struct hash<TargetCacheKey> {
[[nodiscard]] auto operator()(TargetCacheKey const& k) const {
return std::hash<Artifact::ObjectInfo>{}(k.Id());
}
};
} // namespace std
#endif // INCLUDED_SRC_BUILDTOOL_BUILD_ENGINE_TARGET_MAP_TARGET_CACHE_HPP
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