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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_STORAGE_TARGET_CACHE_ENTRY_HPP
#define INCLUDED_SRC_BUILDTOOL_STORAGE_TARGET_CACHE_ENTRY_HPP
#include <optional>
#include <set>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include "gsl/gsl"
#include "nlohmann/json.hpp"
#include "src/buildtool/build_engine/analysed_target/analysed_target.hpp"
#include "src/buildtool/build_engine/expression/target_result.hpp"
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/common/artifact_description.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
// Entry for target cache. Created from target, contains TargetResult.
class TargetCacheEntry {
public:
explicit TargetCacheEntry(HashFunction::Type hash_type, nlohmann::json desc)
: hash_type_{hash_type}, desc_(std::move(desc)) {}
// Create the entry from target with replacement artifacts/infos.
// Replacement artifacts must replace all non-known artifacts by known.
[[nodiscard]] static auto FromTarget(
HashFunction::Type hash_type,
AnalysedTargetPtr const& target,
std::unordered_map<ArtifactDescription, Artifact::ObjectInfo> const&
replacements) noexcept -> std::optional<TargetCacheEntry>;
// Create a target-cache entry from a json description.
[[nodiscard]] static auto FromJson(HashFunction::Type hash_type,
nlohmann::json desc) noexcept
-> TargetCacheEntry;
// Obtain TargetResult from cache entry.
[[nodiscard]] auto ToResult() const noexcept -> std::optional<TargetResult>;
// Obtain the implied export targets
[[nodiscard]] auto ToImplied() const noexcept -> std::set<std::string>;
// Obtain the implied export targets hashes as a vector of ObjectInfo,
// excluding the digest corresponding to this entry. As opposed to
// ToImplied, it returns nullopt on exception.
[[nodiscard]] auto ToImpliedIds(std::string const& entry_key_hash)
const noexcept -> std::optional<std::vector<Artifact::ObjectInfo>>;
// Obtain all artifacts from cache entry (all should be known
// artifacts).
[[nodiscard]] auto ToArtifacts(
gsl::not_null<std::vector<Artifact::ObjectInfo>*> const& infos)
const noexcept -> bool;
[[nodiscard]] auto ToJson() const& -> nlohmann::json const& {
return desc_;
}
[[nodiscard]] auto ToJson() && -> nlohmann::json {
return std::move(desc_);
}
private:
HashFunction::Type hash_type_;
nlohmann::json desc_;
};
#endif // INCLUDED_SRC_BUILDTOOL_STORAGE_TARGET_CACHE_ENTRY_HPP
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