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// 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.
#ifndef INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
#include <filesystem>
#include <functional>
#include <optional>
#include <string>
#include "gsl/gsl"
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/common/bazel_types.hpp"
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/buildtool/storage/local_cas.hpp"
#include "src/utils/cpp/expected.hpp"
class LocalCasReader final {
public:
using DumpCallback = std::function<bool(std::string const&)>;
explicit LocalCasReader(
gsl::not_null<LocalCAS<true> const*> const& cas) noexcept
: cas_(*cas) {}
[[nodiscard]] auto ReadDirectory(ArtifactDigest const& digest)
const noexcept -> std::optional<bazel_re::Directory>;
[[nodiscard]] auto MakeTree(ArtifactDigest const& root) const noexcept
-> std::optional<bazel_re::Tree>;
[[nodiscard]] auto ReadGitTree(ArtifactDigest const& digest) const noexcept
-> std::optional<GitRepo::tree_entries_t>;
[[nodiscard]] auto DumpRawTree(Artifact::ObjectInfo const& info,
DumpCallback const& dumper) const noexcept
-> bool;
[[nodiscard]] auto DumpBlob(Artifact::ObjectInfo const& info,
DumpCallback const& dumper) const noexcept
-> bool;
[[nodiscard]] auto StageBlobTo(
Artifact::ObjectInfo const& info,
std::filesystem::path const& output) const noexcept -> bool;
[[nodiscard]] auto IsNativeProtocol() const noexcept -> bool;
/// \brief Check recursively if Directory contains any invalid entries
/// (i.e., upwards symlinks).
/// \returns True if Directory is ok, false if at least on upwards symlink
/// has been found, error message on other failures.
[[nodiscard]] auto IsDirectoryValid(ArtifactDigest const& digest)
const noexcept -> expected<bool, std::string>;
private:
LocalCAS<true> const& cas_;
[[nodiscard]] static auto DumpRaw(std::filesystem::path const& path,
DumpCallback const& dumper) noexcept
-> bool;
};
#endif // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_CAS_READER_HPP
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