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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_EXECUTION_API_LOCAL_LOCAL_STORAGE_HPP
#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_STORAGE_HPP
#include <optional>
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/execution_api/bazel_msg/bazel_msg_factory.hpp"
#include "src/buildtool/execution_api/common/execution_common.hpp"
#include "src/buildtool/execution_api/local/local_ac.hpp"
#include "src/buildtool/execution_api/local/local_cas.hpp"
class LocalStorage {
public:
/// \brief Store blob from file path with x-bit determined from file system.
template <bool kOwner = false>
[[nodiscard]] auto StoreBlob(std::filesystem::path const& file_path)
const noexcept -> std::optional<bazel_re::Digest> {
return StoreBlob<kOwner>(file_path,
FileSystemManager::IsExecutable(file_path));
}
/// \brief Store blob from file path with x-bit.
template <bool kOwner = false>
[[nodiscard]] auto StoreBlob(std::filesystem::path const& file_path,
bool is_executable) const noexcept
-> std::optional<bazel_re::Digest> {
if (is_executable) {
return cas_exec_.StoreBlobFromFile(file_path, kOwner);
}
return cas_file_.StoreBlobFromFile(file_path, kOwner);
}
/// \brief Store blob from bytes with x-bit (default: non-executable).
[[nodiscard]] auto StoreBlob(std::string const& bytes,
bool is_executable = false) const noexcept
-> std::optional<bazel_re::Digest> {
return is_executable ? cas_exec_.StoreBlobFromBytes(bytes)
: cas_file_.StoreBlobFromBytes(bytes);
}
[[nodiscard]] auto StoreTree(std::string const& bytes) const noexcept
-> std::optional<bazel_re::Digest> {
return cas_tree_.StoreBlobFromBytes(bytes);
}
/// \brief Obtain blob path from digest with x-bit.
/// NOLINTNEXTLINE(misc-no-recursion)
[[nodiscard]] auto BlobPath(bazel_re::Digest const& digest,
bool is_executable) const noexcept
-> std::optional<std::filesystem::path> {
auto const path = is_executable ? cas_exec_.BlobPath(digest)
: cas_file_.BlobPath(digest);
return path ? path : TrySyncBlob(digest, is_executable);
}
[[nodiscard]] auto TreePath(bazel_re::Digest const& digest) const noexcept
-> std::optional<std::filesystem::path> {
return cas_tree_.BlobPath(digest);
}
[[nodiscard]] auto StoreActionResult(
bazel_re::Digest const& action_id,
bazel_re::ActionResult const& result) const noexcept -> bool {
return ac_.StoreResult(action_id, result);
}
[[nodiscard]] auto CachedActionResult(bazel_re::Digest const& action_id)
const noexcept -> std::optional<bazel_re::ActionResult> {
return ac_.CachedResult(action_id);
}
/// \brief Traverses a tree recursively and retrieves object infos of all
/// found blobs (leafs). Tree objects are not added to the result list, but
/// converted to a path name.
/// \param tree_digest Digest of the tree.
/// \param parent Local parent path.
/// \returns Pair of vectors, first containing filesystem paths, second
/// containing object infos.
[[nodiscard]] auto RecursivelyReadTreeLeafs(
bazel_re::Digest const& tree_digest,
std::filesystem::path const& parent) const noexcept
-> std::optional<std::pair<std::vector<std::filesystem::path>,
std::vector<Artifact::ObjectInfo>>>;
/// \brief Reads the flat content of a tree and returns object infos of all
/// its direct entries (trees and blobs).
/// \param tree_digest Digest of the tree.
/// \param parent Local parent path.
/// \returns Pair of vectors, first containing filesystem paths, second
/// containing object infos.
[[nodiscard]] auto ReadDirectTreeEntries(
bazel_re::Digest const& tree_digest,
std::filesystem::path const& parent) const noexcept
-> std::optional<std::pair<std::vector<std::filesystem::path>,
std::vector<Artifact::ObjectInfo>>>;
[[nodiscard]] auto DumpToStream(Artifact::ObjectInfo const& info,
gsl::not_null<FILE*> const& stream,
bool raw_tree) const noexcept -> bool;
private:
LocalCAS<ObjectType::File> cas_file_{};
LocalCAS<ObjectType::Executable> cas_exec_{};
LocalCAS<ObjectType::Tree> cas_tree_{};
LocalAC ac_{&cas_file_};
/// \brief Try to sync blob between file CAS and executable CAS.
/// \param digest Blob digest.
/// \param to_executable Sync direction.
/// \returns Path to blob in target CAS.
/// NOLINTNEXTLINE(misc-no-recursion)
[[nodiscard]] auto TrySyncBlob(bazel_re::Digest const& digest,
bool to_executable) const noexcept
-> std::optional<std::filesystem::path> {
std::optional<std::filesystem::path> const src_blob{
to_executable ? cas_file_.BlobPath(digest)
: cas_exec_.BlobPath(digest)};
if (src_blob and StoreBlob(*src_blob, to_executable)) {
return BlobPath(digest, to_executable);
}
return std::nullopt;
}
[[nodiscard]] auto ReadObjectInfosRecursively(
BazelMsgFactory::InfoStoreFunc const& store_info,
std::filesystem::path const& parent,
bazel_re::Digest const& digest) const noexcept -> bool;
};
#endif // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_LOCAL_LOCAL_STORAGE_HPP
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