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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.
#include "src/buildtool/execution_api/common/tree_reader_utils.hpp"
#include <exception>
#include <unordered_map>
#include <utility>
#include <vector>
#include "google/protobuf/repeated_ptr_field.h"
#include "nlohmann/json.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/common/artifact_digest_factory.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/logging/logger.hpp"
#include "src/utils/cpp/expected.hpp"
#include "src/utils/cpp/hex_string.hpp"
namespace {
[[nodiscard]] auto CreateObjectInfo(HashFunction hash_function,
bazel_re::DirectoryNode const& node)
-> std::optional<Artifact::ObjectInfo> {
auto digest = ArtifactDigestFactory::FromBazel(hash_function.GetType(),
node.digest());
if (not digest) {
return std::nullopt;
}
return Artifact::ObjectInfo{.digest = *std::move(digest),
.type = ObjectType::Tree};
}
[[nodiscard]] auto CreateObjectInfo(HashFunction hash_function,
bazel_re::FileNode const& node)
-> std::optional<Artifact::ObjectInfo> {
auto digest = ArtifactDigestFactory::FromBazel(hash_function.GetType(),
node.digest());
if (not digest) {
return std::nullopt;
}
return Artifact::ObjectInfo{.digest = *std::move(digest),
.type = node.is_executable()
? ObjectType::Executable
: ObjectType::File};
}
[[nodiscard]] auto CreateObjectInfo(HashFunction hash_function,
bazel_re::SymlinkNode const& node)
-> Artifact::ObjectInfo {
return Artifact::ObjectInfo{
.digest = ArtifactDigestFactory::HashDataAs<ObjectType::File>(
hash_function, node.target()),
.type = ObjectType::Symlink};
}
template <typename TTree>
[[nodiscard]] auto TreeToString(TTree const& entries)
-> std::optional<std::string> {
auto json = nlohmann::json::object();
TreeReaderUtils::InfoStoreFunc store_infos =
[&json](std::filesystem::path const& path,
Artifact::ObjectInfo&& info) -> bool {
static constexpr bool kSizeUnknown =
std::is_same_v<TTree, GitRepo::tree_entries_t>;
json[path.string()] = std::move(info).ToString(kSizeUnknown);
return true;
};
if (TreeReaderUtils::ReadObjectInfos(entries, store_infos)) {
return json.dump(2) + "\n";
}
Logger::Log(LogLevel::Error, "reading object infos from Directory failed");
return std::nullopt;
}
} // namespace
auto TreeReaderUtils::ReadObjectInfos(bazel_re::Directory const& dir,
InfoStoreFunc const& store_info) noexcept
-> bool {
// SHA256 is used since bazel types are processed here.
HashFunction const hash_function{HashFunction::Type::PlainSHA256};
try {
for (auto const& f : dir.files()) {
auto info = CreateObjectInfo(hash_function, f);
if (not info or not store_info(f.name(), *std::move(info))) {
return false;
}
}
for (auto const& l : dir.symlinks()) {
if (not store_info(l.name(), CreateObjectInfo(hash_function, l))) {
return false;
}
}
for (auto const& d : dir.directories()) {
auto info = CreateObjectInfo(hash_function, d);
if (not info or not store_info(d.name(), *std::move(info))) {
return false;
}
}
} catch (std::exception const& ex) {
Logger::Log(LogLevel::Error,
"reading object infos from Directory failed with:\n{}",
ex.what());
return false;
}
return true;
}
auto TreeReaderUtils::ReadObjectInfos(GitRepo::tree_entries_t const& entries,
InfoStoreFunc const& store_info) noexcept
-> bool {
try {
for (auto const& [raw_id, es] : entries) {
auto const hex_id = ToHexString(raw_id);
for (auto const& entry : es) {
auto digest =
ArtifactDigestFactory::Create(HashFunction::Type::GitSHA1,
hex_id,
/*size is unknown*/ 0,
IsTreeObject(entry.type));
if (not digest or
not store_info(
entry.name,
Artifact::ObjectInfo{.digest = *std::move(digest),
.type = entry.type})) {
return false;
}
}
}
} catch (std::exception const& ex) {
Logger::Log(LogLevel::Error,
"reading object infos from Git tree failed with:\n{}",
ex.what());
return false;
}
return true;
}
auto TreeReaderUtils::DirectoryToString(bazel_re::Directory const& dir) noexcept
-> std::optional<std::string> {
try {
return TreeToString(dir);
} catch (const std::exception& e) {
Logger::Log(LogLevel::Error,
"An error occurred while reading bazel:re::Directory:\n",
e.what());
return std::nullopt;
}
}
auto TreeReaderUtils::GitTreeToString(
GitRepo::tree_entries_t const& entries) noexcept
-> std::optional<std::string> {
try {
return TreeToString(entries);
} catch (const std::exception& e) {
Logger::Log(LogLevel::Error,
"An error occurred while reading git tree:\n{}",
e.what());
return std::nullopt;
}
}
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