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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.
#include "src/buildtool/execution_api/common/blob_tree.hpp"
#include <functional>
#include <string>
#include <unordered_map>
#include <utility>
#include <variant>
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/utils/cpp/expected.hpp"
#include "src/utils/cpp/hex_string.hpp"
auto BlobTree::FromDirectoryTree(DirectoryTreePtr const& tree,
std::filesystem::path const& parent) noexcept
-> std::optional<BlobTreePtr> {
GitRepo::tree_entries_t entries;
std::vector<BlobTreePtr> nodes;
try {
entries.reserve(tree->size());
for (auto const& [name, node] : *tree) {
if (std::holds_alternative<DirectoryTreePtr>(node)) {
auto const& dir = std::get<DirectoryTreePtr>(node);
auto blob_tree = FromDirectoryTree(dir, parent / name);
if (not blob_tree) {
return std::nullopt;
}
auto raw_id =
FromHexString((*blob_tree)->blob_.GetDigest().hash());
if (not raw_id) {
return std::nullopt;
}
entries[std::move(*raw_id)].emplace_back(name,
ObjectType::Tree);
// Only add tree objects to the blob tree to be uploaded.
nodes.emplace_back((*blob_tree));
}
else {
auto const& artifact = std::get<Artifact const*>(node);
auto const& object_info = artifact->Info();
if (not object_info) {
return std::nullopt;
}
auto raw_id = FromHexString(object_info->digest.hash());
if (not raw_id) {
return std::nullopt;
}
entries[std::move(*raw_id)].emplace_back(name,
object_info->type);
}
}
if (auto git_tree = GitRepo::CreateShallowTree(entries)) {
auto blob = ArtifactBlob::FromMemory(
HashFunction{HashFunction::Type::GitSHA1},
ObjectType::Tree,
std::move(git_tree)->second);
if (blob.has_value()) {
return std::make_shared<BlobTree>(*std::move(blob),
std::move(nodes));
}
}
} catch (...) {
return std::nullopt;
}
return std::nullopt;
}
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