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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_COMMON_BLOB_TREE_HPP
#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_COMMON_BLOB_TREE_HPP
#include <filesystem>
#include <memory>
#include <optional>
#include <utility>
#include <vector>
#include "gsl/gsl"
#include "src/buildtool/common/artifact_blob.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/execution_api/bazel_msg/directory_tree.hpp"
class BlobTree;
using BlobTreePtr = gsl::not_null<std::shared_ptr<BlobTree>>;
/// \brief Tree-like blob container to enable tree-invariant satisfying blob
/// upload.
class BlobTree {
public:
explicit BlobTree(ArtifactBlob blob, std::vector<BlobTreePtr> nodes)
: blob_{std::move(blob)}, nodes_{std::move(nodes)} {}
[[nodiscard]] auto Blob() const noexcept -> ArtifactBlob { return blob_; }
[[nodiscard]] auto IsTree() const noexcept -> bool {
return blob_.GetDigest().IsTree();
}
/// \brief Create a `BlobTree` from a `DirectoryTree`.
[[nodiscard]] static auto FromDirectoryTree(
DirectoryTreePtr const& tree,
std::filesystem::path const& parent = "") noexcept
-> std::optional<BlobTreePtr>;
[[nodiscard]] auto begin() const noexcept { return nodes_.begin(); }
[[nodiscard]] auto end() const noexcept { return nodes_.end(); }
[[nodiscard]] auto size() const noexcept { return nodes_.size(); }
private:
ArtifactBlob blob_;
std::vector<BlobTreePtr> nodes_;
};
#endif // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_COMMON_BLOB_TREE_HPP
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