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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_COMMON_ARTIFACT_BLOB_HPP
#define INCLUDED_SRC_BUILDTOOL_COMMON_ARTIFACT_BLOB_HPP
#include <cstddef>
#include <functional>
#include <memory>
#include <string>
#include <utility>
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#include "src/buildtool/file_system/object_type.hpp"
#include "src/utils/cpp/expected.hpp"
#include "src/utils/cpp/incremental_reader.hpp"
class ArtifactBlob final {
public:
explicit ArtifactBlob(ArtifactDigest digest,
std::string content,
bool is_exec) noexcept
: digest_{std::move(digest)},
content_{std::make_shared<std::string const>(std::move(content))},
is_executable_{is_exec} {}
/// \brief Create ArtifactBlob and keep the given content in memory. The
/// content is hashed based on the given hash function and ObjectType.
/// \param hash_function Hash function that must be used for hashing.
/// \param type Type of the content.
/// \param content String to be stored
/// \return Valid ArtifactBlob on success or an error message on failure.
[[nodiscard]] static auto FromMemory(HashFunction hash_function,
ObjectType type,
std::string content) noexcept
-> expected<ArtifactBlob, std::string>;
[[nodiscard]] auto operator==(ArtifactBlob const& other) const noexcept
-> bool {
return digest_ == other.digest_ and
is_executable_ == other.is_executable_;
}
/// \brief Obtain the digest of the content.
[[nodiscard]] auto GetDigest() const noexcept -> ArtifactDigest const& {
return digest_;
}
/// \brief Obtain the size of the content.
[[nodiscard]] auto GetContentSize() const noexcept -> std::size_t {
return digest_.size();
}
/// \brief Read the content from source.
[[nodiscard]] auto ReadContent() const noexcept
-> std::shared_ptr<std::string const>;
/// \brief Create an IncrementalReader that uses this ArtifactBlob's content
/// source.
/// \param chunk_size Size of chunk, must be greater than 0.
/// \return Valid IncrementalReader on success or an error message on
/// failure.
[[nodiscard]] auto ReadIncrementally(std::size_t chunk_size) const& noexcept
-> expected<IncrementalReader, std::string>;
/// \brief Set executable permission.
void SetExecutable(bool is_executable) noexcept {
is_executable_ = is_executable;
}
/// \brief Obtain executable permission.
[[nodiscard]] auto IsExecutable() const noexcept -> bool {
return is_executable_;
}
private:
ArtifactDigest digest_;
std::shared_ptr<std::string const> content_;
bool is_executable_;
explicit ArtifactBlob(ArtifactDigest digest,
std::shared_ptr<std::string const> content,
bool is_executable) noexcept
: digest_{std::move(digest)},
content_{std::move(content)},
is_executable_{is_executable} {}
};
namespace std {
template <>
struct hash<ArtifactBlob> {
[[nodiscard]] auto operator()(ArtifactBlob const& blob) const noexcept
-> std::size_t;
};
} // namespace std
#endif // INCLUDED_SRC_BUILDTOOL_COMMON_ARTIFACT_BLOB_HPP
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