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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_EXECUTION_API_COMMON_BYTESTREAM_UTILS_HPP
#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_COMMON_BYTESTREAM_UTILS_HPP
#include <cstddef>
#include <cstdint>
#include <optional>
#include <string>
namespace build::bazel::remote::execution::v2 {
class Digest;
}
namespace bazel_re = build::bazel::remote::execution::v2;
class ByteStreamUtils final {
static constexpr auto* kBlobs = "blobs";
public:
// Chunk size for uploads (default size used by BuildBarn)
static constexpr std::size_t kChunkSize = 64 * 1024;
/// \brief Create a read request for the bytestream service to be
/// transferred over the net. Handles serialization/deserialization on its
/// own. The pattern is:
/// "{instance_name}/{kBlobs}/{digest.hash()}/{digest.size_bytes()}".
/// "instance_name_example/blobs/62183d7a696acf7e69e218efc82c93135f8c85f895/4424712"
class ReadRequest final {
public:
explicit ReadRequest(std::string instance_name,
bazel_re::Digest const& digest) noexcept;
[[nodiscard]] auto ToString() && noexcept -> std::string;
[[nodiscard]] static auto FromString(
std::string const& request) noexcept -> std::optional<ReadRequest>;
[[nodiscard]] auto GetInstanceName() const noexcept
-> std::string const& {
return instance_name_;
}
[[nodiscard]] auto GetDigest() const noexcept -> bazel_re::Digest;
private:
std::string instance_name_;
std::string hash_;
std::int64_t size_ = 0;
ReadRequest() = default;
};
};
#endif // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_COMMON_BYTESTREAM_UTILS_HPP
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