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// Copyright 2025 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_REMOTE_BAZEL_BAZEL_CAPABILITIES_CLIENT_HPP
#define INCLUDED_SRC_BUILDTOOL_EXECUTION_API_REMOTE_BAZEL_BAZEL_CAPABILITIES_CLIENT_HPP
#include <cstddef>
#include <cstdint>
#include <functional>
#include <limits>
#include <memory>
#include <shared_mutex>
#include <string>
#include <unordered_map>
#include "build/bazel/remote/execution/v2/remote_execution.grpc.pb.h"
#include "gsl/gsl"
#include "src/buildtool/auth/authentication.hpp"
#include "src/buildtool/common/remote/port.hpp"
#include "src/buildtool/common/remote/retry_config.hpp"
#include "src/buildtool/execution_api/common/message_limits.hpp"
#include "src/buildtool/logging/logger.hpp"
namespace bazel_re = build::bazel::remote::execution::v2;
struct Capabilities final {
using Ptr = gsl::not_null<std::shared_ptr<Capabilities>>;
struct Version {
std::int32_t major{};
std::int32_t minor{};
std::int32_t patch{};
[[nodiscard]] auto operator<=>(Version const& other) const noexcept =
default;
};
static constexpr Version kMinVersion{.major = 0, .minor = 0, .patch = 0};
static constexpr Version kMaxVersion{
.major = std::numeric_limits<std::int32_t>::max(),
.minor = std::numeric_limits<std::int32_t>::max(),
.patch = std::numeric_limits<std::int32_t>::max()};
std::size_t const MaxBatchTransferSize = MessageLimits::kMaxGrpcLength;
Version const low_api_version = kMinVersion;
Version const high_api_version = kMaxVersion;
};
class BazelCapabilitiesClient final {
public:
explicit BazelCapabilitiesClient(
std::string const& server,
Port port,
gsl::not_null<Auth const*> const& auth,
gsl::not_null<RetryConfig const*> const& retry_config) noexcept;
/// \brief Obtain server capabilities for instance_name.
/// \return Capabilities corresponding to the given instance_name. Requested
/// capabilities are cached if a valid response is received from the server.
/// Otherwise, the default capabilities are returned and the caching step is
/// skipped to try again next time.
[[nodiscard]] auto GetCapabilities(
std::string const& instance_name) const noexcept -> Capabilities::Ptr;
private:
RetryConfig const& retry_config_;
std::unique_ptr<bazel_re::Capabilities::Stub> stub_;
Logger logger_{"RemoteCapabilitiesClient"};
mutable std::shared_mutex lock_;
mutable std::unordered_map<std::string, Capabilities::Ptr> capabilities_;
};
#endif // INCLUDED_SRC_BUILDTOOL_EXECUTION_API_REMOTE_BAZEL_BAZEL_CAPABILITIES_CLIENT_HPP
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