chromium/third_party/grpc/src/src/cpp/server/backend_metric_recorder.h

//
//
// Copyright 2023 gRPC authors.
//
// 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 GRPC_SRC_CPP_SERVER_BACKEND_METRIC_RECORDER_H
#define GRPC_SRC_CPP_SERVER_BACKEND_METRIC_RECORDER_H

#include <stdint.h>

#include <atomic>
#include <map>

#include "absl/base/thread_annotations.h"
#include "absl/strings/string_view.h"

#include <grpcpp/ext/call_metric_recorder.h>
#include <grpcpp/ext/server_metric_recorder.h>
#include <grpcpp/impl/sync.h>
#include <grpcpp/support/string_ref.h>

#include "src/core/ext/filters/backend_metrics/backend_metric_provider.h"
#include "src/core/ext/filters/client_channel/lb_policy/backend_metric_data.h"

namespace grpc {
namespace experimental {

// Backend metrics and an associated update sequence number.
struct ServerMetricRecorder::BackendMetricDataState { … };

}  // namespace experimental

class BackendMetricState : public grpc_core::BackendMetricProvider,
                           public experimental::CallMetricRecorder { … };

}  // namespace grpc

#endif  // GRPC_SRC_CPP_SERVER_BACKEND_METRIC_RECORDER_H