backend_metric.h

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//
// Copyright 2019 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_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H
 
#include <grpc/support/port_platform.h>
 
#include <stddef.h>
 
#include "absl/strings/string_view.h"
 
#include "src/core/ext/filters/client_channel/lb_policy/backend_metric_data.h"
 
namespace grpc_core {
 
class BackendMetricAllocatorInterface {
 public:
  virtual ~BackendMetricAllocatorInterface() = default;
 
  virtual BackendMetricData* AllocateBackendMetricData() = 0;
 
  virtual char* AllocateString(size_t size) = 0;
};
 
// Parses the serialized load report and populates out.
// Returns false on error.
const BackendMetricData* ParseBackendMetricData(
    absl::string_view serialized_load_report,
    BackendMetricAllocatorInterface* allocator);
 
}  // namespace grpc_core
 
#endif  // GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_BACKEND_METRIC_H