includes/opentelemetry/sdk/metrics/async_instruments.h

Go to the documentation of this file.

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
 
#pragma once
 
#include <memory>
 
#include "opentelemetry/metrics/async_instruments.h"
#include "opentelemetry/sdk/metrics/instruments.h"
#include "opentelemetry/sdk/metrics/state/metric_storage.h"
#include "opentelemetry/sdk/metrics/state/observable_registry.h"
#include "opentelemetry/version.h"
 
OPENTELEMETRY_BEGIN_NAMESPACE
namespace sdk
{
namespace metrics
{
 
class ObservableInstrument : public opentelemetry::metrics::ObservableInstrument
{
public:
  ObservableInstrument(InstrumentDescriptor instrument_descriptor,
                       std::unique_ptr<AsyncWritableMetricStorage> storage,
                       std::shared_ptr<ObservableRegistry> observable_registry);
  ~ObservableInstrument() override;
 
  void AddCallback(opentelemetry::metrics::ObservableCallbackPtr callback,
                   void *state) noexcept override;
 
  void RemoveCallback(opentelemetry::metrics::ObservableCallbackPtr callback,
                      void *state) noexcept override;
 
  const InstrumentDescriptor &GetInstrumentDescriptor();
 
  AsyncWritableMetricStorage *GetMetricStorage();
 
private:
  InstrumentDescriptor instrument_descriptor_;
  std::unique_ptr<AsyncWritableMetricStorage> storage_;
  std::shared_ptr<ObservableRegistry> observable_registry_;
};
}  // namespace metrics
}  // namespace sdk
OPENTELEMETRY_END_NAMESPACE