Program Listing for File observable_registry.h
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <memory>
#include <mutex>
#include <vector>
#include "opentelemetry/common/timestamp.h"
#include "opentelemetry/metrics/async_instruments.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace sdk
{
namespace metrics
{
struct ObservableCallbackRecord
{
opentelemetry::metrics::ObservableCallbackPtr callback;
void *state;
opentelemetry::metrics::ObservableInstrument *instrument;
};
class ObservableRegistry
{
public:
void AddCallback(opentelemetry::metrics::ObservableCallbackPtr callback,
void *state,
opentelemetry::metrics::ObservableInstrument *instrument);
void RemoveCallback(opentelemetry::metrics::ObservableCallbackPtr callback,
void *state,
opentelemetry::metrics::ObservableInstrument *instrument);
void Observe(opentelemetry::common::SystemTimestamp collection_ts);
private:
std::vector<std::unique_ptr<ObservableCallbackRecord>> callbacks_;
std::mutex callbacks_m_;
};
} // namespace metrics
} // namespace sdk
OPENTELEMETRY_END_NAMESPACE