Program Listing for File metric_collector.h

↰ Return to documentation for file (/home/docs/checkouts/readthedocs.org/user_builds/opentelemetry-cpp/checkouts/v1.8.1/sdk/include/opentelemetry/sdk/metrics/state/metric_collector.h)

// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

#pragma once

#include "opentelemetry/sdk/metrics/data/metric_data.h"
#include "opentelemetry/sdk/metrics/export/metric_producer.h"

OPENTELEMETRY_BEGIN_NAMESPACE
namespace sdk
{
namespace metrics
{

class MetricReader;
class MeterContext;

class CollectorHandle
{
public:
  CollectorHandle()          = default;
  virtual ~CollectorHandle() = default;

  virtual AggregationTemporality GetAggregationTemporality(
      InstrumentType instrument_type) noexcept = 0;
};

class MetricCollector : public MetricProducer, public CollectorHandle
{
public:
  MetricCollector(MeterContext *context, std::shared_ptr<MetricReader> metric_reader);

  ~MetricCollector() override = default;

  AggregationTemporality GetAggregationTemporality(
      InstrumentType instrument_type) noexcept override;

  bool Collect(nostd::function_ref<bool(ResourceMetrics &metric_data)> callback) noexcept override;

  bool ForceFlush(std::chrono::microseconds timeout = std::chrono::microseconds::max()) noexcept;

  bool Shutdown(std::chrono::microseconds timeout = std::chrono::microseconds::max()) noexcept;

private:
  MeterContext *meter_context_;
  std::shared_ptr<MetricReader> metric_reader_;
};
}  // namespace metrics
}  // namespace sdk
OPENTELEMETRY_END_NAMESPACE