counter.h

#pragma once
 
#include "prometheus/client_metric.h"
#include "prometheus/detail/builder.h"  // IWYU pragma: export
#include "prometheus/detail/core_export.h"
#include "prometheus/gauge.h"
#include "prometheus/metric_type.h"
 
namespace prometheus {

class PROMETHEUS_CPP_CORE_EXPORT Counter {
 public:
  static const MetricType metric_type{MetricType::Counter};

  Counter() = default;

  void Increment();

  void Increment(double);

  double Value() const;

  ClientMetric Collect() const;
 
 private:
  Gauge gauge_{0.0};
};

PROMETHEUS_CPP_CORE_EXPORT detail::Builder<Counter> BuildCounter();
 
}  // namespace prometheus