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#pragma once
#include <vector>
#include "prometheus/detail/core_export.h"
namespace prometheus {
struct MetricFamily;
}
namespace prometheus {
/// @brief Interface implemented by anything that can be used by Prometheus to
/// collect metrics.
///
/// A Collectable has to be registered for collection. See Registry.
class PROMETHEUS_CPP_CORE_EXPORT Collectable {
public:
virtual ~Collectable() = default;
/// \brief Returns a list of metrics and their samples.
virtual std::vector<MetricFamily> Collect() const = 0;
};
} // namespace prometheus
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