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handler.h
#pragma once
#include <memory>
#include <mutex>
#include <vector>
#include "CivetServer.h"
#include "prometheus/collectable.h"
#include "prometheus/counter.h"
#include "prometheus/family.h"
#include "prometheus/registry.h"
#include "prometheus/summary.h"
namespace prometheus {
namespace detail {
class MetricsHandler : public CivetHandler {
public:
explicit MetricsHandler(Registry& registry);
void RegisterCollectable(const std::weak_ptr<Collectable>& collectable);
void RemoveCollectable(const std::weak_ptr<Collectable>& collectable);
bool handleGet(CivetServer* server, struct mg_connection* conn) override;
private:
static void CleanupStalePointers(
std::vector<std::weak_ptr<Collectable>>& collectables);
std::mutex collectables_mutex_;
std::vector<std::weak_ptr<Collectable>> collectables_;
Family<Counter>& bytes_transferred_family_;
Counter& bytes_transferred_;
Family<Counter>& num_scrapes_family_;
Counter& num_scrapes_;
Family<Summary>& request_latencies_family_;
Summary& request_latencies_;
};
} // namespace detail
} // namespace prometheus