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#pragma once
#include <future>
#include <memory>
#include <mutex>
#include <string>
#include <utility>
#include <vector>
#include "prometheus/collectable.h"
#include "prometheus/detail/http_method.h"
#include "prometheus/detail/push_export.h"
#include "prometheus/labels.h"
namespace prometheus {
namespace detail {
class CurlWrapper;
}
class PROMETHEUS_CPP_PUSH_EXPORT Gateway {
public:
Gateway(const std::string& host, const std::string& port,
const std::string& jobname, const Labels& labels = {},
const std::string& username = {}, const std::string& password = {});
Gateway(const Gateway&) = delete;
Gateway(Gateway&&) = delete;
Gateway& operator=(const Gateway&) = delete;
Gateway& operator=(Gateway&&) = delete;
~Gateway();
void RegisterCollectable(const std::weak_ptr<Collectable>& collectable,
const Labels* labels = nullptr);
static Labels GetInstanceLabel(std::string hostname);
// Push metrics to the given pushgateway.
int Push();
std::future<int> AsyncPush();
// PushAdd metrics to the given pushgateway.
int PushAdd();
std::future<int> AsyncPushAdd();
// Delete metrics from the given pushgateway.
int Delete();
// Delete metrics from the given pushgateway.
std::future<int> AsyncDelete();
// Delete metrics from the given pushgateway (for configured instance labels).
int DeleteForInstance();
// Delete metrics from the given pushgateway (for configured instance labels).
std::future<int> AsyncDeleteForInstance();
private:
std::string jobUri_;
std::string labels_;
std::unique_ptr<detail::CurlWrapper> curlWrapper_;
std::mutex mutex_;
using CollectableEntry = std::pair<std::weak_ptr<Collectable>, std::string>;
std::vector<CollectableEntry> collectables_;
std::string getUri(const CollectableEntry& collectable) const;
int push(detail::HttpMethod method);
std::future<int> async_push(detail::HttpMethod method);
static void CleanupStalePointers(std::vector<CollectableEntry>& collectables);
};
} // namespace prometheus
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