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#pragma once
#include "labels.h"
#include "metric.h"
#include <util/system/rwlock.h>
#include <library/cpp/threading/light_rw_lock/lightrwlock.h>
namespace NMonitoring {
class IMetricFactory {
public:
virtual ~IMetricFactory() = default;
virtual IGauge* Gauge(ILabelsPtr labels) = 0;
virtual ILazyGauge* LazyGauge(ILabelsPtr labels, std::function<double()> supplier) = 0;
virtual IIntGauge* IntGauge(ILabelsPtr labels) = 0;
virtual ILazyIntGauge* LazyIntGauge(ILabelsPtr labels, std::function<i64()> supplier) = 0;
virtual ICounter* Counter(ILabelsPtr labels) = 0;
virtual ILazyCounter* LazyCounter(ILabelsPtr labels, std::function<ui64()> supplier) = 0;
virtual IRate* Rate(ILabelsPtr labels) = 0;
virtual ILazyRate* LazyRate(ILabelsPtr labels, std::function<ui64()> supplier) = 0;
virtual IHistogram* HistogramCounter(
ILabelsPtr labels,
IHistogramCollectorPtr collector) = 0;
virtual IHistogram* HistogramRate(
ILabelsPtr labels,
IHistogramCollectorPtr collector) = 0;
};
class IMetricSupplier {
public:
virtual ~IMetricSupplier() = default;
virtual void Accept(TInstant time, IMetricConsumer* consumer) const = 0;
virtual void Append(TInstant time, IMetricConsumer* consumer) const = 0;
};
class IMetricRegistry: public IMetricSupplier, public IMetricFactory {
public:
virtual const TLabels& CommonLabels() const noexcept = 0;
virtual void RemoveMetric(const ILabels& labels) noexcept = 0;
virtual bool HasMetric(const ILabels& labels) noexcept = 0;
};
///////////////////////////////////////////////////////////////////////////////
// TMetricRegistry
///////////////////////////////////////////////////////////////////////////////
class TMetricRegistry: public IMetricRegistry {
public:
TMetricRegistry();
~TMetricRegistry();
explicit TMetricRegistry(const TLabels& commonLabels);
/**
* Not thread-safe. There should be no concurrent operations in the registry.
*/
TMetricRegistry& operator=(TMetricRegistry&& other);
/**
* Get a global metrics registry instance.
*/
static TMetricRegistry* Instance();
static std::shared_ptr<TMetricRegistry> SharedInstance();
TGauge* Gauge(TLabels labels);
TLazyGauge* LazyGauge(TLabels labels, std::function<double()> supplier);
TIntGauge* IntGauge(TLabels labels);
TLazyIntGauge* LazyIntGauge(TLabels labels, std::function<i64()> supplier);
TCounter* Counter(TLabels labels);
TLazyCounter* LazyCounter(TLabels labels, std::function<ui64()> supplier);
TRate* Rate(TLabels labels);
TLazyRate* LazyRate(TLabels labels, std::function<ui64()> supplier);
THistogram* HistogramCounter(
TLabels labels,
IHistogramCollectorPtr collector);
THistogram* HistogramRate(
TLabels labels,
IHistogramCollectorPtr collector);
/**
* Set all registered metrics to zero
*/
void Reset();
/**
* Remove all registered metrics from registry
*/
void Clear();
void Accept(TInstant time, IMetricConsumer* consumer) const override;
void Append(TInstant time, IMetricConsumer* consumer) const override;
const TLabels& CommonLabels() const noexcept override {
return CommonLabels_;
}
void RemoveMetric(const ILabels& labels) noexcept override;
bool HasMetric(const ILabels &labels) noexcept override;
private:
TGauge* Gauge(ILabelsPtr labels) override;
TLazyGauge* LazyGauge(ILabelsPtr labels, std::function<double()> supplier) override;
TIntGauge* IntGauge(ILabelsPtr labels) override;
TLazyIntGauge* LazyIntGauge(ILabelsPtr labels, std::function<i64()> supplier) override;
TCounter* Counter(ILabelsPtr labels) override;
TLazyCounter* LazyCounter(ILabelsPtr labels, std::function<ui64()> supplier) override;
TRate* Rate(ILabelsPtr labels) override;
TLazyRate* LazyRate(ILabelsPtr labels, std::function<ui64()> supplier) override;
THistogram* HistogramCounter(
ILabelsPtr labels,
IHistogramCollectorPtr collector) override;
THistogram* HistogramRate(
ILabelsPtr labels,
IHistogramCollectorPtr collector) override;
private:
THolder<TRWMutex> Lock_ = MakeHolder<TRWMutex>();
THashMap<ILabelsPtr, IMetricPtr> Metrics_;
template <typename TMetric, EMetricType type, typename TLabelsType, typename... Args>
TMetric* Metric(TLabelsType&& labels, Args&&... args);
TLabels CommonLabels_;
};
void WriteLabels(IMetricConsumer* consumer, const ILabels& labels);
}
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