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#ifndef QUERY_H
#define QUERY_H
#include "ml-private.h"
namespace ml {
class Query {
public:
Query(RRDDIM *RD) : RD(RD) {
Ops = &RD->tiers[0]->query_ops;
}
time_t latestTime() {
return Ops->latest_time(RD->tiers[0]->db_metric_handle);
}
time_t oldestTime() {
return Ops->oldest_time(RD->tiers[0]->db_metric_handle);
}
void init(time_t AfterT, time_t BeforeT) {
Ops->init(RD->tiers[0]->db_metric_handle, &Handle, AfterT, BeforeT, TIER_QUERY_FETCH_SUM);
}
bool isFinished() {
return Ops->is_finished(&Handle);
}
std::pair<time_t, CalculatedNumber> nextMetric() {
STORAGE_POINT sp = Ops->next_metric(&Handle);
return { sp.start_time, sp.sum / sp.count };
}
~Query() {
Ops->finalize(&Handle);
}
private:
RRDDIM *RD;
struct rrddim_query_ops *Ops;
struct rrddim_query_handle Handle;
};
} // namespace ml
#endif /* QUERY_H */
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