granicus.if.org Git - icinga2/blob - lib/livestatus/sumaggregator.hpp

   1 /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
   2
   3 #ifndef SUMAGGREGATOR_H
   4 #define SUMAGGREGATOR_H
   5
   6 #include "livestatus/table.hpp"
   7 #include "livestatus/aggregator.hpp"
   8
   9 namespace icinga
  10 {
  11
  12 /**
  13  * @ingroup livestatus
  14  */
  15 struct SumAggregatorState final : public AggregatorState
  16 {
  17         double Sum{0};
  18 };
  19
  20 /**
  21  * @ingroup livestatus
  22  */
  23 class SumAggregator final : public Aggregator
  24 {
  25 public:
  26         DECLARE_PTR_TYPEDEFS(SumAggregator);
  27
  28         SumAggregator(String attr);
  29
  30         void Apply(const Table::Ptr& table, const Value& row, AggregatorState **state) override;
  31         double GetResultAndFreeState(AggregatorState *state) const override;
  32
  33 private:
  34         String m_SumAttr;
  35
  36         static SumAggregatorState *EnsureState(AggregatorState **state);
  37 };
  38
  39 }
  40
  41 #endif /* SUMAGGREGATOR_H */