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

   1 /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
   2
   3 #ifndef COUNTAGGREGATOR_H
   4 #define COUNTAGGREGATOR_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 CountAggregatorState final : public AggregatorState
  16 {
  17         int Count{0};
  18 };
  19
  20 /**
  21  * @ingroup livestatus
  22  */
  23 class CountAggregator final : public Aggregator
  24 {
  25 public:
  26         DECLARE_PTR_TYPEDEFS(CountAggregator);
  27
  28         void Apply(const Table::Ptr& table, const Value& row, AggregatorState **) override;
  29         double GetResultAndFreeState(AggregatorState *state) const override;
  30
  31 private:
  32         static CountAggregatorState *EnsureState(AggregatorState **state);
  33 };
  34
  35 }
  36
  37 #endif /* COUNTAGGREGATOR_H */