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

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