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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/)  *
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  19
  20 #ifndef COUNTAGGREGATOR_H
  21 #define COUNTAGGREGATOR_H
  22
  23 #include "livestatus/table.hpp"
  24 #include "livestatus/aggregator.hpp"
  25
  26 namespace icinga
  27 {
  28
  29 /**
  30  * @ingroup livestatus
  31  */
  32 struct CountAggregatorState final : public AggregatorState
  33 {
  34         int Count{0};
  35 };
  36
  37 /**
  38  * @ingroup livestatus
  39  */
  40 class CountAggregator final : public Aggregator
  41 {
  42 public:
  43         DECLARE_PTR_TYPEDEFS(CountAggregator);
  44
  45         void Apply(const Table::Ptr& table, const Value& row, AggregatorState **) override;
  46         double GetResultAndFreeState(AggregatorState *state) const override;
  47
  48 private:
  49         static CountAggregatorState *EnsureState(AggregatorState **state);
  50 };
  51
  52 }
  53
  54 #endif /* COUNTAGGREGATOR_H */