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

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/)  *
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  19
  20 #ifndef MAXAGGREGATOR_H
  21 #define MAXAGGREGATOR_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 I2_LIVESTATUS_API MaxAggregatorState : public AggregatorState
  33 {
  34         MaxAggregatorState(void)
  35                 : Max(0)
  36         { }
  37
  38         double Max;
  39 };
  40
  41 /**
  42  * @ingroup livestatus
  43  */
  44 class I2_LIVESTATUS_API MaxAggregator : public Aggregator
  45 {
  46 public:
  47         DECLARE_PTR_TYPEDEFS(MaxAggregator);
  48
  49         MaxAggregator(const String& attr);
  50
  51         virtual void Apply(const Table::Ptr& table, const Value& row, AggregatorState **state) override;
  52         virtual double GetResultAndFreeState(AggregatorState *state) const override;
  53
  54 private:
  55         String m_MaxAttr;
  56
  57         static MaxAggregatorState *EnsureState(AggregatorState **state);
  58 };
  59
  60 }
  61
  62 #endif /* MAXAGGREGATOR_H */