mirror of https://github.com/Icinga/icinga2.git
80 lines
1.5 KiB
C++
80 lines
1.5 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#include "icinga/checkable.hpp"
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#include "icinga/icingaapplication.hpp"
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#include "base/utility.hpp"
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using namespace icinga;
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template<typename T>
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struct Bitset
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{
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public:
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Bitset(T value)
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: m_Data(value)
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{ }
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void Modify(int index, bool bit)
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{
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if (bit)
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m_Data |= 1 << index;
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else
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m_Data &= ~(1 << index);
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}
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bool Get(int index) const
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{
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return m_Data & (1 << index);
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}
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T GetValue() const
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{
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return m_Data;
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}
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private:
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T m_Data{0};
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};
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void Checkable::UpdateFlappingStatus(bool stateChange)
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{
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Bitset<unsigned long> stateChangeBuf = GetFlappingBuffer();
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int oldestIndex = GetFlappingIndex();
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stateChangeBuf.Modify(oldestIndex, stateChange);
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oldestIndex = (oldestIndex + 1) % 20;
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double stateChanges = 0;
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/* Iterate over our state array and compute a weighted total */
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for (int i = 0; i < 20; i++) {
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if (stateChangeBuf.Get((oldestIndex + i) % 20))
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stateChanges += 0.8 + (0.02 * i);
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}
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double flappingValue = 100.0 * stateChanges / 20.0;
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bool flapping;
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if (GetFlapping())
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flapping = flappingValue > GetFlappingThresholdLow();
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else
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flapping = flappingValue > GetFlappingThresholdHigh();
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SetFlappingBuffer(stateChangeBuf.GetValue());
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SetFlappingIndex(oldestIndex);
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SetFlappingCurrent(flappingValue);
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SetFlapping(flapping, true);
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if (flapping != GetFlapping())
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SetFlappingLastChange(Utility::GetTime());
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}
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bool Checkable::IsFlapping() const
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{
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if (!GetEnableFlapping() || !IcingaApplication::GetInstance()->GetEnableFlapping())
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return false;
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else
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return GetFlapping();
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}
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