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a21ffd6fe4
Re-implement flapping following the 'old way' of just observing the last 20 stage changes. refs #4982
66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include <bitset>
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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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void Checkable::UpdateFlappingStatus(bool stateChange)
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{
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std::bitset<20> stateChangeBuf = GetFlappingBuffer();
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int oldestIndex = (GetFlappingBuffer() & 0xFF00000) >> 20;
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stateChangeBuf[oldestIndex] = stateChange;
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oldestIndex = (oldestIndex + 1) % 20;
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double stateChanges = 0;
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for (int i = 0; i < 20; i++) {
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if (stateChangeBuf[(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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if (flapping != GetFlapping())
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SetFlappingLastChange(Utility::GetTime());
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SetFlappingBuffer((stateChangeBuf.to_ulong() | (oldestIndex << 20)));
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SetFlappingCurrent(flappingValue);
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SetFlapping(flapping);
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}
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bool Checkable::IsFlapping(void) 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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