icinga2/lib/icinga/checkable-flapping.cpp

81 lines
2.8 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "icinga/checkable.hpp"
#include "icinga/icingaapplication.hpp"
#include "base/utility.hpp"
using namespace icinga;
#define FLAPPING_INTERVAL (30 * 60)
double Checkable::GetFlappingCurrent(void) const
{
if (GetFlappingPositive() + GetFlappingNegative() <= 0)
return 0;
return 100 * GetFlappingPositive() / (GetFlappingPositive() + GetFlappingNegative());
}
void Checkable::UpdateFlappingStatus(bool stateChange)
{
double ts, now;
long positive, negative;
now = Utility::GetTime();
ts = GetFlappingLastChange();
positive = GetFlappingPositive();
negative = GetFlappingNegative();
double diff = now - ts;
if (positive + negative > FLAPPING_INTERVAL) {
double pct = (positive + negative - FLAPPING_INTERVAL) / FLAPPING_INTERVAL;
positive -= pct * positive;
negative -= pct * negative;
}
if (stateChange)
positive += diff;
else
negative += diff;
if (positive < 0)
positive = 0;
if (negative < 0)
negative = 0;
// Log(LogDebug, "Checkable")
// << "Flapping counter for '" << GetName() << "' is positive=" << positive << ", negative=" << negative;
SetFlappingLastChange(now);
SetFlappingPositive(positive);
SetFlappingNegative(negative);
}
bool Checkable::IsFlapping(void) const
{
if (!GetEnableFlapping() || !IcingaApplication::GetInstance()->GetEnableFlapping())
return false;
else
return GetFlappingCurrent() > GetFlappingThreshold();
}