mirror of https://github.com/Icinga/icinga2.git
664 lines
20 KiB
C++
664 lines
20 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org) *
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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 "icinga/checkable.hpp"
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#include "icinga/service.hpp"
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#include "icinga/host.hpp"
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#include "icinga/checkcommand.hpp"
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#include "icinga/icingaapplication.hpp"
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#include "icinga/cib.hpp"
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#include "icinga/apievents.hpp"
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#include "remote/messageorigin.hpp"
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#include "remote/apilistener.hpp"
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#include "base/objectlock.hpp"
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#include "base/logger.hpp"
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#include "base/convert.hpp"
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#include "base/utility.hpp"
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#include "base/context.hpp"
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#include <boost/foreach.hpp>
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using namespace icinga;
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boost::signals2::signal<void (const Checkable::Ptr&, const CheckResult::Ptr&, const MessageOrigin&)> Checkable::OnNewCheckResult;
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boost::signals2::signal<void (const Checkable::Ptr&, const CheckResult::Ptr&, StateType, const MessageOrigin&)> Checkable::OnStateChange;
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boost::signals2::signal<void (const Checkable::Ptr&, const CheckResult::Ptr&, std::set<Checkable::Ptr>, const MessageOrigin&)> Checkable::OnReachabilityChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, NotificationType, const CheckResult::Ptr&, const String&, const String&)> Checkable::OnNotificationsRequested;
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boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> Checkable::OnNextCheckChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnForceNextCheckChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnForceNextNotificationChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableActiveChecksChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnablePassiveChecksChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableNotificationsChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, bool, const MessageOrigin&)> Checkable::OnEnableFlappingChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> Checkable::OnCheckIntervalChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, double, const MessageOrigin&)> Checkable::OnRetryIntervalChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, const CheckCommand::Ptr&, const MessageOrigin&)> Checkable::OnCheckCommandChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, int, const MessageOrigin&)> Checkable::OnMaxCheckAttemptsChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, const TimePeriod::Ptr&, const MessageOrigin&)> Checkable::OnCheckPeriodChanged;
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boost::signals2::signal<void (const Checkable::Ptr&, FlappingState)> Checkable::OnFlappingChanged;
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CheckCommand::Ptr Checkable::GetCheckCommand(void) const
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{
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String command;
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if (!GetOverrideCheckCommand().IsEmpty())
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command = GetOverrideCheckCommand();
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else
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command = GetCheckCommandRaw();
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return CheckCommand::GetByName(command);
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}
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void Checkable::SetCheckCommand(const CheckCommand::Ptr& command, const MessageOrigin& origin)
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{
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SetOverrideCheckCommand(command->GetName());
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OnCheckCommandChanged(this, command, origin);
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}
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TimePeriod::Ptr Checkable::GetCheckPeriod(void) const
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{
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String tp;
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if (!GetOverrideCheckPeriod().IsEmpty())
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tp = GetOverrideCheckPeriod();
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else
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tp = GetCheckPeriodRaw();
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return TimePeriod::GetByName(tp);
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}
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void Checkable::SetCheckPeriod(const TimePeriod::Ptr& tp, const MessageOrigin& origin)
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{
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SetOverrideCheckPeriod(tp->GetName());
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OnCheckPeriodChanged(this, tp, origin);
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}
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double Checkable::GetCheckInterval(void) const
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{
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if (!GetOverrideCheckInterval().IsEmpty())
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return GetOverrideCheckInterval();
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else
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return GetCheckIntervalRaw();
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}
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void Checkable::SetCheckInterval(double interval, const MessageOrigin& origin)
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{
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SetOverrideCheckInterval(interval);
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OnCheckIntervalChanged(this, interval, origin);
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}
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double Checkable::GetRetryInterval(void) const
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{
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if (!GetOverrideRetryInterval().IsEmpty())
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return GetOverrideRetryInterval();
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else
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return GetRetryIntervalRaw();
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}
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void Checkable::SetRetryInterval(double interval, const MessageOrigin& origin)
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{
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SetOverrideRetryInterval(interval);
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OnRetryIntervalChanged(this, interval, origin);
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}
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void Checkable::SetSchedulingOffset(long offset)
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{
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m_SchedulingOffset = offset;
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}
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long Checkable::GetSchedulingOffset(void)
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{
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return m_SchedulingOffset;
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}
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void Checkable::SetNextCheck(double nextCheck, const MessageOrigin& origin)
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{
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SetNextCheckRaw(nextCheck);
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OnNextCheckChanged(this, nextCheck, origin);
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}
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double Checkable::GetNextCheck(void)
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{
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return GetNextCheckRaw();
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}
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void Checkable::UpdateNextCheck(void)
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{
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double interval;
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if (GetStateType() == StateTypeSoft && GetLastCheckResult() != NULL)
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interval = GetRetryInterval();
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else
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interval = GetCheckInterval();
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double now = Utility::GetTime();
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double adj = 0;
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if (interval > 1)
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adj = fmod(now * 100 + GetSchedulingOffset(), interval * 100) / 100.0;
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SetNextCheck(now - adj + interval);
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}
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bool Checkable::HasBeenChecked(void) const
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{
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return GetLastCheckResult() != NULL;
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}
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double Checkable::GetLastCheck(void) const
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{
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CheckResult::Ptr cr = GetLastCheckResult();
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double schedule_end = -1;
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if (cr)
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schedule_end = cr->GetScheduleEnd();
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return schedule_end;
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}
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bool Checkable::GetEnableActiveChecks(void) const
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{
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if (!GetOverrideEnableActiveChecks().IsEmpty())
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return GetOverrideEnableActiveChecks();
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else
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return GetEnableActiveChecksRaw();
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}
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void Checkable::SetEnableActiveChecks(bool enabled, const MessageOrigin& origin)
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{
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SetOverrideEnableActiveChecks(enabled);
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OnEnableActiveChecksChanged(this, enabled, origin);
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}
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bool Checkable::GetEnablePassiveChecks(void) const
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{
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if (!GetOverrideEnablePassiveChecks().IsEmpty())
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return GetOverrideEnablePassiveChecks();
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else
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return GetEnablePassiveChecksRaw();
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}
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void Checkable::SetEnablePassiveChecks(bool enabled, const MessageOrigin& origin)
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{
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SetOverrideEnablePassiveChecks(enabled);
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OnEnablePassiveChecksChanged(this, enabled, origin);
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}
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bool Checkable::GetForceNextCheck(void) const
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{
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return GetForceNextCheckRaw();
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}
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void Checkable::SetForceNextCheck(bool forced, const MessageOrigin& origin)
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{
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SetForceNextCheckRaw(forced);
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OnForceNextCheckChanged(this, forced, origin);
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}
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int Checkable::GetMaxCheckAttempts(void) const
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{
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if (!GetOverrideMaxCheckAttempts().IsEmpty())
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return GetOverrideMaxCheckAttempts();
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else
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return GetMaxCheckAttemptsRaw();
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}
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void Checkable::SetMaxCheckAttempts(int attempts, const MessageOrigin& origin)
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{
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SetOverrideMaxCheckAttempts(attempts);
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OnMaxCheckAttemptsChanged(this, attempts, origin);
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}
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void Checkable::ProcessCheckResult(const CheckResult::Ptr& cr, const MessageOrigin& origin)
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{
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{
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ObjectLock olock(this);
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m_CheckRunning = false;
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}
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double now = Utility::GetTime();
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if (cr->GetScheduleStart() == 0)
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cr->SetScheduleStart(now);
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if (cr->GetScheduleEnd() == 0)
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cr->SetScheduleEnd(now);
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if (cr->GetExecutionStart() == 0)
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cr->SetExecutionStart(now);
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if (cr->GetExecutionEnd() == 0)
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cr->SetExecutionEnd(now);
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if (origin.IsLocal())
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cr->SetCheckSource(IcingaApplication::GetInstance()->GetNodeName());
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Endpoint::Ptr command_endpoint = GetCommandEndpoint();
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if (command_endpoint && GetExtension("agent_check")) {
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/* agent checks go through the api */
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ApiListener::Ptr listener = ApiListener::GetInstance();
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if (listener) {
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/* send message back to its origin */
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Dictionary::Ptr message = ApiEvents::MakeCheckResultMessage(this, cr);
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listener->SyncSendMessage(command_endpoint, message);
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/* HA cluster zone nodes must also process the check result locally
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* by fetching the real host/service object if existing
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*/
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Host::Ptr tempHost;
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Service::Ptr tempService;
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tie(tempHost, tempService) = GetHostService(this);
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Host::Ptr realHost = Host::GetByName(tempHost->GetName());
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if (realHost) {
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Value agent_service_name = GetExtension("agent_service_name");
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if (!agent_service_name.IsEmpty()) {
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Checkable::Ptr realCheckable;
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realCheckable = realHost->GetServiceByShortName(agent_service_name);
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if (realCheckable) {
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realCheckable->ProcessCheckResult(cr, origin);
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}
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}
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}
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}
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return;
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}
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bool reachable = IsReachable();
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bool notification_reachable = IsReachable(DependencyNotification);
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ASSERT(!OwnsLock());
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ObjectLock olock(this);
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CheckResult::Ptr old_cr = GetLastCheckResult();
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ServiceState old_state = GetStateRaw();
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StateType old_stateType = GetStateType();
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long old_attempt = GetCheckAttempt();
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bool recovery = false;
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if (old_cr && cr->GetExecutionStart() < old_cr->GetExecutionStart())
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return;
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/* The ExecuteCheck function already sets the old state, but we need to do it again
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* in case this was a passive check result. */
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SetLastStateRaw(old_state);
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SetLastStateType(old_stateType);
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SetLastReachable(reachable);
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long attempt = 1;
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std::set<Checkable::Ptr> children = GetChildren();
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if (!old_cr) {
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SetStateType(StateTypeHard);
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} else if (cr->GetState() == ServiceOK) {
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if (old_state == ServiceOK && old_stateType == StateTypeSoft) {
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SetStateType(StateTypeHard); // SOFT OK -> HARD OK
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recovery = true;
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}
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if (old_state != ServiceOK)
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recovery = true; // NOT OK -> SOFT/HARD OK
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ResetNotificationNumbers();
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SetLastStateOK(Utility::GetTime());
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/* update reachability for child objects in OK state */
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if (!children.empty())
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OnReachabilityChanged(this, cr, children, origin);
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} else {
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if (old_attempt >= GetMaxCheckAttempts()) {
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SetStateType(StateTypeHard);
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} else if (old_stateType == StateTypeSoft && old_state != ServiceOK) {
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SetStateType(StateTypeSoft);
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attempt = old_attempt + 1; //NOT-OK -> NOT-OK counter
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} else if (old_state == ServiceOK) {
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SetStateType(StateTypeSoft);
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attempt = 1; //OK -> NOT-OK transition, reset the counter
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} else {
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attempt = old_attempt;
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}
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switch (cr->GetState()) {
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case ServiceOK:
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/* Nothing to do here. */
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break;
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case ServiceWarning:
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SetLastStateWarning(Utility::GetTime());
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break;
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case ServiceCritical:
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SetLastStateCritical(Utility::GetTime());
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break;
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case ServiceUnknown:
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SetLastStateUnknown(Utility::GetTime());
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break;
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}
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/* update reachability for child objects in NOT-OK state */
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if (!children.empty())
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OnReachabilityChanged(this, cr, children, origin);
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}
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if (!reachable)
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SetLastStateUnreachable(Utility::GetTime());
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SetCheckAttempt(attempt);
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ServiceState new_state = cr->GetState();
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SetStateRaw(new_state);
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bool stateChange = (old_state != new_state);
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if (stateChange) {
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SetLastStateChange(now);
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/* remove acknowledgements */
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if (GetAcknowledgement() == AcknowledgementNormal ||
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(GetAcknowledgement() == AcknowledgementSticky && new_state == ServiceOK)) {
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ClearAcknowledgement();
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}
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/* reschedule direct parents */
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BOOST_FOREACH(const Checkable::Ptr& parent, GetParents()) {
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if (parent.get() == this)
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continue;
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ObjectLock olock(parent);
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parent->SetNextCheck(Utility::GetTime());
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}
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}
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bool remove_acknowledgement_comments = false;
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if (GetAcknowledgement() == AcknowledgementNone)
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remove_acknowledgement_comments = true;
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bool hardChange = (GetStateType() == StateTypeHard && old_stateType == StateTypeSoft);
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if (stateChange && old_stateType == StateTypeHard && GetStateType() == StateTypeHard)
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hardChange = true;
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bool is_volatile = GetVolatile();
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if (hardChange || is_volatile) {
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SetLastHardStateRaw(new_state);
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SetLastHardStateChange(now);
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}
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if (new_state != ServiceOK)
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TriggerDowntimes();
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Host::Ptr host;
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Service::Ptr service;
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tie(host, service) = GetHostService(this);
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CheckableType checkable_type = CheckableHost;
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if (service)
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checkable_type = CheckableService;
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/* statistics for external tools */
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Checkable::UpdateStatistics(cr, checkable_type);
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bool in_downtime = IsInDowntime();
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bool send_notification = hardChange && notification_reachable && !in_downtime && !IsAcknowledged();
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if (!old_cr)
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send_notification = false; /* Don't send notifications for the initial state change */
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if (old_state == ServiceOK && old_stateType == StateTypeSoft)
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send_notification = false; /* Don't send notifications for SOFT-OK -> HARD-OK. */
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if (is_volatile && old_state == ServiceOK && new_state == ServiceOK)
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send_notification = false; /* Don't send notifications for volatile OK -> OK changes. */
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bool send_downtime_notification = (GetLastInDowntime() != in_downtime);
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SetLastInDowntime(in_downtime);
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olock.Unlock();
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if (remove_acknowledgement_comments)
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RemoveCommentsByType(CommentAcknowledgement);
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Dictionary::Ptr vars_after = new Dictionary();
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vars_after->Set("state", new_state);
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vars_after->Set("state_type", GetStateType());
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vars_after->Set("attempt", GetCheckAttempt());
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vars_after->Set("reachable", reachable);
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if (old_cr)
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cr->SetVarsBefore(old_cr->GetVarsAfter());
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cr->SetVarsAfter(vars_after);
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olock.Lock();
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SetLastCheckResult(cr);
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bool was_flapping, is_flapping;
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was_flapping = IsFlapping();
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if (GetStateType() == StateTypeHard)
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UpdateFlappingStatus(stateChange);
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is_flapping = IsFlapping();
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olock.Unlock();
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// Log(LogDebug, "Checkable")
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// << "Flapping: Checkable " << GetName()
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// << " was: " << (was_flapping)
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// << " is: " << is_flapping)
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// << " threshold: " << GetFlappingThreshold()
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// << "% current: " + GetFlappingCurrent()) << "%.";
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OnNewCheckResult(this, cr, origin);
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/* signal status updates to for example db_ido */
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OnStateChanged(this);
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String old_state_str = (service ? Service::StateToString(old_state) : Host::StateToString(Host::CalculateState(old_state)));
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String new_state_str = (service ? Service::StateToString(new_state) : Host::StateToString(Host::CalculateState(new_state)));
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if (hardChange || is_volatile) {
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OnStateChange(this, cr, StateTypeHard, origin);
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Log(LogNotice, "Checkable")
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<< "State Change: Checkable " << GetName() << " hard state change from " << old_state_str << " to " << new_state_str << " detected." << (is_volatile ? " Checkable is volatile." : "");
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} else if (stateChange) {
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OnStateChange(this, cr, StateTypeSoft, origin);
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Log(LogNotice, "Checkable")
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<< "State Change: Checkable " << GetName() << " soft state change from " << old_state_str << " to " << new_state_str << " detected.";
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}
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if (GetStateType() == StateTypeSoft || hardChange || recovery || is_volatile)
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ExecuteEventHandler();
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if (send_downtime_notification)
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OnNotificationsRequested(this, in_downtime ? NotificationDowntimeStart : NotificationDowntimeEnd, cr, "", "");
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if (!was_flapping && is_flapping) {
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OnNotificationsRequested(this, NotificationFlappingStart, cr, "", "");
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Log(LogNotice, "Checkable")
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<< "Flapping: Checkable " << GetName() << " started flapping (" << GetFlappingThreshold() << "% < " << GetFlappingCurrent() << "%).";
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OnFlappingChanged(this, FlappingStarted);
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} else if (was_flapping && !is_flapping) {
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OnNotificationsRequested(this, NotificationFlappingEnd, cr, "", "");
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Log(LogNotice, "Checkable")
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<< "Flapping: Checkable " << GetName() << " stopped flapping (" << GetFlappingThreshold() << "% >= " << GetFlappingCurrent() << "%).";
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OnFlappingChanged(this, FlappingStopped);
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} else if (send_notification)
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OnNotificationsRequested(this, recovery ? NotificationRecovery : NotificationProblem, cr, "", "");
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}
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bool Checkable::IsCheckPending(void) const
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{
|
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ObjectLock olock(this);
|
|
return m_CheckRunning;
|
|
}
|
|
|
|
void Checkable::ExecuteRemoteCheck(const Dictionary::Ptr& resolvedMacros)
|
|
{
|
|
CONTEXT("Executing remote check for object '" + GetName() + "'");
|
|
|
|
double scheduled_start = GetNextCheck();
|
|
double before_check = Utility::GetTime();
|
|
|
|
CheckResult::Ptr cr = new CheckResult();
|
|
cr->SetScheduleStart(scheduled_start);
|
|
cr->SetExecutionStart(before_check);
|
|
|
|
GetCheckCommand()->Execute(this, cr, resolvedMacros, true);
|
|
}
|
|
|
|
void Checkable::ExecuteCheck()
|
|
{
|
|
CONTEXT("Executing check for object '" + GetName() + "'");
|
|
|
|
ASSERT(!OwnsLock());
|
|
|
|
UpdateNextCheck();
|
|
|
|
bool reachable = IsReachable();
|
|
|
|
{
|
|
ObjectLock olock(this);
|
|
|
|
/* don't run another check if there is one pending */
|
|
if (m_CheckRunning)
|
|
return;
|
|
|
|
m_CheckRunning = true;
|
|
|
|
SetLastStateRaw(GetStateRaw());
|
|
SetLastStateType(GetLastStateType());
|
|
SetLastReachable(reachable);
|
|
}
|
|
|
|
/* keep track of scheduling info in case the check type doesn't provide its own information */
|
|
double scheduled_start = GetNextCheck();
|
|
double before_check = Utility::GetTime();
|
|
|
|
CheckResult::Ptr cr = new CheckResult();
|
|
|
|
cr->SetScheduleStart(scheduled_start);
|
|
cr->SetExecutionStart(before_check);
|
|
|
|
Endpoint::Ptr endpoint = GetCommandEndpoint();
|
|
bool local = !endpoint || endpoint == Endpoint::GetLocalEndpoint();
|
|
|
|
if (local) {
|
|
GetCheckCommand()->Execute(this, cr, NULL, false);
|
|
} else {
|
|
Dictionary::Ptr macros = new Dictionary();
|
|
GetCheckCommand()->Execute(this, cr, macros, false);
|
|
|
|
if (endpoint->IsConnected()) {
|
|
/* perform check on remote endpoint */
|
|
Dictionary::Ptr message = new Dictionary();
|
|
message->Set("jsonrpc", "2.0");
|
|
message->Set("method", "event::ExecuteCommand");
|
|
|
|
Host::Ptr host;
|
|
Service::Ptr service;
|
|
tie(host, service) = GetHostService(this);
|
|
|
|
Dictionary::Ptr params = new Dictionary();
|
|
message->Set("params", params);
|
|
params->Set("command_type", "check_command");
|
|
params->Set("command", GetCheckCommand()->GetName());
|
|
params->Set("host", host->GetName());
|
|
|
|
if (service)
|
|
params->Set("service", service->GetShortName());
|
|
|
|
params->Set("macros", macros);
|
|
|
|
ApiListener::Ptr listener = ApiListener::GetInstance();
|
|
|
|
if (listener)
|
|
listener->SyncSendMessage(endpoint, message);
|
|
|
|
} else if (Application::GetInstance()->GetStartTime() < Utility::GetTime() - 30) {
|
|
/* fail to perform check on unconnected endpoint */
|
|
cr->SetState(ServiceUnknown);
|
|
|
|
cr->SetOutput("Remote Icinga instance '" + endpoint->GetName() +
|
|
"' " + "is not connected to '" + Endpoint::GetLocalEndpoint()->GetName() + "'");
|
|
|
|
ProcessCheckResult(cr);
|
|
}
|
|
|
|
{
|
|
ObjectLock olock(this);
|
|
m_CheckRunning = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Checkable::UpdateStatistics(const CheckResult::Ptr& cr, CheckableType type)
|
|
{
|
|
time_t ts = cr->GetScheduleEnd();
|
|
|
|
if (type == CheckableHost) {
|
|
if (cr->GetActive())
|
|
CIB::UpdateActiveHostChecksStatistics(ts, 1);
|
|
else
|
|
CIB::UpdatePassiveHostChecksStatistics(ts, 1);
|
|
} else if (type == CheckableService) {
|
|
if (cr->GetActive())
|
|
CIB::UpdateActiveServiceChecksStatistics(ts, 1);
|
|
else
|
|
CIB::UpdatePassiveServiceChecksStatistics(ts, 1);
|
|
} else {
|
|
Log(LogWarning, "Checkable", "Unknown checkable type for statistic update.");
|
|
}
|
|
}
|
|
|
|
double Checkable::CalculateExecutionTime(const CheckResult::Ptr& cr)
|
|
{
|
|
if (!cr)
|
|
return 0;
|
|
|
|
return cr->GetExecutionEnd() - cr->GetExecutionStart();
|
|
}
|
|
|
|
double Checkable::CalculateLatency(const CheckResult::Ptr& cr)
|
|
{
|
|
if (!cr)
|
|
return 0;
|
|
|
|
double latency = (cr->GetScheduleEnd() - cr->GetScheduleStart()) - CalculateExecutionTime(cr);
|
|
|
|
if (latency < 0)
|
|
latency = 0;
|
|
|
|
return latency;
|
|
}
|