mirror of https://github.com/Icinga/icinga2.git
554 lines
15 KiB
C++
554 lines
15 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-present 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/service.h"
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#include "icinga/checkcommand.h"
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#include "icinga/icingaapplication.h"
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#include "icinga/cib.h"
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#include "base/dynamictype.h"
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#include "base/objectlock.h"
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#include "base/logger_fwd.h"
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#include "base/convert.h"
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#include "base/utility.h"
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#include "base/exception.h"
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#include "base/context.h"
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#include <boost/foreach.hpp>
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#include <boost/algorithm/string/replace.hpp>
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using namespace icinga;
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boost::signals2::signal<void (const Service::Ptr&, const CheckResult::Ptr&, const String&)> Service::OnNewCheckResult;
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boost::signals2::signal<void (const Service::Ptr&, const CheckResult::Ptr&, StateType, const String&)> Service::OnStateChange;
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boost::signals2::signal<void (const Service::Ptr&, NotificationType, const CheckResult::Ptr&, const String&, const String&)> Service::OnNotificationsRequested;
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boost::signals2::signal<void (const Service::Ptr&, double, const String&)> Service::OnNextCheckChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnForceNextCheckChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnForceNextNotificationChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnEnableActiveChecksChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnEnablePassiveChecksChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnEnableNotificationsChanged;
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boost::signals2::signal<void (const Service::Ptr&, bool, const String&)> Service::OnEnableFlappingChanged;
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boost::signals2::signal<void (const Service::Ptr&, FlappingState)> Service::OnFlappingChanged;
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CheckCommand::Ptr Service::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 Service::SetCheckCommand(const CheckCommand::Ptr& command)
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{
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SetOverrideCheckCommand(command->GetName());
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}
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TimePeriod::Ptr Service::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 Service::SetCheckPeriod(const TimePeriod::Ptr& tp)
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{
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SetOverrideCheckPeriod(tp->GetName());
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}
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double Service::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 Service::SetCheckInterval(double interval)
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{
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SetOverrideCheckInterval(interval);
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}
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double Service::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 Service::SetRetryInterval(double interval)
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{
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SetOverrideRetryInterval(interval);
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}
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void Service::SetSchedulingOffset(long offset)
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{
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m_SchedulingOffset = offset;
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}
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long Service::GetSchedulingOffset(void)
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{
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return m_SchedulingOffset;
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}
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void Service::SetNextCheck(double nextCheck, const String& authority)
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{
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SetNextCheckRaw(nextCheck);
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OnNextCheckChanged(GetSelf(), nextCheck, authority);
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}
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double Service::GetNextCheck(void)
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{
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return GetNextCheckRaw();
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}
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void Service::UpdateNextCheck(void)
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{
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ObjectLock olock(this);
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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 Service::HasBeenChecked(void) const
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{
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return GetLastCheckResult() != NULL;
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}
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double Service::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 Service::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 Service::SetEnableActiveChecks(bool enabled, const String& authority)
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{
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SetOverrideEnableActiveChecks(enabled);
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OnEnableActiveChecksChanged(GetSelf(), enabled, authority);
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}
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bool Service::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 Service::SetEnablePassiveChecks(bool enabled, const String& authority)
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{
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SetOverrideEnablePassiveChecks(enabled);
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OnEnablePassiveChecksChanged(GetSelf(), enabled, authority);
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}
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bool Service::GetForceNextCheck(void) const
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{
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return GetForceNextCheckRaw();
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}
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void Service::SetForceNextCheck(bool forced, const String& authority)
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{
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SetForceNextCheckRaw(forced);
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OnForceNextCheckChanged(GetSelf(), forced, authority);
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}
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int Service::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 Service::SetMaxCheckAttempts(int attempts)
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{
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SetOverrideMaxCheckAttempts(attempts);
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}
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void Service::ProcessCheckResult(const CheckResult::Ptr& cr, const String& authority)
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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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String check_source = cr->GetCheckSource();
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if (check_source.IsEmpty())
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cr->SetCheckSource(authority);
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bool reachable = IsReachable();
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bool notification_reachable = IsReachable(DependencyNotification);
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bool host_reachable = GetHost()->IsReachable();
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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 = GetState();
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StateType old_stateType = GetStateType();
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long old_attempt = GetCheckAttempt();
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bool recovery;
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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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SetLastState(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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if (!old_cr) {
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SetStateType(StateTypeHard);
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} else if (cr->GetState() == StateOK) {
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if (old_state == StateOK && old_stateType == StateTypeSoft)
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SetStateType(StateTypeHard); // SOFT OK -> HARD OK
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recovery = true;
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ResetNotificationNumbers();
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SetLastStateOK(Utility::GetTime());
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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 (GetStateType() == StateTypeSoft || GetState() == StateOK) {
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SetStateType(StateTypeSoft);
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attempt = old_attempt + 1;
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} else {
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attempt = old_attempt;
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}
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recovery = false;
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switch (cr->GetState()) {
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case StateOK:
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/* Nothing to do here. */
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break;
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case StateWarning:
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SetLastStateWarning(Utility::GetTime());
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break;
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case StateCritical:
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SetLastStateCritical(Utility::GetTime());
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break;
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case StateUnknown:
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SetLastStateUnknown(Utility::GetTime());
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break;
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}
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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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SetState(cr->GetState());
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bool stateChange = (old_state != GetState());
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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 && GetStateType() == StateTypeHard && GetState() == StateOK)) {
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ClearAcknowledgement();
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}
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/* reschedule service dependencies */
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BOOST_FOREACH(const Service::Ptr& parent, GetParentServices()) {
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ObjectLock olock(parent);
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parent->SetNextCheck(Utility::GetTime());
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}
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/* reschedule host dependencies */
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BOOST_FOREACH(const Host::Ptr& parent, GetParentHosts()) {
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Service::Ptr service = parent->GetCheckService();
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if (service && service->GetName() != GetName()) {
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ObjectLock olock(service);
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service->SetNextCheck(Utility::GetTime());
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}
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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 (old_state != GetState() && old_stateType == StateTypeHard && GetStateType() == StateTypeHard)
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hardChange = true;
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if (GetVolatile())
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hardChange = true;
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if (hardChange) {
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SetLastHardState(GetState());
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SetLastHardStateChange(now);
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}
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if (GetState() != StateOK)
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TriggerDowntimes();
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Service::UpdateStatistics(cr);
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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 == StateOK && old_stateType == StateTypeSoft)
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send_notification = false; /* Don't send notifications for SOFT-OK -> HARD-OK. */
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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 = make_shared<Dictionary>();
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vars_after->Set("state", GetState());
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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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vars_after->Set("host_reachable", host_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, "icinga", "Flapping: Service " + GetName() +
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// " was: " + Convert::ToString(was_flapping) +
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// " is: " + Convert::ToString(is_flapping) +
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// " threshold: " + Convert::ToString(GetFlappingThreshold()) +
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// "% current: " + Convert::ToString(GetFlappingCurrent()) + "%.");
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OnNewCheckResult(GetSelf(), cr, authority);
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/* signal status updates to for example db_ido */
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OnStateChanged(GetSelf());
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if (hardChange)
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OnStateChange(GetSelf(), cr, StateTypeHard, authority);
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else if (stateChange)
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OnStateChange(GetSelf(), cr, StateTypeSoft, authority);
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if (GetStateType() == StateTypeSoft || hardChange || recovery)
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ExecuteEventHandler();
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if (send_downtime_notification)
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OnNotificationsRequested(GetSelf(), in_downtime ? NotificationDowntimeStart : NotificationDowntimeEnd, cr, "", "");
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if (!was_flapping && is_flapping) {
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OnNotificationsRequested(GetSelf(), NotificationFlappingStart, cr, "", "");
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Log(LogDebug, "icinga", "Flapping: Service " + GetName() + " started flapping (" + Convert::ToString(GetFlappingThreshold()) + "% < " + Convert::ToString(GetFlappingCurrent()) + "%).");
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OnFlappingChanged(GetSelf(), FlappingStarted);
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} else if (was_flapping && !is_flapping) {
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OnNotificationsRequested(GetSelf(), NotificationFlappingEnd, cr, "", "");
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Log(LogDebug, "icinga", "Flapping: Service " + GetName() + " stopped flapping (" + Convert::ToString(GetFlappingThreshold()) + "% >= " + Convert::ToString(GetFlappingCurrent()) + "%).");
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OnFlappingChanged(GetSelf(), FlappingStopped);
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} else if (send_notification)
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OnNotificationsRequested(GetSelf(), recovery ? NotificationRecovery : NotificationProblem, cr, "", "");
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}
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ServiceState Service::StateFromString(const String& state)
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{
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if (state == "OK")
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return StateOK;
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else if (state == "WARNING")
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return StateWarning;
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else if (state == "CRITICAL")
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return StateCritical;
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else
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return StateUnknown;
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}
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String Service::StateToString(ServiceState state)
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{
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switch (state) {
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case StateOK:
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return "OK";
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case StateWarning:
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return "WARNING";
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case StateCritical:
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return "CRITICAL";
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case StateUnknown:
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default:
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return "UNKNOWN";
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}
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}
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StateType Service::StateTypeFromString(const String& type)
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{
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if (type == "SOFT")
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return StateTypeSoft;
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else
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return StateTypeHard;
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}
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String Service::StateTypeToString(StateType type)
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{
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if (type == StateTypeSoft)
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return "SOFT";
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else
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return "HARD";
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}
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void Service::ExecuteCheck(void)
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{
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CONTEXT("Executing service check for service '" + GetShortName() + "' on host '" + GetHost()->GetName() + "'");
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ASSERT(!OwnsLock());
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UpdateNextCheck();
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bool reachable = IsReachable();
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{
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ObjectLock olock(this);
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/* don't run another check if there is one pending */
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if (m_CheckRunning)
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return;
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m_CheckRunning = true;
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SetLastState(GetState());
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SetLastStateType(GetLastStateType());
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SetLastReachable(reachable);
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}
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/* keep track of scheduling info in case the check type doesn't provide its own information */
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double scheduled_start = GetNextCheck();
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double before_check = Utility::GetTime();
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Service::Ptr self = GetSelf();
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CheckResult::Ptr result = make_shared<CheckResult>();
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result->SetScheduleStart(scheduled_start);
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result->SetExecutionStart(before_check);
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GetCheckCommand()->Execute(GetSelf(), result);
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}
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void Service::UpdateStatistics(const CheckResult::Ptr& cr)
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{
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time_t ts = cr->GetScheduleEnd();
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if (cr->GetActive())
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CIB::UpdateActiveChecksStatistics(ts, 1);
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else
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CIB::UpdatePassiveChecksStatistics(ts, 1);
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}
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double Service::CalculateExecutionTime(const CheckResult::Ptr& cr)
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{
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if (!cr)
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return 0;
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return cr->GetExecutionEnd() - cr->GetExecutionStart();
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}
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double Service::CalculateLatency(const CheckResult::Ptr& cr)
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{
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if (!cr)
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return 0;
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double latency = (cr->GetScheduleEnd() - cr->GetScheduleStart()) - CalculateExecutionTime(cr);
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if (latency < 0)
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latency = 0;
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return latency;
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}
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