mirror of https://github.com/Icinga/icinga2.git
554 lines
13 KiB
C++
554 lines
13 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 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 "i2-icinga.h"
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using namespace icinga;
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const int Service::DefaultMaxCheckAttempts = 3;
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const int Service::DefaultCheckInterval = 5 * 60;
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const int Service::CheckIntervalDivisor = 5;
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boost::signal<void (const Service::Ptr&, const String&)> Service::OnCheckerChanged;
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boost::signal<void (const Service::Ptr&, const Value&)> Service::OnNextCheckChanged;
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Value Service::GetCheckCommand(void) const
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{
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return Get("check_command");
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}
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long Service::GetMaxCheckAttempts(void) const
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{
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Value value = Get("max_check_attempts");
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if (value.IsEmpty())
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return DefaultMaxCheckAttempts;
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return value;
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}
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double Service::GetCheckInterval(void) const
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{
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Value value = Get("check_interval");
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if (value.IsEmpty())
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return DefaultCheckInterval;
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return value;
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}
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double Service::GetRetryInterval(void) const
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{
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Value value = Get("retry_interval");
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if (value.IsEmpty())
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return GetCheckInterval() / CheckIntervalDivisor;
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return value;
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}
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Dictionary::Ptr Service::GetCheckers(void) const
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{
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return Get("checkers");
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}
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void Service::SetSchedulingOffset(long offset)
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{
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Set("scheduling_offset", offset);
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}
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long Service::GetSchedulingOffset(void)
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{
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Value value = Get("scheduling_offset");
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if (value.IsEmpty()) {
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value = rand();
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SetSchedulingOffset(value);
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}
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return value;
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}
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void Service::SetFirstCheck(bool first)
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{
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Set("first_check", first ? 1 : 0);
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}
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bool Service::GetFirstCheck(void) const
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{
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Value value = Get("first_check");
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if (value.IsEmpty())
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return true;
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return static_cast<long>(value);
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}
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void Service::SetNextCheck(double nextCheck)
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{
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Set("next_check", nextCheck);
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}
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double Service::GetNextCheck(void)
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{
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Value value = Get("next_check");
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if (value.IsEmpty()) {
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UpdateNextCheck();
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value = Get("next_check");
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if (value.IsEmpty())
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BOOST_THROW_EXCEPTION(runtime_error("Failed to schedule next check."));
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}
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return value;
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}
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void Service::UpdateNextCheck(void)
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{
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double interval;
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if (GetStateType() == StateTypeSoft)
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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 + GetSchedulingOffset(), interval);
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SetNextCheck(now - adj + interval);
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}
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void Service::SetChecker(const String& checker)
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{
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Set("checker", checker);
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}
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String Service::GetChecker(void) const
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{
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return Get("checker");
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}
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void Service::SetCurrentCheckAttempt(long attempt)
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{
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Set("check_attempt", attempt);
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}
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long Service::GetCurrentCheckAttempt(void) const
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{
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Value value = Get("check_attempt");
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if (value.IsEmpty())
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return 1;
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return value;
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}
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void Service::SetState(ServiceState state)
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{
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Set("state", static_cast<long>(state));
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}
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ServiceState Service::GetState(void) const
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{
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Value value = Get("state");
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if (value.IsEmpty())
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return StateUnknown;
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int ivalue = static_cast<int>(value);
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return static_cast<ServiceState>(ivalue);
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}
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void Service::SetStateType(ServiceStateType type)
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{
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Set("state_type", static_cast<long>(type));
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}
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ServiceStateType Service::GetStateType(void) const
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{
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Value value = Get("state_type");
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if (value.IsEmpty())
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return StateTypeSoft;
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int ivalue = static_cast<int>(value);
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return static_cast<ServiceStateType>(ivalue);
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}
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void Service::SetLastCheckResult(const Dictionary::Ptr& result)
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{
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Set("last_result", result);
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}
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Dictionary::Ptr Service::GetLastCheckResult(void) const
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{
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return Get("last_result");
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}
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void Service::SetLastStateChange(double ts)
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{
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Set("last_state_change", static_cast<long>(ts));
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}
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double Service::GetLastStateChange(void) const
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{
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Value value = Get("last_state_change");
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if (value.IsEmpty())
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return IcingaApplication::GetInstance()->GetStartTime();
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return value;
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}
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void Service::SetLastHardStateChange(double ts)
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{
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Set("last_hard_state_change", ts);
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}
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double Service::GetLastHardStateChange(void) const
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{
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Value value = Get("last_hard_state_change");
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if (value.IsEmpty())
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value = IcingaApplication::GetInstance()->GetStartTime();
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return value;
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}
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bool Service::GetEnableActiveChecks(void) const
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{
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Value value = Get("enable_active_checks");
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if (value.IsEmpty())
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return true;
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return static_cast<bool>(value);
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}
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void Service::SetEnableActiveChecks(bool enabled)
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{
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Set("enable_active_checks", enabled ? 1 : 0);
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}
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bool Service::GetEnablePassiveChecks(void) const
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{
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Value value = Get("enable_passive_checks");
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if (value.IsEmpty())
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return true;
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return static_cast<bool>(value);
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}
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void Service::SetEnablePassiveChecks(bool enabled)
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{
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Set("enable_passive_checks", enabled ? 1 : 0);
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}
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bool Service::GetForceNextCheck(void) const
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{
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Value value = Get("force_next_check");
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if (value.IsEmpty())
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return false;
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return static_cast<bool>(value);
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}
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void Service::SetForceNextCheck(bool forced)
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{
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Set("force_next_check", forced ? 1 : 0);
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}
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void Service::ApplyCheckResult(const Dictionary::Ptr& cr)
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{
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ServiceState old_state = GetState();
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ServiceStateType old_stateType = GetStateType();
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bool hardChange = false;
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long attempt = GetCurrentCheckAttempt();
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if (cr->Get("state") == StateOK) {
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if (old_state != StateOK && old_stateType == StateTypeHard)
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hardChange = true; // hard recovery
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if (old_state == StateOK)
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SetStateType(StateTypeHard);
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attempt = 1;
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} else {
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if (attempt >= GetMaxCheckAttempts()) {
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SetStateType(StateTypeHard);
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attempt = 1;
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hardChange = true;
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} else if (GetStateType() == StateTypeSoft || GetState() == StateOK) {
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SetStateType(StateTypeSoft);
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attempt++;
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}
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}
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SetCurrentCheckAttempt(attempt);
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int state = cr->Get("state");
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SetState(static_cast<ServiceState>(state));
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SetLastCheckResult(cr);
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double now = Utility::GetTime();
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if (old_state != GetState()) {
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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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SetAcknowledgement(AcknowledgementNone);
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SetAcknowledgementExpiry(0);
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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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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->GetHostCheckService();
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if (service)
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service->SetNextCheck(Utility::GetTime());
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}
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}
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if (GetState() != StateOK)
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TriggerDowntimes();
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if (hardChange) {
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SetLastHardStateChange(now);
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/* Make sure the notification component sees the updated
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* state/state_type attributes. */
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DynamicObject::FlushTx();
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if (IsReachable() && !IsInDowntime() && !IsAcknowledged())
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RequestNotifications(NotificationStateChange);
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}
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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 if (state == "uncheckable")
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return StateUncheckable;
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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 StateUncheckable:
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return "uncheckable";
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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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ServiceStateType 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(ServiceStateType 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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bool Service::IsAllowedChecker(const String& checker) const
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{
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Dictionary::Ptr checkers = GetCheckers();
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if (!checkers)
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return true;
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Value pattern;
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BOOST_FOREACH(tie(tuples::ignore, pattern), checkers) {
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if (Utility::Match(pattern, checker))
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return true;
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}
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return false;
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}
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void Service::BeginExecuteCheck(const function<void (void)>& callback)
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{
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/* don't run another check if there is one pending */
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if (!Get("current_task").IsEmpty()) {
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/* we need to call the callback anyway */
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callback();
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return;
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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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Dictionary::Ptr scheduleInfo = boost::make_shared<Dictionary>();
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scheduleInfo->Set("schedule_start", GetNextCheck());
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scheduleInfo->Set("execution_start", Utility::GetTime());
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try {
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vector<Value> arguments;
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arguments.push_back(static_cast<Service::Ptr>(GetSelf()));
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ScriptTask::Ptr task;
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task = InvokeMethod("check", arguments, boost::bind(&Service::CheckCompletedHandler, this, scheduleInfo, _1, callback));
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if (!task->IsFinished())
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Set("current_task", task);
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} catch (...) {
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/* something went wrong while setting up the method call -
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* reschedule the service and call the callback anyway. */
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UpdateNextCheck();
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callback();
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throw;
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}
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}
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void Service::CheckCompletedHandler(const Dictionary::Ptr& scheduleInfo,
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const ScriptTask::Ptr& task, const function<void (void)>& callback)
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{
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Set("current_task", Empty);
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scheduleInfo->Set("execution_end", Utility::GetTime());
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scheduleInfo->Set("schedule_end", Utility::GetTime());
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Dictionary::Ptr result;
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try {
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Value vresult = task->GetResult();
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if (vresult.IsObjectType<Dictionary>())
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result = vresult;
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} catch (const exception& ex) {
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stringstream msgbuf;
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msgbuf << "Exception occured during check for service '"
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<< GetName() << "': " << diagnostic_information(ex);
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String message = msgbuf.str();
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Logger::Write(LogWarning, "icinga", message);
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result = boost::make_shared<Dictionary>();
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result->Set("state", StateUnknown);
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result->Set("output", message);
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}
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if (result) {
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if (!result->Contains("schedule_start"))
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result->Set("schedule_start", scheduleInfo->Get("schedule_start"));
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if (!result->Contains("schedule_end"))
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result->Set("schedule_end", scheduleInfo->Get("schedule_end"));
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if (!result->Contains("execution_start"))
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result->Set("execution_start", scheduleInfo->Get("execution_start"));
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if (!result->Contains("execution_end"))
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result->Set("execution_end", scheduleInfo->Get("execution_end"));
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if (!result->Contains("active"))
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result->Set("active", 1);
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if (!result->Contains("checker"))
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result->Set("checker", EndpointManager::GetInstance()->GetIdentity());
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ProcessCheckResult(result);
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}
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/* figure out when the next check is for this service; the call to
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* ApplyCheckResult() should've already done this but lets do it again
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* just in case there was no check result. */
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UpdateNextCheck();
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callback();
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}
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void Service::ProcessCheckResult(const Dictionary::Ptr& cr)
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{
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ApplyCheckResult(cr);
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Service::UpdateStatistics(cr);
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/* flush the current transaction so other instances see the service's
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* new state when they receive the CheckResult message */
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DynamicObject::FlushTx();
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RequestMessage rm;
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rm.SetMethod("checker::CheckResult");
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/* TODO: add _old_ state to message */
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CheckResultMessage params;
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params.SetService(GetName());
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params.SetCheckResult(cr);
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rm.SetParams(params);
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EndpointManager::GetInstance()->SendMulticastMessage(rm);
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}
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void Service::UpdateStatistics(const Dictionary::Ptr& cr)
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{
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time_t ts;
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Value schedule_end = cr->Get("schedule_end");
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if (!schedule_end.IsEmpty())
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ts = static_cast<time_t>(schedule_end);
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else
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ts = static_cast<time_t>(Utility::GetTime());
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Value active = cr->Get("active");
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if (active.IsEmpty() || static_cast<long>(active))
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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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