mirror of https://github.com/Icinga/icinga2.git
307 lines
9.1 KiB
C++
307 lines
9.1 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 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 "checker/checkercomponent.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/utility.h"
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#include "base/logger_fwd.h"
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#include "base/exception.h"
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#include "base/convert.h"
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#include "base/statsfunction.h"
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#include <boost/foreach.hpp>
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using namespace icinga;
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REGISTER_TYPE(CheckerComponent);
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REGISTER_STATSFUNCTION(CheckerComponentStats, &CheckerComponent::StatsFunc);
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Value CheckerComponent::StatsFunc(Dictionary::Ptr& status, Dictionary::Ptr& perfdata)
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{
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Dictionary::Ptr nodes = make_shared<Dictionary>();
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BOOST_FOREACH(const CheckerComponent::Ptr& checker, DynamicType::GetObjects<CheckerComponent>()) {
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unsigned long idle = checker->GetIdleCheckables();
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unsigned long pending = checker->GetPendingCheckables();
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Dictionary::Ptr stats = make_shared<Dictionary>();
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stats->Set("idle", idle);
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stats->Set("pending", pending);
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nodes->Set(checker->GetName(), stats);
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String perfdata_prefix = "checkercomponent_" + checker->GetName() + "_";
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perfdata->Set(perfdata_prefix + "idle", Convert::ToDouble(idle));
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perfdata->Set(perfdata_prefix + "pending", Convert::ToDouble(pending));
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}
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status->Set("checkercomponent", nodes);
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return 0;
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}
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void CheckerComponent::OnConfigLoaded(void)
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{
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DynamicObject::OnStarted.connect(bind(&CheckerComponent::ObjectHandler, this, _1));
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DynamicObject::OnStopped.connect(bind(&CheckerComponent::ObjectHandler, this, _1));
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DynamicObject::OnAuthorityChanged.connect(bind(&CheckerComponent::ObjectHandler, this, _1));
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Checkable::OnNextCheckChanged.connect(bind(&CheckerComponent::NextCheckChangedHandler, this, _1));
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}
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void CheckerComponent::Start(void)
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{
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DynamicObject::Start();
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m_Stopped = false;
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m_Thread = boost::thread(boost::bind(&CheckerComponent::CheckThreadProc, this));
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m_ResultTimer = make_shared<Timer>();
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m_ResultTimer->SetInterval(5);
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m_ResultTimer->OnTimerExpired.connect(boost::bind(&CheckerComponent::ResultTimerHandler, this));
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m_ResultTimer->Start();
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}
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void CheckerComponent::Stop(void)
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{
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Log(LogInformation, "checker", "Checker stopped.");
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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m_Stopped = true;
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m_CV.notify_all();
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}
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m_ResultTimer->Stop();
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m_Thread.join();
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DynamicObject::Stop();
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}
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void CheckerComponent::CheckThreadProc(void)
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{
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Utility::SetThreadName("Check Scheduler");
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boost::mutex::scoped_lock lock(m_Mutex);
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for (;;) {
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typedef boost::multi_index::nth_index<CheckableSet, 1>::type CheckTimeView;
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CheckTimeView& idx = boost::get<1>(m_IdleCheckables);
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while (idx.begin() == idx.end() && !m_Stopped)
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m_CV.wait(lock);
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if (m_Stopped)
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break;
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CheckTimeView::iterator it = idx.begin();
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Checkable::Ptr checkable = *it;
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if (!checkable->HasAuthority("checker")) {
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m_IdleCheckables.erase(checkable);
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continue;
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}
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double wait = checkable->GetNextCheck() - Utility::GetTime();
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if (wait > 0) {
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/* Wait for the next check. */
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m_CV.timed_wait(lock, boost::posix_time::milliseconds(wait * 1000));
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continue;
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}
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m_IdleCheckables.erase(checkable);
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bool forced = checkable->GetForceNextCheck();
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bool check = true;
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if (!forced) {
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if (!checkable->IsReachable(DependencyCheckExecution)) {
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Log(LogDebug, "icinga", "Skipping check for object '" + checkable->GetName() + "': Dependency failed.");
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check = false;
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}
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Host::Ptr host;
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Service::Ptr service;
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tie(host, service) = GetHostService(checkable);
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if (!checkable->GetEnableActiveChecks() || (host && !service && !IcingaApplication::GetInstance()->GetEnableHostChecks())) {
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Log(LogDebug, "checker", "Skipping check for host '" + host->GetName() + "': active host checks are disabled");
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check = false;
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}
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if (!checkable->GetEnableActiveChecks() || (host && service && !IcingaApplication::GetInstance()->GetEnableServiceChecks())) {
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Log(LogDebug, "checker", "Skipping check for service '" + service->GetName() + "': active service checks are disabled");
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check = false;
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}
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TimePeriod::Ptr tp = checkable->GetCheckPeriod();
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if (tp && !tp->IsInside(Utility::GetTime())) {
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Log(LogDebug, "checker", "Skipping check for object '" + checkable->GetName() + "': not in check_period");
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check = false;
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}
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}
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/* reschedule the checkable if checks are disabled */
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if (!check) {
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m_IdleCheckables.insert(checkable);
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lock.unlock();
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checkable->UpdateNextCheck();
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lock.lock();
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continue;
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}
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m_PendingCheckables.insert(checkable);
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lock.unlock();
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if (forced) {
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ObjectLock olock(checkable);
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checkable->SetForceNextCheck(false);
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}
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Log(LogDebug, "checker", "Executing check for '" + checkable->GetName() + "'");
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CheckerComponent::Ptr self = GetSelf();
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Utility::QueueAsyncCallback(boost::bind(&CheckerComponent::ExecuteCheckHelper, self, checkable));
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lock.lock();
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}
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}
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void CheckerComponent::ExecuteCheckHelper(const Checkable::Ptr& checkable)
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{
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try {
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checkable->ExecuteCheck();
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} catch (const std::exception& ex) {
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CheckResult::Ptr cr = make_shared<CheckResult>();
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cr->SetState(ServiceUnknown);
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String output = "Exception occured while checking '" + checkable->GetName() + "': " + DiagnosticInformation(ex);
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cr->SetOutput(output);
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double now = Utility::GetTime();
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cr->SetScheduleStart(now);
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cr->SetScheduleEnd(now);
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cr->SetExecutionStart(now);
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cr->SetExecutionEnd(now);
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checkable->ProcessCheckResult(cr);
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Log(LogCritical, "checker", output);
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}
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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/* remove the object from the list of pending objects; if it's not in the
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* list this was a manual (i.e. forced) check and we must not re-add the
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* object to the list because it's already there. */
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CheckerComponent::CheckableSet::iterator it;
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it = m_PendingCheckables.find(checkable);
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if (it != m_PendingCheckables.end()) {
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m_PendingCheckables.erase(it);
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if (checkable->IsActive() && checkable->HasAuthority("checker"))
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m_IdleCheckables.insert(checkable);
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m_CV.notify_all();
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}
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}
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Log(LogDebug, "checker", "Check finished for object '" + checkable->GetName() + "'");
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}
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void CheckerComponent::ResultTimerHandler(void)
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{
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std::ostringstream msgbuf;
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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msgbuf << "Pending checkables: " << m_PendingCheckables.size() << "; Idle checkables: " << m_IdleCheckables.size() << "; Checks/s: " << CIB::GetActiveChecksStatistics(5) / 5.0;
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}
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Log(LogDebug, "checker", msgbuf.str());
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}
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void CheckerComponent::ObjectHandler(const DynamicObject::Ptr& object)
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{
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if (!Type::GetByName("Checkable")->IsAssignableFrom(object->GetReflectionType()))
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return;
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Checkable::Ptr checkable = static_pointer_cast<Checkable>(object);
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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if (object->IsActive() && object->HasAuthority("checker")) {
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if (m_PendingCheckables.find(checkable) != m_PendingCheckables.end())
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return;
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m_IdleCheckables.insert(checkable);
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} else {
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m_IdleCheckables.erase(checkable);
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m_PendingCheckables.erase(checkable);
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}
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m_CV.notify_all();
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}
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}
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void CheckerComponent::NextCheckChangedHandler(const Checkable::Ptr& checkable)
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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/* remove and re-insert the object from the set in order to force an index update */
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typedef boost::multi_index::nth_index<CheckableSet, 0>::type CheckableView;
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CheckableView& idx = boost::get<0>(m_IdleCheckables);
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CheckableView::iterator it = idx.find(checkable);
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if (it == idx.end())
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return;
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idx.erase(checkable);
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idx.insert(checkable);
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m_CV.notify_all();
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}
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unsigned long CheckerComponent::GetIdleCheckables(void)
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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return m_IdleCheckables.size();
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}
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unsigned long CheckerComponent::GetPendingCheckables(void)
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{
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boost::mutex::scoped_lock lock(m_Mutex);
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return m_PendingCheckables.size();
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}
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