icinga2/lib/icinga/dependency.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
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#include "icinga/dependency.hpp"
#include "icinga/service.hpp"
#include "config/configcompilercontext.hpp"
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#include "base/logger.hpp"
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#include "base/scriptfunction.hpp"
#include <boost/foreach.hpp>
using namespace icinga;
REGISTER_TYPE(Dependency);
REGISTER_SCRIPTFUNCTION(ValidateDependencyFilters, &Dependency::ValidateFilters);
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String DependencyNameComposer::MakeName(const String& shortName, const Object::Ptr& context) const
{
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Dependency::Ptr dependency = dynamic_pointer_cast<Dependency>(context);
if (!dependency)
return "";
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String name = dependency->GetChildHostName();
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if (!dependency->GetChildServiceName().IsEmpty())
name += "!" + dependency->GetChildServiceName();
name += "!" + shortName;
return name;
}
void Dependency::OnConfigLoaded(void)
{
Value defaultFilter;
if (GetParentServiceName().IsEmpty())
defaultFilter = StateFilterUp;
else
defaultFilter = StateFilterOK | StateFilterWarning;
SetStateFilter(FilterArrayToInt(GetStates(), defaultFilter));
}
void Dependency::OnStateLoaded(void)
{
DynamicObject::Start();
ASSERT(!OwnsLock());
Host::Ptr childHost = Host::GetByName(GetChildHostName());
if (childHost) {
if (GetChildServiceName().IsEmpty()) {
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Log(LogDebug, "Dependency")
<< "Dependency '" << GetName() << "' child host '" << GetChildHostName() << ".";
m_Child = childHost;
} else {
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Log(LogDebug, "Dependency")
<< "Dependency '" << GetName() << "' child host '" << GetChildHostName() << "' service '" << GetChildServiceName() << "' .";
m_Child = childHost->GetServiceByShortName(GetChildServiceName());
}
}
if (!m_Child)
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Log(LogWarning, "Dependency")
<< "Dependency '" << GetName() << "' references an invalid child object and will be ignored.";
else
m_Child->AddDependency(this);
Host::Ptr parentHost = Host::GetByName(GetParentHostName());
if (parentHost) {
if (GetParentServiceName().IsEmpty()) {
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Log(LogDebug, "Dependency")
<< "Dependency '" << GetName() << "' parent host '" << GetParentHostName() << ".";
m_Parent = parentHost;
} else {
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Log(LogDebug, "Dependency")
<< "Dependency '" << GetName() << "' parent host '" << GetParentHostName() << "' service '" << GetParentServiceName() << "' .";
m_Parent = parentHost->GetServiceByShortName(GetParentServiceName());
}
}
if (!m_Parent)
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Log(LogWarning, "Dependency")
<< "Dependency '" << GetName() << "' references an invalid parent object and will always fail.";
else
m_Parent->AddReverseDependency(this);
}
void Dependency::Stop(void)
{
DynamicObject::Stop();
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if (GetChild())
GetChild()->RemoveDependency(this);
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if (GetParent())
GetParent()->RemoveReverseDependency(this);
}
bool Dependency::IsAvailable(DependencyType dt) const
{
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Checkable::Ptr parent = GetParent();
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if (!parent)
return false;
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(parent);
/* ignore if it's the same checkable object */
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if (parent == GetChild()) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: Parent and child " << (service ? "service" : "host") << " are identical.";
return true;
}
/* ignore pending */
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if (!parent->GetLastCheckResult()) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: " << (service ? "Service" : "Host") << " '" << parent->GetName() << "' hasn't been checked yet.";
return true;
}
/* ignore soft states */
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if (parent->GetStateType() == StateTypeSoft) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: " << (service ? "Service" : "Host") << " '" << parent->GetName() << "' is in a soft state.";
return true;
}
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int state;
if (service)
state = ServiceStateToFilter(service->GetState());
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else
state = HostStateToFilter(host->GetState());
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/* check state */
if (state & GetStateFilter()) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: " << (service ? "Service" : "Host") << " '" << parent->GetName() << "' matches state filter.";
return true;
}
/* ignore if not in time period */
TimePeriod::Ptr tp = GetPeriod();
if (tp && !tp->IsInside(Utility::GetTime())) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: Outside time period.";
return true;
}
if (dt == DependencyCheckExecution && !GetDisableChecks()) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: Checks are not disabled.";
return true;
} else if (dt == DependencyNotification && !GetDisableNotifications()) {
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' passed: Notifications are not disabled";
return true;
}
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Log(LogNotice, "Dependency")
<< "Dependency '" << GetName() << "' failed. Parent "
<< (service ? "service" : "host") << " '" << parent->GetName() << "' is "
<< (service ? Service::StateToString(service->GetState()) : Host::StateToString(host->GetState()));
return false;
}
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Checkable::Ptr Dependency::GetChild(void) const
{
return m_Child;
}
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Checkable::Ptr Dependency::GetParent(void) const
{
return m_Parent;
}
TimePeriod::Ptr Dependency::GetPeriod(void) const
{
return TimePeriod::GetByName(GetPeriodRaw());
}
void Dependency::ValidateFilters(const String& location, const Dependency::Ptr& object)
{
int sfilter = FilterArrayToInt(object->GetStates(), 0);
if (object->GetParentServiceName().IsEmpty() && (sfilter & ~(StateFilterUp | StateFilterDown)) != 0) {
ConfigCompilerContext::GetInstance()->AddMessage(true, "Validation failed for " +
location + ": State filter is invalid for host dependency.");
}
if (!object->GetParentServiceName().IsEmpty() && (sfilter & ~(StateFilterOK | StateFilterWarning | StateFilterCritical | StateFilterUnknown)) != 0) {
ConfigCompilerContext::GetInstance()->AddMessage(true, "Validation failed for " +
location + ": State filter is invalid for service dependency.");
}
}