mirror of https://github.com/Icinga/icinga2.git
441 lines
12 KiB
C++
441 lines
12 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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map<String, map<String, weak_ptr<Service> > > Host::m_ServicesCache;
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bool Host::m_ServicesCacheValid = true;
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REGISTER_SCRIPTFUNCTION("native::ValidateServiceDictionary", &Host::ValidateServiceDictionary);
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static AttributeDescription hostAttributes[] = {
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{ "slave_services", Attribute_Transient }
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};
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REGISTER_TYPE(Host, hostAttributes);
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Host::Host(const Dictionary::Ptr& properties)
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: DynamicObject(properties)
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{ }
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Host::~Host(void)
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{
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HostGroup::InvalidateMembersCache();
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Dictionary::Ptr services = Get("slave_services");
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if (services) {
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ConfigItem::Ptr service;
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BOOST_FOREACH(tie(tuples::ignore, service), services) {
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service->Unregister();
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}
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}
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}
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String Host::GetDisplayName(void) const
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{
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String value = Get("alias");
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if (!value.IsEmpty())
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return value;
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else
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return GetName();
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}
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bool Host::Exists(const String& name)
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{
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return (DynamicObject::GetObject("Host", name));
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}
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Host::Ptr Host::GetByName(const String& name)
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{
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DynamicObject::Ptr configObject = DynamicObject::GetObject("Host", name);
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if (!configObject)
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BOOST_THROW_EXCEPTION(invalid_argument("Host '" + name + "' does not exist."));
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return dynamic_pointer_cast<Host>(configObject);
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}
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Dictionary::Ptr Host::GetGroups(void) const
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{
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return Get("hostgroups");
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}
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Dictionary::Ptr Host::GetMacros(void) const
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{
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return Get("macros");
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}
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Dictionary::Ptr Host::GetHostDependencies(void) const
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{
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return Get("hostdependencies");
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}
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Dictionary::Ptr Host::GetServiceDependencies(void) const
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{
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return Get("servicedependencies");
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}
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String Host::GetHostCheck(void) const
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{
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return Get("hostcheck");
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}
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bool Host::IsReachable(void)
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{
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BOOST_FOREACH(const Service::Ptr& service, GetParentServices()) {
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/* ignore pending services */
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if (!service->GetLastCheckResult())
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continue;
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/* ignore soft states */
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if (service->GetStateType() == StateTypeSoft)
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continue;
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/* ignore services states OK and Warning */
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if (service->GetState() == StateOK ||
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service->GetState() == StateWarning)
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continue;
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return false;
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}
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BOOST_FOREACH(const Host::Ptr& host, GetParentHosts()) {
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/* ignore hosts that are up */
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if (host->IsUp())
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continue;
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return false;
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}
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return true;
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}
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bool Host::IsInDowntime(void) const
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{
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Service::Ptr service = GetHostCheckService();
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return (service || service->IsInDowntime());
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}
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bool Host::IsUp(void) const
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{
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Service::Ptr service = GetHostCheckService();
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return (!service || service->GetState() == StateOK || service->GetState() == StateWarning);
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}
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template<bool copyServiceAttrs, typename TDict>
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static void CopyServiceAttributes(TDict serviceDesc, const ConfigItemBuilder::Ptr& builder)
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{
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/* TODO: we only need to copy macros if this is an inline definition,
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* i.e. "typeid(serviceDesc)" != Service, however for now we just
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* copy them anyway. */
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Value macros = serviceDesc->Get("macros");
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if (!macros.IsEmpty())
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builder->AddExpression("macros", OperatorPlus, macros);
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Value checkInterval = serviceDesc->Get("check_interval");
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if (!checkInterval.IsEmpty())
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builder->AddExpression("check_interval", OperatorSet, checkInterval);
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Value retryInterval = serviceDesc->Get("retry_interval");
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if (!retryInterval.IsEmpty())
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builder->AddExpression("retry_interval", OperatorSet, retryInterval);
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Value sgroups = serviceDesc->Get("servicegroups");
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if (!sgroups.IsEmpty())
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builder->AddExpression("servicegroups", OperatorPlus, sgroups);
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Value checkers = serviceDesc->Get("checkers");
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if (!checkers.IsEmpty())
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builder->AddExpression("checkers", OperatorSet, checkers);
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if (copyServiceAttrs) {
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Value servicedependencies = serviceDesc->Get("servicedependencies");
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if (!servicedependencies.IsEmpty())
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builder->AddExpression("servicedependencies", OperatorPlus, servicedependencies);
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Value hostdependencies = serviceDesc->Get("hostdependencies");
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if (!hostdependencies.IsEmpty())
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builder->AddExpression("hostdependencies", OperatorPlus, hostdependencies);
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}
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}
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void Host::UpdateSlaveServices(void)
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{
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ConfigItem::Ptr item = ConfigItem::GetObject("Host", GetName());
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/* Don't create slave services unless we own this object
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* and it's not a template. */
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if (!item || IsAbstract())
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return;
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Dictionary::Ptr oldServices = Get("slave_services");
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Dictionary::Ptr newServices;
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newServices = boost::make_shared<Dictionary>();
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Dictionary::Ptr serviceDescs = Get("services");
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if (serviceDescs) {
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String svcname;
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Value svcdesc;
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BOOST_FOREACH(tie(svcname, svcdesc), serviceDescs) {
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stringstream namebuf;
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namebuf << GetName() << "-" << svcname;
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String name = namebuf.str();
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ConfigItemBuilder::Ptr builder = boost::make_shared<ConfigItemBuilder>(item->GetDebugInfo());
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builder->SetType("Service");
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builder->SetName(name);
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builder->AddExpression("host_name", OperatorSet, GetName());
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builder->AddExpression("alias", OperatorSet, svcname);
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builder->AddExpression("short_name", OperatorSet, svcname);
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CopyServiceAttributes<false>(this, builder);
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if (svcdesc.IsScalar()) {
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builder->AddParent(svcdesc);
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} else if (svcdesc.IsObjectType<Dictionary>()) {
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Dictionary::Ptr service = svcdesc;
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String parent = service->Get("service");
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if (parent.IsEmpty())
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parent = svcname;
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builder->AddParent(parent);
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CopyServiceAttributes<true>(service, builder);
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} else {
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BOOST_THROW_EXCEPTION(invalid_argument("Service description must be either a string or a dictionary."));
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}
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ConfigItem::Ptr serviceItem = builder->Compile();
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serviceItem->Commit();
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newServices->Set(name, serviceItem);
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}
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}
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if (oldServices) {
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ConfigItem::Ptr service;
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BOOST_FOREACH(tie(tuples::ignore, service), oldServices) {
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if (!service)
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continue;
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if (!newServices->Contains(service->GetName()))
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service->Unregister();
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}
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}
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Set("slave_services", newServices);
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}
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void Host::OnAttributeChanged(const String& name, const Value&)
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{
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if (name == "hostgroups")
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HostGroup::InvalidateMembersCache();
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else if (name == "services")
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UpdateSlaveServices();
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else if (name == "notifications") {
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BOOST_FOREACH(const Service::Ptr& service, GetServices()) {
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service->UpdateSlaveNotifications();
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}
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}
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}
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set<Service::Ptr> Host::GetServices(void) const
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{
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set<Service::Ptr> services;
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ValidateServicesCache();
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String key;
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Service::WeakPtr wservice;
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BOOST_FOREACH(tie(key, wservice), m_ServicesCache[GetName()]) {
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Service::Ptr service = wservice.lock();
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if (!service)
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continue;
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services.insert(service);
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}
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return services;
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}
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void Host::InvalidateServicesCache(void)
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{
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m_ServicesCacheValid = false;
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m_ServicesCache.clear();
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}
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void Host::ValidateServicesCache(void)
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{
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if (m_ServicesCacheValid)
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return;
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m_ServicesCache.clear();
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DynamicObject::Ptr object;
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BOOST_FOREACH(tie(tuples::ignore, object), DynamicType::GetByName("Service")->GetObjects()) {
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const Service::Ptr& service = static_pointer_cast<Service>(object);
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// TODO: assert for duplicate short_names
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m_ServicesCache[service->GetHost()->GetName()][service->GetShortName()] = service;
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}
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m_ServicesCacheValid = true;
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}
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void Host::ValidateServiceDictionary(const ScriptTask::Ptr& task, const vector<Value>& arguments)
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{
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if (arguments.size() < 1)
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BOOST_THROW_EXCEPTION(invalid_argument("Missing argument: Location must be specified."));
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if (arguments.size() < 2)
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BOOST_THROW_EXCEPTION(invalid_argument("Missing argument: Attribute dictionary must be specified."));
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String location = arguments[0];
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Dictionary::Ptr attrs = arguments[1];
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String key;
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Value value;
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BOOST_FOREACH(tie(key, value), attrs) {
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String name;
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if (value.IsScalar()) {
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name = value;
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} else if (value.IsObjectType<Dictionary>()) {
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Dictionary::Ptr serviceDesc = value;
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if (serviceDesc->Contains("service"))
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name = serviceDesc->Get("service");
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else
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name = key;
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} else {
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continue;
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}
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if (!ConfigItem::GetObject("Service", name)) {
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ConfigCompilerContext::GetContext()->AddError(false, "Validation failed for " +
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location + ": Service '" + name + "' not found.");
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}
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}
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task->FinishResult(Empty);
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}
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Service::Ptr Host::GetServiceByShortName(const Value& name) const
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{
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if (name.IsScalar()) {
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ValidateServicesCache();
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map<String, weak_ptr<Service> >& services = m_ServicesCache[GetName()];
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map<String, weak_ptr<Service> >::iterator it = services.find(name);
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if (it != services.end()) {
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Service::Ptr service = it->second.lock();
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assert(service);
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return service;
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}
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return Service::GetByName(name);
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} else if (name.IsObjectType<Dictionary>()) {
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Dictionary::Ptr dict = name;
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return GetByName(dict->Get("host"))->GetServiceByShortName(dict->Get("service"));
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} else {
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BOOST_THROW_EXCEPTION(invalid_argument("Host/Service name pair is invalid."));
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}
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}
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set<Host::Ptr> Host::GetParentHosts(void) const
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{
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set<Host::Ptr> parents;
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Dictionary::Ptr dependencies = GetHostDependencies();
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if (dependencies) {
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String key;
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BOOST_FOREACH(tie(key, tuples::ignore), dependencies) {
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if (key == GetName())
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continue;
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parents.insert(Host::GetByName(key));
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}
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}
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return parents;
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}
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Service::Ptr Host::GetHostCheckService(void) const
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{
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String hostcheck = GetHostCheck();
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if (hostcheck.IsEmpty())
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return Service::Ptr();
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Service::Ptr service = GetServiceByShortName(hostcheck);
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if (service->GetHost()->GetName() != GetName())
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BOOST_THROW_EXCEPTION(runtime_error("Hostcheck service refers to another host's service."));
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return service;
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}
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set<Service::Ptr> Host::GetParentServices(void) const
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{
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set<Service::Ptr> parents;
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Dictionary::Ptr dependencies = GetServiceDependencies();
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if (dependencies) {
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String key;
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Value value;
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BOOST_FOREACH(tie(key, value), dependencies) {
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parents.insert(GetServiceByShortName(value));
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}
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}
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return parents;
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}
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Dictionary::Ptr Host::CalculateDynamicMacros(void) const
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{
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Dictionary::Ptr macros = boost::make_shared<Dictionary>();
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macros->Set("HOSTNAME", GetName());
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macros->Set("HOSTALIAS", GetName());
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macros->Set("HOSTDISPLAYNAME", GetDisplayName());
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macros->Set("HOSTSTATE", "DERP");
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Service::Ptr hostcheck = GetHostCheckService();
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if (hostcheck) {
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macros->Set("HOSTSTATEID", 99);
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macros->Set("HOSTSTATETYPE", Service::StateTypeToString(hostcheck->GetStateType()));
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macros->Set("HOSTATTEMPT", hostcheck->GetCurrentCheckAttempt());
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macros->Set("MAXHOSTATTEMPT", hostcheck->GetMaxCheckAttempts());
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}
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return macros;
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}
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