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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "icinga/hostgroup.hpp"
#include "icinga/hostgroup-ti.cpp"
#include "config/objectrule.hpp"
#include "config/configitem.hpp"
#include "base/configtype.hpp"
#include "base/logger.hpp"
#include "base/objectlock.hpp"
#include "base/context.hpp"
#include "base/workqueue.hpp"
using namespace icinga;
REGISTER_TYPE(HostGroup);
INITIALIZE_ONCE([]() {
ObjectRule::RegisterType("HostGroup");
});
bool HostGroup::EvaluateObjectRule(const Host::Ptr& host, const ConfigItem::Ptr& group)
{
String groupName = group->GetName();
CONTEXT("Evaluating rule for group '" << groupName << "'");
ScriptFrame frame(true);
if (group->GetScope())
group->GetScope()->CopyTo(frame.Locals);
frame.Locals->Set("host", host);
if (!group->GetFilter()->Evaluate(frame).GetValue().ToBool())
return false;
Log(LogDebug, "HostGroup")
<< "Assigning membership for group '" << groupName << "' to host '" << host->GetName() << "'";
Array::Ptr groups = host->GetGroups();
if (groups && !groups->Contains(groupName))
groups->Add(groupName);
return true;
}
void HostGroup::EvaluateObjectRules(const Host::Ptr& host)
{
CONTEXT("Evaluating group memberships for host '" << host->GetName() << "'");
for (const ConfigItem::Ptr& group : ConfigItem::GetItems(HostGroup::TypeInstance))
{
if (!group->GetFilter())
continue;
EvaluateObjectRule(host, group);
}
}
std::set<Host::Ptr> HostGroup::GetMembers() const
{
std::unique_lock<std::mutex> lock(m_HostGroupMutex);
return m_Members;
}
void HostGroup::AddMember(const Host::Ptr& host)
{
host->AddGroup(GetName());
std::unique_lock<std::mutex> lock(m_HostGroupMutex);
m_Members.insert(host);
}
void HostGroup::RemoveMember(const Host::Ptr& host)
{
std::unique_lock<std::mutex> lock(m_HostGroupMutex);
m_Members.erase(host);
}
bool HostGroup::ResolveGroupMembership(const Host::Ptr& host, bool add, int rstack) {
if (add && rstack > 20) {
Log(LogWarning, "HostGroup")
<< "Too many nested groups for group '" << GetName() << "': Host '"
<< host->GetName() << "' membership assignment failed.";
return false;
}
Array::Ptr groups = GetGroups();
if (groups && groups->GetLength() > 0) {
ObjectLock olock(groups);
for (const String& name : groups) {
HostGroup::Ptr group = HostGroup::GetByName(name);
if (group && !group->ResolveGroupMembership(host, add, rstack + 1))
return false;
}
}
if (add)
AddMember(host);
else
RemoveMember(host);
return true;
}
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