1 files changed, 108 insertions, 0 deletions
diff --git a/lib/icinga/hostgroup.cpp b/lib/icinga/hostgroup.cpp
new file mode 100644
index 0000000..a99d8ee
--- /dev/null
+++ b/lib/icinga/hostgroup.cpp
@@ -0,0 +1,108 @@
+/* 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;
+}