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-rw-r--r--lib/icinga/hostgroup.cpp108
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;
+}