1 files changed, 37 insertions, 0 deletions
diff --git a/lib/livestatus/invsumaggregator.cpp b/lib/livestatus/invsumaggregator.cpp
new file mode 100644
index 0000000..c955667
--- /dev/null
+++ b/lib/livestatus/invsumaggregator.cpp
@@ -0,0 +1,37 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "livestatus/invsumaggregator.hpp"
+
+using namespace icinga;
+
+InvSumAggregator::InvSumAggregator(String attr)
+	: m_InvSumAttr(std::move(attr))
+{ }
+
+InvSumAggregatorState *InvSumAggregator::EnsureState(AggregatorState **state)
+{
+	if (!*state)
+		*state = new InvSumAggregatorState();
+
+	return static_cast<InvSumAggregatorState *>(*state);
+}
+
+void InvSumAggregator::Apply(const Table::Ptr& table, const Value& row, AggregatorState **state)
+{
+	Column column = table->GetColumn(m_InvSumAttr);
+
+	Value value = column.ExtractValue(row);
+
+	InvSumAggregatorState *pstate = EnsureState(state);
+
+	pstate->InvSum += (1.0 / value);
+}
+
+double InvSumAggregator::GetResultAndFreeState(AggregatorState *state) const
+{
+	InvSumAggregatorState *pstate = EnsureState(&state);
+	double result = pstate->InvSum;
+	delete pstate;
+
+	return result;
+}