1 files changed, 37 insertions, 0 deletions
diff --git a/lib/livestatus/sumaggregator.cpp b/lib/livestatus/sumaggregator.cpp
new file mode 100644
index 0000000..fc4b62e
--- /dev/null
+++ b/lib/livestatus/sumaggregator.cpp
@@ -0,0 +1,37 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "livestatus/sumaggregator.hpp"
+
+using namespace icinga;
+
+SumAggregator::SumAggregator(String attr)
+	: m_SumAttr(std::move(attr))
+{ }
+
+SumAggregatorState *SumAggregator::EnsureState(AggregatorState **state)
+{
+	if (!*state)
+		*state = new SumAggregatorState();
+
+	return static_cast<SumAggregatorState *>(*state);
+}
+
+void SumAggregator::Apply(const Table::Ptr& table, const Value& row, AggregatorState **state)
+{
+	Column column = table->GetColumn(m_SumAttr);
+
+	Value value = column.ExtractValue(row);
+
+	SumAggregatorState *pstate = EnsureState(state);
+
+	pstate->Sum += value;
+}
+
+double SumAggregator::GetResultAndFreeState(AggregatorState *state) const
+{
+	SumAggregatorState *pstate = EnsureState(&state);
+	double result = pstate->Sum;
+	delete pstate;
+
+	return result;
+}